ICEIC 2012

2012 International Conference on Electronics, Information and Communication

Program & Abstracts

February 1 – 3, 2012 The High 1 Resort, Jeongseon, Korea

2

Table of Contents

□ Welcome to ICEIC 2012 …………………………...………….…... 3

□ Organizing Committee…………………………………………..… 4

□ Technical Program Committee ………………….……….……..… 5

□ Advisory Committee ………………….……….………………...… 6

□ Timetable …………...…..………………………………...………... 7

□ Floor Map ……………….………………………………................. 9

□ General Information ………………………………………...…….. 10

□ Social Program …………………………………………........…….. 11

□ Networking Lunch for Woman Engineers ….....……………….... 11

□ Plenary ……….….....……..…………………………...……............ 12

□ Tutorial …….….....……..…………………………...……............... 14

□ Invited Paper …….….....……..…………………………...……….. 16

□ Technical Program

Thursday, February 2, 2012 ………….……………………...…... 17

Friday, February 3, 2012 ...…...….................................................. 43

3

Welcome to ICEIC 2012

The 11th International Conference on Electronics, Information, and Communications (ICEIC 2012) will be held at Jeongseon. Korea from February 1 to February 3, 2012. On behalf of the organizing committee, we give our hearty welcome to all participants of ICEIC 2012.

Recently, electronics, information, and communication technologies are under rapid development, especially in the Asia-Pacific region. In ICEIC 2012 conference, we are going to provide an opportunity to exchange new ideas, advances, and technologies, for engineers, scholars, and students. This year, the main focus of the conference is on "IT(information technology) convergence". In this conference, about 300 papers from 15 countries will be presented in 27 oral and 5 poster sessions. After the conference, there will be a tour of the Samsung Digital City for the participants from abroad. We hope that this conference will become a technological hub for worldwide engineers of electronics, information, and communication fields.

We would like to thank the organizing committee members for their tremendous efforts in arranging and preparing this conference. We would also like to recognize the outstanding work of the technical committee members in paper review and selection. Our special appreciation is also given to all the authors who made their valuable contributions.

Finally, we expect this conference to be valuable and profitable for all participants. Please enjoy a pleasant stay in Jeongseon with various social programs. We hope that this conference will be a memorable experience for all participants. Thank you very much.

Sincerely, Kukjin Chun Stephen Dukes General Co-Chair General Co-Chair President, IEEK President, IEEE Consumer Electronics Society Korea USA

4

Organizing Committee

General Chair Kukjin Chun (President of IEEK, Seoul National University, Korea) General Co-Chair Stephen Dukes (President of IEEE CE Society, Imaginary Universes, LLC, USA) Organizing Committee Chair Byung-Gook Park (Seoul National University, Korea) Secretaries Hyuk-Jae Lee (Seoul National University, Korea) Jungho Ahn (Seoul National University, Korea) Finance Chairs Cheon Won Choi (Dankook University, Korea) Seokhyun Yoon (Dankook University, Korea) Publicity Chairs Yong Seo Koo (Dankook University, Korea) Yoan Shin (Soongsil University, Korea) Publication Chairs Hyesook Lim (Ewha Womans University, Korea) So-Young Kim (Sungkyunkwan University, Korea) Phil Ngai (Cisco Systems, USA) Registration Chair Seungjun Lee (Ewha Womans University, Korea) Local Arrangement Chairs Hae Jin Lim (Kangwon National University, Korea) Chi-Ho Lin (Semyung University, Korea)

5

Technical Program Committee

Chair Chungyong Lee (Yonsei University, Korea) Co-Chair Thomas Eriksson (Chalmers University of Technology, Sweden) Members Supavadee Aramvith (Chulalongkorn University, Thailand) Il Hwan Cho (Myongji University, Korea) Hyunyong Choi (Yonsei University, Korea) Kyu-won Choi (Illinois Institute of Technology, USA) Woo Young Choi (Sogang University, Korea) Dominique Collard (The University of Tokyo, Japan) Jing Dong (Chinese Academy of Sciences, China) Kyeon Hur (Yonsei University, Korea) Sungwoo Hwang (Korea University, Korea) Taewon Hwang (Yonsei University, Korea) Hong Jiang (Alcatel-Lucent, USA) Beomjoon Kim (The University of Tokyo, Japan) Hong Kook Kim (Gwangju Institute of Science and Technology, Korea) Joohee Kim (Illinois Institute of Technology, USA) Cheol Jin Lee (Korea University, Korea) Sangyoun Lee (Yonsei University, Korea) Seongjoo Lee (Sejong University, Korea) Sungjoon Lim (Chung-Ang University, Korea) Byung-Wook Min (Yonsei University, Korea) Jae-Sung Rieh (Korea University, Korea) Hyun-Chool Shin (Soongsil University, Korea) Jhing-fa Wang (NCKU, Taiwan) J. Andrew Yeh (National Tsing Hua University, Taiwan) Sungroh Yoon (Korea University, Korea)

6

Advisory Committee

Do Hyun Kim (Kookmin University, Korea) Hang Gu Bahk (Soam Systel Co., Korea) Hong Tae Jeon (Chung-Ang University) Seong Dae Kim (KAIST, Korea) Jae Hong Lee (Seoul National University, Korea) Jaihie Kim (Yonsei University, Korea) Jin koo Rhee (Dongguk University, Korea) Jong Wha Chong (Hanyang University, Korea) Jung Woong Ra (KAIST, Korea) Koeng Mo Sung (Seoul National University, Korea) Moon Key Lee (Yonsei University, Korea) Sang Seol Lee (Hanyang University, Korea) Seung Hong Hong (Inha University, Korea) Soo Joong Kim (Kyungpook National University, Korea) Sung Han Park (Hanyang University, Korea) Tae Won Rhee (Korea University, Korea) Zeungnam Bien (UNIST, Korea)

Wednesday, February 1, 2012 12:00-18:00 Registration (Lobby, 5F)

13:00-15:00 Tutorial 1 (Hambaek 1) Won Woo Ro (Assistant Professor, Yonsei University, Korea)

15:00-15:10 Break

15:10-17:40 Tutorial 2 (Hambaek 1) Michael Alan Soderstrand (Adjunct Professor, Yonsei University, Korea)

17:40- Welcome Reception (Forest 1+2)

Thursday, February 2, 2012 08:50-18:00 Registration (Lobby, 5F)

Room Hambaek 1 Hambaek 2 Hambaek 3 Taebaek 1 Taebaek 2 Taebaek 3 Lobby

09:15-10:30

TA1 Semiconductor

Devices

TB1 IT Business & E-

Commerce

TC1 Computer Systems

and Application

TD1 IT-Convergence

TE1 Computer Systems and Applications

TF1 Signal Processing

Poster 1 Semiconductor Devices /

IT-Convergence / Modeling and Simulations

10:40-11:55

TA2 Power Electronics

and Circuits

TB2 Control and Robot

Systems

TC2 Signal Processing

TD2 Digital Image

Processing and Graphics

TE2 Computer Systems and Applications

TF2 Communication

Systems and Networks

Poster 2 Communication Systems and

Networks / Control and Robot Systems

11:55-13:00 Lunch (Forest 1+2)

13:00-13:15 Opening Ceremony (Forest 3)

13:15-14:15 Plenary 1 (Forest 3) Stephen D. Dukes (President of IEEE CE Society, Imaginary Universes, LLC, USA)

14:15-15:15 Plenary 2 (Forest 3) Kiho Kim (Executive Vice President, Samsung Electronics Co. Ltd., Korea)

15:15-15:35 Coffee Break (Lobby, F5)

15:35-17:05

TA3 Nanomaterials for

IT

TB3 IT Business & E-

Commerce

TC3 Analog and Digital Circuits Systems

TD3 Digital Image

Processing and Graphics

TE3 Modeling and Simulations

TF3 Communication

Systems and Networks

Poster 3 Analog and Digital Circuits

Systems / Computer Systems and Application /

Circuit and Systems 18:00- Banquet (Forest 1+2)

8

Friday, February 3, 2012 08:50-12:00 Registration (Lobby, 5F)

Room Hambaek 1 Hambaek 2 Hambaek 3 Taebaek 1 Taebaek 2 Taebaek 3 Lobby

09:15-10:30

FA1 Semiconductor

Devices

FB1 Vehicular

Electronics

FC1 VLSI Design and

Applications

FD1 Software and

Artificial Intelligence

FE1 Bio-Electronics

FF1 RF Circuit and

Systems

Poster 4 Software and Artificial

Intelligence / Vehicular Electronics /

VLSI Design and Applications / Bio-Electronics

10:40-11:55

FA2 Communication

Systems and Networks

FB2 IT-Convergence

FC2 CAD and Modeling

Poster 5 Security /

Signal Processing

12:00- Networking Lunch (The Grill) * Only female participants can attend!

9

Floor Map

Floor Room Name Usage Forest 1+2 Banquet / Welcome Reception / Lunch

Forest 3 Opening / Plenary 4F The Grill Networking lunch Taebaek 1 Taebaek 2 Taebaek 3

Hambaek 1 Hambaek 2 Hambaek 3

Oral Sessions

VIP Room VIP Room Secretariat Secretariat

5F

Lobby Poster Sessions / Coffee Breaks

10

General Information Official Language The official language of the conference is English. Registration Desk The registration desk on the lobby (5F) in the venue will be open as follow: Wednesday, February 1, 2012 12:00-18:00 Thursday, February 2, 2012 08:50-18:00 Friday, February 3, 2012 08:50-12:00 Oral Presentation Please meet the session chair in your session at least 10 minutes before the session starts. You should identify yourself to the session chair for your session and check in with AV staff to go over your equipment needs and needs to bring the power point file on a CD (no ZIP disk), or USB memory, and load it on the computer in your session room. You also need to confirm that it is working properly. This is very important to pay attention to this time frame. The visual equipment provided is only LCD projector. Time assignment including discussion is as follow: Plenary: 90 minuets Invited: 30 minuets Regular: 15 minuets Poster Presentation The dimensions of the poster board are 90cm (width) X 180cm (length). You need to attach your poster on the poster board in your session room at least 10 minutes before the session starts, and then remove your poster from the poster board after the session finishes. Wireless Internet Access Wireless internet access will be available for all participants during Conference dates, and this access is free of charge. Those wishing to use this wireless network are required to use their own laptops equipped with wireless LAN card.

11

Social Program Welcome Reception Time: 17:40- Date: Wednesday, February 1, 2012 Place: Forest 1+2 (4F), Convention Hotel The welcome reception will be held at the Forest 1+2 (4F) in the Convention Hotel. An invitation to the welcome reception is extended to all participants including registered students. Banquet Time: 18:00 ~ Date: Thursday, February 2, 2012 Place: Forest 1+2 (4F), Convention Hotel We hope this banquet will offer you a good opportunity to promote friendship with participants. Delicious food and fusion music performance will be offered at the banquet. A banquet ticket is included in the Regular Registration. Student Registration does not include the banquet. Lunch Time: 11:55-13:00 Date: Thursday, February 2, 2012 Place: Forest 1+2 (4F), Convention Hotel Lunch will be provided to all participants including students at only February 2, 2012.

Networking Lunch for Woman Engineers

"Perspectives on Priorities in My Life: Work, Family and Myself" Free lunch for woman engineers. Female engineers including graduate students are all welcomed. Introduce yourself, meet others, and find out your opportunities in career paths. Time: 12:00-14:00 Date: Friday, February 3, 2012, Place: The Grill (4F), Convention Hotel Sponsored by Telechips Inc.

12

Plenary 1 13:15-14:15, Thursday, February 2, 2012 Room: Forest 3 The IEEE and a relationship with the ICEIC Stephen D. Dukes (President of IEEE CE Society, Imaginary Universes, LLC, USA) Biography

Responsibilities: Mr. Dukes is President & CEO of IU, LLC., responsible for management and direction of advanced technologies and strategic management group that advises companies in development and investment of existing and new technologies. The focus includes high speed data systems, integrated voice, data and video systems, interactive television and video on demand systems, DSP software libraries, real time operating systems, middleware, applications interfaces, renewable security systems, network standards, network architecture and topologies, semiconductor technologies for telecommunications networks and rapidly developing new applications and services. Mr. Dukes serves or has served on several public and private corporate boards and a number of technical advisory boards.

Previous Work Experience: He was Vice President, Digital Broadband Technology at MediaOne responsible for broadband development and member of CableLabs’ DOCSIS Certification Board. He was Vice President, Technology with TCI, including network architecture, digital settop and conditional access system requirements and developments. He was CEO of MCNS Holdings, responsible for management of the DOCSIS specifications for data over cable networks and cable modem development with over 130M cable modems deployed to the standard. Mr. Dukes was Director, Advanced Network Technologies for 3DO responsible for network interface requirements to 3DO game platforms. He was Vice President, Advanced Network Development at CableLabs responsible for network architecture with $85B in cable infrastructure deployed, multimedia, wired telephony and wireless PCS. He was Telecom Analyst at Boeing Computer Services responsible for technical planning. Mr. Dukes held management and technical positions with GTE network engineering and planning. Memberships/offices held: IEEE Fellow (2002); IEEE member since 1976; 2010-12 IEEE Fellow Committee, 2011 TAB Awards and Recognition Committee, 2010-11 IEEE Smart Grid Steering Committee, 2005, 2008-11 IEEE Broadcast Technology Society Administrative Committee, IEEE Broadcast Technology Society Associate Editor, IEEE Technical Field Award Council, 2009 Past Chair of IEEE Masaru Ibuka Award Committee, 2007-08 Chair of IEEE Masaru Ibuka Award Committee, 2005-06 Member of IEEE Masaru Ibuka Award Committee, 2010-12 President of IEEE Consumer Electronics Society, 2005-10 IEEE Consumer Electronics Society Administrative Committee and 2009 1st Vice President, IEEE Consumer Electronics Fellow Committee, Industry Liaison Chair of IEEE Consumer Electronics Society's Games Innovations Conference 2009, IEEE Computer Society Technical Committee on Computer Communications (TCCC), IEEE 802.14 Cable TV Protocol Study Group, IEEE Communications Society/Society of Cable Telecommunications Engineers Technical Committee on Broadband Distribution and Access Education: B.S. Mathematics, University of Washington Publications/Patents/Other: Co-author of "Breaking the Access Barrier: Delivering Internet Connections over Cable,” John Wiley & Son, along with 19 other publications

13

Plenary 2 14:15-15:15, Thursday, February 2, 2012 Room: Forest 3 Future ICT: Megatrends and Enabling Technology Kiho Kim (Executive Vice President, Samsung Electronics Co. Ltd., Korea) Biography

• Executive Vice President, Samsung Electronics Co. Ltd., Korea

• Head of Digital Media & Communication (DMC) R&D Center - DMC R&D Center is a central research of device business in Samsung

Electronics; has more than 5,000 researchers in Korea and 9 overseas branches

• IEEE Fellow

- For contributions to high-speed next-generation orthogonal frequency division multiplexed multiple-antenna wireless networks

• Professional 1982~1987: Korean Broadcasting System (KBS)

The Korean Teletext (Data Broadcasting) System 1991~Present: Samsung Electronics Co. Ltd.

SAIT: HD TV transmission (OFDM), ADSL modem (DMT) and WLAN modem DMC R&D Center: 4G (LTD and mobile WiMAX) OFDM and MIMO technologies

• Educational Qualification 1987~1991: The University of Texas at Austin (Ph.D in Electrical & Computer Engineering)

1980~1982: Korea Advanced institute of Science and Technology (MS in Electrical Engineering) 1976~1980: Hanyang University (BS in Electrical Engineering)

14

Tutorial 1 13:00-15:00, Wednesday, February 1, 2012 Room: Hambaek 1 Multi-Core Processor Architectures and Applications Won Woo Ro (Assistant Professor of Electrical and Electronic Engineering, Yonsei University, Korea) This tutorial covers technical trends in developing multi-core processors and discusses issues in exploiting parallelism with the multi-core processors. The tutorial consists of two 50-minute lectures. The first lecture covers current research trends in the area of multi-core processors including many-core graphics processors and heterogeneous multi-core processors. The second part of tutorial covers methods and algorithms in parallelizing applications using those multi-core processors. The multi-core processors are prevalent; they are found in a wide spectrum of computer systems, from high performance servers to special purpose embedded systems. The industrial trends have been shifted to embedding more and more cores in a processor and consequently, new processor architectures such as many-core graphics processors and heterogeneous multi-core processors have emerged. In fact, today’s popular electronic devices including smart phones, tablet PCs, netbooks, laptops, and smart TVs embedded those new processors. In the first half, major research trends in multi-core hardware implementation including transactional memory and graphics processing units (GPU) is discussed. In the second half of the tutorial, new parallel processing techniques that can enhance performance of several applications by fully exploiting parallelism on the multi-core systems are presented. Those applications include parallel network coding, multiple pattern matching, and webpage rendering operations. Biography

Dr. Won Woo Ro has contributed to the emergence and advance of the modern microprocessor design. The concept of implementing multiple cores on a single processor has become very popular since 2005 and many major processor vendors have developed dual-core or quad-core processors. His research work and outputs have strongly influenced the development of those multi-core processors. He received his B.S. degree in Electrical Engineering from Yonsei University, Seoul, Korea, in 1996. He received his M.S. and Ph.D. degrees in Electrical Engineering from the University of Southern California in 1999 and 2004, respectively. He worked as a research scientist in the Electrical Engineering and Computer Science Department at the University of California, Irvine. He currently works as an Assistant Professor in the School of Electrical and Electronic Engineering at Yonsei

University. Prior to joining Yonsei University, he worked as an Assistant Professor in the Department of Electrical and Computer Engineering at the California State University, Northridge. His industry experience also includes a college internship at Apple Computer Inc. and a contract software engineer with ARM Inc. His current research interests are high-performance microprocessor design, compiler optimization, and embedded system designs. He is a member of ACM and IEEE

15

Tutorial 2 15:10-17:40, Wednesday, February 1, 2012 Room: Hambaek 1 Digital Signal Processing for Communications Michael Alan Soderstrand (Adjunct Professor of Electrical and Electronic Engineering, Yonsei University, Korea) This tutorial covers digital signal processing techniques for wireless communications. It consists of two 50-minute lectures. Lecture 1 covers basic DSP fundamentals, such as DFT, FFT, IIR and FIR filters and DSP algorithms. Lecture 2 covers DSP applications in wireless communications. Various physical layer issues in wireless communications are addressed, including channel estimation, adaptive equalization, interference cancellation, pipelining for high-speed applications and adaptive heterodyne filters. Modern telecommunications systems such as PSK and ASK, and sometimes FSK, are based on the principle of QAM. The I and Q signals can be combined into a complex-valued signal I+jQ (where j is the square root of -1). The resulting equivalent low-pass signal (baseband signal) is a representation of the real-valued modulated physical signal (called pass-band signal or RF signal). Digital Signal Processing (DSP) is key to both modulation and demodulation. In modulation (transmitter) DSP is used for pulse shaping needed to limit the bandwidth and form the spectrum of the equivalent low-pass signal, in the digital-to-analog conversion of the I and Q signals, in the generation of the high-frequency sine/cosine wave carrier waveform quadrature components, and modulation by multiplying the sine and cosine wave form with the I and Q signals resulting in the equivalent low pass signal with direct digital synthesis using waveform tables. In demodulation (receiver) DSP is used for channel equalization and attenuation of narrow-band interference as well as wave shaping. In this tutorial the novice will learn the basic concepts of DSP used in modern wireless systems while the expert will learn some specific techniques for speeding up processing through pipelining and new techniques for narrow-band interference attenuation in the broadband receiver using adaptive heterodyne filters. Biography

Michael Alan Soderstrand Offering 40-years of experience including 11 years industry experience in computer-based design for telemetry, control systems and automatic test (Sandia National Laboratories) with 36 years of teaching and research including 26 years teaching Electrical and Computer Engineering at University of California, Davis, 5 years as Head of the Electrical and Computer Engineering Department at Oklahoma State University, 4 years as Adjunct Professor of Electrical Engineering and Computer Science at the DeVry University Oklahoma City Center and Adjunct Professor of Math, Statistics and Computer Science at Southern Nazarene University. Dr. Soderstrand is currently Adjunct Professor of Electrical Engineering at Yonsei University in Seoul, Republic of Korea. He was elected Fellow of the IEEE in January 1999 and Life Fellow of the IEEE in January 2011.

16

Invited Paper 15:35-16:05, Thursday, February 2, 2012 Session: TA3 Room: Hambaek 1 Metal Oxide Nanowires for Transparent Electronics Applications Guozhen Shen (Huazhong University of Science and Technology, China) Transparent electronics has attracted great research efforts in recent years due to its potential to make significant impact in many areas, such as next generation displays, UV detectors, solar cells, charge-coupled devices (CCDs) and so on. Central to the realization of transparent electronics is the development of high performance fully transparent thin-film transistors (TTFTs). Transparent metal oxide nanowires are one of the best candidates to make fully transparent TFTs. Biography

Dr. Guozhen Shen received his Ph.D. degree in Chemistry from University of Science and Technology of China in 2003. He conducted his postdoctoral research at Hanyang University, Korea in 2004 and then joined National Institute for Materials Science, Japan (2005–2007) and University of Southern California. Currently, he is a professor in Wuhan National Laboratory for Optoelectronics (WNLO) and Huazhong Univeristy of Science and Technology (HUST), Director of Opeoelectronics for Energy Laboratory, and Assistant Direct of WNLO. He is the author or co-author of more than 130 research articles in peer reviewed journals and 7 book chapters. His most recent research interests include the synthesis and characterization of one-dimensional nanostructures and their device applications in electronics and optoelectronics. Dr. Guozhen Shen is the Executive Editor of Frontiers of Optoelectronics, an assistant editor of Nanoscale Research Letters, an Asian Associate Editor of Journal

of Nanoengineering and Nanomanufacturing, Associate Editor of Reviews in Advanced Science and Engineering, and an Editorial Board Member for more than 10 international journals. He was awarded as Distinguished Professor of the Hundred Talents Recruitment Program of Global Experts of Hubei in 2010, and New Century Excellent Talents of Ministry of Education in 2011. Research Interests 1. Synthesis and design of novel nanostructures, characterization and their assembly. 2. Nanoscale functional devices, including transparent thin-film transistors for displays, chemical/bio sensors,

photodetectors, etc. 3. Nanotechnology for sustainable energy applications, including nanowire solar cells, dye-sensitized solar cells,

and li-ion batteries.

17

TA1: Semiconductor Devices Thursday, Feb. 2, 2012, 09:15-10:30 Hambaek 1

Chair: Guozhen Shen (Huazhong Univeristy of Science and

Technology, China) 1. Frequency Response of a Common-Source (CS) Amplifier Embedding Ge/GaAs Heterojunction-Based Tunneling Field-Effect Transistor (TFET) Seongjae Cho, James S. Harris, Jr. (Stanford University, USA), Hyungjin Kim, Byung-Gook Park (Seoul National University, Korea) In this work, Ge/GaAs heterojunction-based tunneling field-effect transistor (TFET) is brought into the configuration of a common-source (CS) amplifier as the active device and its frequency response is investigated. Mixed-mode simulations are performed to obtain an operating point and characterize the circuit. The amplifier demonstrates stable performances as a low-pass filter up to its 3-dB roll-off frequency (f-3dB) as high as 458 GHz and the unity voltage gain (Av) is observed at 20 THz at a given bias condition 2. Modulation of Control Gate Capacitance of Single-Electron Transistor Using Side-Gate Voltage Joung-Eob Lee, Kanji Yoh (Hokkaido University, Japan), Kyung-Wan Kim, Jung-Han Lee, Kwon-Chil Kang, Byung-Gook Park (Seoul National University, Korea) Recently, single-electron tunneling phenomena in silicon nanostructures have been widely researched in terms of multifunctional logic and ultra-low-power nanoelectronic device applications.[1] The possibility and application of the integration of the silicon nano structure into complementary metal-oxidesemiconductor (CMOS) devices have special advantages. Until now, various single-electron tunneling devices have been fabricated with silicon-oninsulator (SOI) nanowires. Various novel approaches have been used to increase operation temperature. Furthermore, room-temperature single-electron circuits have been demonstrated. In this study, a room-temperature operating SET based on an electrically formed quantum dot is fabricated by conventional CMOS processes such as polycrystalline silicon (poly-Si) sidewall formation on the recessed channel structure. The Coulomb island on the channel is formed by a poly-Si sidewall gate with electrical tunneling barriers. Also, by using the side gate bias of the device, the drain current and oscillation peaks are effectively modulated. 3. Investigation of Poly Depletion Effect in 3D Stacked NAND Flash Memory Joo Yun Seo, Yoon Kim, Se Hwan Park, Wandong Kim, Byung-Gook Park (Seoul National University, Korea) We investigate the effect of dopant concentration of poly-Si gate on the program characteristics in 3D stacked NAND flash memory by using TCAD simulation. Also, we propose the fabrication process that enables us to adopt metal gates to 3D NAND flash memory structure.

4. Formation Mechanism of Layered Structure in SiO2-Doped Ge2Sb2Te5 for Phase-change Random Access Memory Application Seung Wook Ryu (Stanford University, USA), Jong Ho Lee, Young Bae Ahn, Hyeong Joon Kim (Seoul National University, Korea) In this work, the formation mechanism of microstructure in SiO2-doped Ge2Sb2Te5, which has been reported to be a phase-change material with high thermal efficiency, is investigated. High thermal efficiency is induced by the lowering of thermal conductivity. It is ascribed to the formation of layered structure by inhomogeneous SiO2 distribution. For layered structure to be formed, there must be anisotropic driving force in the direction parallel to the substrate. In order to verify the phenomenon, transmission electron microscopy (TEM) inspection after annealing treatment and stress measurement during thermal cycling were performed. It indicates that increase of tensile stress by SiO2 doping generates a critical driving force for the formation of layered structure. 5. Bias Polarity Dependency on NiO-based Unipolar Resistive Switching by Insertion of Nickel Layer Seung Wook Ryu, Liang Zhao (Stanford University, USA), Jong Ho Lee, Young Bae Ahn, Hyeong Joon Kim (Seoul National University, Korea) In this study, unipolar resistive switching (RS) characteristics of NiO-based RS device with Ni insertion layer are investigated. NiO with Ni insertion layer shows improved RS compared with those without the Ni layer. The underlying reason is the interfacial layer formed between Ni and NiO. RS characteristics in Pt/Ni/NiO/Pt depends on bias configuration, which is influenced by the interfacial layer. Based on experiments, a filament model for bias configuration effects in the unipolar RS was derived from the combined effect of O-vacancy formation/migration and the interfacial layer at Ni and NiO. TB1: IT Business & E-Commerce Thursday, Feb. 2, 2012, 09:15-10:30 Hambaek 2

Chair: Moo Young Kim (Sejong University, Korea) 1. The Economic Mechanism of Use of Innovative Processes in Enterprise Activity of The Republic of Uzbekistan Rakhimboev Sardor Kakhramonovich (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider methodical approaches in an estimation of efficiency of innovations. Carrying out of the state scientific and technical policy is in present period an integral part of successful development of national economy. Necessity of state regulation of innovative processes is caused first of all by their increasing national value, and also the economic maintenance. Growth of innovative business is

18

considered now as the major tool of development and transformation of economic system in the conditions of scientific and technical progress (STP) and a key resource in maintenance of competitive advantage. 2. Current state and Perspective Developments of Electronic Commerce in Uzbekistan Yusupov Qudrat Mukhammadqodirovich, Khasanov Azizbek Islambaevich (Tashkent University of Information Technologies, Uzbekistan) Info communications are called the locomotive of economy since wide circulation of ICT and active introduction of modern decisions in this sphere cardinally change the way of peoples life in the different countries, open additional possibilities for conducting enterprise activity. Uzbekistan is not an exception. As a vivid example to that is served by dynamical development in the republic of some ICT’s segments are networks of data transmission, information Internet resources, and on their base of electronic document circulation, business and commerce. 3. E-commerce Development in the Republic of Uzbekistan Turdiev Farrukh Olimovich, Toirova Mubina Akhmadjanovna (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues developing ecoomerce in the Republic of Uzbekistan with the help of foreign experience and government’s right decisions as the e-market is becoming the most profitable and convenient way of commerce. 4. Analysis of Foreign Investment Attracted into the Republic of Uzbekistan Eshkuvvatova Iroda (Tashkent University of Information Technologies, Uzbekistan) Foreign investment prospects of the Republic of Uzbekistan are discussed in this paper. Importance of the foreign investment in the economy is considered Some information about principals of investment policy of Uzbekistan is given. Also, development information of foreign investment is shown. Role of foreign investment in the sphere of ICT and its development in Uzbekistan are discussed. Conclusion considering further development of attracting foreign investment to the sphere of ICT is formulated. 5. Plans of Tariffs and Prices of the Services on the Cellular Market of Uzbekistan Elchieva Shakhnoza (Tashkent University of Information Technologies, Uzbekistan) Plans of tariffs on the mobile phone market in Uzbekistan are discussed in this paper. Advantages of different plans of tariffs, which are offered by different companies, are considered. Some information about prices of services is given. Also, examples plans of tariffs are shown. Conclusion considering development of tariffs and price of services is formulated.

TC1: Computer Systems and Application Thursday, Feb. 2, 2012, 09:15-10:30 Hambaek 3

Chair: Minho Jo (Korea University, Korea) 1. Detection and Elimination of Code Redundancy in Embedded Multimedia Application Jaehyeong Jeong, Yong Ho Song (Hanyang University, Korea) In embedded systems, it is crucial to keep the executable code as small as possible because of high memory cost. However, it usually takes a lot of time and effort. In this paper, we propose a tool, called Source Code Screen (SCS), for the detection and elimination of code redundancy in embedded multimedia applications. This tool effectively contributes to reduce the executable code for the H.264/AVC baseline profile decoder by 13.5%. 2. Implementation of Status-based Sequential Tree Algorithm for MPI Scatter Communication June-hyun Lee, Won-young Chung, Ki-woong Eom, Yong-surk Lee (Yonsei University, Korea) In this paper, we propose the Message Passing Engine for Scatter (MPES) architecture, which is operated by a proposed status-based sequential tree algorithm. The transmission order of the scattering is arranged according to the processing node status. In the simulator that applies the proposed algorithm, when the number of processing node was increased to 8 and 16, the performance increased to 68% and 74% respectively. The size of the proposed MPES is approximately 1.18% larger than the previous MPI hardware unit. Therefore, the high performance improvement is expected in MPSoC if the MPES is used. 3. Analyzing the Memory Access Behavior of a Booting Process Utilizing a Fast Full-System Analysis Tool DongYul Lee, Seongil O, Seungwoo Lee, Jung Ho Ahn (Seoul National University, Korea) Full-system simulators, which can execute operating systems as well as applications, are widely used for computer architecture studies. However, slow simulation speed makes them less effective as analysis tools to gather system-level information such as memory access behavior and execution instruction breakdown. On the other hand, fullsystem emulators can also execute operation systems and could be much faster than full-system simulators. We modify QEMU, a widely used emulator, to ‘be’ a fullsystem analysis tool and demonstrate its utility by applying it to analyzing the memory access behavior of the booting process on Android 2.3.

19

4. Adaptive Replacement Cache in Transactional Memory Dongmin Choi (Samsung Electronics, Korea), Hyunkyu Park, Seung Hun Kim, Won Woo Ro (Yonsei University, Korea) Previous Transactional Memory (TM) models cannot efficiently handle cache misses in long transactions. To overcome these problems of the cache misses, we have adopted the concept of existing efficient cache replacement policy, ARC (Adaptive Replacement Cache), to a previously proposed TM system. We have evaluated the performance of our suggestion by considering LogTM-SE with and without ARC. Consequently, simulation results show that our proposed design achieves substantial performance improvement up to 37% compared to LogTM-SE. 5. A u-Tour System for a Guided Group Package Tour JinSheok Kim, NamHyun Yoo, Su Yeoung Yang (Elsys Co., Ltd., Korea), JuHyun Yoo, WonJung Kim (Sunchon National University, Korea), Heon Jeong (Chodang University, Korea) New ICT (Information and Communication Technology) such as mobile computing has effected on tourism industry. This has made tourists happier and more convenient. Thus, it brings about new trend, “How to converge ICT Source properly to help human life.” This paper proposes a new ICT convergence system, ‘u-Tour system.’ The system provides group tourists with audio information about at their visiting places. The system also allows a tour leader to check automatically personnel everywhere to prevent group tourists from straying. TD1: IT-Convergence Thursday, Feb. 2, 2012, 09:15-10:30 Taebaek 1

Chair: Taewook Kim (Yonsei University, Korea) 1. Representation System of Multi-Device Video based on Convergence Media Hyun-Woo Oh, Jong-Hyun Jang, Kwang-Roh Park (Electronics and Telecommunications Research Institute, Korea) We propose the system of presenting multi-device video based on convergence media. It represents the real-sense effect of multi-device video based on convergence media, comprising: a transmission apparatus for extracting objects from convergence media, analyzing behavior patterns of the objects to recognize situation of the behavior patterns of the objects based on an ontology profile, generating realsense effect metadata depending on the recognized situation, and producing the real-sense effect metadata,the ontology profile and the convergence media along with document and action script into a single media for the transmission thereof; and a reception apparatus for extracting, upon receipt the single media,the real-sense effect metadata from the received single media, collecting real-sense effect devices existing in reproduction environments, analyzing how to control any of the real-sense effect devices based on the ontology profile, and presenting the real-sense effect by using the real-sense effect devices.

2. A Study on the Human Body Activity and Falls Measurement system for the Elderly Ki-Man Jeon, Chae-Young Lim, Kwang-Cheol Koh, Kyung-Ho Kim (Korea Electronics Technology Insititute, Korea) As we are turnning into the aged society, accidents by falling down are increasing in the aged people's group. In this paper, we design the system with the 3- Axis acceleration sensor which is composed by a single chip. The body activity signal is measured with the signal detector and RF communicator in this proposed system and the and falling by the entering signal pattern analysis with 3-Axis acceleration sensor. For the RF communication, we are using nRF24L01p and 8bits ATmega uC for the processor. The error of energy expenditure estimation between motor driven treadmill and proposed a body activity module was 7.8% respectively. Human activities and falling is monitored according to analyze and judge the critical value of the Signal Vector. as falled down if they don't turn off the alarm after specific period and the aged person's after falling down activities are their position and more. 3. RFID-based the SME Algorithm for the Multi-lane-supported ETCS Jin Cha, Jong-In Jung, Sang-Woo Chang, Jong-Kyun Hong, Sang-Sun Lee (Hanyang University, Korea) In this paper, the Supporting Multi-lane ETCS(SME) algorithm attaching data flow and form into Radio Frequency Identification(RFID) communication technology was newly suggested to overcome technical problems on RF-DSRC communication system. In addition, in order to verify the SME algorithm, experiments based on ETCS and 900Mhz RFID were carried out. From the result of experiment of RFID dependent on the velocity and precision experiment of information inside of RFID, RFID is detected below 70Km/h and the precision of estimation is more than 90%. 4. An Distributed Collaborative Adaptive Sensing Radar Network for Korean Environment V. Chandrasekar, Sanghun Lim, Ki-Ryong Kwon, Bong-Joo Jang (Colorado State University, USA) A dense weather radar network is an emerging concept advanced by the Center for Collaborative Adaptive Sensing of the Atmosphere. The center has pursued an innovative densely networked sensing paradigm, called “Distributed Collaborative Adaptive Sensing”, to overcome the resolution and coverage limitations of traditional weather radars using low-cost, densely networked radar systems. At densely populated metropolitan area or complex mountainous terrain, this adaptive localized radar network concept has great potential to assist in the control and prevention of natural disasters caused by severe weather events.

20

5. Weather Radar Information Management Ki-Ryong Kwon, Sanghun Lim, V. Chandrasekar (Colorado State University, USA), Suk-Hwan Lee (Tongmyong University, Korea) In this paper, we introduce the requirements for compression, security and alert broadcasting service for weather radar information management. Our research plan is to develop three main techniques for weather radar image management; 1) weather radar image compression and vision-based weather analysis, 2) weather radar image watermarking, 3) automatic alert broadcasting service model. TE1: Computer Systems and Applications Thursday, Feb. 2, 2012, 09:15-10:30 Taebaek 2

Chair: Won Woo Ro (Yonsei University, Korea) 1. A Low-Complexity Adaptive Model of Complex Background Jeisung Lee, Seuk Gyo Suh, Mignon Park (Yonsei University, Korea) In visual surveillance, background subtraction is an important issue to extract foreground object. A challenge problem for background subtraction is that the backgrounds are non-stationary. There are problems to overcome such as waving tree and rippling water. This paper presents an adaptive method of robust foreground detection by using a changing rate of background. This method has lower complexity, lower memory required and more accuracy than the prior methods. The performance is proved by comparing it with other methods. 2. A Method of Human Posture Recognition Based on Skeletal Feature Analysis Nhan Nguyen-Duc-Thanh, SangYup Lee, Lan Anh Trinh, DongHan Kim (Kyung Hee University, Korea), Sang Yep Nam (Kook Je College, Korea) In order to improve the recognition rate in Human Posture Recognition problem and to deal with the restricted number of postures, this paper introduce new human posture recognition method based on analyzing the skeletal features. The skeletal features are then extracted for posture classifier together with important coefficients between features of each posture for more accuracy outcome. We do the experiment with various numbers of postures and the comparison with other methods is shown to evaluate the performance of this method. 3. Novel Calibration Method between Wide Angle Stereo Cameras and Dual Narrow Angle Cameras on Pan-Tilt Unit Dong-Chan Cho, Wah-Seng Yap, Hoo-Hyun Kim, Whoi-Yul Kim (Hanyang University, Korea), Injae Lee, Hee-Kyung Lee, Jihun Cha (Electronics and Telecommunications Research Institute, Korea) We propose a novel calibration method between wide angle

stereo cameras and dual narrow angle cameras which are mounted on a pan-tilt unit. We suggest the usage of a virtual image plane which simplifies the complicated calibration between wide-angle camera and narrow-angle camera on pan-tilt unit to a simple 3D-2D projection. 3D-2D projection matrix is calculated from the 3D points which are obtained from the stereo camera and 2D points which are obtained from pan and tilt angles. In the experimental results of our eye tracking system, the proposed method applied shows that the narrow angle camera can track an eye robustly even though the person moves around in a wide area at 2m distance. 4. Design and Implementation of an Embedded Visual Fatigue Evaluation Algorithm Khaled Tahraoui, Chan Oh Park, Jun Dong Cho (Sungkyunkwan University, Korea) This paper introduces an embedded content-aware Stereoscopic Auto Focus algorithm to reduce visual discomfort. For real-time implementation, we propose a visual fatigue prediction algorithm in which we establish a focus based on a comfort zone modeling function and the size of occupied area by objects in the scene. To verify our system we built a complete System-on-Chip solution including disparity map calculation on FPGA. 5. Methodical Approaches in an Estimation of Efficiency of Innovations Tursunov Sherzod Abduqodirovich (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues of methodical approaches in an estimation of efficiency of innovations. The problem of a complex estimation of efficiency of innovations constantly was and is in the center of attention of scientists-economists and headsexperts of various levels and ranks. And before to start consideration of concrete techniques of an estimation of innovative projects, it is expedient to stop on some methodological questions in sphere of investments, being guided thus by a current state and prospects of development of national economy. Generally the problem of an estimation of efficiency of investments arises before the potential investor, i.e. before that managing subject in which order there are the resources which investment can bring to their proprietor some benefit. TF1: Signal Processing Thursday, Feb. 2, 2012, 09:15-10:30 Taebaek 3

Chair: Seokhyun Yoon (Dankook University, Korea) 1. Frequency Estimation of Sinusoidal Signals Contaminated with White Noise Umid Niyazov, Rustam Abdurakhmanov, Javlon Abdujalilov (Tashkent University of Information Technologies, Uzbekistan) This paper is dedicated to frequency estimation methods. The main attributes of the methods are stated. The modified algorithm is proposed and by simulation the comparision among methods are examined.

21

2. Piece-wise Linear Look Up Table Predistorter for Power Amplifier Linearization Technique Yongjin Ahn, Ilgyu Choi, Chungyong Lee (Yonsei University, Korea) To minimize the effect of quantization error to look up table (LUT) based predistortion, we propose a piece-wise linear LUT predistorter with additional operations for linear function. The simulation result shows that the proposed scheme exhibits similar PSD and EVM performance to the conventional LUT equipped with 4 times larger table size. 3. Development Prospects of Electronic Document Circulation System in Uzbekistan Radjabov S.Ozod (Tashkent University of Information Technologies, Uzbekistan) New way of document circulation which we can use with newest information technologies is discussed in this paper. Advantages for government, commerce and for other participants from the implementation of this way are considered. Some information about legislation documents is given. Also, example about electronic document circulation system in TUIT and its branches is shown. Conclusion considering development of electronic document circulation system is formulated. 4. Decimation Filter Design for High-Resolution Audio Based on 180nm CMOS Process Au Huynh, SoYoung Kim (SungKyungKwan University, Korea) In this paper, we deal with the design and hardware implementation of a decimation filter used in Sigma-Delta A/D converters for high performance audio application. A 32-bit four-stage decimation filter with down-sampling factor of 512 is developed. This filter is implemented based on semi-custom design flow, and an 180nm CMOS std-cell library. The decimation operates at 98.304 MHz and provides the 32-bit output data at audio frequency of 192 kHz. 5. Media based Lighting Real Feeling Effect Extraction in Multi-sensory Media Service Platform Jiyeon Kim, Jonghyun Jang, Kwangroh Park (ETRI, Korea), Hoon Choi (Chungnam University, Korea) This paper presents a real feeling lighting effect extraction method of Multi-sensory media service platform for real feeling experience. Recently home network technology and multiple playback devices let users to interact with media and reflect their idea on real effect media content authoring. In this paper, we suggest media based lighting effect MSE (Media based Sensory Effect) algorithm to enhance real effect experience.

Poster 1: Semiconductor Devices IT-Convergence Modeling and Simulations Thursday, Feb. 2, 2012, 09:15-10:30 Lobby, 5F

Chair: Byung-Gook Park (Seoul National University,

Korea) 1. Resistive Switching Characteristics of TiOx-based RRAMs Formed by Ti Oxidation and ALD Process Sunghun Jung, Jeong-Hoon Oh, Kyung-Chang Ryoo, Sungjun Kim, Byung-Gook Park (Seoul National University, Korea) Using oxidized Ti samples and ALD TiOx samples, we have obtained different initial resistive switching operation depending on the initial cell condition. While the ALD TiOx samples need the forming process to form the conductive filament (CF), the oxidized Ti samples do not need the forming process because the initial switching operation itself is a reset process, showing the possibility of forming-free RRAM. 2. Investigation of Poly-Silicon Quantum Dot Single Electron Transistor with SONOS Structure Jung Han Lee, Kwon-Chil Kang, Kyung Wan Kim, Won Bo Shim, Byung-Gook Park (Seoul National University, Korea) In this paper, poly-silicon quantum dot single electron transistor (PQD-SET) with SONOS structure that can control oscillation phase is proposed and demonstrated through a simulation work. Its structure consists of source/drain, tunneling oxide, poly-silicon quantum dot and control gate whose dielectric is composed of Oxide/Nitride/Oxide (ONO). Since injected charges in nitride induce the coupling with PQD-SET, the phase can be shifted and it is verified via simulation work. 3. Conduction Mechanism of Al-inserted NiO-based Resistive Random Access Memory (RRAM) for High Density and Low Power Application Sungjun Kim, Kyung-Chang Ryoo, Jeong-Hoon Oh, Sunghun Jung, Byung-Gook Park (Seoul National University, Korea) Aluminum (Al) inserted NiO based resistive switching random access memory has many advantages compared to conventional structure due to localized conducting filaments. However, some issues originated from the inserted Al layer may cause degradation of switching characteristics. Therefore, it is important to investigate the differences between Al inserted cell structure and conventional cell structure through the conducting mechanism.

22

4. Simulation of Hump Characteristics in Oxide Thin Film Transistors with a Trench Gate Jang Hyun Kim, Hyun Woo Kim, Byung-Gook Park (Seoul National University, Korea) Based on the analysis of hump characteristics in oxide thin film transistors (TFT), a trench gate structure is proposed to reduce the electric field crowding at the edge of channel. Simulation results show that the trench gate TFTs have lower electric field than that of conventiona gate at the edge region. It demonstrates that the trench gate is expected to reduce the hump phenomena. 5. Enhanced Ambipolar Characteristic of Tunneling Field-effect Transistors Using Doped Region Hyungjin Kim, Sang Wan Kim, Min-Chul Sun, Hyun Woo Kim, Garam Kim, Jang Hyun Kim, Euyhwan Park, Byung-Gook Park (Seoul National University, Korea) Tunneling field-effect transistors suffer from the ambipolar characteristic. In this paper, we propose a technique to suppress the ambipolar characteristic using an additional doped region between channel and drain. The reduction of off-state leakage current depending on the doping concentration of the region is investigated. 6. Effect of Inter-poly Dielectric Thickness Variation on Flat Band Voltage Shift in Flash Memory Applications Jun Yeong Lim, Pyung Moon, Ilgu Yun (Yonsei University, Korea) As the device size in the chip shrinks, shrinking the size of the insulators including tunneling oxide and the inter-poly dielectric is mainly focused on the research due to the degradation by the leakage current. In this paper, the effect of the each layer of the Inter-poly dielectric (ONO) to the leakage current is analyzed by using the flat band voltage shift and this analysis of the flat-band voltage shift in DRAM Flash memory is investigated using statistical analysis. 7. Variation of Threshold Voltage and ON Current Caused by Gate Length and Nanowire Diameter Fluctuation in Junctionless 3D NAND Flash Memory Wandong Kim, Yoon Kim, Se Hwan Park, Joo Yun Seo, Do-Bin Kim, Byung-Gook Park (Seoul National University, Korea) In this paper, we investigate the variation of threshold voltage and ON-cell current induced by cell gate length and nanowire diameter fluctuation in junctionless 3D stacked NAND Flash memory. The cell gate length and nanowire diameter fluctuation caused by process errors affects I-V characteristics considerably in junctionless NAND flash memory array. To analyze this, 3D TCAD simulation was performed and the results are discussed, rigorously.

8. Ambipolar Behavior of L-shaped Tunneling Field-Effect Transistors Sang Wan Kim, Min-Chul Sun, Hyun Woo Kim, Byung-Gook Park (Seoul National University, Korea) Woo Young Choi (Sogang University, Korea) A tunneling field-effect transistor (TFET) has been considered as one of the future low-operating-power (LOP) devices because it can achieve low subthreshold swing (SS) smaller than 60-mV/dec. However, it suffers from several problems such as low current drivability, slow operation speed and ambipolar behavior. In this paper, the ambipolar behavior of L-shaped TFETs has been discussed. 9. Effect of Gate Stress Time Duration on Threshold Voltage for Amorphous InGaZnO Thin Film Transistor Characteristics Suehye Park, Edward Namkyu Cho, Ilgu Yun (Yonsei University, Korea) Amorphous InGaZnO (a-IGZO) TFTs attracted more attentions because of their large drain current (IDS) on-off ratio and high mobility. As TFTs are always exposed to gate bias, the stress-related tests are very meaningful. In this paper, the effect of the gate bias on the threshold voltage shift ( Vth) of a　 -IGZO TFTs varying with the channel length (L) and the stress time duration (Tstress) is investigated using statistical analysis. 10. Study of Boron Emitter Passivation with Silicon Nitride Jaewoo Choi, Kyuwan Song, Woojin Choi, Junsin Yi (Sungkyunkwan University, Korea) SiNx as passivation layer for boron emitter has been studied. The higher refractive index (Si-rich) 2.3 provides the best passivation layer, but at higher temperature (800- 900°C), the passivation quality has changed. The firing stability was analyzed by FTIR and it showed that less change of Si-N bonding with refractive index of 1.84 was more thermally stable, better passivation quality and hence better efficiency.[1,2] In this study refractive index of SiNx was varied and we optimized a thermally stable passivation layer after high temperature metallization process which resulted with n=1.84, Jsc 38mA/cm2, efficiency = 17.1% on n type silicon solar cell. 11. Non-volatile Memory Using a-Si:H and a-SixGey:H as the Active Layer Woojin Choi, Kyungsoo Jang, Jaehyun Cho, Kyunghyun Baek, Kyuwan Song, Juyeon Jang, Jaewoo Choi, Junsin Yi (Sungkyunkwan University, Korea) We report the SiO2/SiOx/SiOxNy (OOxOn) stacked NVM using an Amorphous Silicon (a-Si) and Silicon Germanium (a-SiGe) as an active channel layer non-volatile memory (NVM). According to the results switching characteristics of a-SiGe were better. SS(Subthreshold Slope) of a-SiGe and a-Si are indicated 0.69 and 0.74, respectively. In addition, the a-SiGe NVM retention ability showed significantly

23

improved results of 58% compared to that of a-Si later 10 years. As a result of this study, NVM using a-SiGe:H confirmed the continued applicability. 12. Effect of Geometry Aspect Ratio on Elliptical Gate-All-Around SONOS Nanowire Myoung-Sun Lee, Jong-Ho Lee (Seoul National University, Korea) We have investigated characteristics of cylindrical Gate-all-around (GAA) SONOS memory cell with an elliptical cross-section by 3D TCAD simulation since cross-sections of most fabricated Gate-All-Around SONOS memory cells are elliptical not circular. Because of properties of an ellipse, curvature around the elliptical SONOS cell is not uniform, which gives electric field difference between the gate stacks of major and minor axes of a cell. Thus, when the elliptical SONOS cell is turned on, channel current is not evenly distributed around the silicon body and it has a vital effect on the program efficiency. 13. Cost Analysis for Regular Protein Requirements by Using Fuzzy Logic Controller Md. Mostafa Kamal Sarker, Dong Sun Park (Chonbuk National University, Korea) The objective of this research is that the cost estimating procedure of food (vegetable, fish, and meat) for our regular protein percentage using fuzzy logic in the environment of MATLAB. The fuzzy logic controller (FLC) based on fuzzy logic provides a means of converting a linguistic control strategy based on expert knowledge into an automatic control strategy. We can split the problem into a discrete number of possible decisions by associating fuzzy logic membership functions with each input and output. The accuracy of the output depends on how many membership functions we define and how many rules we implement. 14. Lifetime Estimation of Ceramic LED Packages Using Accelerated Lifetime Tests Byungjin Ma, Jemin Kim, Sungsun Choi (Korea Electronics Technology Institute, Korea) Lifetimes of ceramic package estimated by temperature-stress accelerated lifetime tests. And the relationship between thermal property and lifetime was investigated. 15. Measurement of Visual Fatigue for 3D Images using Eye- Blinking Soon Suk Park, Jun Hoe Heo, Yong Han Kim, Gu Sang Kwon, Jun-Dong Cho (Sungkyunkwan University, Korea) With the advances in 3-D technology, many techniques that create efficient images are in use. However, most studies have been focused on the development of 3D images and not on the side effects that can occur from watching images in 3D, such as visual fatigue. This paper is aimed at studying visual fatigue as a result of watching 3D images by measuring eye-blinking, analyzing objective data and examining 3D content to find out what causes an increase or decrease in visual fatigue.

16. Touch Display using Projected Capacitive Touch Sensor and Its Sensing Algorithm Sang Hyuck Bae, Yong S. Lee (Yonsei University, Korea), Sang-Soo Hwang, Cheolse Kim, ManHyo Park (LG Display, Korea) Common touch screen is add-on type which places touch sensors on the separated substrates or panel with display. We made projected capacitive type touch sensors on Liquid Crystal Display using conventional LCD fabrication processes. Touch sensors are formed on back side of color filter glass and this touch screen structure is classified as on-cell projected capacitive type. For NBPC application, we made a 13.3”-sized touch LCD that has on-cell type touch sensors. In this paper, we discuss projected capacitive touch technologies and their touch recognition algorithm. 17. Design and Implementation of Electronic Dashboard Joong-Sub Kim, Won-Yong Yang, Jong-Yeol Lee (Jeonbuk National University, Korea) Nowadays, researches about Vehicle Control System is actively in progress. As a vehicle becomes more intelligent, kind of sensors and electronic control units which are attached to the vehicle are increasing. In this paper, we describe about implementation of an electronic dashboard which can display the vehicle information hone platform. 18. Control of the Domestic Appliances Using the Android Open Accessory Development Kit YunSu Choi, Dae In Choi, Hyun K. Kahng (Korea University, Korea) The Android has become an OS that accounts for the dominant market share. Although the Android currently accounts for 50% or more of the smart phone market, it has a relatively small number of universal accessories and additional devices. The Android open accessory development kit (ADK) is a way of addressing the problem that ensures the connectivity via the common protocol proposed in Google I/O 2011. The ADK controls the Arduino-based embedded hardware using the Android device. In this study, the domestic appliances were controlled via the Android device, using the ADK-API. 19. Development of AC Engine Driver for 12x12 Flat Light System Sung-Il Hong, Chi-Gook In, Min-Woo An, Chi-Ho Lin, Dal-Hwan Yoon (Semyung University, Korea) In this paper, we have developed AC operation driver engine for 12x12 flat light systems. The one use a LIDPC-R101B driver IC that can guarantee the high power factor and the LED switching circuit in group. Also, the system designed can guarantee an efficiency above minimum 83 %, a high reliability and RoHS selected and 40 W in 220 ~ 230 V. The system is the ultra slim type of 450x450 mm, width of 4 mm and weight of 280 g. We have experiment the current signal of the switching resister and LED group coefficient in switching output of LED group. The number of test is 40 times per 15 minutes between -40℃ and 80℃.

24

20. A Study on the Design and Fabrication of a Large-scale Light Illumination System Jae-Hyoun Park, Kwang Hyeon Baik, Hyung-do Yoon (Korea Electronics Technology Institute, Korea), Chang-Bae Kim (Saltware, Korea) A large-scale day light illumination system is designed and fabricated in order to effectively improve the energy efficiency by concentrating and transmitting daylight via the waveguide and the optical fibers. We report a large-scale illumination system with designing the Fresnel lens, which was made of PMMA. The efficiency of fabricated Fresnel lens was measured to be 56% at 12 AM, 57% at 1 PM, 58% at 2 PM, and 59% at 3 PM, showing that the excellent performance among the Fresnel lens for a large-scale light illumination system. 21. Development of the Automatic Plant Factory System in Vertical Farm by Convergence of Information Technology Sang-Woo Lee, Sang Dug Lee, Sang Youn Sim, Hae Im Chung, Young Seok Lee, Sung Kee Kim, Jae Wook Lim (Gyeonggi-do Agricultural Research and Extension Services, Korea), Chang-Bae Kim (Saltware, Korea) We developed an automatic plant factory system where IT technology and automatic robot system were applied. This robot system worked automatically by program. Two lines of multi-shelves beds for plant cultivation were constructed, and robot is automatically moved back and forth between lines to transfer plant beds. Computer control system was established to control robot and micro-environmental condition over ethernet communication local network. All of micro-environmental condition data of each bed were saved in computer and we can analysed plant cultivation history of each bed in plant factory system. A special pot and transplanting plates were developed for leafy vegetables in a plant factory. We also established optimum LED light intensity for lettuce cultivation with 450nm and 660nm LED chips. 22. Reliability Enhancement of Sensor Measurements in Intelligent Plant cultivation System with Complex Event Processing Chang-Bae Kim, Jae-Sun Choi (Saltware, Korea), Sang-Woo Lee (Gyeonggi-do Agricultural Research and Extension Services, Korea) This paper describes the architecture of an event processing system for acquiring reliable measurement values from a sensor system applied in a plant cultivation system. Central part of the event processing system is the complex event processor where continuous streams of measurement values are filtered and only values within a dynamically determined tolerance range are transferred to the event subscribers excluding erroneous values. 23. Named Objects on Web (NOW) Young S. Han (University of Suwon, Korea) Resource level domain names and the object models give a

new way of web computations that is modular, autonomous, and robust. Objects on web can be a platform to render useful computations such as real time applications and collective inferences. Objects are cells of computations that are semantically wired and they can be regarded as an extension of semantic web. This paper suggests an abstract model of object based computation on web. The components and functionality of the objects are described. We claim that the suggested model can complement Semantic Web model and spawn a class of web services. 24. Abstraction of Application Behavior for High-performance SoC Simulation Song Hyun Jo, Yong Ho Song (Hanyang University, Korea), Joonhwan Yi (Kwangwoon University, Korea) The increasing complexity of SoCs and embedded system leads to increasing simulation time. Therefore, fast simulation methods are required. This paper briefly presents highly abstracted simulation method called high system level simulation, and then its software model and automatic generation technique are proposed. Simulation results show proposed simulation methodology performs H.264 decoder reference software simulation, and results in 9.4% difference in terms of execution time compared to real system. 25. Investigation of Hysteresis Characteristic in Thin Film Transistors with Smart SPICE and Verilog-A for Circuit Simulation Younghwan Son, Shinhyung Kim, Dong-Hyuk Chae, Seulki Lee, Hyungcheol Shin (Seoul National University, Korea) The current non-uniformity such as the hysteresis phenomenon is easily observed in the thin film transistor (TFT) and this phenomenon can cause some serious problems. This paper investigates the hysteresis characteristics in TFT. The simple model of changed parameters, because of the hysteresis characteristic, is introduced. Finally, a methodology for simulation of the hysteresis phenomenon with Smart SPICE and the presented method is confirmed with circuit simulation. 26. Fault detection & Classification in Plasma Etch Process Using Local Outlier and Dempster-Shafer Methods Sung-Hwan Shin, Yi-Seul Han, Seung-Soo Han (Myongji University, Korea) The semiconductor fabrication equipment has tens to millions of sensor signals. Monitoring sensor signals can be used for wafer quality in the Fault Detection & Classification (FDC) system. In this paper, a conjunction with Local Outlier Factor (LOF) and Dempster-Shafer Theory are used to detect and decide fault using capacitor position and RF power in plasma etch process.

25

27. Temperature Simulation of Off-Current in Amorphous Silicon Thin-Film Transistors Jaeho Lee, Seunghyun Jang, Hyungcheol Shin (Seoul National University, Korea) Off-current was predicted for temperature variation by simulation of amorphous silicon thin-film transistors (a-Si TFTs) including trap-assisted tunneling (TAT) and band-to-band tunneling (BBT). By analyzing DOS and temperature variation of tunneling effects, off-current was investigated. 28. Investigation and Simulation of Capacitance – voltage Characteristics in Amorphous Silicon Thin Film Transistors Seunghyun Jang, Jaeho Lee, Hyungcheol Shin (Seoul National University, Korea) Capacitance of amorphous silicon thin film transistors was investigated. We verified origins of capacitance – voltage characteristics geometrically. In addition to that, the two dimensional TCAD simulation was performed considering the investigated capacitance. 29. Comparative Study of Analog Performance of Multiple Fin Tri-gate FinFETs KwangWon Lee, SeokSoon Noh, NaHyun Kim, Kee-won Kwon, SoYoung Kim (SungKyunKwan University, Korea) In this paper, the analog performance of the 21nm FinFET devices with different number of fins having same effective width and dc current has been studied using 3D device simulator. We reveal that the best way to maximize the analog performance is to minimize the number of fins which determines the amount of fringing capacitance in multiple fin FinFETs. 30. QoS-aware Traffic Generator for Pre-Evaluation of Multimedia SoCs KeeBeom Kim, Yong Ho Song (Hanyang University, Korea) In this paper, we present the technique of modeling and doing QoS preevaluation about operations of each IP in multimedia SoCs. By using this technique, we can emulate the behavior of individual operations and estimate the performance of communication traffic about QoS support used in multimedia SoCs. Simulation results show that this approach is also effective in evaluating QoS. 31. Measurement-based Load Modeling for Electric Power Systems: A Comparison Study of Methods for Estimating ZIP Parameters of the Model Kyungsung An, Jaeyeong Yoo, Kyeon Hur (Yonsei University, Korea), Santos Kihwele (University of Dar es Salaam, Tanzania) This paper presents a comparison study of the Least-squared and Kalman filter methods for estimating ZIP-Load model frequently used in electric power system stability studies. Underlying ideas for characterizing and modeling electric

loads and methods for extracting parameters of the model are investigated. Advantages and disadvantages of two techniques are evaluated and a useful guide for performing online power system stability is suggested. TA2: Power Electronics and Circuits Thursday, Feb. 2, 2012, 10:40-11:55 Hambaek 1

Chair: Jung-Wook Park (Yonsei University, Korea) 1. Prototype of a Fludics-based Energy Harvesting System Arhatha Bramhanand, Hanseup Kim (University of Utah, USA), Youngchul Bae (Chonnam National University, Korea), Min-Soo Kang (Korea Evaluation Institute of Industrial Technology, Korea) We report the initial prototype of a fluidic-based energy harvesting system that can be utilized for various applications for independent sensor node. The prototype improved the previously-reported [1] proof-ofthe- concept schematic with integrated energy rectifying circuits resulting in peak power output of 4.25mW under input pressure of 517kPa at a frequency of 7Hz. The resultant power density is 744.5μW/cm3. 2. Control Strategies to Improve Protection Capability of DFIGs During Grid Disturbances Santos Kihwele (University of Dar es Salaam, Tanzania), Kyungsung An, Kyeon Hur (Yonsei University, Korea) This paper presents useful control strategies to improve protection capability of DFIG system during grid disturbances. It focuses on the DFIG wind turbine operation during transient state and elaborate the analysis on how the peak rotor transient current, dc-link over voltage and the generator speed oscillation due to electromagnetic torque oscillations can be controlled using the active crowbar protection circuit. 3. Smart Grid Focused Joint Time-Frequency Health Assessment for High Temperature Superconducting Cables David Coats, Qiu Deng, Yong-June Shin (University of South Carolina, USA) Towards a new standard of smart grid active condition based maintenance strategies, joint time-frequency domain reflectometry is proposed for monitoring the health of high temperature super- conducting (HTS) cable. Conditions of localized impedance fluctuation due to coolant leak have been simulated with the reflectometry assessment properly detecting minute changes in cable impedance and indicating location and severity of faulted segments.

26

4. A Novel Compact Ramp-based Soft-start Circuit for VDC Regulator Young-il Kim, Jung Hoon Ham, Sang-Sun Lee (Hanyang University, Korea) A novel compact integrated soft-start circuit for voltage down converter (VDC) regulators is proposed. A soft-start strategy based on a linearly ramped-up reference voltage is adopted to prevent massive inrush currents through the power device during the start-up phase. The presented method of soft start is realized by a compact on-chip circuits, that requires no external components and has minimal transistor. Also, there is "done" signal terminal to monitor the state of start-up phase or steady-state for overall power management. The proposed soft-start circuit is implemented in a 0.11-μm CMOS technology. 5. A Startup Circuit for Boost Converter with Low Source Voltage Z. C. Sun, K. W. R. Chew, H. Tang, L. Siek (Nanyang Technological University, Singapore) This paper presents a fast startup circuit for boost DC-DC converters with source voltage as low as 0.9V. The startup process can be finished within 100μs to achieve 2.5V output when connecting to a 100 Ohm load. At the same time, dual duty ratios are used to prevent the inductor current from overshooting. The circuit is designed using Global Foundries 0.18μm process, and its performance has been verified by Cadence simulation. TB2: Control and Robot Systems Thursday, Feb. 2, 2012, 10:40-11:55 Hambaek 2

Chair: Dongseog Han (Kyungpook National University,

Korea) 1. Course and Depth Control of Autonomous Underwater Vehicle Chul Hyun, Dong-Joon Lee (LIG Nex1, Korea) In this paper, course and depth controller design for Autonomous Underwater Vehicle (AUV) and its simulated performance test results are presented. Control system design is done using the PID control scheme based on a mathematical model of the AUV. Details of system implementation are given and the results of simulations with the prototype vehicle model are discussed. The simulation results show the applicability of the designed controller under sensor noise and external disturbance conditions. 2. A Real Time Deadlock-Free Routing Bidirectional Automated Guided Vehicle System Modeling and Simulator Based on Multi-agent Jinmyung Kim, Mignon Park (Yonsei University, Korea), Chang-Ho Hyun (Kongju National University, Korea) Developing efficient algorithms for AGVs routing on these problems have become an important research topic and Deadlock resolution is a particularly important issue in

Bidirectional AGV System. In this paper, a real time deadlock-free routing bidirectional AGV system model is proposed. We aim to find the shortest time routes, while both deadlock and blocking in AGV systems are avoided. The proposed multi- strategy based approach is compared in a simulation. 3. Remote Control of Mobile Robot Using Tactile Sensor Yong-Ho Kim, Soo-Hyeok Kang, Dong-Hoi Kim, Dong-Han Kim (Kyung Hee University, Korea), Ki-Bang Yun (Incheon University, Korea) This paper proposed a control interface for mobile robot using tactile sensor. Capacitive touch panel with a size of 5-inch is used as input device. Using touch panel provides more intuitive interface than other input devices such as keyboard, mouse, joystick and Kinect. Two microprocessors which are components of proposed interface generate touched information based on direction and velocity generation algorithm to drive mobile robot. In the experiment, the mobile robot drives its two wheels depending on touch input. 4. Robust Tracking Control based on Lyapunov Redesign for Wheeled Mobile Robots with Skidding and Slipping Eun-Ju Hwang, Hyo-Seok Kang, Mignon Park (Yonsei University, Korea), Chang-Ho Hyun (Kongju National University, Korea) This paper proposes the robust tracking controller for the wheeled mobile robots(WMRs) with skidding and slipping. A robust controller is synthesized using the Lyapunov redesign technique, which forces the error dynamics to stabilize to the reference trajectories. We design an additional feedback control such that the overall control stabilizes the actual system in the presence of the uncertainty and perturbation with the knowledge of the Lyapunov function. 5. SIRMs Connected Fuzzy Inference Model with Fuzzy Weights Hirosato Seki, Tomoharu Nakashima (Osaka Prefecture University, Japan) This paper discusses the generalization of a SIRMs (Single-Input Rule Modules) model. A SIRMs model consists of a number of groups of simple fuzzy if-then rules with only a single attribute in the antecedent part. The final outputs of conventional SIRMs model are obtained by summarizing product of the weight and inference result from a rule module. In the SIRMs model of the paper, we propose a SIRMs model with fuzzy weights where a fuzzy sets are used in the weights. Moreover, this paper shows that the inference results of the proposed SIRMs model is obtained as fuzzy sets.

27

TC2: Signal Processing Thursday, Feb. 2, 2012, 10:40-11:55 Hambaek 3

Chair: Ki-Ryong Kwon (Pukyong University, Korea) 1. Design and Implementation of Digital-down-converter for Low Power, Small Size Applications Huirae Cho, Hae-Yong Yang, In-Ho Hwang (Electronics and Telecommunications Research Institute, Korea) This paper presents a design of Digital-Down-Converter (DDC) based on band-pass sampling scheme. The designed DDC has simple architecture applicable for a low power and small sized digital intermediate frequency (IF) receiver. We first explain the frequency plan in detail and then suggest the field-programmable-gate-arrays (FPGAs) implementation result. The implementation result shows that the designed DDC requires small hardware resources and low consumption power. It is suitable for a various low power and small size applications. 2. Object and Face Detection Using H.264/AVC Information Sunwoong Kim, Kyudong Kim, Hyuk-Jae Lee (Seoul National University, Korea) This paper presents a novel object detection algorithm using H.264/AVC information and a face detection algorithm which reduces the amount of computational complexity. The proposed object detection algorithm uses less hardware resource, but attains a similar detection rate of background subtraction. The proposed face detection performs the original Viola and Jones face detector only in the detected object range. As a result, the number of sub-windows is reduced to 547 for VGA size videos. 3. Tomographic Reconstruction of Terahertz Time-domain Spectroscopy Chan Nam-Gung, Hye-Jin Hong, Sang-Heum Cho, Chang-Beom Ahn (Kwangwoon University, Korea) Fast reflection-type terahertz tomography is obtained. Different velocities of the terahertz ray in a free space and in a sample are compensated for reconstructing transverse planes inside of the sample. Some experimental results with the velocity compensation are demonstrated. 4. Car Detection and Recognition with Haar-like Features and PCA Sunwook Kim, Tan Zi Han, Hyo-Jun Lee, Hyuk-Jae Lee (Seoul National University, Korea) In this paper, Haar-like Features with the Adaboost classifier is used for car detection. In addition, the type of the detected car is recognized by PCA (Principle Components Analysis). The car detection rate of 88% is achieved with 4,684 positive and 15,875 negative training samples. 6 types of car are recognized with 83% of accuracy.

5. Geometric Properties of 3D Data Represented by DoSurface Hee-Dong Kim, Sung Soo Hwang, Seong Dae Kim (KAIST, Korea) In the DoSurface(Depth on Surface), the depth information of 3D world is represented by a set of segments based on a particular surface. Each segment belongs to a location on the surface. The DoSurface is quite similar to the well-known run-length representation of binary images. As the geometric features of 2D object can be computed very easily by using the run-length representation, those of 3D object can be computed in a very similar way. This paper presents an efficient method for calculating the geometric properties of 3D objects represented by DoSurface. TD2: Digital Image Processing and Graphics Thursday, Feb. 2, 2012, 10:40-11:55 Taebaek 1

Chair: Mitsunori Makino (Chuo University, Japan) 1. Accurate Foreground Extraction Using Hierarchical Background Subtraction Jisung Yoo, Sung-Soo Hwang, Jong-Gook Ko, Seong-Dae Kim (KAIST, Korea) In this paper, we propose an accurate foreground extraction algorithm using hierarchical back-ground subtraction. We apply three different background subtraction methods to 3-level image pyramid. At the top image, spatial correlation-based background subtraction is applied and foreground candidates are extracted. Edge-weighted background subtraction is then applied to the foreground candidates in the middle image to prevent misclassifying a foreground pixel which has similar intensity with background. Finally, at the bottom image, color correlation-based background subtraction. 2. Real-time 3D Face Modeling for 2D-to-3D Face Conversion in 3D-TV Jaeik Jo, Jaihie Kim (Yonsei University, Korea), Kang Ryoung Park (Dongguk University, Korea) The previous 2D-to-3D conversion methods, which convert 2D video images into 3D contents, deal with 2D-to-3D conversion for full screen. However these methods have a problem for an inaccurate 3D effect in face region. In this paper, we propose a 2D-to-3D face conversion method which converts 2D face images into 3D face images. When the proposed method is applied to previous 2D-to-3D conversion method, it shows more accurate 3D effect in face region. 3. Fuzzy Anisotropic Diffusion and Its Application to Micro-crack Detection in Polycrystalline Solar Wafers JinSeok KO, JaeYeol RHEEM (Korea University, Korea) In this paper, we propose a fuzzy anisotropic diffusion for micro-crack detection in heterogeneously textured surface of

28

polycrystalline solar wafers. The conventional algorithm can’t fully detect diagonal micro-cracks. In order to overcome this, we use the gradient of north, south, east, and west directions as well as extended directions to the input variables of fuzzy inference engine and the fuzzy gradient of the micro-crack to the output variable of fuzzy inference engine. The proposed algorithm shows superior efficiency in detecting the diagonal micro-cracks. 4. Fast Stereo Matching using Multiple Overlaped Search Ranges Jun Hoe Heo, Chan Oh Park, Dong Hun Lee, Jun Dong Cho (Sungkyunkwan University, Korea) Disparity map is an image showing the difference between pixels screened with Stereo-Camera. Many algorithms to acquire disparity map cannot find disparity map in practical time despite its accuracy. This paper suggests an efficient algorithm calculating disparity map by seeking for value of search range through histogram on each section which is divided in order to seek for disparity map with high accuracy. Our method requires less amount of processing time than the one of established disparity map by using search ranges sparsely. Also, by seeking for disparity map through each overlapped section our method attests to a fact that it can accurately find part which is not matched right way. 5. M-matrix for Compressive Sensing Hong Jiang, Raziel Haimi-Cohen, Gang Huang, Paul Wilford (Bell Labs, Alcatel-Lucent, USA) We propose a sensing matrix for use in compressive sensing which is a circulant matrix formed from a maximum length sequence. Such a matrix has similar properties to a random Bernoulli matrix, but it is much easier to generate and implement. TE2: Computer Systems and Applications Thursday, Feb. 2, 2012, 10:40-11:55 Taebaek 2

Chair: Jung Ho Ahn (Seoul National University, Korea) 1. Integrated Data Searching Application for Disaster Victims Qurrotul Aini, Fitri Mintarsih, Aditya Hadiwijaya (Syarif Hidayatullah State Islamic University Jakarta, Indonesia) Aceh Tsunami in 2004 was leaving deep scars. Thousands peoples missing, lost their families and some of them met again after many months even years. Refer to UNICEF data there were five thousand missing people separated from their families. After the year 2009 National Disaster Management Agency (BPNB) stipulated any organization that has data of disaster victims must be sent to BPNB. Data was spread every where and has not been collected into one database; therefore searching victim’s data was become ineffective. Based on this problem, researchers proposed an integrated application for data searching and input of disaster victims from mobile device and computer through internet. The researchers developed the application with Incremental

Process Model (IPM), which consists of five stages: communication, planning, modeling, construction, and deployment. 2. WERT Technique in Requirements Elicitation for Web Applications Zaiyana Mohamed Hussain, Putra Sumari (Universiti Sains Malaysia, Malaysia) Web application developers face problem whenever they gather requirements from users. Most of the developers use requirements elicitation techniques such as interviews, surveys but at the end of the day when developers develop application, the requirements are not met. The main goal of this study is to overcome the problem of requirement elicitation technique for web application using Web Elicit Requirement Tool for developers and users. This technique will improve the requirement elicitation process and help developers and users to clearly define their requirements in web based application. We also anticipate this technique will decrease the time spent to develop a web application by using WERT technique. 3. Automatic Test Case Generation for Network Servers Seungbeom Kim (Stanford University, USA) KLEE is a symbolic execution tool that has been successfully used to test many programs, achieving high coverage and finding many bugs on a diverse set of programs. However, its use had generally been limited to short-lived programs operating within the bounds of a single host. We extend KLEE by adding a networking runtime model to test network server programs. We also introduce the idea of compact states to alleviate a scalability problem of KLEE. 4. A Context-aware Smart Alarm Application on Smartphones Sang-Bok Shin, Sang-Heon Lee, Min-Ki Choi, Taehun Kim, S. Hyun (Korea Advanced Institute of Science and Technology, Korea) With ever-developing smartphone sensors, a lot of efforts are paid to develop smart app services based on inference techniques by using the user's actions as contexts. In this paper, we introduce a context-aware smart alarming app service using smartphone sensors that capture various states of the user as the contexts. We show how a context-aware service could possibly be implemented on smartphone as our key contribution. 5. Performance Evaluation of Java and Native Codes for High-Performance Android Application Development Jae Kyu Lee, Won Yong Yang, Jong Yeol Lee (Jeonbuk National University, Korea) In this paper, we proposed programming guidelines for an effective way to improve performance in Android applications. We have programmed Android applications in Java and Native C, and compared the performance. The

29

applications are composed of five categories such as JNI(Java Native Interface) delay, Integer, Floating-point, Memory access and String processing. The performance is compared by using an application which we have designed. The application contains a profiler and it also measures CPU usage during the execution of algorithms. Finally, we propose a more efficient way to program Android applications by analyzing the results. TF2: Communication Systems and Networks Thursday, Feb. 2, 2012, 10:40-11:55 Taebaek 3

Chair: Cheon Won Choi (Dankook University, Korea) 1. Efficient Distributed Fusion Filtering Algorithms for Multiple Time Delayed Systems Il Young Song, Du Yong Kim, Ha Ryong Song, Ju Hong Yoon, Seung Hwan Bae (Gwangju Institute of Science and Technology, Korea), Vladimir Shin (Gyeonsang National University, Korea) This paper is concerned with two computational effective multi sensor fusion filtering algorithms for discrete-time linear uncertain systems with state and observation time delays. We demonstrate the low computational complexities of the proposed fusion filtering algorithm and how the proposed algorithm robust against dynamic model uncertainties comparing with Kalman filter with time delays. 2. Enhancing the Accuracy of Multiple Network Alignment through Probabilistic Consistency Transformation Sayed Mohammad Ebrahim Sahraeian, Byung-Jun Yoon (Texas A&M University, USA) In this paper, we propose a probabilistic network alignment approach that maximizes the expected accuracy of the alignment. To this aim, we define a set of correspondence scores between each pair-nodes of two networks using semi-Markov random walk. To increase the consistency of the alignment we then update these scores by incorporating the information form other networks. We employ the transformed scores into a greedy alignment process. Experiments reveal that proposed approach can enhance the alignment accuracy. 3. Bipolar Single-channel Network of Data Transmission with Switching of Messages Nurulla Gulturayev, Alevtina Muradova (Tashkent University Of Information Technologies, Uzbekistan) In given article the bipolar single-channel network of data transmission with switching of messages of type | М| 1 | r∞| d1| in which two basic casual processes proceed: the process of expectation characterized by casual time tw and the process of service characterized by casual time tc is considered.

4. Prospects of Developing Investment Policy in Information and Communication Spheres Bobomurodov Hurshid Mahmudovich, Eshonhodjaev Asror Aslanovich (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues developing investment policy in information and communication and telecommunication spheres which improves national economy, socio-economic system, education, science and life conditions of people. We will go through the fulfilled steps, investments and foreign investments to develop this field. The purpose of the article is to emphasize all the efforts devoted, and all the activities and projects managed to develop and improve the concerning sphere. 5. Power Efficient TDMA-MAC Design for NG-PON Peng XU, Guorong HU (Chinese Academy of Sciences, China), Xun ZHANG, Frédric AMIEL (Institute Supérieur d’Electronique de Paris, France) The emerging Next-Generation PON (NG-PON) will be the main technology for FTTH market. While the data rate of NG-PON will reach 100Gbps, the power consumption of the transceiver SOC will be huge. The low power design is very critical for the NG-PON deployment. Our works indicate and illustrate the low power design and implementation for the prototype of the TDMA MAC design for the NG-PON. Our design saved 62.4% dynamic power dissipation in deep-sleep mode. Poster 2: Communication Systems and Networks Control and Robot Systems Thursday, Feb. 2, 2012, 10:40-11:55 Lobby, 5F

Chair: Youngshik Moon (Hanyang University, Korea) 1. Analysis of LT Codes with Optimized Degree Distribution Muhammad Asim, GoangSeog Choi (Chosun University, Korea) LT codes are the practical realization of the digital fountain codes. The performances of the LT codes are associated with degree distribution. A well designed degree distribution can enhance the performance of the LT codes to many folds. In this paper, we use the analysis of the release probability function for the LT process and then propose an optimized degree distribution which is based on the parabolic distribution. The simulation results demonstrate the significance of the proposed scheme1. 2. Performance Evaluation of IEEE 802.11e Media Access Delay Based on Packet Size Kyungsik Min, Minchae Jung, Youngrok Jang, Sooyong Choi (Yonsei University, Korea) In this paper, we introduce the optimal packet size minimizing media access delay for IEEE 802.11e WLAN.

30

We define the modified media access delay as the summation of the conventional media access delay and the delay caused by queue overflow. We evaluate the modified media access delay of IEEE 802.11e with respect to the packet size using OPNET 17.1. Simulation results show that the modified media access delay is minimized on specific packet size. 3. Throughput Effects of the LTE UL due to Digital TV Broadcasting in Japan Ho-Kyung Son, Joo-Hwan Lee (Electronics and Telecommunications Research Institute, Korea) In this paper, we have analyzed the interference effect of LTE service in Korea by Japan’s digital terrestrial TV broadcasting service using 700MHz frequency band. We focus on the uplink throughput reduction of the LTE system and the system level Monte Carlo simulation method is introduced to consider the real environment. We draw the interference signal level for a 5% throughput loss of victim system. 4. Resource Allocation for OFDMA Relay Networks with Inter-Cell Interference Coordination Junho Eun, Jae Hong Lee (Seoul National University, Korea) In this paper, a resource allocation algorithm is proposed for OFDMA relay networks with inter-cell interference coordination. Simulation results show the effectiveness of the proposed algorithm. 5. Quality Assurance Disciplines for the Satellite Integration Hyungwan KIM, Jungsu CHOI, Jongseok PARK (Korea Aerospace Research Institute, Korea) This document is to present the representative quality assurance disciplines for the satellite integration. Every satellite development program has own quality assurance plan. It includes the organization, the basic quality principles, and quality assurance disciplines. Most quality assurance disciplines are specified to the program. This document is based on the integration of COMS(Communication, Ocean, and Meteorological Satellite). It shows the quality control of integration activities and anomalies management. 6. Packet Data Transmission of ECG Signals using Visible Light Communication Xiao-Wei Ng, Yew-Kiat Cheong, Wan-Young Chung (Pukyong National University, Korea) Visible Light Communication (VLC) is a novel optical communications technology using white beam LED. This paper describes the transmission protocol used to send and receive ECG signals over a wireless VLC link. The optical link is realized using high brightness LED at the transmitter and a high speed PIN photodetector at the receiver. ECG signals were captured via wearable sensor device then modulated onto the visible light beam using on-off keying method.

7. Performance Comparison of 6to4, 6rd, and ISATAP Tunneling Methods on the Real Testbed Jong-Tak Park, Se-Joon Yoon, Dae-In Choi, Hyun K. Kahng (Korea University, Korea) With the recent depletion of IPv4 addresses, the IPv4 (32 bits) address system will have to be replaced by the IPv6 (128 bits) address system. The existing IPv4 and IPv6 will coexist for a specific period. Therefore, the IPv6 transition mechanism is required. Of the IPv6 transition mechanism, it is expected that the tunneling method can be applied to the IPv6 transition in the early stage, from the cases of foreign countries. In this study, a Linux-based testbed was designed, while 6to4, ISATAP, and 6rd tunneling methods were applied to it to measure the performance in the UDP, TCP. The test results showed that the 6rd tunneling method was the most suitable in the TCP and UDP network. 8. Two-Dimensional Binary Search on Levels Using Bloom Filter for Packet Classification

Youngju Choe, Hyesook Lim (Ewha Womans University, Korea) As one of the most challenging tasks in designing the Internet routers, packet classification is required to achieve wire-speed processing for every incoming packet. Packet classification algorithm which applies binary search on trie levels to the area-based quad-trie is an efficient algorithm. However, it has a problem of unnecessary access to a hash table, even when there is no node in the corresponding level of the trie. In order to avoid the unnecessary off-chip memory access, we proposed an algorithm using Bloom filters along with the binary search on levels to multiple disjoint tries. For ACL sets with about 1000, 5000, and 10000 rules, performance evaluation result shows that the search performance is improved by 21 to 33 percent by adding Bloom filters. 9. Networking Performance Evaluation for Overtaking Assistance System Service Based on Wireless Access in Vehicular Environment Hyo-Un Kim, Hyun-Soo Seo, Jin-Su Jung, Sang-Sun Lee (Hanyang University, Korea) Due to the development of communication technologies and devices, various vehicle services have been provided. Wireless Access in Vehicular Environment (WAVE) based on IEEE 802.11p has been standardizing for vehicular communication standard. National Highway Traffic Safety Administration (NHTSA) of U.S. Department of Transportation is conducting VSC-A project for safety service using V2V communication. In particular, when a slowing vehicle tries to overtake a preceding vehicle on rurar road with 2 lanes, Do Not Pass Warning (DNPW) service provides drivers with assistance. This paper presents a modeling and networking performance evaluation for DNPW service. In conclusion, we proposed analysis results and consideration elements during overtaking activity in V2V communication.

31

10. MIMO Schemes Using Block Turbo Codes Pingping Shang, Sooyoung Kim (Chonbuk National University, Korea) In this paper, we propose an efficient MIMO scheme using block turbo codes. In the proposed scheme, extrinsic information generated during the iterative decoding process is properly updated by accounting the noise variance change during the MIMO detection process, and utilized it exterior of the decoder. From the simulation results investigated in this paper, the proposed scheme shows greater performance improvement in lower bit error rate regions. 11. A Novel Relay Selection and Transmission Scheme Using Particle Swarm Optimization for Cooperative Wireless Communications Kwangyul Kim, Sungcheol Yoo, Yoan Shin (Soongsil University, Korea) In a cooperative wireless communication system, PA (Power Allocation) and RS (Relay Selection) are important issues for improving the performance of the system. Some papers analyze full CSI (Channel State Information) for obtaining optimal relay selection. However, this makes the system increasingly complex and presents a practical problem. Thus, we are proposing a novel scheme for RS in relay-based cooperative wireless communications based on partial CSI and PSO (Particle Swarm Optimization) algorithms to solve the optimization problem with reduced system complexity as well as optimized performance. 12. An Intuitive Direction Estimation Antenna (iDEA) Jong-Kyu Kim, Huirae Cho, Jin-Gak Jang, In-Ho Hwang (ETRI, Korea) This paper presents the design and fabrication results on an intuitive direction estimation antenna (iDEA). The principle method for direction estimation is based on a single antenna power measurement [1]. The concept and configuration of iDEA is briefly described. Some experimental results and discussions are also given. 13. Weighted Sum-product Algorithm with Improved Performance for Decoding of LDPC Codes Yongmin Jung, Jaeseok Kim (Yonsei University, Korea) This paper proposes a Weighted Sum-Product Algorithm (WSPA) with improved performance for decoding of Low-Density Parity-Check (LDPC) codes. The proposed WSPA improves the reliability of soft information by assigning weights to the soft information of highly reliable variable nodes. The weighted soft information can increase the reliability of other variable nodes by providing more reliable extrinsic information to the variable nodes that share the check node. Simulation results show that the proposed WSPA improves the bit error correction performance compared to a conventional SPA.

14. On the Feasibility of a Overlay Cellular System for Future Military Networks Dongkyu Kim, Hano Wang, Daesik Hong (Yonsei University, Korea) Due to the moving nature of military communication units, there should be overlaid regions where a conventional macro-cell and the moving military units represented by microcell use the same frequency band. Therefore, co-channel interference (CCI) might result in severe capacity degradation of the MWiMAX system. For a performance metric to evaluate the overlay M-WiMAX system, we define exclusion region where the frequency reuse between the macro-cell and micro-cell is prohibited because the sum capacity of the macro-cell and the micro-cell is less than the capacity of only the macro-cell due to increase in CCI caused by the micro-cell. In our result, it is shown that the exclusion region can be reduced up to 84.6% by utilizing sectorization antenna and the FFR techniques. 15. Interference Cancellation for Repeaters Based on DCD-RLS Algorithm Jangseob Kim, Hyuk Lee, Yonghee Han, Jungwoo Lee (Seoul National University, Korea) Unwanted feedback signal from the transmit antenna to the receiving antenna of a intermediate relay or repeater are created by the radio echoes from the environmental scatters and path isolation factors. These radio echoes create interference not only in the incoming signal from the base station, but also cause instability in the repeater. To eliminate these problems, we install interference cancellation systems between the propagation paths. The main part of interference cancellation system is its adaptive cancellation algorithm. In this paper, we implement an dichotomous coordinate decent RLS based adaptive interference cancellation algorithm and confirmed its cancelling performance 16. Multiuser Detection for Large-Scale Multiple Antenna Systems with Low User Activity: An Application of Compressed Sensing Junho Lee, Seung Hwan Lee (University of Science and Technology, Korea) In multiple-input multiple-output (MIMO) cellular networks with aggressive frequency reuse, it is assumed that there are large-scale MIMO systems with hundreds of low-power antennas and users with a low activity factor. In those environments, we consider multiuser detection (MUD) techniques which first cancel out the interference induced by adjacent cells and then recover the desired users’ information by embracing the sparse user activity. It is shown that exploiting the common user activity across multiple symbols can be considered to improve the performance of sparsity-aware MUD.

32

17. Group Based Mobility Management of MTC Devices in the LTE System Hee-Tae Roh, Jang-Won Lee (Yonsei University, Korea) In machine-type communications (MTC), since there are a large number of devices, the signaling congestion is an important issue. In this paper, we try to reduce the signaling overhead, which is generated by MTC devices for the mobility management. It is possible that multiple MTC devices have the same mobility. For example, the MTC devices which are attached to a vehicle or loaded in a container have the same mobility. In this paper, we propose a method of group based mobility management for MTC devices, which have the same mobility, in order to reduce the signaling overhead for the tracking area update procedure in the LTE system. 18. Development of LED Composite Controller based on Wireless Network Sung-Il Hong, Chi-Gook In, Ji-Chul Park, Dal-Hwan Yoon, Chi-Ho Lin (Semyung University, Korea) LED convergence technologies are composed of technology (NT), information technology (IT) and application physics based LED. These technologies are next technologies as well LED application equipment’s due to as LCD driver, back light of car, light of indoor and outdoor. Recently, convergence of LED, sensor and IT is applied for energy management system of indoor and outdoor LED light network. 19. The IPv6 Transition Technology of Korea Se Joon Yoon, Min Su Kim, Dae In Choi, Hyun K. Kahng (Korea University, Korea) The IANA ended the assignment of the IPv4 address on February 3, 2011. Accordingly, no more IPv4 address can be assigned to the new Internet business from 2012 onwards. The reserved IPv4 addresses will be used for new projects (e.g., U-Health, sensor network, and smart grid) . It will be depleted in 2013. Due to the depletion of IPv4 addresses, the IPv6 address was chosen as an alternative to assign a nearly infinite number of addresses. Accordingly, the transition to IPv6 is under way. Japan, EU, and the US started the transition to IPv6 earlier, and they are providing IPv6 service. The native IPv6 has not yet been used, however, and partial services are provided via transition technology. In Korea, however, the service for IPv6 application does not exist, except for the research networks (e.g., KREONET and 6NGIX). In this study, the technical plan was searched to ensure the successful IPv6 service in Korea via the examination and analysis of major transition technologies worldwide. 20. Establishment of a Smart Home System Using Data Architecture Min-Su Kim, Dae-In Choi, Hyun K. Kahng (Korea University, Korea) With the rapid spread of smart phones and tablet PCs among individual users, the smart home system is also increasingly

drawing much attention. If a controllable home network is organized by connecting diverse devices, the home network can be accessed and easily controlled from the outside. In this study, data architecture (DA) is used to organize a home network, and its potential is verified via a simple test. 21. A Clock Offset Compensation Technique for Improving Indoor Wireless Positioning Precision Erang Lim, Mochan Yang, Woncheol Lee, Yoan Shin (Soongsil University, Korea) Indoor wireless positioning system uses ranging information of readers in order to precisely estimate the location. To estimate distance between each readers and tag, the system calculates arrival time with clock of each reader including independent clock offset. We propose in this paper a clock offset compensation method to solve this problem. To verify the performance of the proposed method, we simulated location estimation with random clock offset between - 1,000 and +1,000 part per million (ppm), and then the result shows that the proposed scheme effectively solves the clock offset problem. 22. Network Virtualization and QoS control Scheme for NetFPGA-based OpenFlow Networks Seokhong Min, Jaeyong Lee, Byungchul Kim (Chungnam National University, Korea) To share the OpenFlow switched Future Internet testbed between multiple researchers, as one of soluti-ons, virtualization of the testbed should be implement-ted. In this paper, we proposed network virtualization and QoS control scheme for researchers who want to use the virtualized Future Internet testbed. To evaluate the our proposed scheme, we are using the slice sche-duler on the OpenFlow switch implemented on the hardware accelerated programmable NetFPGA plat-form and tested the bandwidth isolation performance of the UDP flow for each slice on the given testbed. 23. A Connection Recovery Algorithm from Temporal Failure in WSN Doo-Wan Lee, Kyung-Sik Jang (Korea University, Korea) In wireless sensor network (WSN) under the limited energy source, one of the main design goals is recovery from temporal or permanent network failures without affecting sensing operation and network connection with low cost. In this paper, we propose a low-cost connection recovery algorithm which recovers the network connections from temporal failure based on lookup-table based replacement policy. The temporally-failed node is replaced by backup-node which is selected on the basis of the priority determined by its power capacity. The quantitative analysis shows the cost-effectiveness of the proposed algorithm and its feasibility for fault-tolerant sensor network .

33

24. The Geographical Locator for LISP Enkhzul Doopalam, Hyun K.Kahng (Korea University, Korea) To address serious issues of current internet a lots of researches are suggesting many proposals and mechanisms. However all of proposals and ideas are different, hints of them demonstrate that key solution of those issues is identifier/locator split. We investigate the drafts of the most familiar proposal as LISP and propose the geographical locator for LISP which is significant for overhead reduction and scalability. We evaluate our proposal using scalable network simulator Qualnet5.0 which shows that our proposal is better than basic LISP. 25. A Novel Frequency Interference Management Scheme Based on Wireless Localization in M2M Communication Environments Ailan Hong, Kwangyul Kim, Shanai Wu, Yoan Shin (Soongsil University, Korea) In an industrial environment, M2M (Machine-to- Machine) communication is an important method for controlling the machines. Especially, WSN (Wireless Sensor Network) is used for sensing the machine condition and communicating to human device. However, frequency interference is occurred in WSN since ZigBee, Bluetooth, and WLAN (Wireless Local Area Network) are using the same ISM (Industrial, Scientific and Medical) band. Therefore, we propose a novel management scheme of frequency interference by using wireless localization. 26. Frequency Estimation using Compressive Sensing Nguyet-Lan Vu, Intaek Kim (Myongji University, Korea) This paper proposes a frequency estimation method based on Compressive Sensing (CS) scheme. The CS allows reconstructing the signal from far less number of measurements necessary than that of the traditional method based on Nyquist rate. Simulation results show that the proposed method is feasible and effective in recovering the frequency components from a part of signal. 27. An Efficient Content Delivery Scheme for Minimizing Server Cost in a Distributed Servers Architecture Jeongyun Kim (ETRI, Korea), Junkyun Choi (KAIST, Korea) As the volume of video content delivered over the Internet is rapidly increasing, local CDN is necessary, storing content in edge servers. To minimize the storage cost, new content delivery scheme is proposed, by combing segment caching and delivery.

28. Home Network Architecture based on P2P Overlay Ho-Jin Park, Jun-Hee Park (Electronics and Telecommunications Research Institute, Korea), Nam Kim (Chungbuk National University, Korea) This paper proposes a home networking architecture which enables autonomous networking and collaboration among various heterogeneous devices in home networks by using P2P technology. The architecture offers a P2P overlay network which supports seamless communication among heterogeneous devices to collaborate with others by hiding heterogeneity of devices and physical network configurations such as firewall, NAT and transmission media. In the model, heterogeneous devices can freely interwork together as if they were in a single network. 29. The Design of a Multi-channel Synchronous and Asynchronous Communication IC for the Smart Grid Seungkyu ock, Oh yang (Cheongju University, Korea) In this paper, the Integrated Circuit (IC) for a multi-channel synchronous and asynchronous communication was designed by using a FPGA and VHDL language. The existing chips for synchronous and asynchronous communication that has been used commercially are composed for one to two channels. The designed IC improved the function and performance of the communication system and reduced costs by designing 8 communication channels with only one IC, and it has the size of transmitter/receiver buffer with synchronous 1024 bytes, asynchronous 256 bytes respectively and as a consequence high speed communication became possible. To detect errors in communications, the CRC-ITU-T logic and digital filters and check-sum logic and channel MUX logic was designed with hardware logic so that malfunctions can be prevented and errors can be detected more easily. And the I/O port regarding each communication channel can be used flexibly and consequently the reliability of the system was improved. 30. Direct Teaching Trajectory Modification using Curvature and Velocity Profile Taeyong Choi, Chanhun Park, Jinho Kyung (Korea Institute of Machinery and Materials, Korea) Direct teaching in the industrial robot are the novel technique to teach manipulator with easy usage. To use teaching data, post processing to correct teaching trajectory are required because of some noise. Here, the intuitive feature point recognition method to rebuild teaching data with curvature information is proposed. 31. Joint TOA/DOA using Matrix Pencil Algorithm for Mobile Robot Localization Lan Anh Trinh, Dong Han Kim, Sungyoung Lee (Kyung Hee Universtity, Korea) Localization so far plays an important role in the development of mobile robot. In order to locate the position of a robot, both the coordinates and the heading angle of a robot are usually necessary. In this paper, we introduce an

34

efficient geo-location system for mobile robot, where the localization of a mobile robot is obtained by the direction of arrival (DOA) and time of arrival (TOA) of the radio signal. To estimate the heading angle we estimate the direction of arrival of transmitted signal based on the Matrix Pencil algorithm. Time of arrival of the radio signal is estimated for computing the distance between the mobile robot and other robots used as a base station. Based on the distance and the heading angle, we can estimate the mobile robot’s position. To evaluate the performance of the proposed algorithm, we have examined the algorithm with simulations. 32. Contact State Analysis Using FT Sensor in the Square Peg-in Hole Dong Il Park, Chanhun Park, Hyunmin Do, Taeyong Choi, Jin-Ho Kyung (Korea Institute of Machinery & Materials, Korea) Industrial robot manipulators have been used in material handling and assembly in the factory automation. Nowadays, one of the main issues in the robotic automation is high precise automatic assembly instead of human. It is important to establish the proper assembly strategy and to define systematic assembly steps. The robot has to be able to estimate the exact contact state in all the times to assemble and achieve objectives according to the predefined assembly strategy. In the paper, contact states in the square peg-in-hole process are defined and analyzed using FT sensor. Based on the results of contact state estimation, robot can perform the square peg-in hole assembly. 33. A Study of Location Determination Methods Based on Activity Recognition Using Wearable Sensors Min-Gyu Park , Byung-Moo Choi, Jong-Kyun Hong, Sang-Woo Chang, Sang-Sun Lee (Hanyang University, Korea) This paper presents a sensor system consisting of an accelerometer and a single axis gyroscope used for location determination systems with indoor environments. Mathematical and geometric algorithms are recommended for operating the sensor system. Specifically, the sensor board is not perfectly attached to the human body to make the system useful for practical applications. The experimental results for the track model confirm that the tracking trajectories are acceptably matched to the pre-defined track while considering the corridor-form structures. 34. Finite Element Modeling and Material Behavior Analysis of Hand of Robot for Solar-cell Manufacturing Process Yi-Jun Yoo, Dong Il Park, Cheol hoon Park, Hyunmin Do, Jin Ho Kyung (Korea Institute of Machinery and Materials, Korea) For purpose of ideally analyzing mechanical behavior of hand of robot it is required to compare simulation results such as stress and deformation with theoretical values. Especially, in case of robot operated in vacuum environment it is important to predict its displacement and stress to avoid failure of its work. In this paper it is suggested to

successfully make mesh for hand beam through analysis of deformation and stress using Finite Element Method. TA3: Nanomaterials for IT Thursday, Feb. 2, 2012, 15:35-17:20 Hambaek 1

Chair: Yudi Darma (ITB, Indonesia) 1. (Invited Paper/ 15:35-16:05) Metal Oxide Nanowires for Transparent Electronics Applications Guozhen Shen (Huazhong University of Science and Technology, China) Transparent electronics has attracted great research efforts in recent years due to its potential to make significant impact in many areas, such as next generation displays, UV detectors, solar cells, charge-coupled devices (CCDs) and so on. Central to the realization of transparent electronics is the development of high performance fully transparent thin-film transistors (TTFTs). Transparent metal oxide nanowires are one of the best candidates to make fully transparent TFTs. 2. Field Emission Characteristics from Carbon Nanotubes Cheol Jin Lee (Korea University, Korea) Carbon nanotubes (CNTs) have been considered as a good field emission material due to their high aspect ratio, high electrical and thermal conductivity, mechanical strength and chemical endurance. Field emission properties of CNTs reveal much higher emission current and lower turn-on field than those of conventional metal tips or silicon tips.1-3 There are several reports on CNT based field emission applications such as field emission displays, lamps, x-ray sources, high-resolution electron-beam instruments, and microwave amplifiers. Here, we report that field emission properties of CNTs are strongly dependent on the diameter, crystallinity, alignment and a screening effect. 3. Thermal Conductivity of Tapered Micro Glass Tubes in Vacuum Condition T. Tokunaga, I. Byun, P. Ginet, N. Takama, B.J. Kim (The University of Tokyo, Japan), S. Volz (Ecole Centrale Paris, France) An experimental study was conducted to measure the heat transfer characteristics of tapered micro glass tubes both in air and vacuum conditions. The tapered micro glass tubes with different tip angles were fabricated by simple method, which is pulling the glass tube at high temperature. After cooling of glass micro tubes, the heat was conducted by Pt micro heater at the opposite side of the end of glass tubes. The temperature profile on micro glass tube was measured by infrared (IR) thermo microscope.

35

4. Micropatterned Elastomer Nanocomposite for Sensor Applications Chao-Xuan Liu, Jin-Woo Choi (Louisiana State University, USA) This work reports sensor prototypes based on a novel material. Conductive elastomer nanocomposite consisting of poly-dimethylsiloxane and carbon nanotubes is used as the sensing element utilizing its flexibility and piezoresistivity. Uniform dispersion of carbon nanotubes is obtained within the elastomer matrix, and micropatterns of composite are fabricated through screen printing assisted by programmable laser ablation. Under tensile strain or differential pressure, sensor devices display distinct advantages over current capabilities. This sensing format could be valuable for versatile microelectromechanical systems (MEMS). 5. pH Responsive Polyaniline Nanowires and Its Sensitivity on Electrochemical Potentials Edward Song, Jin-Woo Choi (Louisiana State University, USA) Polyaniline (PANi) is one of the widely studied conducting polymers for many sensor applications. Due to its pH dependent conductivity it has the potential to be used as a pH sensor. In this work, we demonstrate a polyaniline-based pH sensor using electrochemically synthesized polyaniline nanowire network between microelectrodes. Experimental results show that PANi-based sensor can detect the pH level of buffer solution. This paper introduces some of the unique electrical properties of PANi and discusses how it can be used in various applications. 6. Design of a Charge Induced Type MEMS Sensor for Particulate Matter Measurement of On Board Diagnostics Keunho Jang, Seounghyun Lee, Kukjin Chun, Kyoungdoug Min (Seoul National University, Korea), Jin-ha Lee, Sera Lim (Hyundai Motors Company, Korea) In this paper, charge induced type MEMS sensor for particulate matter (PM) measurement is presented. To enhance the sensitivity of the sensor, electrode with small 3D structure is proposed by MEMS process. Total volume of device is 3.5mm × 15mm × 0.5mm and volume of the sensing element is 3.5mm × 10mm × 0.5mm. Using DRIE process, the proposed sensor is fabricated on silicon substrate. And p-type silicon wafer with low resistivity of 0.005Ω•cm is used to reduce the loss of signal. In addition, the device is realized by simple process with one photolithography mask. TB3: IT Business & E-Commerce Thursday, Feb. 2, 2012, 15:35-17:05 Hambaek 2

Chair: Seongjoo Lee (Sejong University, Korea) 1. The Role of E-commerce in Marketing Turdiev Farrukh, Toirova Mubina, Yunusova Shakhnoza (Tashkent University of Information Technologies, Uzbekistan)

In this paper, we consider the necessity of ecommerce in marketing, and ways of improving its efficiency. 2. Achievements of Joint Stock Company “Uzbektelecom” During Last Years Ravshanbek Tulyaganov (Tashkent University of Information Technologies, Uzbekistan) Goals that achieved by Joint Stock Company “Uzbektelecom” in 2008-2010 are discussed in this paper. Some information about communication and information technologies is considered. Revenue from additional services and from public is given. Also, some information about export and import volumes is shown. Conclusion considering further development of Joint Stock Company “Uzbektelecom” is formulated. 3. Important Prerequisites for E-commerce Development in Uzbekistan Turdiev Farrukh Olimovich, Toirova Mubina Akhmadjanovna (Tashkent University of Information Technologies, Uzbekistan) Informatization is one of the most important traits of public relationship systems of the advanced capitalist countries. Humanity reached such level of evolution of civilization where information and knowledge play determinative role in every activity of people. Meanwhile, information becomes significant factor of an economic growth in contemporary society. The world is changing dynamically, and so do business and the way we have to make it. That is what the new technologies make us to do, that is what they offer today. 4. ICT as the Factor of Increasing Management Efficiency at the Enterprise Tursunbaev Roman Batirovich (Tashkent University of Information Technologies, Uzbekistan) The following article is about the information and knowledge management in within the company Unicon.uz. This company is multiprofile company which makes it an extremely good object for research. In this kind of companies making good use of information systems plays a huge role. 5. E-government and E-commerce: Success Dependent on Interaction and Mutual Development Vasila Karimova (Tashkent University of Information Technologies, Uzbekistan) This paper analyses the dependency of egovernment development on e-commerce. While both of these are not developed simultaneously we could not create information-oriented society and could not make transition from traditional business to online one. So paper is focused on major ICT development indexes for the development of e-government.

36

6. The Role of Marketing in Increasing Company’s Share in Cellular Market of Uzbekistan Bobomurodov Hurshid, Korchieva Azizakhon (Tashkent University of Information Technologies, Uzbekistan) In this paper the characteristics of Uzbekistan’s cellular market are described, advantages and main aspects of marketing in IT market are considered. Forecast of users number is formulated and offers on the perfection ways of marketing activity are given. TC3: Analog and Digital Circuits Systems Thursday, Feb. 2, 2012, 15:35-17:05 Hambaek 3

Chair: Min-Cheol Hong (Soongsil University, Korea) 1. A Low-Distortion Multi-Path Bandpass ΔΣ Modulator Youngcheol Chae (Delft University of Technology, The Netherlands) This paper presents a low-distortion multi-path bandpass ΔΣ modulator structure. A feed-forward bandpass modulator topology is effectively applied to a low-distortion multi-path ΔΣ modulator. The proposed multi-path ΔΣ modulator structure achieves an improved tonal behavior and is free of the mismatch induced tones. Based on the proposed architecture, a forth-order five-path ΔΣ modulator can achieve a dynamic range of 61dB at 50MHz IF with a signal bandwidth of 4MHz, while dissipating only 2mW. 2. Photodiode Storage Control for Wide Dynamic Range CMOS Image Sensor Jaeha Eom, Bongsub Song, Junan Lee, Jinwook Burm (Sogang University, Korea) A CMOS Image Sensor (CIS) with photodiode storage control is proposed. This technique controls photodiode storage by adjusting Transfer Gate (TG) voltage. Using the proposed technique, A CIS can express the image in high light condition without saturation and achieve a Wide Dynamic Range (WDR) simply without decrease of frame rate and additional memory. It has 11-bit column parallel single-slope ADCs and gain control stage using resistor ladder. 3. Design of a Wave-Pipelined Serializer-Deserializer for High Speed Interfaces Bui Chinh Hien, Seok-Man Kim, Kyoungrok Cho (Chungbuk National University, Korea) In this paper, we propose a wave-pipelined Serializer (SER) and Deserializer (DES), or SERDES in brief, that is totally clock-free. The proposed SERDES employs delay elements (DEs) consisting of inverter chains for timing reference. The simulation of the proposed SERDES in Hynix 180nm process shows 3.9 Gbps throughput and dissipates 1mW. The power consumption of proposed SERDES is 47% lower than that of the conventional SERDES [1].

4. Transient Radiation Test and SPICE Modeling/Analysis for Evaluation of Transient Radiation Effects on the CMOS Devices Seungchan Oh, Namho-Lee (Korea Atomic Energy Research Institute, Korea), Heungho Lee (Chung-Nam University, Korea) This study carried out a SPICE simulation based on a TCAD(technology computer aided design) simulation and experiments of transient radiation effects as a method for analyzing transient radiation effects shown as prompt gamma-ray which is a highenergy ionizing radiation emitted due to nuclear burst being induced to electronic devices. These experiments were carried out using a pulsed 60 MeV LINAC facility in Pohang Accelerator Laboratory(PAL). The result of SPICE simulations has found that the Latchup phenomena could be checked in more than 7.0×1011W/cm2 and the result of the experiments about CMOS devices has found that temporary errors could be generally checked due to photocurrent and the latch-up phenomena occurring in all devices. 5. A Reliable Fast-Locking Word Alignment for High Speed Serial Interfaces Kang-Hyun Jeong, Jong-Min Baek, Jung-Hoon Chun, Kee-Won Kwon (Sungkyunkwan University, Korea) This paper describes a fast-locking word alignment algorithm for 5Gbps serial interfaces. The MSB and LSB of the word shift in the received word is separately calculated using dedicated idle pattern and two types of XOR operators consisting of only 40 gates. The word aligner designed using 0.13　m CMOS technology completes the alignment within a single clock period, consuming only 780µ2 of area. 6. Design of an OTA Based Silicon Neuron Hojong Park, Wonkyeong Park, Hyoseop Song, Jewon Lee, Hanjung Song (Inje University, Korea) This paper presents an OTA based silicon neuron with negative resistor. The proposed silicon neuron consists of a coupled oscillator, a negative resistor and a V-I converter for synapse. SPICE circuit analysis using a 0.5 um CMOS process parameters was performed for neuron’s dynamics such as time waveform. And we confirmed that behaviors of the circuit can be controlled according to the input current. TD3: Digital Image Processing and Graphics Thursday, Feb. 2, 2012, 15:35-17:05 Taebaek 1

Chair: Myoung-Jin Kim (Soongsil University, Korea) 1. Calibration of a Hybrid Camera System and Construction of 3D Image Hahyoung Jung, Taeyeon Kim, Joon Lyou (ChungNam National University, Korea) For color and depth cameras, intrinsic and extrinsic parameters are first extracted through experiments, and the hybrid camera system is calibrated so as to match the color

37

and depth images. The relation between depth information and distance is then derived experimentally as a simple linear function, and 3D image is constructed by the coordinate transformation of matched image. 2. A Structure-Enhanced Tone Mapping Algorithm for High Dynamic Range Scenes Junghyeun HWANG, Hisakazu KIKUCHI, Shogo MURAMATSU (Niigata University, Japan), Jaeho SHIN (Dongguk University, Korea) A dynamic range compression algorithm is presented for tone mapping of high dynamic range (HDR) images. The structure of scene objects are enhanced by two devices. The first is the extraction of the visual adaptation levels to reduce the haloing artifacts on rendering. The other is the removal of the surrounding light field for clear rendering of object surfaces. Demonstrative examples are given. 3. Generation and Matching of Fingercodes from Fingerprint Images Donghyun Noh, Jahie Kim (Yonsei University, Korea) Fingerprint image coding has several advantages such as quick matching, non-reversibility, revocability and ease for hardware implementation. However, the performance of fingercode varies according to the types of fingerprint images. In this paper, by using two kinds of methods (filter-bank based method and bitstring method) and several fingerprint data sets, we measure the recognition performance of each case. Experimental results present that the touchless image data set shows lowest equal error rate (EER) are 9.5% and 1% for two methods. By these results, we can see that the touchless fingerprint images are more suitable and have better performance than touch images for fingercode. 4. Vision-Based Hand Gesture Recognition for Human Interface Using a Remote Control System Jahwan Oh, Daehee Kim, Joonki Paik (Chung-Ang University, Korea) We propose a vision-based remote control system that i) detects the hand region using skin color and 　 -transform, and ii) tracks the target hand using continuously adaptive mean shift (CAMShift). The set of recognizable gestures include moving and left/right button clicking. This system is robust to geometric transformations and can be implemented in real-time. 5. Image De-Noising Using Adaptive Directional Wiener Filter in Wavelet Domain Jin Wang, Gwanggil Jeon, Jechang Jeong (Hanyang University, Korea) This paper proposes a novel adaptive directional Wiener filter to determine the signal power while preserving direction information. In our algorithm, nearly arbitrary directions are applied for estimating the signal variance for

image denoising. The number of the directions for image denoising is adaptive according to the homogeneity of the direction. 6. A New Interpolation Method Based on Non-Local Similarity Le Thanh Ha (Vietnam National University, Veitnam), Lei Lei, Dae-Hwan Kim, and Sung-Jea Ko (Korea University, Korea) In this paper we present a novel interpolation method based on the non-local similarity. The upscaling operation tends to remove details in textural parts of the image, which causes blurring effects. In order to overcome this problem, for each patch to be interpolated, we search a non-local region in the smoothed version of original image to find the most similar patch. The detail information can be recovered from high frequency contents of this similar patch in the multiple scales structure. Experimental results show that the proposed method is good at handling the structural or textural parts of the image. TE3: Modeling and Simulations Thursday, Feb. 2, 2012, 15:35-16:35 Taebaek 2

Chair: Kormyshev Valentin (Ural Federal University,

Russia) 1. Analytical Solution of Copper-faced Eddy Current Retarders Considering Reluctance Variation with Coil Current Seongyun Park, Junhwan Jang, Jiseong Jeong, Kyihwan Park (Gwangju Institute of Science and Technology, Korea) A copper-faced eddy current retarder is analyzed considering the magnetic reluctance variation with coil current to fit analysis curves with experimental data. The model considering reluctance variation is used to study the copper thickness effect on the torque-speed characteristics of eddy current retarders. 2. Combustion Stabilization in Liquid Propellant Rocket Motors V. M. Kormyshev, M.A. Safronov (Ural Federal University, Russia) The paper considers the combustion stabilization in liquid rocket engines, described by a system of differential equations with delay. One of the possible construction of a feedback control based on the method of explicit solutions of the generalized Riccati equations.

38

3. Design Consideration for Heterojunction P-Type Tunneling Field-Effect Transistor with Narrow-Bandgap Source Material Seongjae Cho, James S. Harris, Jr. (Stanford University, USA), Hyun Woo Kim, Byung-Gook Park (Seoul National University, Korea) Tunneling field-effect transistors (TFETs) are under wide researches due to its superior switching characteristics and low power consumption. For adopting them into integrated circuits, it is essential to consider design rules for complementary pairs, n-type and p-type TFETs. In this work, an indispensible criterion in designing heterojunction p-type TFET (PTFET) in terms of combining materials with regard to their valence band (VB) offsets. 4. Analysis of Small Scale Dynamic Model for High-speed Maglev Application Ki-Jung Kim, Jong-Boo Han, Hyung-Suk Han, Chang-Hyun Kim (Korea Institute of Machinery and Materials, Korea) A small scale magnetic levitation and propulsion system for high-speed Maglev application is manufactured for functional testing of levitation and propulsion. This system is composed of vehicle, linear synchronous motor (LSM) for propulsion, levitation and guidance electromagnets adopting active control, and guideway. This paper deal with the dynamic simulation of small scale magnetic levitation and propulsion system for maglev vehicle application. TF3: Communication Systems and Networks Thursday, Feb. 2, 2012, 15:35-17:05 Taebaek 3

Chair: Hyesook Lim (Ewha Woman’s University, Korea) 1. Formation Problems of Human Resources in Communication and Information Sphere Kurbaniyazova Sarbinaz (Tashkent University of Information Technologies, Uzbekistan) Problems of human resources` formation in communication and information sphere are considered in this paper. Level of employees` education of Joint Stock Company “Matbuot tarkatuvchi” in 2008-2010 is discussed. Some information about dynamics of employees with high education in the company is shown. Dynamics of women with high education is given. Conclusion considering further development of human resources in whole sphere of communication and information is formulated. 2. Quality Management System: Development Ways in ICT Sphere of Uzbekistan Dilrabo S. Dadayeva, Khayrulla S. Dadayev (Tashkent University of Information Technologies, Uzbekistan) The following article is devoted to consideration of issues of service quality control providing on Uzbekistan ICT sphere, as well as ways of quality of services control evolution are considered.

3. Improved Landmark LRU Scheme for Detection of Elephant Flows Yunki Choi, Jinoo Joung (Sangmyung University, Korea), Jeongyun Kim (ETRI, Korea) We proposed scheme for accurately to detect elephant flow. A method of to identify elephant flow is Landmark LRU cache scheme to improve the usual method of Least Recently Used scheme. This method is compared with LRU scheme, it could elevate detection ratio of elephant flow. However, there is not much difference in certain situation. We proposed a cache update algorithm, to change existing Landmark LRU, to improve the performance of more accuracy to detect elephant flow and maintain efficiency of Landmark LRU. 4. Adding Bloom Filters to a Binary Trie Jung Ah Lee (Alcatel-Lucent, USA), Jungwon Lee, Hyesook Lim (Ewha Womans University, Korea) This paper proposes a new IP address lookup architecture with Bloom filters. The proposed architecture adds three Bloom filters to binary search on trie level algorithm. Compared with the existing single Bloom filter implementation, the proposed architecture provides improved search performance by reducing the false positive rate of a Bloom filter. It is shown that the average search performance for an IP address lookup requires 2-3 accesses to external memory in our proposed scheme. 5. Packet Removal vs. Preservation in Wireless Passive Sensor Networks Supported by ALOHA-based MAC Scheme Phil-Seong Ghang (Alcatel-Lucent, USA), Insoo Jun (Jet Propulsion Laboratory, USA), Heewon Seo, Jin Kyung Park, Jun Ha, Joonmo Kim, Cheon Won Choi (Dankook University, Korea) In this paper, we consider a wireless passive sensor network in which an ALOHA-based MAC scheme supports sensor nodes to deliver packets to a sink node. Intending to satisfy the wish for timely packet delivery in the network, we suggest a buffer management scheme of removing remaining packets. By a simulation method, we then compare the throughput and delay performance of the removal scheme with the one of the preservation scheme, and analyze the effect of the resource contention and the periodic energy constraint. 6. Impact of Packet Replacement in Wireless Passive Sensor Networks Employing ALOHA-based MAC Scheme Phil-Seong Ghang (Alcatel-Lucent, USA), Insoo Jun (Jet Propulsion Laboratory, USA), Heewon Seo, Jin Kyung Park, Jun Ha, Joonmo Kim, Cheon Won Choi (Dankook University, Korea) In this paper, we consider a wireless passive sensor network which employs an ALOHA-based MAC scheme for sensor nodes to deliver packets to a sink node. For the applications longing for a timely collection of the latest information in

39

such a network, we propose a buffer management scheme of replacing an old packet with a new one. By a simulation method, we then compare the replacement scheme with the non-replacement scheme in throughput and delay performance. Also, we analyze the effect of the resource contention and the periodic energy constraint on the performance. Poster 3: Analog and Digital Circuits Systems Computer Systems and Application Circuit and Systems Thursday, Feb. 2, 2012, , 15:35-17:05 Lobby, 5F

Chair: Yong-Seo Koo (Dankook University, Korea) 1. Characterizing Cell-to-Cell Coupling in Flash Memory Jaehyeong No, Jaekyun Moon (KAIST, Korea), Joongseop Yang, Seokjin Joo, Sangchul Lee, Seokhwan Choi, Hyunju Lee (Hynix, Korea), Tong Zhang (RPI, USA) Cell-to-cell coupling is characterized based on input/output data obtained from state-of-the art commercial multi-level cell (MLC) flash memory chips. The method is based on carefully choosing a mask that contains a number of local cells and then taking sample means conditioned on specific local input patterns for the cells captured under the scanning mask. These conditional means provide valuable information based on which coupling between a pair of cells is characterized. 2. Improved High Speed/Low Complexity Memristor-based Content Addressable Memory (MCAM) Cell Mohamed G. Ahmed, Kamran Eshraghian, Kyoung-Rok Cho, Tae-Won Cho (Chungbuk National University, Korea) This paper provides new approach for nonvolatile Memristor-based Content Addressable Memory MCAM cell using memristor with CMOS processing technology in order to get high speed read/write operations within high packing density and low power dissipation. The proposed cell uses only two memristors as a memory cell and CMOS controlling circuitry which uses latching to decrease time required for writing. Moreover, less complexity has been achieved by using the same lines for read and write signals. On the other hand, proposed cell use latching to decrease write time and get nondestructive read operation. As a consequence, the proposed cell provides static power dissipation prevention and no opportunity for losing data. 3. A Low-Power 3-step vernier Time-to-Digital Converter for All-Digital Phase Locked Loop Junghyun Shin, Minsoo Kang, Jinwook Burm (Sogang University, Korea) This paper presents a low-power 3-step vernier time-to-digital converter (TDC) for all-digital phase-locked loop (ADPLL). The proposed TDC uses a 3-step structure with an inverter chain time-quantizer in the 1-stage and two vernier type time-quantizers in the 2,3-stage to improve time

resolution , which results in low phase noise. The developed TDC consumes less power due to reduced delay-cell and flip-flop than 2- step TDC and single-shot pulse generator. This design was implemented in a 0.18-μm CMOS technology. The TDC resolution is 5ps. 4. A Digitally Tunable Capacitance Bank for Antenna Impedance Correction Circuit using 0.35um CMOS SOI Hyunwook Han, Tae Wook Kim (Yonsei University, Korea) A digitally tunable capacitance bank is designed with 0.35um CMOS SOI technology for an adaptive matching network. The adaptive matching network can correct antenna impedance which may be corrupted by Hand-effects of mobile phone. The SOI provides good switch for the 5-bit tunable capacitor bank which provides tuning range from 0.2pF to 2.5pF with 0.5pF step. The quality factor (Q) of the tunable capacitor bank is around 20 over all capacitance values. 5. A Design of the NMOS-based ESD Protection Circuits with a Low Trigger Voltage and High Robustness Using Body-floating Technique Dong-Su Kim, Jin-Woo Jung, Byung-Seok Lee, Yong-Seo Koo (Dankook University, Korea), Bo-Bae Song (Seokyeong University, Korea) In this paper, ESD (Electro-Static Discharge) protection circuits a body-floating NMOS is proposed to provide low trigger voltage and high robustness. The proposed ESD protection circuits is designed in 65nm CMOS technology. The experimental results show that the proposed body-floating NMOS has a low trigger voltage of 4V and higher robustness than conventional GGNMOS(gate-grounded NMOS). 6. Bridgeless Buck-Boost PFC Rectifier with High Efficiency Min-Kwon Yang, Ju-Seung Yoo, Jae-Yeon Choi, Woo-Young Choi (Chonbuk National University, Korea) This paper proposes a bridgeless buck-boost (BBB) power-factor correction (PFC) rectifier for a battery charger in plug-in hybrid electric vehicles (PHEVs). The proposed rectifier can charge the battery packs in PHEVs with high efficiency and high power factor. The proposed rectifier substitutes the full-bridge diode rectifier for a controlled rectifier by using the reverse blocking-insulated gate bipolar transistors (RB-IGBTs) for grid interface. The proposed rectifier has low conduction losses and step-up/down capability for grid charging in PHEVs. A PFC control strategy using a linear peak current mode control is suggested to achieve high power factor. Experimental results based on a 1 kW prototype show that power efficiency of 95 % and almost unity power factor were achieved at 230 Vrms line voltage.

40

7. Bridgeless Half-Bridge AC-DC Converter with Series-Connected Two Transformers Ju-Seung Yoo, Jae-Yeon Choi, Min-Kwon Yang, Woo-Young Choi (Chonbuk National University, Korea) This paper proposes a bridgeless half-bridge AC-DC converter with series-connected two transformers. The proposed converter integrates the bridgeless power factor correction (PFC) circuit with the asymmetrical pulse-width modulated (APWM) half-bridge DC-DC converter. By using series-connected two transformers, the proposed converter provides a low-profile and high power density for AC-DC converters. 8. High Step-Up DC-DC Converter with High-Efficiency for Low-DC Renewable Energy Sources Jae-Yeon Choi, Ju-Seung Yoo, Min-Kwon Yang, Woo-Young Choi (Chonbuk National University, Korea) This paper proposes a high step-up DC-DC converter with a high-efficiency. The proposed converter has the dual active-clamping circuit with parallel-connected two transformers. Compared to the previous active-clamped step-up DC-DC converters, the voltage stresses of the semiconductor devices can be reduced in the proposed converter. The proposed converter has low switching power losses and high power efficiency. The performance of the proposed converter is verified from 350 W (350 V / 1 A) experimental prototype circuit for 50 V photovoltaic module voltage. 9. Sensorless Speed Control of a BLDC Motor via Terminal Voltage Difference Chungil Kim, Taeyeon Kim, Joon Lyou (ChungNam National University, Korea) This paper presents a sensorless speed control method of a brushless DC (BLDC) motor using terminal voltage difference. The zero crossing point (ZCP) of the back EMF (BEMF) difference between two phases corresponds to the commutation instant of a BLDC motor accurately, and it can be detected through the terminal voltage difference. Based on the commutation method above, speed controller of a motor is designed and some experimental results are given to evaluate the devised scheme. 10. A Study on Portable Device Lifetime Improvement Through Connection Status Control of the Battery Jaeho Lim, Kieyoung Park, Seongsoo Lee (Soongsil University, Korea) Recently, as the demand of portable device such as a smart phone, a tablet PC and a portable multimedia player (PMP) has increased, battery lifetime as a key to the use of the portable device along with performance of the portable device becomes the important issue. We research the connection status control of the battery for extending portable device lifetime. According to the battery remaining capacity, battery lifetime for portable device were extended through scheduling for connection method. And we verify alternate discharge method through simulation and analysis its results. Battery lifetime of proposed method compared with the conventional method were increased by 9%.

11. Design of a PFC Circuit Using a OTA Based Multiplier Wonkyeong Park, Jiman Kim, Seunghwan Lee, Hanjung Song, Namtae Kim (Inje University, Korea) This paper presents an integrated circuit implementation of a noble power factor correction (PFC) controller with an OTA based multiplier for LED applications. The proposed circuit consists of the control block for power factor correction, voltage regulator for internal supply power and protection parts. For verification of the proposed circuit, SPICE simulations were performed. The circuit has been fabricated using a 1 um 20 V BCD process. Measurements of the fabricated PFC chip with 15 V power supply and a 100 kHz clock frequency were carried out. We got 15 V drive output voltage that is need for good PFC control. 12. An efficient Internal Buffer reusing Methodology for Intra Prediction of High Efficiency Video Coding(HEVC) Seungmok Han, Woojin Nam, Jongsik Park, Seungsoo Lee (Soongsil University, Korea) This paper proposes internal buffer reusing methodology for intra prediction of HEVC(High Efficiency Video Coding). HEVC support variable block size(from 4x4 to 64x64), so huge amount of computation need in intra prediction. As reference image expand, memory size expand. To solve this problem, we propose internal buffer reusing method. By reusing internal buffer, empty space is efficient utilization. Thus, external memory size minimized and power consumption is reduction. 13. Chua’s Chaotic Oscillator with Voltage Controllability Munkyu Jo, Jiman Kim, Hanjung Song, Namtae Kim (Inje University, Korea), YongSu Park (Chung Cheong University, Korea) This paper presents an integrated circuit oriented Chua’s chaotic system with voltage controllability. The circuit consists of an OTA-based ground inductor, capacitors, a MOS-based active resistor and an OTAbased Chua’s diode with negative nonlinearity. SPICE circuit analysis using a 0.5 um CMOS process parameters was performed for its chaotic dynamics. And we confirmed that chaotic behaviors of the system can be controlled according to the gate voltage of the active resistor. 14. Design of a Discrete-time Chaotic Signal Generator using Transconductor Yunseok Heo, Sejin Oh, Jewon Lee, Hanjung Song (Inje University, Korea) We designed a discrete-time chaotic signal generator using transconductor. The proposed chaotic circuit consists of a sample-and-hold circuit, nonlinear function block and several transconductors. By SPICE circuit analysis using a 0.5 um CMOS process parameters, we confirmed its chaotic dynamics such as time waveform, frequency spectra and attractor plot.

41

15. An On-Chip Bus Coding Method for Low-Power Serial Communications Jinyoung Park, Seokhwa Jeong, Jaesung Lee (Chungju National University, Korea) One of the crucial issues in on-chip bus serialization is the increased power consumption. In general, the on-chip bus serialization tends to dissipate more energy than parallel communications due to the bit multiplexing. This paper proposes a bus coding method for low-power onchip bus serialization. 16. Fabrication of Twisted-Nematic Liquid Crystal Cell with Electrode Layer of Silver Nanowire Sang Un Byun, Soo min Lee, Kyoung Il Lee, Byung Jik Lim, Hyun Ju Lee, Sung Hyun Kim, Churl Seung Lee, Sung Hyun Kim, Jin Woo Cho, Dae Shik Seo (Korea Electronics Technology Institute, Korea) We proposed an electrode layer of silver nanowire for use in liquid crystal displays. The electro-optic characteristics of twisted-nematic liquid crystal cell with electrode layer of silver nanowire have good potential to replace ITO electrode of liquid crystal displays. 17. A Design Guide for Low Power Linear Phase Interpolator Hye-Won Hwang, Yoonchul Choi, Jung-Hoon Chun, Kee-Won Kwon (Sungkyunkwan University, Korea) This paper presents the optimization techniques of a phase interpolator (PI) design for high linearity and low-power applications. Through the analytical study, the optimum condition for minimum power consumption with fixed bandwidth and gain is proposed. The 7-bit PI is designed using 0.11μm 1.2V CMOS technology. It has less than 0.21[LSB] DNL for all output phase and consumes 685.0μW at 7.5GHz. 18. Matrix Data Layout Optimization for Multi-Core Architectures Minwoo Kim, Won Woo Ro (Yonsei University, Korea) This paper considers the performance of the matrix operations on actual multi-core architectures. We argue that the operand matrices are accessed only in a unique direction, and propose the optimized canonical data layout. Also, tiling algorithm is utilized in order to increase the cache performance and to balance the workloads for parallel algorithm. The optimized canonical layout shows its effectiveness. 19. A Novel Mask-based Linear Algorithm for MPI Gather Operation Hyun-hak Cho, Won-young Chung, Hee-jun Yun, Yong-surk Lee (Yonsei University, Korea) In this study, we propose a mask-based linear algorithm to optimize the mostly frequently used gather function among the MPI collective communications, so the total

communication time is reduced. To measure the performance of the proposed algorithm, an MPGE simulator based on System C was designed. The MPI hardware engine that operates the proposed algorithm was also designed, and it was named the MPGE (Message Passing Gather Engine). The simulation results showed a highly improved performance for gather operation up to 32.87% with 4 nodes, 65.52% with 8 nodes, and 67.73% with 16 nodes, respectively. This result implies the proposed algorithm is useful to improve the total performance of MPSoC and other collective communication functions. 20. The Effect of Concurrency Control in Transactional Memory Systems Seung Hun Kim, Won Woo Ro (Yonsei University, Korea), Dongmin Choi (Samsung Electronics, Korea) Transactional Memory (TM) systems have been proposed to overcome limits and problems of the lock-based synchronization method. Previously proposed researches have focused on conflict detection and version management to diminish the performance degradation factors. However, as the number of running threads increases and the long transactions gradually appear, other problems related with the high contention severely degrade the overall performance. In this paper, we have shown that the control of concurrent execution of transactions is effective to the applications which have high contention, and produces no harm on the applications with low contention. 21. Low Power Analog Front End for Digital Hearing System Ji Young Ye, Choon Sik Cho (Korea Aerospace University, Korea) An ultra-low power analog front-end for digital hearing aid system is proposed and integrated. To magnify the input signal according to the user's hearing state, a pre-amplifier composed of variable gain amplifier (VGA), peak detector and nonlinear controller is realized with maximum gain of 64dB and minimum gain of 14dB, and 50dB dynamic range is achieved. The power consumption of the whole analog front end shows 500 μW. 22. Design of an Integrated Photo-sensitive Chaotic Oscillator Sangbaek Han, Zhoujichao, Hanjung Song, Yong Su Park (Inje University, Korea) This paper presents a photo sensitive chaotic oscillator with light controllability. The proposed chaotic oscillator consists of a photo diode, two phase clock generator, nonlinear function blocks and sampleand- hold circuit. SPICE circuit analysis using a 0.11 um CMOS process parameters was performed for its chaotic dynamics. And we confirmed that chaotic behaviors of the circuit can be controlled according to light intensity.

42

23. Failure Mechanisms Analysis of Passive RFID Tag Used in 900 MHz Soon-mi Hwang, Chul-hee Kim, Kwan-hun Lee (Korea Electronics Technology Institute, Korea) RFID Tag is a product where modules like IC chip, antenna, and battery are integrated, and 'product reliability' is important as much as the function of each part. In thesis, we analyze field failure of passive RFID Tag which the most widely used in the domestic market. And then we analyze major failure modes and failure mechanisms of passive RFID Tag through environmental stress tests. 24. Analytical Placement Using Continuous Density Function Iksoon Lim, Yu Wang, Hyunchul Shin (Hanyang University, Korea) Analytical placement is widely used recently owing to its good performance. Analytical placement uses information of wirelength cost and density cost during placement of integrated circuits. To compute the density cost, many of placement tools use bin grid structure of chip area. But if a bin grid structure is used, density accuracy to reflect the violation of area utilization is reduced. In this paper, we propose a method that can deal with continuous density model. By applying this method, wirelength cost is reduced by 13% and overlap cost is reduced by 56% for a set of benchmark examples. 25. Efficient On-chip Power/Ground Distribution Grid Inductance Model For Full-Chip Layout Extraction JeongMin Jo, SangKeun Kwak, SoYoung Kim (Sungkyunkwan University, Korea) In this paper, an effective inductance extraction model which is applicable to on-chip power/ground grid structure and a software is developed to automatically generate RLC extraction netlists based on post-layout RC extractions and the power grid structure information. The accuracy of proposed loop inductance model is applied to verified by comparing the test circuit simulation results from the partial element equivalent circuit (PEEC) model and the proposed effective loop model, and the efficiency of the proposed model is examined. 26. Efficient Energy-Aware Iterative Schedule Refinement Algorithm for Heterogeneous Multiprocessor Systems Jongdae Kim, Hyunchul Shin (Hanyang University, Korea), Byungtae Kang, Hwangsik Bae (Samsung Co., Ltd., Korea) Multiple processor SoCs (MPSoCs) are frequently used to solve computationally expensive problem. Mapping of applications to MPSoC architectures and scheduling of tasks are key problems in system level design of embedded systems. In this paper, a new energy-aware task mapping/scheduling algorithm based on iterative refinement is proposed. Our method can reduce the energy consumption by 5.3% when compared to a previous well-known method for a set of benchmark examples.

27. Design of 220 GHz Amplifier and Mixer for THz Imaging System Woojin Chang, Jong-Won Lim, Ho-Kyun Ahn, Hyung-Sup Yoon, Jae-Kyoung Mun (ETRI, Korea) This paper introduces the design of a 220 GHz band amplifier and a mixer for transmitters of high resolution active and passive terahertz imaging systems. The designed 220 GHz band amplifier has a small signal gain of 12 ~ 15 dB for 218 ~ 223 GHz. The designed 220 GHz mixer has a conversion loss of 13.8 ~ 16.6 dB, an IF-to-RF isolation of 22 dB, an input 1 dB gain compression power (P1dB) of -25 dBm for an input intermediate frequency (IF) of 5 ~ 17 GHz, an output RF of 217 ~ 229 GHz, and a local oscillation (LO) frequency of 234 GHz. 28. Analysis of Tangent Ogive Radome based on High Frequency Techniques Kyung-Won Lee, Jong-Gwan Yook (Yonsei University, Korea), Ic-Pyo Hong (Kongju University, Korea) This paper presents a technique which is to predict radome effects on antenna patterns by integrating first over the radiating antenna to determine the field incident on the inner surface of the radome, and by integrating next over the curved outer surface to obtain the far field. This is high frequency technique based on physical optics(PO) and geometric optics(GO). 29. Specific Absorption Rate Reduction Method for a Microstrip Patch Antenna by Ground Plane Size Reshaping Technique W. S. Choi, H. M. Lee (Kyonggi University, Korea) In this article, a new method for the reduction of a specific absorption rate (SAR) of a microstrip antenna is presented. By cutting out the edges of the ground plane of a patch antenna, the front-to-back ratio of a patch antenna significantly improved. As a result, it shows good characteristics such as a suitable gain and a SAR value below international standard. Thus it can be applied to the wearable antenna for wireless local area network (WLAN: IEEE 802. 11a, n- 5.725~5.825GHz) band applications. 30. Analysis of Tympanic Membrane Movements Using Template Matching Sasiporn Anumas, Soo-chan Kim (Hankyong National University, Korea), Yang-Sun Cho (Samsung Medical Center, Korea), Gyu-Cheol Han (Gachon University Gil Hospital, Korea) Pneumatic otoscopy (PO) is well-known to be most helpful for optimally assessing the presence or absence of a middle ear effusion (MEE). We recorded the tympanic membranes (TM) movement with a video pneumatic otoscopy (VPO) and analyzed in terms of the position of the umbo and the angle of the malleus at static stage, positive and negative pressure stages. The template matching method was used to track and measure the movement of tympanic membranes automatically. The result of the propose method is more sensitive compare with manual method 6.49% at positive

43

pressure stages and 1.09% at pressure stages. We can reduce the analysis time and improve the objectivity of measurement with the proposed method. FA1: Semiconductor Devices Friday, Feb. 3, 2012, 09:15-10:30 Hambaek 1

Chair: Joongho Choi (University of Seoul, Korea) 1. Fabrication of p-type Copper Oxide Thin-film Transistors Using the in-situ Vacuum Annealing Process Dong-Woo Nam, In-Tak Cho, Jong-Ho Lee (Seoul National University, Korea), Joonsung Sohn, Sang-Hun Song, Hyuck-In Kwon (Chung-Ang University, Korea) In this article, the p-type oxide thin-film transistor (TFT) was fabricated using the copper oxide active layer which was deposited by the RF magnetron sputtering at room temperature and in-situ annealed under vacuum environment at 500 oC. Grains and phases of the thin-films were investigated by scanning electron microscopy and X-ray diffraction measurement, respectively, before and after the in-situ annealing process. The electrical performances of the fabricated bottom-gate copper oxide TFTs were investigated at various bias conditions. 2. RF Performance of SiGe HBTs with Sub-Ground Rule Emitter Width Yongho Oh, Jae-Sung Rieh (Korea University, Korea) In this work, the trends of cutoff frequency (fT) and maximum oscillation frequency (fmax) as well as stability factor (K-factor) have been compared for SiGe HBTs with emitter finger width drawn with minimum ground rule and sub-ground rule. The measured results showed larger fT for minimum ground rule (MGR) devices and larger fmax for sub-ground rule (SGR) devices. It is also observed that the K-factor of SGR devices is smaller than that of MGR devices. 3. Non-volatile Memory Using a-SixGey:H as Active Layer with Different Ge Contents Woojin Choi, Kyungsoo Jang, Jaehyun Cho, Kyunghyun Baek, Kyuwan Song, Juyeon Jang, Jaewoo Choi, Junsin Yi (Sungkyunkwan University, Korea) We fabricated the Silicon Germanium (a-SiGe) as an active channel layer using SiO2/SiOx/SiOxNy (OOxOn) stacked non-volatile memory (NVM). We are studied the impact to change according to Ge contents of a-SiGe:H NVM. In the case of Ge 20%, is shown 58 % of storage capacity and window size of -6.3 V. 4. Effect of Subgap States on the Channel Mobility in Amorphous Indium-Gallium-Zinc Oxide Thin Film Transistors In-Tak Cho, Jong-Ho Lee (Seoul National University, Korea), Ick-Joon Park, Sang-Hun Song, Hyuck-In Kwon (Chung-Ang University, Korea)

In this article, we propose the mobility extraction method using the basic charge transport theory and the frequency independent capacitances extracted from the multi-frequency capacitance-voltage method in amorphous indium-gallium-zinc oxide thin-film transistors. This method is free from the ideal metaloxide-semiconductor field effect transistor currentvoltage model, and can include the effect of subgap states on the calculation of the mobility. FB1: Vehicular Electronics Friday, Feb. 3, 2012, 09:15-10:30 Hambaek 2

Chair: Seungwoo Seo (Seoul National University, Korea) 1. Intelligent Traffic Control Based on Queueing Theory and Proportional Fairness Algorithm at Intersections Chanwoo Park, Myeongwoon Jeon, Kyeongjun Ko, Sangmin Heo, Jungwoo Lee (Seoul National University, Korea) Intelligent Transportation System (ITS) researches, including vehicular communications, have been making great advancements to improve road safety and traffic flow efficiency. The research on driverless cars is in progress. In this paper we assume a system with fully autonomous cars and infrastructure to avoid collision completely. We apply queueing theory to simplify the road network model and make the algorithm more mathematical and realistic. Roads and the intersection are modeled as queues. We propose a new traffic control system without traffic lights at an intersection. 2. Multithreaded Programming for Real-time Vehicle Detection Jonghwan Kim, Chung-hee Lee, Young-chul Lim, Soon Kwon, Chi-ho Park (Daegu Gyeongbuk Institute of Science & Technology, Korea) We introduce a real-time vehicle detection method using computer vision technique. In vehicle research fields, system speed is a very important element because the vehicle detection is performed on traffic road that changes constantly. For increasing the speed, the multithreaded programming skill is applied to our system. Our vehicle detection method is divided into three main parts: preprocessing, vehicle detection, and tracking. Our proposed method computes the preprocessing part and tracking part at the same time using a POSIX thread method. Through experiment results, we show the improvement of system speed using the proposed method. 3. Functions and Characteristics of Door Control Unit for EMU Euijin Joung (Korea Railroad Research Institute, Korea) We have been developed electric plug-in door. The door is controlled by Door Control Unit(DCU) following the order of Automatic Train Protection (ATP) that is a kind of train

44

signalling system. DCU has to simultaneously open and close the doors and the operation of it is related to the passengers safety. So the DCU is a safety device that is important to reliability and safety. DCU is composed of several devices for control, motor driving, Input/Output, communication and power. This paper describes the functions, characteristic, requirement, and subsystem of DCU used for the electric plug-in door. 4. FPGA Implementation of FlexRay-MOST Gateway for Automotive Network Zehua Dong, Zheyan Piao, Yujing Wu, Jin-Gyun Chung (Chonbuk Natinal University, Korea) Due to the increasing requirements on the high speed communication and infotainment applications for automobiles, much research has been carried out for high speed automobile network technology called Media Oriented System Transport (MOST). Since many electronic control units (ECUs) are connected to the traditional automotive networks such as CAN, LIN and FlexRay, a network gateway is needed to bridge between MOST and other traditional networks. 5. CAN Message Compression Using Difference Bit Rearrangement Yinan Xu (Yanbian University, China), Yujing Wu, Zheyan Piao, Jin-Gyun Chung (Chonbuk National University, Korea) In this paper, we propose a CAN message compression method using bit rearrangement to reduce the CAN bus load and the error probability during the transmission of CAN messages. In the proposed method, the difference bits are rearranged to further increase the compression efficiency. By simulations in car applications, it is shown that the CAN transmission data is further reduced up to 26% by the proposed method, compared with the conventional method. FC1: VLSI Design and Applications Friday, Feb. 3, 2012, 09:15-10:30 Hambaek 3

Chair: Changsik Yoo (Hanyang University, Korea) 1. Design of Digital Pulse Processing (DPP) Unit for XRF Systems Yinan Xu (Yanbian University, China), Zheyan Piao, Jin-Gyun Chung (Chonbuk National University, Korea) In this paper, based on trapezoidal pulse shaping, we present an efficient peak detection algorithm for the input waveforms in the shape of exponential pulses used in X-ray fluorescence (XRF) systems. It is demonstrated that the implemented DPP board works successfully in practical XRF systems. 2. Zigzag Snake Scan for Efficient Cache Access in H.264 Motion Estimation Deumji Woo, Chae Eun Rhee, Hyun Kim, Hyuk-Jae Lee (Seoul National University, Korea)

Cache design is adopted to reduce external data bandwidth for fast integer motion estimation (IME). In the popular MB-based pipeline architecture for a hardware-based H.264 encoder, simultaneous access of cache by IME and fractional motion estimation (FME) engines cause cache port conflicts and decrease the computation speed. In this paper, the zigzag snake scan is proposed to reuse the reference data for IME and to reduce the frequency of cache access. 3. Hermes: Scalable and Load Distribution Engine for General-Purpose Computing on Graphics Processing Units (GPGPU) Junghee Lee, Hyung Gyu Lee, Jongman Kim (Georgia Institute of Technology, USA), Chrysostomos Nicopoulos (University of Cyprus, Greece), Dongkun Shin (Sungkyunkwan University, Korea) Modern Graphics Processing Units (GPU) constitute typical examples of multicore systems with more than one hundred processing. However, in order to efficiently exploit the increasing number of on-chip processing cores, a scalable enabler of massively parallel computing is imperative. This paper proposes Hermes, a scalable and dynamic load distribution engine that exploits hardware aggressively to reinforce massively parallel computation in many-core settings. Our experimental results show that Hermes is scalable. Given the same amount of jobs, using Hermes is at least 4.5 times faster than existing techniques when the number of processing cores is 4096. 4. TSV-aware Hierarchical Floorplanning for 3D ICs Byunghyun Lee, Taewhan Kim (Seoul National University, Korea) 3D integrated circuits (ICs) have been proposed as a solution of increasing interconnect problem in 2D ICs. Stacked dies of 3D ICs are integrated with Thorough-Silicon-Vias(TSVs). Since TSVs are huge(1-20um) and affect the device area, TSV-aware method is necessary during physical design. In this work, we propose TSV-aware hierarchical floorplanning for 3D ICs to optimize wirelength and meet the timing constraint. 5. Simulation of Floating Gate MOSFET Memory using Si Quantum Dot with Ge Core and High-k Material as Tunnel Oxide Yudi Darma, Rena Widita (Institut Teknologi Bandung, Indonesia) In this paper we simulate the performance of floating gate MOSFET memory using Si quantum dot with Ge core as the electronic storage node and high-k material as the tunnel oxide instead of SiO2. As the results, retention time could be increase significantly without deteriorating the writing/erasing speed. By selected the dot size of 9-12nm and the tunnel oxide thickness of 2nm, the retention characteristic can reach up to 109s while the writing and erasing time at the order of 10-6s. Also, the leakage current through the tunnel oxide become a major concern since

45

continues shrinkage of the devices. Here, we also simulate the MOSFET performance by replacing the SiO2 tunnel oxide with high-_ material such as HfO2, ZrO2, and Y2O3. Our simulation results show that the leakage current can be suppressed by the factor of 10. FD1: Software and Artificial Intelligence Friday, Feb. 3, 2012, 09:15-10:30 Taebaek 1

Chair: Jun Heo (Korea University, Korea) 1. AR-based Bookmark Recorder in Browsing Books in a Library Yoko Watanabe, Mitsunori Makino (Chuo University, Japan) This paper proposes a bookmark recorder system assisted by the augmented reality(AR) technology, in which a user, holding a book, can add/delete the book information to his/her bookmark list only by his/her head action. Since the proposed system needs no holding device, the user can freely use his/her hands except holding the book. 2. An Educational Three-dimensional Information Visualization System of Network Security Kenichi Kato, Mitsunori Makino (Chuo University, Japan) This paper proposes a three-dimensional (3D) information visualization system of network security as an educational tool for internet users, who are poorly-informed about the information security. Whenever a user browses websites, the proposed system checks whether they are dangerous or not. If so, the system displays graphically warning and educational information about detected threat. Through its use, the user are expected to be safely shielded and educated. 3. Using Data StreamManagementSystems for Computer Worms Monitoring Shikhaliyev Ramiz Huseyn (Azerbaijan National Academy of Sciences, Azerbaijan Republic), Seung-Woo Seo (Seoul National University, Korea) This paperdiscusses some of the questions on the data stream processing, that includesdata stream models, continuous query processing,data stream management systems,and the possibility of using them in monitoring and detection of worms. 4. Designing Web Based Network Configuration Management Database System Using Text Parsing Method (Case Study: Pt. Prawedanet Aliansi Teknologi) Khodijah Hulliyah, Victor Amrizal, Muhammad Iqbal (Syarif Hidayatullah State Islamic University Jakarta, Indonesia) This Network Configuration Management Database is a web-based system used to collect the hardware configuration data easily from a computer network device configuration files (.txt file). One of the problems faced by service

companies in the field of computer networks is a problem of configuration management data from devices they have, where it is so important in the company's activities as evidence of documents of various configurations of devices they have. The more clients that they handle, the more the number of devices that belong to them are configured. This often creates obstacles in the implementation of controls to the presence of the device and the resources available in these devices. To assist in solving the problems mentioned above, the authors conducted a study and design an application Network Configuration Management Database System using the method of parsing text. The author conducted the study using research methods literature study, interviews, and observation in the office of PT. Prawedanet Technology Alliance. The author uses the methods of the Unified Process (UP) as a method of system development. The application is built using the PHP programming language and database version 5.2.9 MySQL version 5.0.51a. The resulting output is a form of documentation and reports the device configuration. The application was made as a tool for companies that can manage and present a computer network device configuration information quickly and efficiently. FE1: Bio-Electronics Friday, Feb. 3, 2012, 09:15-10:30 Taebaek 2

Chair: Seungjun Lee (Ewha Womans University, Korea) 1. Compensation of Slowly-Varying Static Fields for Cardiovascular Flow Imaging Pan-Ki Kim, Chang-Beom Ahn (Kwangwoon University, Korea), Whal Lee (Seoul National University Hospital, Korea) Cardiovascular flow imaging is a quantitative method to measure the flow velocity in the heart and arteries. Slowly-varying static fields due to eddy current or concomitant field should be properly compensated for the quantitative evaluation. In this paper we propose a technique to compensate for the slowly-varying static fields. The internally generated fast varying static field due to susceptibility or nearby rf coil effect is excluded for the estimation by post-processing. 2. A Message-passing Approach for Finding Cancer Subnetwork Markers Byung-Jun Yoon (Texas A&M University, USA) It is generally difficult to predict cancer outcome based on individual genes, and recent research results have shown that the use of pathway or subnetwork markers can improve the accuracy and reliability of such prediction. In this work, we propose a novel method for identifying subnetwork markers that can accurately predict cancer metastasis. The proposed method takes an efficient message passing approach to search for non-overlapping subnetwork markers in the human protein interaction network. Experimental results show that this method can identify robust subnetwork markers that may lead to enhanced cancer classifiers.

46

3. Carbon Nanotube Electrode-integrated Microneedlebased Non–enzymatic Glucose Sensor for Painless Diabetes Testing Application Youngsam Yoon, Hanjung Song, Koangki Yoo, Jeong-Bong (JB) Lee (The University of Texas at Dallas, USA) We report the design, fabrication and in-vitro testing of a microneedle-based high sensitivity nonenzymatic glucose sensor. This is a novel experimental demonstration of integration of microneedle for painless blood sampling and nano particle surface modified carbon nanotube electrode non-enzymatic glucose sensor for high sensitivity diabetes testing application. 4. Design and Fabrication of the Optical Waveguide Integrated with the Fungus Assemble Gold Nanoparticles as Microwires C. Viphavakit, W. Mohammed, J. Dutta (Asian Institute of Technology, Thailand), N. Atthi, A. Poyai (Thai Microelectronics Center, Thailand), S. Boonruang (National Electronics and Computer Technology Center, Thailand) This paper studied the design and fabrication of an optical waveguide by using fungi as a template for molding the gold microwires. In this work, the channel with a 10 　m depth used to grow the fungus and the waveguide with its taper are completely fabricated. The size of the channel is difficult to control due to the isotropic etch on quartz substrate. The effects of hydrophobicity on polysilicon region which may affect the fungal growth and the optical properties will be further studied. 5. Sparsity-enforced Iterative Reconstruction for Cardiac CINE MRI Hye-Jin Hong, Chang-Beom Ahn (Kwangwoon University, Korea) A new compressed sensing technique by iterative truncation of small transformed coefficients (ITSC) is proposed for cardiac CINE MRI. Compressed sensing is an alternative approach to achieve high spatial and temporal resolutions with much reduced number of data points and/or reduced hardware requirement. Random sampling and nonlinear reconstruction are essential components of the compressed sensing. Sparsity is enforced in the spatial-temporal frequency domain, yet data consistency in the spatial frequencytime domain is maintained. The performance of the technique appears superior over those of existing techniques such as zero filling, sliding window and k-t FOCUSS. FF1: RF Circuit and Systems Friday, Feb. 3, 2012, 09:15-10:30 Taebaek 3

Chair: Hyuk-Jae Lee (Seoul National University, Korea) 1. A Comparison of Low-phase-noise Oscillator Topologies Using BAW Resonator Mingdong.LI, S. Seok, N. Rolland, P. -A. Rolland (IEMN, France), Yeonsu Jang (Seoul National University, Korea), Hassan El Aabbaoui, Emeric de Foucauld, P. Vincent (CEA-LETI Minatec, France)

This paper presents two different topologies of low phase noise BAW-based oscillators centered at 2.1 GHz. Both a common-base and a colpitts differential topology have been achieved. Measurement shows that the common-base is more sensitive to power supply noise, and this results in an advantage for the differential topology that exhibits a phase noise 7 dB lower than the single-ended one. The best achieved phase noise was -136.5 dBc/Hz at 100 kHz offset from the carrier frequency of 2.1 GHz for a colpitts differential topology, with an output power close to -6.5 dBm and a core consumption of 21.6 mW. 2. RF Optimization Framework in GSM Networks Umid Niyazov (Tashkent University of Information Technologies, Uzbekistan), Eldor Parmonov (Ulm University, Germany), Qudrat Hosilov (Ucell mobile company, Uzbekistan) This paper is devoted to the RF optimization of radio signals in GSM networks and its key concepts. RF optimization is an important part of network planning and optimization, therefore, a toughness of it should be solved by optimization criterions and tools as mentioned below. Moreover, the codes have been created in order to understand and analyze the RF signal´s quality and strength in MATLAB environment. 3. PerMX Polymer Zero-level Pacaging for RF Devices S. Seok, J. Kim, N. Rolland, P.A. Rolland (IEMN/CNRS, France), J. Jeong (Seoul National University, Korea) This paper presents a new film type PerMX polymer-based low temperature zero-level packaging technique. PerMX polymer capping technique was developed in two different types; 1) PerMX ring and PerMX membrane, 2) SU8 ring and PerMX membrane. The height of the implemented cap was 100 μm having 50 μm thick sealing ring and 50 μm thick membrane and the implemented dimensions were 1.4x1.1 mm2, 2.1x2.1 mm2 and 5.1x5.1 mm2. The effect of the PerMX packaging on coplanar was characterized to have negligible insertion loss change of the packaged transmission line while its return loss is better than 20 dB at the measured frequency range. 4. A Sense Amplifier Using Binary Code Inversion Encoder-Decoder for On-Chip Flash Read Current Reduction Daejin Park, Tag Gon Kim (Korea Advanced Institute of Science and Technology, Korea), Sungjoon Kim (ABOV Semiconductor, Korea) This paper proposes a newly-designed on-chip flash read path and binary inversion techniques to reduce the sensing current of sense-amp for the bit-line read-bus interface. The inverted binary code data is restored by the inversion on-chip hardware, which is simply implemented with static flip-flop registers. The proposed techniques is first evaluated for DSP stone benchmark and applied to the implementation of modified sense amplifier of the microcontroller chip with 4Kbytes on-chip flash, which shows maximum 640uA read-current reduction.

47

5. The Conducted EMI test in sun mode on the Geostationary Earth Orbit Satellite Eui-Chan Kim, Sang-Kon Lee (Korea Aerospace Research Institute, Korea) This paper describes the results of the EMC Conducted test performed on COMS(Commuication, Ocean, Meteorology Satellite) that move around the geostationay earth orbit. The safety margin in conducted mode of 6dB (between the voltage ripple on the power bus and the conducted susceptibility qualification level of units) as the good health of the satellite during Conducted test have been demonstrated in the sun mode S/C configuration. Poster 4: Software and Artificial Intelligence Vehicular Electronics VLSI Design and Applications Bio-Electronics Friday, Feb. 3, 2012, 09:15-10:30 Lobby, 5F

Chair: Hyun-Kyu Yu (ETRI, Korea) 1. Photomosaic Generation based on Local Features Do Kyung Shin, Young Shik Moon (Hanyang University, Korea) We propose the method of generating the photo mosaic by using square-shaped photo tiles for pictorial presentation or internal pattern in an input image. This method divides an input image into square-shaped tile areas, and then pictures in the image database are matched to these tiles by the matching similarity which is extracted by color and texture information. 2. Robust Object Tracking Using Selected Inlier Features Young-Chul Lim, Chung-Hee Lee, Jonghwan Kim (Deagu Gyeongbuk Institute of Science & Technology, Korea) We propose a feature based object tracking method with selected reliable inlier features. Most previous feature based tracking methods mainly focused on feature extraction and feature tracking. However, reliable feature selection is more important to track the target’s position. We address the method that selects the right matched feature pairs and removes outlier features corresponding to cluttered background or other objects. And then, the method can track a target object robustly while using the selected features. 3. Analysis of Non-radiative Recombination Mechanism Using Cathodoluminescence Measurement in GaN-based Light Emitting Diodes Euyhwan Park, Garam Kim, Janghyun Kim, Byung-Gook Park (Seoul National University, Korea), Donghoon Kang, Joong-Kon Son (Samsung LED Co., Ltd., Korea) We have investigated the non-radiative recombination of GaN-based blue light-emitting diodes using electroluminescence (EL) and cathdoluminescence (CL) techniques. Comparing between EL and CL measurement,

we can map the defects causing non-radiative recombination centers. It is concluded that the advantages of EL and CL image mapping of defects in GaN, establishing a strong correlation between the two techniques should be very beneficial for further validation of the two techniques for GaN LEDs. 4. Development of e-Book Model for Graded Learning on User-centered Sung-il Hong, Chi-ho Lin (Semyung University, Korea) In this paper, we are proposed development of eBook Model for graded learning on the user-centered. It is the principal advantage of e-Book by students considering the teaching and learning on the web to access opportunities for learners wherever they are free to development individual learning, to enable distance learning is proposed. In the propose e-Book model, development so that the user can select between “Linux” and “Windows” in the operating system and also decide the outline and type. The selection of educational element was development so that the user can move to the study graded wants by selecting among indexes. It was development so that the user can use the book mark function to go back to the place that the user marked before and start studying from there. Also it was development using voice synthesis technology to read the contents of all study screens with voice for the learners with visual impairment. In this paper, if you using speech synthesis technology that you want to view special class for students with disabilities and general education students through the same training courses can improve the effectiveness is judged. In this paper, the result of appliance of developed data on real class of young-wol Y high school, repetitive and continuous study the experimented group increased the understanding of the learners and therefore increased their motive to study that is needed for self-directed study which proved to increase. 5. A RDF Schema Design for Named Objects on Web(NOW) Young-Ho Lee, Young-Seok Han, Yong-Wan Koo (University of Suwon, Korea) The aim of semantic web is to offer more efficiency and precision in information retrieval and mining from mechanical process of web contents. However, semantic web can’t offer operations such as real time update and autonomous creation of metadata, because it resolves only information of resource. For overcoming the limitation of semantic web, we propose a Named Objects on Web(NOW) model and this paper suggests the design of RDF schema that defines each property used to describe static statements of NOW. The static statement of NOW structured in RDF means NOW is an extension of semantic web.

48

6. Development of Probabilistic Analysis Testing Tool for Train Control System Software Hyunjeong Jo, Jonghyen Baek, Kangmi Lee, Ducko Shin, Kyungho Shin, Gonyop Kim, Jaeho Lee (Korea Railroad Research Institute, Korea) The railway signaling system is being converted to the computer system from the existing mechanical device, and the dependency on software is being increased rapidly. Though the size and degree of complexity of software for railway signaling system are slower than the development speed of hardware, it is expected that the size will be grown bigger gradually and the degree of complexity will be increased also. Accordingly, the validation of reliability and safety of embedded software for train control system was started to become influential as the important issue. Accordingly, various software test and validation activities are highly recommended in the international standards related railway software. In this paper, we presented an automated probabilistic analysis testing tool for train control system software, and presented its result of implementation. 7. Target Tracking by the Particle Filter Using Multiple Adaptive Re-sampling Chunfei Ma, June-Yong Jung, Byoung-Kyu Dan, Dae-Hwan Kim, Sung-Jea Ko (Korea University, Korea) In this paper, we first propose a multiple adaptive re-sampling (MAR) method and then incorporate it into the standard particle filter (SPF) to solve the problems in dynamic scene tracking. The novelty lies in two aspects: 1) the MAR is an iterative sampling that progressively updates the sampled particles based on the newest observation; 2) the iteration number of sampling varies depending on the target object. Experimental results show that the proposed method can achieve significant improvement as compared with the SPF. 8. Personalized Knowledge Digestion Using Extendable Dynamic User Model Youngrae Kim, Chang-Seok Bae, Sung-Won Sohn (Electronics and Telecommunication Research Institute, Korea) Ever since augmented reality development became real world based technology, people who are using this technology are overwhelmed with information. Knowledge digestion is one of growing field of information abstraction which can be used to summarize information shown to the user. There are many obstacles to overcome to make personalized digestion of information. First, personalized user model should be created for knowledge digestion. Second, the technology used to retrieve and send information to user needs to be improved. Third, the digestion architecture must be revised for the personalized information digestion. In this paper, we present the obstacles of personalized information digestion, and we propose the novel extendable dynamic user model and knowledge digestion architecture.

9. A Study on the Ferrule Polishing Process Using the Artificial Neural Networks Techniques Hyo-Seok Kang, Myung jo Choo, Mignon Park (Yonsei University, Korea) This paper proposes the ferrule polishing process based on artificial neural networks. Because excessive processing increase faulty rate such as scratch, ferrule polishing processing time is changed by a roughness of the cutting surface in a ferrule. Until now, ferrule polishing processing time is adjusted manually. In this paper, we automatically adjust the ferrule polishing processing time, which is learned by a roughness of cutting surface using artificial neural network technique. We prove the usefulness as reducing faulty rate and processing time. 10. MAC Entry based Fingerprinting Method for Wide Area Localization Hyuk-Won Cho, Jong-In Jung, Sheng-lei Xu, Sang-Sun Lee (Hanyang University, Korea) In this paper, we proposed WAP(Wide area positioning) algorithm for suitable mobile positioning technology. WAP is a decision algorithm that determines the large scale area such as building, floor, and sector. WAP consists of MAC entry that could distinguish building, floor, and sector to quickly determine the position just by comparing the information from MAC entry. 11. Levitation and Guidance System of a Small-Scale Maglev Train for Super Speed Applications Chang-Hyun Kim, Jong-Min Lee, Hyung-Suk Han, Bong-Seup Kim, Doh Young Park (Korea Institute of Machinery and Materials, Korea) In this paper, the levitation and guidance systems for super speed maglev trains are studied. For experimental purpose, a small-scale maglev train was manufactured, and the levitation and guidance system is modeled considering the analytic design and mechanical interactions. And, the levitation and guidance controller is proposed based on this model. The control characteristics are verified by simulations. 12. Battery State of Charge Estimation Algorithm & Implementation Yong-ho Kim, Dae-hwan Kim (Korea Electronics Technology Institute, Korea) These days more electric devices are implemented in car, and more accurate estimation of SoC is required. OCV with current integration and Internal Resistance is essential method of Battery SoC Estimation. In this paper we propose OCV with current integration method and compare with Internal Resistance method. In OCV with current integration method estimation error was less than average 2%, but requires more than 5 minutes to stabilize OCV. If Stop and Running conditions are change frequently, estimation error will increase. In Internal resistance Modeling method, in high SoC state, estimation error was more than 15%, and in low SoC state, estimation error was less than 8 %.

49

13. A Procedure of Reliability Prediction in Advanced EMU Euijin Joung, Gildong Kim (Korea Railroad Research Institute, Korea) An advanced EMU has been developed to improve reliability, safety, maintainability, energy efficiency and environmental friendship. Several new technology and system are developed and adopted to the advanced EMU. Since the new developed system influences to the RAMS(Reliability, Availability, Maintainability, Safety) factor, we suggest new reliability target and reliability prediction plan to design and develop Advanced EMU. After that, reliability demonstration will be processed by testing the system on the specific test line to review RAMS prediction and enhance reliability of advanced EMU. This paper represents the reliability procedure to apply to the advanced EMU based on the referenced RAMS standards. 14. 3D Vibration Measurement Using One Laser Scanning Vibrometer Dongkyu Kim, Jongkyu Jung, Sungui Hwang, Kyihwan Park (Gwangju Institute of Science and Technology, Korea) Laser Doppler vibrometer (LDV) is a noncontact type vibration measurement device that measure one dimensional vibration. Using 3 sets of LDV, 3-dimensional vibration can be measured. However, the use of 3 sets of LDV has the disadvantage of high cost. In order to overcome the disadvantage, we propose the 3D vibration measurement method using only one LDV and Light detection and ranging (LIDAR). We use 3 kinds of shapes obtained at 3 different measurement locations. 15. Real-time Lane Detection Using Adaptive ROI Determination Dajun Ding, Chanho Lee (Soongsil University, Korea) In the driver-assistance system, lane detection can provide important information for safety. In this paper, a real time vision-based lane detection method is proposed to detect the lane marking lines in video frames. The region of interest(ROI) is determined automatically and adaptively using the former frames’ results. Our method employs Hough Transform for robust and accurate lane marking. 16. Energy-Efficient Switch Arbitration for Network-on-Chip Router Seongmin Jo, Youngjin Jo, Yong Ho Song (Hanyang University, Korea) Power consumption is a critical design consideration when building scalable NoCs. In this paper, we present an energy-efficient switch arbitration mechanism for NoC routers with clock-gating. 17. An All-digital, Voltage and Temperature Independent Process Sensor Young-Jae An, Kyungho Ryu, Jung-Hyun Park, Seong-Ook Jung (Yonsei University, Korea)

In this paper, we propose a process sensor consisting of four ring oscillators (ROs), two up-down counters, and a register. The process sensor senses process variation using the period difference of RO. The proposed sensor, which is designed using 0.13-μm CMOS technology with a supply voltage of 1.2-V, senses the process corner accurately within 99.74% confidence internal and is robust to the temperature and supply voltage variation. 18. An Efficient Combined Module Architecture for HEVC Intra Prediction Woojin Nam, Seungmok Han, Jongsik Park, Seongsoo Lee (Soongsil University, Korea) This paper proposes combined module architecture for HEVC intra prediction. HEVC support maximum 35 intra prediction modes, so huge amount of computation need in intra prediction. To solve this problem, we propose combined module of HEVC intra prediction. Planar module and Angular module have some similarity. By combining the two structures, we can reduce module number. Therefore, hardware area is minimized. 19. Large Open Stripline for Immunity Test of EUT Jung Hoon Kim, Tae Heon Jang (Korea Testing Laboratory, Korea) This paper suggests an open stripline (OSL) for immunity test of EUT (Equipment under test) with large size. Radiated immunity test of a EUT has been performed in the conventional OSL which height is 0.8 m, for 150 kHz-150 MHz according to CISPR 20 and IEC 61000-4-3. The conventional OSL cannot be used for EUTs with above 0.7m height. In this paper, new OSL with 1.4m height is suggested and the field distribution inside the OSL is compared with one of the conventional OSL by moment method. The results show that the field region within 2dB standard deviation in new OSL become larger than the conventional OSL. 20. Case Study of EMI from DRAM Data Output in Wireless Mobile Communication Systems SangKeun Kwak, SoYoung Kim (Sungkyunkwan University, Korea) This paper presents a case study to predict electromagnetic interference (EMI) of DRAM data output used in wireless mobile communication systems. EMI from DRAM output causes a problem of poor reception in some wireless mobile systems. We investigate a voltage spectrum analysis using Fast Fourier Transform (FFT) for DRAM data output measurements. This method can predict the effects of EMI in DRAM at the designated frequency points. The voltage spectrum results of DRAM data output are compared with EMI measurement results obtained from near-field scan in wireless mobile communication systems and they showed good correlation.

50

21. Application of Concentration or High Attention - Car Racing Biofeedback Game Woongbin Kim, Minkyu Ahn, , Yoobin Koh, Hohyun Cho, Sangtae Ahn, Sung Chan Jun (Gwangju Institute of Science and Technology, Korea), Hyunmin Moon (Gachon University of Medicine and Science, Korea) Brain computer interface makes it possible that a user controls devices and computer knows user’s state. In this context, biofeedback also gets interested. Human can adopt himself to change his brain state in the purpose of the treatment of mental disorder or improving his performance such as attention. Such biofeedback concept is introduced to develop car racing game in this study. It is an entertainment game, but also gives feedback to user about his concentration level; therefore the user can improve his attention state. Our system was implemented under BCI2000 platform (general purpose software in BCI research). Thus, any other acquisition device can be applicable easily if supporting module for the device exists. Graphical software visualizes concentration index and hardware module controls the velocity of a racing car. A user can improve his/her concentration by controlling a racing car through biofeedback. 22. Implementation of New Medical Services Using Standard Protocol and Smart Mobile Devices Keun-young Kim, Myoung-seok Ryu, Yu-min Kim (Biomedical Institute, Bionics Corp., Korea) Using a standard protocol such as HL7, the interaction between mobile devices and medical devices is implemented. The mobile handheld devices measure and transmit the vital sign and medical information, and they can provide various user friendly contents. These various health contents and new health care services through wireless medical devices can establish new medical services. 23. Non-invasive Detection System of Respiration Signal Using an Infrared Sensor Yongho Lee, Jehun Hahm, Hyukmin Eum, Mignon Park (Yonsei University, Korea) In this paper, we propose a novel method to noninvasively measure respiration rate using an infrared sensor. The infrared sensor is installed to measure the distance of the connected bar in the measuring device which is designed by using theory of mechanism. The signal analysis is conducted by microprocessor as an analysis tool for detecting respiration rate. By using this method, we test five subjects with clothes on and without clothes on. The test results show that our proposed method can successfully detect respiration rate with minimal constraints. 24. SRAM Read Stability and Write Ability Metrics in the Aspect of Accurate Yield Estimation with Supply Voltage Scaling in 22nm FinFET Based SRAM Hanwool Jeong, Younghwi Yang, Junha Lee, Jisu Kim, Seong-Ook Jung (Yonsei University, Korea) The read stability and write ability metrics are investigated

by Monte Carlo simulation to check whether the cell failure rate can be estimated through the metrics even under a low voltage condition. The problems of the metrics with decreasing supply voltage are demonstrated. It is concluded that an accurate estimation for cell failure rate cannot be performed any more with the existing metrics. 25. An Indirect Contact ECG Monitoring with High Value Input Impedance Ee-May Fong, Heung-Sub Shin, Wan-Young Chung (Pukyong National University, Korea) An indirect contact ECG monitoring system with wireless data transmission feature is presented. Whereas, static electricity charge from external environment accumulates on the coupling capacitance affects signal quality significantly. Specifically, an extreme large value input biasing resistor is added between non-inverting input and circuit ground to reduce static electricity charge caused by environmental factor. Signal noise has been reduced significantly with the above mentioned technique and experimental result is presented. 26. Self-gated Spiral Cardiac MRI Robust to Gradient Offset Field Jinho Park, Chang-Beom Ahn (Kwangwoon University, Korea) A method to find accurate phase of cardiac motion is proposed from measured data when a high offset in the magnetic field exists using a spiral trajectory. Since the interleaved spiral trajectory in the k-space always starts from dc, the self gating or retrospective gating can be easily implemented. If there is an offset in the magnetic field, the measured dc may not be the true dc, which may provide wrong cardiac phase information. In the proposed technique, peak signal within each segment of data is searched for, and the rotational angle between the adjacent interleaves is set as 2π/VPS, where VPS is the number of views per segment, so that the true dc can be better estimated. From several data set, the proposed technique finds more accurate trigger time with a gradient offset compared to conventional techniques. 27. Machine Learning to Predict Diabetic Retinopathy without Fundus Examination Ein Oh, Taekeun You, Samin Hong (Yonsei University, Korea) Early detection of diabetic retinopathy is critical in preventing blindness worldwide. However, due to diabetic retinopathy is asymptomatic in early stages, the frequency of eye exams remains low even in developed countries. In this investigation, we applied the machine learning theory to predict the presence of retinopathy in diabetic patients using blood and urine test values obtained from KNHANES 2009. We compared the performance of various methods including support vector machine, artificial neural network, linear regression, and alternative decision tree. As a result, support vector machine using Gaussian kernel showed the greatest AUC (0.843). It had 80.1% of sensitivity, 83.3% of specificity, and 82.8% of accuracy for diabetic retinopathy detection.

51

28. WPAN Protocol design for 3-Lead ECG Ju-Young Kim, Jun-Seong Kim, Jin Cha, Jae-Won Lee, Sang-Sun Lee (Hanyang University, Korea) Purpose of this paper is to provide 3-Lead Electrocardiogram (ECG) information using Wireless Personal Area Network (WPAN) technology. Firstly, we derive minimum requirements for WPAN Protocol design through research related to 3-Lead ECG technology. Secondly we define WPAN Protocol through derived minimum requirements. And lastly we evaluate protocol performance by implementation. 29. Edge-preserving Compression of License Plate Image using Its Bimodal Characteristic Sung Soo Hwang, Sung-Eun Hong, Seong-Dae Kim (KAIST, Korea) Edge information of a license plate image plays an important role in segmenting and recognizing characters in a license plate. By using the bimodal characteristic of a license plate, we propose an edge-preserving compression method of a license plate image. Our method can be applied to the license plate recognition system where a camera only detects a license plate from an input image, and the server segments and recognizes the characters in the transmitted license plate image. Experimental results show that our method preserves edge information more than the conventional 2D image encoder. 30. The Development of Image Acquisition and Processing System of Confocal Microscopy for High Content Screening Kuk Won Ko (Sunmoon University, Korea), Min Young Kim (Kyungpook National University, Korea) Laser Scanning Confocal Microscopy (LSCM) is an essential machine for a wide range of investigations in the biological and medical sciences to image thin optical such as living cells, proteins, antibodies etc. To develop the LSCM for High Content Screening (HCS), we have built the new image acquisition system, which can simultaneously capture image data of four channels of Photo-Multiplier Tube (PMT) with high speed of frame as 30x4 fps. The cell in the acquired image is to count and analyze cells. 31. UVC/UVA LED Sterilization Module and Characteristics Hyung-do Yoon , Kwang -Hyeon Baik, Jin-wook Kim, Jae-Hyoun Park (Korea Electronics Technology Institute, Korea), Byung-Hon Song, Seog-jae Lee, Dong-Ho Shin (Smart Light Technology, Inc., Korea) Ultraviolet (UV) light-emitting diodes (LEDs) are harmless to the environment, highly reliable, and long-lasting when compared with the conventional UV lamps for germicidal purpose. In this study, we fabricated an UVLED sterilization module with the wavelengths of 265 nm and 375 nm, and performed the germicidal effects for home bacteria and viruses.

32. Effect of Coupling Medium on Radar-Based Microwave Breast Imaging Sollip Kwon, Seungjun Lee (Ewha Womans University, Korea) Microwave imaging is a promising method for early-stage breast cancer detection. It is based on the large contrast of electric parameters between tumor cells and normal breast tissues.[1] In this paper, we analyzed the effect of coupling medium on radar-based microwave breast imaging with different morphology of breasts. Two types of breast models were simulated with two antenna configurations. The simulation results show the coupling medium doesn’t have much effect on the image quality when its electric parameters are properly adjusted. FA2: Communication Systems and Networks Friday, Feb. 3, 2012, 10:40-11:55 Hambaek 1

Chair: Taewon Hwang (Yonsei University, Korea) 1. Characteristics of Marketing in Telecommunication’s Service Tursunov Sherzod Abduqodirovich, Toirova Mubina Akhmadjanovna (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues developing marketing in telecommunication sphere. A society stands on a top of the mission. Improving infrastructure of citizens considered an important task of marketing. Government management also affects to marketing process as well. Operation staff is the main part of the executors, as they are responsible to get revenue, to function effectively and to develop company in future. In other hand, consumers’ satisfaction from telecommunication services plays a big role in this activity. 2. Development of Telecommunications Market in the Economy of Uzbekistan Yusupov Qudrat Mukhammadqodirovich, Turdiev Farrukh Olimovich (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues developing telecommunications market in the economy of Uzbekistan and will go through the conditions and steps to reach a better productivity in this sphere. Working out of strategy of development of telecommunication services should be carried out as a component of strategy of information at various structural levels of national economy which, in turn, should consider existing and potential requirements of management, requirements of enterprise activity and influence of social processes in a society. 3. Development Level of Mobile Network in Uzbekistan Ravshanbek Tulyaganov (Tashkent University of Information Technologies, Uzbekistan) Development level of mobile network is discussed in this paper. Situation in global market, development of mobile

52

network in different are considered. Some information about services is given. Market share of mobile network of the Republic of Uzbekistan is discussed. Also, development history of mobile operators of Uzbekistan is shown. Conclusion considering further development of mobile network is formulated. 4. A Low-Complexity Turbo Detection for MIMO Transmission Jin Ren (North China University of Technology, China), Seokhyun Yoon, Cheon Won Choi, Sungil Bang (Dankook University, Korea) Turbo detection for multi-input multi-output (MIMO) transmission is investigated based on a lowcomplexity, soft-out MIMO detector with a priori information feedback. As shown in the simulation result, one can obtain considerable improvement with only a few detection-and-decoding iteration for MIMO transmission with convolutional coding. 5. Fast Multipath Generation Method for Underwater Acoustic Communications Networking System Simulation Hyeong-Won Jeon, Jeong-Min Ryu, Heung-No Lee (GIST, Korea) In underwater acoustic communications networks, channel modeling is one of important issues. In particular, distance calculation is an essential part. In this paper, we propose equations to calculate distance of the reflection path. Multipath generation via the proposed method shows exactly same result with the geographical ray tracing method with benefits of low complexity. 6. A Simulation Study for Understanding Energy Consumption in EPON and GPON S.H. Shah Newaz, JunKyun Choi (KAIST, Korea), Khalil Laghari, Gyu Myoung Lee (Telecom SudParis, France), Jung Yun Kim (ETRI, Korea) In this paper, we simulate the sleep mode management introduced by Ren et.al for Ethernet Passive Optical Network (EPON) and Gigabit Passive Optical network (GPON). For simulation purpose, we have used C++ discrete event simulator. We present different results which are needed to understand for proper sleep mode management in EPON or GPON. FB2: IT-Convergence Friday, Feb. 3, 2012, 10:40-11:55 Hambaek 2

Chair: Jundong Cho (Sungkyunkwan University, Korea) 1. Ways of Improving Marketing Communications in JSC “Uzbektelecom” with the Help of Foreign Experience Sindarov Sherzod Egamberdievich (Tashkent University of Information Technologies, Uzbekistan)

In this paper, we consider issues and ways of improving marketing communications in JSC “Uzbektelecom” an example of “Bukhara Telecom” branch». There is no doubt that we are in the middle of communications revolution that will deeply affect our lives, our teaching, and our students. We have available to us at a keystroke the libraries, schools, and people of the world. Fairly soon, many people will be able to access unimaginable resources of entertainment and professional edification right from home. As more people start to use the communicational bonds, ways will be found to make it simpler to use and even more impressive as a repository of knowledge and ideas. 2. Development Level of Communication and Information Sphere of Uzbekistan Bobomurodov Khurshid, Radjabov Ozod (Tashkent University of Information Technologies, Uzbekistan) Development level of communication and information sphere of Uzbekistan is discussed in this paper. Some information about mobile network, telephone network and Internet is given. Main results of the sphere till 2011 are given. Also, conclusion considering development of electronic document circulation system is formulated. 3. Prospects of Improving Economic Efficiency of Post Communication Services with the Help of Information and Communication Technologies Juraev Laziz Norovich (Tashkent University of Information Technologies, Uzbekistan) In this paper, we consider issues developing postal service in Uzbekistan and providing customers with high quality services with the help of the ongoing modernization process, which meets the growing customers’ demands and needs. These efforts have as main goals the satisfaction of the customers and the ensuring of the quality of postal items handling according to the UPU standards. 4. Economic Efficiency of Use of a Corporate IP-telephony Yusupov Qudrat Mukhammadqodirovich, Nurimova Kamola Ismailovna (Tashkent University of Information Technologies, Uzbekistan) In this article we consider advantages and ways of developing IP-telephony systems and the paper is intended to show the right strategies of improving concerning technology to raise the efficiency. 5. A Music Recommendation System Based on User’s Surroundings Sun-jun Lee, DaeIn Choi, Hyun K. Kahng (Korea University, Korea) With Smart phones, saved audio files or through applications offered by music service companies, user can listen to music. These kinds of activities are actually passive. In this paper, it actively offers a system providing user music to fit current location, weather, condition and etc.

53

away from a passive system mentioned earlier. This system consists of three different modes, and through this procedures, it make easy and comfortable for users to listen to music. FC2: CAD and Modeling Friday, Feb. 3, 2012, 10:40-11:55 Hambaek 3

Chair: Chang D. Yoo (KAIST, Korea) 1. Performance Comparison between CNTFET and MOSFET Based SRAM Cell in Sub-threshold Region Haejun Chung, Haiqing Nan, Ken Choi (Illinois Institute of Technology, USA) Since the MOSFET based SRAM cell design has various challenges to be scaled down further, the CNTFET based SRAM cell is becoming one of the new solutions for scaled device. In this paper, investigations and comparisons between the performance of CMOS-based and CNTFET based circute are conducted for SRAM benchmark circuit with 32nm technology node. Simulation results show that CNTFET based circute is able to operate in deep sub-threshold region while CMOS based circuit has limitation when the supply voltage is scaled down. 2. Architectural Web Object Model Jin-hong Kim, Young-seok Han, Yong-wan Koo (Center for Smart Address Standardization, Korea) In general, conceptual object models provide various manage to the complexity of the model corresponding to the object system. For this reason, concept of object, so called web object, afford to full computational power and network interface. Many has thought of object oriented web in which web applications are designed by object model, such as tools, ORM, UML, Semantic Object Model in some cases. Objects can be a platform to make logical or inductive inferences as well as give a new way of web computation that is modular, autonomous, and robust with resource level domain names and the object models. The reasons, Architectural Web Object model (WOM) can capture more meaning of an application environment and provide richer data structuring capabilities. The research project presented in this paper aims: (1) assist understanding and documentation architectural web object model conceptual data model and (2) present the description for Architectural Web Object Model. 3. An Approach to Model Intentions Based on Basic Human Needs YoungCheol Go, Gee Pyeong Han, Kyo IL Chung, Myung-Ae Chung (ETRI, Korea) This paper presents how to model user's intentions for intelligent services. Human has some intentions when they do something. Therefore, if devices including home appliances and service robots could catch user's intentions before providing services, they could do much more suitable services to users. A lot of researches related to user intention

have focused on user's actions because people do their actions with intentions and their actions have their own intentions. However, it's very difficult to detect user's intentions because they are not explicitly expressed and some actions looked similar would be different from intentions of them. In this paper, we model user's intentions with basic human needs and integrate intention models with service models. Therefore, we present one way to provide intelligent services using intentions. 4. Development of Lower body model for International Standard in Surgical Navigation System for Total Knee Replacement K. Y. Shin, S. O. Jin, T. B. Lee, S. J. Lee (Korea Electrotechnology Research Institute, Korea) Generally surgical equipments could be core equipment for disease treatment in medical field. Presently, international standards in medical equipments have been developed by IEC/TC62. This committee has been standardized for surgical equipments such as high frequency surgical equipment, diagnostic laser equipment, and ultrasonic surgical systems. However these standards were not considered about surgical navigation system which is core equipment in modern surgery. In this study, a lower body modeling for international standard was developed. 5. A New Effective Legalization Method for Mixed Size Cell/Macro Placement Yu Wang, Iksoon Lim, Hyunchul Shin (Hanyang University, Korea) Legalization is one of the most critical steps in modern placement of integrated circuits. Circuits consisting of millions of macros and cells have to be aligned without any overlap to the rows and/or to columns of a chip after placement. Previous greedy legalization methods legalize one cell/macro at a time. We propose a new candidate location decision method in which local placement congestion is considered during legalization. The experimental results show that this method can improve the legalization results. The total wire-length is reduced by 4.5% and the total displacement is reduced by 19.8% when compared to a well-known previous method. Poster 5: Security Signal Processing Friday, Feb. 3, 2012, 10:40-11:55 Lobby, 5F

Chair: Sungjea Ko (Korea University, Korea) 1. Fast Alignment Method for Side Channel Analysis System Juhan Kim, Dooho Choi (ETRI, Korea) In this paper, we propose a new alignment method which is used to align traces such as power waves and electromagnetic (EM) waves emanating from a device during a cryptographic computation that leaks sufficient information for an attacker for to reconstruct the secret key.

54

It provides similar alignment quality but has very fast performance speed compared to existing alignment methods. 2. A Password Recovery System Using Multiple GPU Nodes in Parallel Sang Su Lee, Do-Won Hong, Soon Ja Kim (ETRI/KNU, Korea) We describe the password search system which uses multi-GPU nodes connected via network communication with the control node. In this manner, the performance for searching a correct password of the encrypted target file is accelerated. The improvement of the performance may be due to the doubly parallelized architecture of the system. Finally, the test results of the system are given to prove our system’s linearly increasing performance according to the number of the work nodes. 3. A Collaborative Inference Scheme Based on Context-sharing among Smartphones Jang-Ho Choi, Ho-Chan Jo, Ming-Wei Chung, Taehun Kim, S. Hyun (Korea Advanced Institute of Science and Technology, Korea) In this paper, we introduce a smartphone-based collaborative inference scheme. It allows a context-aware application to autonomously share the context information with neighboring phones and recommends proper situational user activities. By sharing contexts (i.e., states and activities) of multiple users nearby, the inference result becomes more accurate for the individual users. We have designed a set of rules to assign different weights to the context values that are referred from neighboring users. In our experiment, we show the feasibility of the proposed scheme. 4. A New Method for Matching Feature Points in Stereo Images Jin Wook Park, Yong Tak Kim, Young Shik Moon (Hanyang University, Korea) This paper proposes an improved method for matching feature points in stereo images. In order to boost up the speed of matching, we filter interested points by limiting a length of width and height of position of points and use an integral image for a low computation. And we use 2 steps matching because of improving an accuracy. In the first step, we try to calculate the similarity between total blocks and next step between each 3x3 blocks. In experiment, the accuracy of the proposed method is higher than the conventional method. And the execution time is faster than the conventional method. 5. Shadow based Hand Gesture Recognition System Sooyeon Kim, Joongrock Kim, Jinkyu Hwang, Yuseok Ban, Sangyoun Lee (Yonsei University, Korea) Recognizing person’s hand gesture has been one of the most important issue in human computer interaction(HCI). Especially for the presentation, projectors and computers are

main appliances for most of presentation systems. We propose a hand gesture based presentation system, which consists of a camera, a projector, and a computer. With the system, a presenter easily controls the presented contents with hand gesture in real time. The system is experimented with 5 data sets obtained from consumer webcam. With three different hand gestures, recognition performance achieves 91% on the average for 5 data sets. 6. Skin Detection Method Based on Local Luminance and Illumination Compensation in Adult Images Min Su Park, Ki Tae Park, Young Shik Moon (Hanyang University, Korea) Although there have been studied many methods for skin detection using various color features and threshold techniques, they have some problems such as high time complexity and inaccuracy of results. Therefore, in order to effectively detect skin regions, we propose a new approach for skin detection based on local luminance and illumination compensation in adult images. The proposed method consists of three steps. Firstly, image enhancement using histogram equalization is performed for reducing false detection caused by various luminance environments. Then, after dividing the enhanced image into 25 blocks, we calculate both a mean and a skewness of luminance from each block for the adaptive local binarization and distinguishing candidate skin regions from backgrounds. Secondly, an illumination compensation on L(luminance) channel is performed. Finally, we detect exact skin color regions. As experimental results, the proposed method has achieved more accurate performance of skin detection, compare with conventional methods. 7. Image Enhancement Method for Target Segmentation in the Irregular Intensity Values by Using a Center Weighted Image Yong Min Kim, Chan Woo Park, Ki Tae Park, Young Shik Moon (Hanyang University, Korea) In this paper, we propose a novel method for image enhancement in the irregular infrared(IR) images. The proposed method is composed of three steps. In the first step, we generate an weighted image by using the distance information from the center position. In the second step, a modified top-hat transform is performed for eliminating backgrounds. Finally, we use Otsu method for object segmentation. Experimental result shows that the proposed method achieves better performance compare to conventional method. 8. Supplement Method to Improve Segmentation Performance of Normalized Cuts Algorithm Using Color Difference Information Hyung-Jun Park, Jong-Yeol Lee (Jeonbuk National University, Korea) The normalized cuts method is a kind of graph cut image segmentation algorithm. Segment the image with considering the association of inner graph. In common cases, to segment image, normalized cuts method uses brightness

55

information. But with the original method, in case of which image’s brightness information is similar in its entirety, N-cut method produces incorrect segmented result. In this paper, the method to solve this problem is proposed. We understand the characteristic of the image through the 'magnitude' value, which is the strength of edges. In case of which the image has little brightness difference information and much color difference information, we supplemented the information with U, V color components. The proposed method shows a better performance of segment than the original method based on the Berkeley segmentation dataset. 9. Block Based Fast Integral Histogram for Real-Time Applications JinYong Park, JungSu Park, Tae-Yong Kim (Chung-Ang University, Korea) In order to apply to the real-time applications and process it as a computer vision base, a fast and efficient tracking system is needed. The Integral Histogram can get the histogram fast but the initialize cost is too high, so the efficiency is low. We will suggest our methods on creating the integral histogram image based on blocks for accelerating initialize and a way to approximate the histogram. In addition, combining with particle filter, we will show how our methods are faster than the previous methods and substantially higher in the degree of accuracy as well. 10. Pedestrian Detection Using Saliency Map and Fuzzy Segmentation Seuk Gyo Suh, Jeisung Lee, Mignon Park (Yonsei University, Korea) Among advanced driver assistance systems (ADAS), pedestrian protection systems (PPS) have become a popular research area for traffic safety. In this paper, we propose for pedestrian detection using saliency map and fuzzy segmentation. The contributions are that we propose new saliency map using combined features and accomplish excellent foreground segmentation before object classification. 11. Correction of MRI Artifact due to Planary Respiratory Motion Eung-Kyeu Kim (Hanbat National University, Korea), Nohpill Park (Oklahoma State University, USA) In this paper, an improved post-processing method for correcting MRI artifact arising from planar respiratory motion is presented.. To estimate unknown motion parameters, we have applied the spectrum shift method to find the respiratory fluctuation function, x-directional expansion coefficient and x-directional expansion center and then the minimum energy method as an evaluation function has been used to find the y-directional expansion coefficient and y-directional expansion center. Finally, the validity of this proposed method is shown to be effective by using the simulated motion images.

12. An Implementation of Hierarchical Tile Based Rendering on Multi Core Multi Thread Environment Jang-seo Ku, Jong-il Park, Kwang-yeob Lee (Seokyeong University, Korea) As mobile computing technologies are developed, multi-core processors are introduced to the mobile devices. Multi-core, multi-thread systems require parallel processing software. In this paper, we propose an effective method of tile based rendering for a multi-core based GP-GPU environment. Tile based rendering is performing 3D Graphics by splitting the screen into tiles and processing each tile. The proposed algorithm is parallelized for multi-core environment. In conclusion, proposed tiling algorithm takes only 17.208 ms that is 42% of improvement compare to 29.614 ms in Multi-sort tiling. 13. A New Integral Image Memory Architecture for Memory Size Reduction Su-Hyun Lee, Yong-Jin Jeong (Kwangwoon University, Korea) The integral image is the sum of input image pixel values. It is mainly used to speed up processing of a box filter operation, such as Haar-like features. However, large memory for integral image data can be an obstacle in an embedded environment with limited hardware. Therefore, an efficient method to store the integral image is necessary. In this paper, we propose a memory size reduction method for integral image when implementing it in hardware. The method use four different image information: an integral image, a row integral image, a column integral image, and an input image. Using this method, integral image memory can be reduced by 42.6% on a 640×480 8-bit gray-scale input image. 14. Detection of Bruising Damages of Pear Using Hyperspectral Imaging Hong-Quan Dang, Inteak Kim (Myongji University, Korea), Byong-Kwan Cho (Chungnam National University, Korea), Moon S. Kim (USDA-ARS EMFS Lab, USA) Hyperspectral imaging an exciting technologies used in many practical fields. In agriculture, hyperspectral imaging is implemented in controlling fruit quality and analyzing specific crops in different estimated climate. Bruise damage is one of the factors that influence significantly quality of fruits. Detection methods are necessary to discriminate bruise parts of fruit in sorting process. In this paper, we combine hyperpectral imaging with a supervised classification algorithm to indicate bruise areas exactly with the shortest time. 15. An Improved Double Talk Detector Based on the Scale Factor Jae Ha Yoo (Hankyong National University, Korea) This paper presents an improved double talk detector based on the scale factor. A method of setting the detection threshold and time window is proposed. Computer simulation using real speech signals shows that the proposed

56

double talk detector outperformed the conventional double talk detector. 16. Comparison of Near-field Localization Methods for ULA : Beamforming and Hyperbolic Source Localization Sang Won Park, Hoondong Noh, Chungyong Lee (Yonsei University, Korea) We compare performance of the near-field localization methods: MUSIC and hyperbolic source localization. By considering computational complexity, we suggest a new reference point to choose a proper localization method according to given environment. 17. Single Channel Speech Enhancement Based on Adaptive Control Mechanism of Recursive Averaging Coefficients Sung-Yun Lee, Hong-Goo Kang (Yonsei University, Korea) This paper proposes a control algorithm of smoothing parameters to improve the performance of optimally modified log-spectral amplitude estimator (OM-LSA).The algorithm adaptively adjusts the parameters based on the characteristics of noise variation. The performance of the proposed method is evaluated with perceptual evaluation of speech quality (PESQ) in various noise environments. Experimental results show that the proposed algorithm has always better performance than the conventional approach. 18. Multi-modal Emotion Recognition using Arousal-Valence Classification Jung-In Lee, Jeung-Yoon Choi, Hong-Goo Kang (Yonsei University, Korea) This paper describes a multi-modal emotion recognition system using speech and image signals. Speech signals effectively detect emotions on the arousal axis, while facial expression can explicitly represent emotions on the valence axis. This study investigates a tree classification method which classifies arousal of emotion from the speech signal and the valence of emotion from the facial expression. Experimental results show improved performance compared to uni-modal and voting approaches for 4-class emotion recognition. 19. Wavelet-Based Intelligent Traffic Surveillance for Detection and Tracking of Moving Objects J. B. Kim (Seoul Digital University, Korea) This paper presents the intelligent traffic surveillance(ITS) system using a wavelet-based SVM and invariant feature. Our system consists of three steps: the object detection, which is the first step, detects the object candidate regions where pixel intensity changes occur due to object movement and based on the image difference analysis between two continuous frames. The second step is the object recognition, which recognizes the objects of interest from the detected object candidate regions using the SVMs. Then, during object tracking – the third step, the recognized objects is tracked using the waveletbased invariant features matching

bases to the recognized object. The presented system can be efficiently applied to real-time ITS applications for analyzing traffic flow. 20. Deinterlacing Algorithms Using Gradient Inverse Weighted Filtering Interpolation Xiangdong Chen, Yang Yang, An Wang, Jin Wang, Jechang Jeong (Hanyang University, Korea) This paper proposes efficient intra-field deinterlacing algorithm using gradient inverse weighted filtering interpolation method. Experimental results show that the proposed algorithm provides satisfied performances in terms of both objective and subjective image qualities. What is more, it just exploits the local spatial gradient information among the neighboring pixels without complex preset-conditions which has lower complexity than most of the existing algorithms. 21. Hybrid Motion Search and High-speed Reference Frame Selection Algorithm Seung-Hwan Jung, Woong-Jae Park, Tae-Yong Kim (Chung-Ang University, Korea) Video coding standard of H. 264/AVC adopted techniques such as variable block size coding, use of multiple reference frame and rate-distortion optimization. However, these methods of coding have the disadvantage of increasing complexity needed for motion estimation. Thus, in this paper, concerning the probability of MV within each reference frame, we seek to minimize reference frames depending on J cost, which is between the reference frame 0,1 and the same block. Also, this paper concerns how to minimize motion search points according to the size of Motion vector by the distance of reference frame. In the experiment results, when one uses five reference frames, the time used for estimation of the proposed scheme’s motion was reduced by 85% on average in comparison with the method of using motion estimation on all reference frames. Additionally, PSNR was somewhat decreased. We find that our proposed approach is effective for videos of rapid motions. 22. Analysis of Japanese Drama using Emotional Speech Recognition Sungho Kim, Chansu Lee (Yeungnam University, Korea) This paper presents an analysis of Japanese drama using emotional speech recognition. Recently, the attention of emotion recognition using speech information has been increased. MFCC feature with SVM classifier shows feasible performance for the emotion recognition of Japanese drama, 'Clouds over the hill.

57

23. Improvement of Trellis-Based Dynamic Programing Using Gaussian Filter Seongyun Cho, JeongMok Ha, Hong Jeong (Pohang University of Science and Technology, Korea) This paper presents an algorithm that uses Gaussian filtering to give more precise stereo matching than the existing trellis -based dynamic programing algorithm. The proposed algorithm uses a Gaussian filter and a convolution operation to use more pixel information. Our proposed algorithm is appropriate for real-time systems. 24. Fast Face Tracking with Motion Prediction Using H.264 Motion Vectors Tae-Ho Lee, Hyuk-Jae Lee (Seoul National University, Korea), Jin-Sung Kim (Sun Moon University, Korea) Face detection requires extensive computation to investigate all possible positions and sizes of a face in an input image. In order to reduce the computational complexity of face detection, this paper proposes a new algorithm which makes use of the motion vectors (MV) derived from an H.264/AVC encoder. As a result, the number of sub-windows is reduced only to an average of 271 which is less than 0.02% of the complexity required by the original Viola and Jones algorithm. 25. Global Color Balancing for Satellite Image Mosaicing Using Decorrelated Color Spaces Hansang Lee, Dewey Ho Lee, Heechul Jung, Junmo Kim (Korea Advanced Institute of Science and Technology, Korea), Myungjin Choi (Korea Aerospace Research Institute, Korea) Satellite image mosaicing is an important task to extend the usability of satellite imagery in vast practical applications. Due to the difference of viewpoints, luminance, time, and color discontinuities between adjacent images in satellite image mosaics were major problems in this area. To balance these color discontinuities among images is thus a valuable task and several automatic/semi-automated color balancing methods have been proposed in image stitching and stereo imaging recently. In this paper, we propose a global color balancing method for satellite image mosaic using conditional expectation estimation based on color mapping information from overlapped region of stitched satellite images. Experimental results from satellite images and general real images are provided for performance evaluation. 26. Initial Foreground Extraction for Fast Segmentation in Multiple Views Kyung Hyun Paeng, Sung Soo Hwang, Seong-Dae Kim (Korea Advanced Institute of Science and Technology, Korea) In this paper, we present a method for extracting the initial foreground regions by using a check pattern background for fast segmentation in multiple views. In the novel background, we can obtain the initial foreground regions that contain the actual foreground regions. It should facilitate fast silhouette extraction for 3D object reconstruction. Experimental results show that it obtains the initial foreground regions which contain the actual

foreground regions. 27. Development of Image Focusing System Based on Confocal Theory Hoang Van Giang, Kuk Won Ko (Sunmoon University, Korea), Min Young Kim (Kyungpook National University, Korea) Focusing cameras is an important in computer vision. Due to the limited depth of field of optical lenses in CCD camera devices, there are sensors which cannot generate images of all objects at various distances with equal sharpness. In this paper propose an algorithm to generate one multi-focus image from confocal theory about the effect of each wavelength of the light to depth of focal when pass through objective lens and faster focusing image detector by confocal theory about geometrical matching of two conjugate focal points corresponding to both the object surface and the point detector defined by a pinhole. Each wavelength of the light will be obtained a focus image at different position on object plane, combination of focus images are collected by each wavelength will be combined to build a best focus image. 28. A Study on Interference Analysis under NCW Environment with GIS K.W. Suh, J.S. Jang (Kangnam University, Korea), C.W. Lee, I.S. Shin, Y.C. Jeon (Agency for Defense Development, Korea) By using Rec. ITU-R P.1546 and geography information system, we present the results of field strength, optimum path, and interference analysis under a netcentric warfare environment. To show the suggested method, virtual geography information data are generated, and interference analysis is also conducted between radar and fixed wireless system for a virtual co-channel band. 29. FPGA Implementation of Confusion-Line Separation based on Color Segmentation for CVD Jongho Choi, Jinsan Park, Dongil Han (Sejong University, Korea) This paper proposes FPGA implementation of confusion-line separation based on color segmentation for color vision deficiencies (CVD). It constructed the 512 virtual boxes in RGB color space, and extracted the space information on the same confusion line. Through the region growing method, it divided the independent region after the grouping with the adjacent pixels which have the similar color information using hue information of image. Finally, it check the whether the segmented regions existed on the same confusion line, and performed the color transformation in LAB color space to make the adjacent all of pixels are placed on the other confusion line. So it offers the best color distinction effectiveness for CVD. To verify and implement, we was conducted in various environments using test image for color-blindness by S. Ishihara and QVGA camera, Virtex5 LX330 FPGA board. Consequentially, the developed color compensation for CVD showed that it is possible to compensate in real-time processing.