Guide Puneetha.M Lecturer dept of cse

Smart quillSmart quill

ByReshma.K.R4GW07CS063

CONTENTS

1)INTRODUCTION2) WORKING3) FEATURES4) APPLICATIONS 5)ADVANTAGES 6)DISADVATANGES 7) CONCLUSION 8) REFERENCE

INTRODUCTION

Smart quill was invented by Lyndsey Williams of Cambridge University along with British Telecommunications.

Smart quill is a pen, which remembers the words that writes and then transfer them into computer text.

Smart quill contains sensors that records movement by using by using earth’s gravity irrespective of the platform used

WORKING

Smart quill works by measuring the pen’s movements and matching them to the movements that produce the words andletters programmed into its memory.

User can enter information into these pens by simply pressing a button and accelerometers are used to sense the movements of the pen using earths gravity system

FEATURES

DISPLAY SCREEN

The text written can be read on a tiny screen on the side of the pen and it has a light at its tip which allow the user to use it even dark

HANDWRITING RECOGNITION AND SIGNATURE VERIFICATION

User can train the pen to recognize particular handwritingIf someone else picks your Smart Quill and tries to write with

it- it won’t

HANDWRITING RECOGNITION AND SIGNATURE VERIFICATION(contd…)

There are two techniques used for this purpose• Accelerometer Technology • Handwriting recognition Software

ACCELEROMETER TECHNOLOGYThis technology uses a device called Accelerometer which is

used for measuring motionA tiny accelerometer in a pen could be used to detect the stops

and starts, arcs and loops of handwriting, and transmit this information to a small microprocessor that would make sense of it as text.

ACCELEROMETER TECHNOLOGY

Two types of accelerometer

1)Two axes accelerometer:- measures acceleration in two axes. ex..ADXL202 accelerometer

2)Three axes accelerometer:-measures acceleration in three axes. ex..tronics +/-2g

HANDWRITING RECOGNITION SOFTWAREThis software embedded in the microprocessor of the pen is

used to recognize handwriting of the user. Two phases in handwriting recognition

Handwriting transcription

Handwriting recognition

HANDWRITING TRANSCRIPTION

In this phase, the recorded acceleration signals are then transcripted to it’s original form.

MethodFirstly, we have to know pen’s spatial orientation.Secondly, we have to succeed in the double integration.

PROTOCOL

Fig. represents the acceleration signals recordedFig. represents the acceleration signals recordedwhile one is writing a small capital Bwhile one is writing a small capital B

Transcripted signal

HANDWRITING RECOGNITIONIn this phase the characters and signatures are

recognized. methodWe use a simple Euclidian distance as the comparison process, and of course the decision process is the smaller distance found

PROTOCOL

In Fig , we can see the accelerometers signals recordedIn Fig , we can see the accelerometers signals recorded during Yanis signing processduring Yanis signing process

DISPLAY SCROLLS USING TILT SENSORS

By tilting the pen user can chose applications and scroll through without using scroll buttons

This is done by using Micro Electro-Mechanical Systems(MEMS) tilt sensors to measure tilt angle with earth

COMMUNICATION WITH OTHER DEVICES

The current prototype hooks up to the PC via a cable and electronic docking station called as “inkwell “

Future models can receive email and pager messages via a wireless messaging system.

MEMORY

It uses 4MB EEPROM . Up to 10 pages of notes can be stored locally on the pen

memory. The data is stored in the pen locally until it is copied to the

Personal Computer

POWER

Smart quill works on AAA(Antiaircraft Artillery Battery) battery. It can continuously work 25 hrs with a single AAA battery

The pen has automatic on/off system.

ADVANTAGES“Spatial sensing system”Intuitive user interfaceSecurity3D mousePower savingSmart quill is all mobile

DISADVANTAGESIt has accelerometer errors.It is inconvenient for persons with handtremors.Bigger size than a normal pen.Errors are introduced in the system due to

thermal variations in the spring

APPLICATIONS 1. Replace keyboard with SmartQuill

2. Input to other devices3. Handheld computer applications4. The wireless messaging system which allows two way communications

5. Supports speech recognition. 6. Third party to add on applications

CONCLUSIONThe estimated cost of this futuristic pen is only

$100. SmartQuill is convenient for use. Keyboards become so tiny you require needle-like

fingers to operate them and screens that need constant cursor controls to read simple text. The introduction of SmartQuill is the best solution for this

REFERENCES

R.Baron, R. Plamondon, ³Acceleration measurement with an instrumented for sign verification and handwriting analysis´ , IEEE Trans .Vol IM-38

E.Millien, C.Roux, ³Users input to design of a ³communicating pen´, Smart Objects Conference, 2003

http://sites.google.com/site/sensecam/smartquill.www.smartquill.comhttp://www.mtl.mit.edu/researchgroups/MEngTP/

Graham_Thesis.pdfhttp://www.analog.com/static/imported-files/data

sheets/AD974.pdf