ewbs - 23 julio 2011 - interface specification for ewbs system

8/4/2019 EWBS - 23 JULIO 2011 - Interface Specification for EWBS System

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Interface Specification

of EWBS Serverfor Digital Terrestrial TV System

in Chile

July, 2011

NEC Corporation


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Interface Specification for EWBS System

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1. General

This document describes the interface specification between Emergency Agency and EWBSServer of digital terrestrial TV system in Chile.

MUX

Studio

(Chile)

Emergency

Agency

(Chile)HUB

HUB

MCT

A/D 1segENC1

HD/SD

ENC1

GPI

EditPC

Ethernet(100BASE-T)

DTX

HDsuper

SDsuper

1seg

super

StartFlag

AreaCode

(1) Emergency Information from Emergency Agency to EWBS Server

- GPI or Ethernet Interface

(2) EWBS Information from EWBS Server to Multiplexer

- Set of Start Flag in TMCC and Area Code in PMT to Multiplexer by Ethernet

- Send of HD, SD and 1seg. Character Super to Multiplexer by Transport Stream

(3) Composition List of EWBS Server System

- EWBS Server 1set- Edit PC 1set


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2. Interface Specification

Interface specification for EWBS server describes below.

(1) GPI (General Purpose Interface)

- GPI signal is received from Emergency Agency.- Below two services shall be executed by EWBS Server simultaneously.

Service Name Description

1 Emergency Broadcast Start flag of TMCC (ON/OFF) is sent to Multiplexer.

(via Ethernet)2 Emergency Character Super Character information which is preset by Edit PC is sent to

Multiplexer.

Latin Character Code refers to Chapter 3.2.

(2) Ethernet

- Emergency Information is received from Emergency Agency via Ethernet.

- Below three services shall be executed by EWBS Server simultaneously.

Service Name Description

1 Emergency Broadcast Start flag of TMCC (ON/OFF) is sent to Multiplexer.

(via Ethernet)

2 Area Code Area Code is sent to Multiplexer. (via Ethernet)

3 Emergency Character Super Character information which is preset by Edit PC is sent to

Multiplexer.

Latin Character Code refers to Chapter 3.2.

Edit PC has below functions.

Name of Function Function

1 Monitor of EWBS operation Status indication from Emergency Agency

2 Input of Character Preset of Character Super for GPI

3 Set of PID PID of HD, SD and 1seg. Service

4 Set of Interface Priority set between GPI and Ethernet

5 Set of health check Set of the duration of health check


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2.1 GPI

Flow chart

(1) In case of emergency condition, EWBS Server receives GPI (One of four contacts) fromEmergency Agency.

(2) Character Information is preset by the Edit terminal. (up to four kind of character info.)

(3) EWBS Server sends Start Flag to Multiplexer by Ethernet. EWBS Server sendsCharacter Super to Multiplexer by TS signal.


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2.1.1. Interface between Emergency Agency

MUX

Studio

(Chile)

Emergency

Agency

(Chile)

HUB

MCT

A/D1seg

ENC1

HD/SD

ENC1

GPI

Edit PC

Ethernet(100BASE-T)

DTX

HD super

SD super

1seg super

GPI Interface

Four contacts

Specification of GPI describes in chapter 3.1.


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2.2 Ethernet interface

Flow chart

HUB


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2.2.1 Interface between Emergency Agency

Emergency Agency is a server and EWB Server is a client. TCP/IP protocol is appliedbetween these equipment. Emergency information and character information are sent fromEmergency Agency to EWBS Server.


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Communication Sequence Between Emergency Agency and EWBS Server


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2.2.1.1. Request command of Emergency Flag ON/OFF and Area code

PositionByte

lengthData type Description

0-7 8 character REQ_CSWE

8-15 8 character (Hexadecimal of character)16 1 character 0: Emergency OFF, 1: Emergency ON

17- variable binary Area Code (1area = 2byte)Several kinds of Area Code can be sent.

Remarks:- Assignment of Area Code shall be defined by the digital TV committee in Chile.- Maximum Area Code is 1022byte. (511 areas)

2.2.1.2 Response command of Emergency Flag ON/OFF and Area code

PositionByte

lengthData type Description

0-7 8 character ANS_CSWE8-15 8 character (Hexadecimal of character)

16 1 character Send of current condition0: Fault, 1: Succeed

17- variable character Send of the Error Message at Faulty Condition


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2.2.1.3 Request command of character super output

Position Bytelength Data type Description

0-7 8 character REQ_CMSP

8-15 8 character (Hexadecimal of character)16 1 character 0:OFF, 1:ON17- variable character Character Super (In case of ON)

Remarks:- Maximum Character Super is up to 1023 byte.

2.2.1.4 Response command of character super output


0-7 8 character ANS_CMSP

8-15 8 character (Hexadecimal of character)16 1 character Send of Current Condition

0: Fault, 1: Succeed17- variable character Send of the Error Message at Faulty Condition

Remarks:- Maximum Error Message is up to 1023 byte.


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2.2.1.5 Request command of health check


0-7 8 character REQ_HEAL8-15 8 character 00000000 (Hexadecimal of character)

Remarks: Duration of command is 60seconds.

2.2.1.6 Response command of health check


0-7 8 character ANS_HEAL8-15 8 character REQ_HEAL (same as the request command)16- variable character Send the message


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2.2.2. Interface with Multiplexer

MUX

Studio

(Chile)

Emergency

Agency

(Chile)

HUB

MCT

A/D1seg

ENC1

HD/SD

ENC1

GPI

EditPC

Ethernet(100BASE-T)

DTX

HDsuper

SDsuper

1segsuper

Specificationof

Interface

Multiplexer is a server and EWB Server is a client. TCP/IP protocol is applied between theseequipment. Start flag (Emergency broadcast ON/OFF) and Area code are sent from EWBSServer to Multiplexer.

EWBS Server always connects with Multiplexer.


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3. Appendix

3.1 GPI specification

3.1.1 Circuit Diagram of GPI input

Circuit diagram of GPI input is shown below.

Photo-coupler

VCC

Circuit

GPI Input

GND GND

3.1.2 Circuit Diagram of GPI output

Circuit diagram of GPI output by Chile side is shown below.


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3.1.3 Specification of Connector

5 1

9 6

Pin No. Signal Description

1 OUT1

Power Alarm

MAKE : Power ON condition (Normal)

BREAK : Power off (Error), Both or one power supply is down.

2 OUT2

CPU board alarm

MAKE : Alarm

CPU board error or red indication of front panel.

3 OUT3

Application Error

MAKE : Alarm

4 OUT4Tally output of Character Super (1second pulse)

MAKE : Make of 1 second after the output of character super.

5 GND Ground6 IN1 Character Super-1

7 IN2 Character Super-2



Remarks:IN 1 to 4 are the pulse signal inputs. Duration of pulse is required minimum 100msec.


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3.2 Latin Character Code

ISO-8859-15

x0 x1 x2 x3 x4 x5 x6 x7 x8 x9 xA xB xC xD xE xF

0x NUL SOHSTX ETX EOTENQACKBEL BS HT LF VT FF CR SO SI

1x DLE DC1 DC2DC3 DC4 NAKSYNETBCAN EM SUBESC FS GS RS US

2x SP ! " # $ % & ' ( ) * + , - . /

3x 0 1 2 3 4 5 6 7 8 9 : ; ?

4x @ A B C D E F G H I J K L M N O

5x P Q R S T U V W X Y Z [] ] ^ _

6x ` a b c d e f g h i j k l m n o7x p q r s t u v w x y z { | } ~ DEL

8x PAD HOPBPHNBH IND NEL SSAESAHTS HTJ VTS PLDPLU RI SS2 SS3

9x DCS PU1 PU2 STSCCH MW SPA EPASOSSGCI SCI CSI ST OSC PM APC

Ax NBSP

AxNBSP

Bx

Cx

Dx

Ex

Fx

Remarks: Reference by Wikipeda ISO 8859-15


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3.3 Area Code in Japan

- Data length : 2 byte

- 12 bit + 4 bit (spare)- 5 wide area- 47 prefecture

ewbs - 23 julio 2011 - interface specification for ewbs system

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