Emergency Warning System for Broadcasting · 1,1985† Start of EWS in Japan zMar.18,1987 First EWS operation for tsunami warning ... Emergency Warning System for Broadcasting in

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DiBEGDigital Broadcasting Experts Group

ISDB-T Seminar

Emergency Warning Systemfor Broadcasting

28th. February – 1st. March, 2007Jakarta , Indonesia

Kenichi TSUCHIDA(NHK)

DiBEG JAPAN

Presentation 5

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ISDB-T Seminar

Remote activation of Radio & TV ready for EWSRemote activation of Radio & TV ready for EWSAM, FM Radio & TV : Control and Alert SoundAM, FM Radio & TV : Control and Alert SoundDigital Broadcasting (ISDBDigital Broadcasting (ISDB--T) : Emergency Warning Control FlagT) : Emergency Warning Control Flag

EWS has been operated since September 1985 in JapanEWS has been operated since September 1985 in JapanTest signals are monthly broadcast in JapanTest signals are monthly broadcast in Japan

Broadcasting Station Transmitter Broadcasting Service Area

Automatic Automatic ActivationActivation

EWSMeteorological Agency

Alert

Emergency Warning System for Broadcasting

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ISDB-T Seminar

1. Functions of broadcasting in disaster management2. EWS for broadcasting - History3. EWS for analogue broadcasting4. EWS for digital broadcasting5. Conclusion

Emergency Warning System for Broadcasting

Contents

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ISDB-T Seminar

Gathering/receiving disaster information from administrative organizationsFiltering informationDelivering disaster information to the general publicBroadcasting offers reliable informationThere are no “spam” information in broadcastingAlways connected to everybodyThere are no congestions like in communication Always active : 24 hour operation

Broadcasting is a ideal media to deliver disaster information

1-1. Functions of Broadcasting in Disaster Management

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ISDB-T Seminar

206 points all over Japan

00:01:00

00:02:00

00:03:00

・・・・・

Earthquake

1-2. Functions of Broadcasting in Disaster Management

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ISDB-T Seminar

1980 Start of EWS studySep. 1,1985† Start of EWS in JapanMar.18,1987 First EWS operation for tsunami warningJan.13,2007 Latest EWS operation for tsunami warningUp to now 15 times EWS operation during 20 years

† On Sep. 1, 1923, a big earthquake attacked Tokyo area and more than 100 thousand people died. It became a trigger to start radio broadcasting in Japan. Sep. 1st is the day of disaster prevention in Japan.

2. Emergency Warning System for Broadcasting in Japan - History

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ISDB-T Seminar 3-1. EWS for analogue broadcastingTransmission and Reception

SwitchTrans-mitterProgram

signal

Controlsignal

generator

Program signal

reception

Control signal

reception

Control

Broadcasting station Receiver withwarning function

Radio

TV

Alarming sound,followed by

announcement

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ISDB-T Seminar

Receiver with a Clock

Portable AM/FM Receiver

Receiver withPower on switch

・・・・・were not cost effective ($60 - $130)

3-2. EWS for analogue broadcastingConventional Receivers

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ISDB-T Seminar

Compact Discin which

EWS signalsare recorded

ConventionalReceiver ($2)

EWS AdaptorIC* parts: ($1)

Speaker

Enough for sending EWS

Enough forreceiving EWS

*TI MSP430

3-3. EWS for analogue broadcastingLow cost EWS implements

Conventionaltransmitter

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ISDB-T Seminar 4-1. EWS for Digital BroadcastingISDB-T One-Seg Services　

Fixed Reception(HDTV)

MobileReception

Internet

ISDB-T

A channel slot divided into 13 segments12 segments for HDTV services1 segment for mobile / portable servicesBoth services are simulcast now.

6 MHz

orHDTVSDTV x 2

or SDTV x 3

PortableReception

12 segments : Fixed Reception (HDTV)Throughput ：16.9MbpsModulation : 64QAM(r=3/4)Features ：HDTV & 5.1ch Surround Audio,

Multi-channel Services

1 segment：Mobile Portable ReceptionThroughput ：416KbpsModulation : QPSK (2/3)Features ：Robust for Mobile Reception

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ISDB-T Seminar

FOMA P901iTV

Portable DVD playerLaptop Computer

4-2. EWS for Digital Broadcasting ISDB-T One-Seg Terminals in the Market

SoftBank 905SH

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ISDB-T Seminar

EWS for ISDB systems have already been in operation in Japan as well as analog broadcastPortable EWS receivers for ISDB-T are now under developmentPortable receivers are expected to enlarge the opportunity to relieve disaster Technology for saving power consumption is the keyEWS should be prepared by other digital broadcasting systems

4-3. EWS for Digital BroadcastingISDB-T One-Seg Services　

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ISDB-T Seminar 4-4. EWS for Digital BroadcastingConcurrent mobile receiver activation using EWS　

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ISDB-T Seminar

seg

＃0(429kHz)

seg

＃11(429kHz)

seg

＃9(429kHz)

seg

＃7(429kHz)

seg

＃5(429kHz)

seg

＃3(429kHz)

Frequency

seg

＃1(429kHz)

seg

＃2(429kHz)

seg

＃4(429kHz)

seg

＃6(429kHz)

seg

＃8(429kHz)

seg

＃10(429kHz)

seg

＃12(429kHz)

Emergency

Warning

Signal

HDTV service (BW : 5.6MHz)

bit203

伝送制御信号bit26

bit0

ヘッダ Time伝送制御信号

ヘッダ

伝送制御信号

ヘッダ

Transmission and Multiplexing

Configuration Control (TMCC) Signal

Header

FrequencyOne segment service

(BW : 429 kHz)

Seg

＃0(429kHz)

seg

＃0(429kHz)

seg

＃11(429kHz)

seg

＃9(429kHz)

seg

＃7(429kHz)

seg

＃5(429kHz)

seg

＃3(429kHz)

Frequency

seg

＃1(429kHz)

seg

＃2(429kHz)

seg

＃4(429kHz)

seg

＃6(429kHz)

seg

＃8(429kHz)

seg

＃10(429kHz)

seg

＃12(429kHz)

Emergency

Warning

Flag

HDTV service (BW : 5.6MHz)

bit203

伝送制御信号bit26

bit0

ヘッダ Time伝送制御信号

ヘッダ

伝送制御信号

ヘッダ

Transmission and Multiplexing

Configuration Control (TMCC) Signal

Header

FrequencyOne segment service

(BW : 429 kHz)

Seg

＃0(429kHz)

4-5. EWS for Digital BroadcastingEWS signal allocation in ISDB-T

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ISDB-T Seminar

Remote activation of mobile terminals by EWS is Remote activation of mobile terminals by EWS is very effective.very effective.EWS bits in TMCC have to be always watched in EWS bits in TMCC have to be always watched in mobile terminals.mobile terminals.

The problem is power consumptionThe problem is power consumptionof mobile terminalsof mobile terminals

Power consumption saving is required during Power consumption saving is required during EWS standEWS stand--by modeby mode

4-6. EWS for Digital BroadcastingISDB-T One-Seg Services & EWS

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Silicon Tuner(100mW) and Demodutator(50mW) are always activeLife of a Battery(3.7V,800mAh≒3Wh) is only 20h(1 day)

　　　　　　　　　　　　　　　　　　　　↓

　　　　　　　　　　　More than 200h(8 days) would be required

SiliconTuner

One-SegDemod

One-SegDec/Disp

Activation Control

Receiving Antenna

100mW 50mW

One-Seg Portable Terminal

4-7. EWS for Digital BroadcastingConventional EWS stand-by

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ISDB-T Seminar

Silicon Tuner(10mW) and EWS bit detector(5mW) are active only for necessary durationLife of a Battery(3.7V,800mAh≒3Wh) improved to 200h(8.3 days)

Receiving Antenna

SiliconTuner

One-SegDemod

One-SegDec/Disp

EWS bitDetect

10mW5mW

ON ON

OFF OFF

Activation Control

One-Seg Portable Terminal

4-8. EWS for Digital BroadcastingSaving Power Consumption for EWS stand-by

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ISDB-T Seminar

5 “

3 “LCD: 2.5”

4-9. EWS for Digital BroadcastingOne-Seg Prototype Receiver ready for EWS with very low power consumption

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ISDB-T Seminar

Broadcasting is a ideal media to deliver disaster Broadcasting is a ideal media to deliver disaster information.information.EWS is a broadcasting system which remotely EWS is a broadcasting system which remotely activates Radio & TV ready for the system.activates Radio & TV ready for the system.EWS for analog AM/FM radio and TV has already EWS for analog AM/FM radio and TV has already been in operation in Japanbeen in operation in JapanPreparation for EWS toward digital broadcastingPreparation for EWS toward digital broadcasting

Remote activation of mobile terminals by EWS is very effective.Remote activation of mobile terminals by EWS is very effective.Power consumption saving is required during EWS standPower consumption saving is required during EWS stand--by mode.by mode.

5-1. Conclusion

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ISDB-T Seminar

Not onlyTsunami forecast

But alsoEarthquake forecastHurricane forecastFlood warningEruption warningFire warningOther warning

　　　　　　　　　　　　　　… Thank you for your attention !

5-2. Usage for EWS

Documents

Emergency Warning System for Broadcasting · 1,1985† Start of EWS in Japan zMar.18,1987 First EWS operation for tsunami warning ... Emergency Warning System for Broadcasting in