Activity of disseminating
Japanese EWBS technology( Emergency Warning Broadcast System )February 2021

Japan Telecommunications Engineering and Consulting ServiceISDB-T 20 countries

Japan
Honduras
GuatemalaPhilippines

Nicaragua

El Salvador

Venezuela

Costa Rica

AngolaEcuador

Sri Lanka

Peru

Maldives

Bolivia

Botswana

BrazilParaguay
Uruguay
Chile
Argentina

As of February 2020 Research by DiBEG■ISDB-T adopted■DVB-T/T2 adopted■ATSC adopted■DTMB adoptedThose countries which are facing the risk of natural disasters （Peru, Central American countries etc.)
have strong interest in EWBS introduction and expect a technical assistance from Japan.

About DiBEG

https://www.dibeg.org

PurposeDigital Broadcasting Experts Group (DiBEG) was founded
on September 1997 to promote ISDB-T, the Japanese
Digital Terrestrial Broadcasting System, in the world.
And also, DiBEG promotes the exchange of technicalinformation and international cooperation to facilitatecommon understanding for ISDB-T in the world.

Activities◆ Research of the trend toward digital broadcasting in theworld.
◆ Exchange of digital broadcasting technologies andfacilitation of common understanding.
◆ Technical assistance for the countries where ISDB-Thas been adopted.

Members (17)•••••••••••••••••ACCESS CO., LTD.
FUJI TELEVISION NETWORK, INC.
Hitachi Kokusai Electric Inc.
Japan Broadcasting Corporation (NHK)Japan Telecommunications Engineeringand Consulting Service (JTEC)MASPRO DENKOH CORP.
NEC Corporation
NHK Technologies, Inc.
Nippon Television Network Corporation
Panasonic Corporation
Sharp Corporation
Sony Corporation
TV TOKYO Corporation
TOKYO BROADCASTING SYSTEM, INC
TOSHIBA CORPORATIONTV Asahi Corporation
YACHIYO ENGINEERING CO., LTD.

Authors◆ Yasuji SAKAGUCHI : Director, Broadcasting Systems Engineering,JTEC (Japan Telecommunications Engineering and Consulting Service)◆ Yasuo TAKAHASHI : Advisor to DiBEG◆ Seiji SAKUMA : Senior Researcher, ISDB-T Promotion Group,ARIB (Association of Radio Industries and Businesses)

Outline
1. Advantage of EWBS with ISDB-T
2. Technical requirements on EWBS
in Latin American countries
3. Development of“EWBS Superimpose Dissemination System”
4. Current Status of EWBS Implementationin Latin American Countries

EWBS ecosystem & requirements⚫ Mass delivery⚫ Rapidity⚫ Understandability⚫ Universality⚫ Usability⚫ Reliability

EWBSequals to “Advantage of ISDB-T”

Why emergency information on broadcast network?

➢ One-way transmission
Traffic Congestion-free, Resistant to cyber security➢ Robust transmission➢ More coverage at remote place

Broadcast - Robust Transmitting Station
TokyoIzu-Oshima

Telecommunication failed
Electricity failed

Broadcasting kept transmission !
Devastated landslide by torrential rains hit Izu-Oshima, on 16 Oct. 2013

Broadcast - more coverage at remote place
In case of Peru--

Remote place

Populated place
Broadcast Network
250 transmitting stations

more than 2,000 relay transmitting stations
Wide coverage to every corner of the nation

Cellular Network
not completeISDB-T Hierarchical Transmission

One-Seg

Full-Seg

Robust “One-Seg” Transmission
One-Seg

Full-Seg

C/N reception condition : “One-Seg” has more than 10dB better than “Full-Seg”

1. Advantage of EWBS with ISDB-T
2. Technical requirements on EWBS
in Latin American countries
3. Development of“EWBS Superimpose Dissemination System”
4. Current Status of EWBS Implementationin Latin American Countries

Differences in requirements on EWBS
Main Operator

Japan
Broadcasters (all)Latin America
Government (National Organizationfor Disaster Prevention)

Concept of using
broadcast radiowaves

Target Areas
InformationdisseminatedMeans of delivering“broadcasters’ contents”

Means of delivering “nationaldisaster prevention information”ⓐ Nationwide ⓑ Regionalareasⓐ Early warningⓐ Nationwide, ⓑ Regional areasⓒ Local areasⓐEarly warningⓑ Information after the occurrence(Post-event information)
Public places (offices, firefightingstations, hospitals, etc.) and generalhouseholds
Various receivers for public / homeuse・Public signage / sirens, etc.
・TV receivers for home use

Target recipient

TV Viewers
in general households

Type of receivers

TV receivers for home use

Difference in EWBS Operation between Japan and Latin America
Japan

Latin America

Requirement of EWBS local operation

At a TV Transmitting Station inPeruvian Andes. This is a district
where 20,000 people died ofdrowning by devastating glaciers
flooding caused by the 1970
earthquake.
In the future, digitization and EWBS
operation will contribute to the Local
specific disaster prevention.

EWBS Standardization in ISDB-T International ForumTSUNAMI Warning

Broadcasters

Activation Flag
Superimpose

Receivers
Automatic activation
by Activation Flag
Emergency Information Display
by Superimpose

Adding a “Superimpose” function on the Japanese original,
EWBS Standard was approved by ISDB-T InternationalForum in May 2013

EWBS Standardization in ISDB-T International Forum

ARIB / Japan

EWBS

Harmonization
Document (EWBS)

Standard
STD-B31（TMCC）
STD-B10（PMT）
Operational Guideline
TR-B14Standard
STD-B24

Superimpose
Operational Guideline
TR-B14

Superimpose is used for
emergency informationdelivery in EWBS operation.

What is “Superimpose” ?
3 Types of text messages used in TV service（１）Normal Subtitle (Open Caption)➢ Information which belongs to the main program➢ Always on the display

Overlay in Broadcasting Studio（２）Closed Caption➢ the service for inaudible persons / multilingual movie etc.
➢ Synchronous information with the main program➢ Selection of display (on/off) by viewers（３）Superimpose➢ Asynchronous information with the main program➢ Selection of display (on/off) by viewers➢ to be sent background at any time

Overlay in Receivers
Emergency!!
Emergency!!

What is “Superimpose” ?
Superimpose
overlay in receivers

Open-Caption

On 14:46 March 11,2011 NHK’s Broadcasting1. Advantage of EWBS with ISDB-T
2. Technical requirements on EWBS
in Latin American countries
3. Development of“EWBS Superimpose Dissemination System”
for Latin American Countries
4. Current Status of EWBS Implementationin Latin American CountriesEWBS Superimpose Dissemination Systemfor Latin American countries

RobustDisplay EWBS

One-seg
EWBS STBEWBS Gateway
EWBS Inserter

EWBSSuperimpose
Module◼ Compliance to EWBS Harmonization document
Compliance to ”Superimpose” on ARIB Standard◼ Efficient dissemination with maximum use of exiting infrastructure

Siren♪ “EWBS”
Siren♪ “EWBS”
Siren♪ “EWBS”

Video introduction◆ EWBS Operation in Arequipa, Peru

◆ EWBS utilized in the evacuation drill in Lima, Peru
at the “World TSUNAMI Awareness day” (5 November 2019 )◆ EWBS reception test in Brasilia, Brazil (December 2019 )◆ EWBS reception test in San Jose, Costa Rica (March 2019 )◆ EWBS demonstration in SET Expo in Sao Paulo, Brazil(August 2019 )◆ EWBS & EEW(Earthquake Early Warning) connection test in Lima, Peru
(July 2020 )EWBS Superimpose Dissemination Systemfor Latin American countries

Simple installation
Simple operation

RobustReliable

Wide coverage
Both for Nationwide / Local information

EWBS Superimpose Module◼ Exclusive reception of Text Information◼ 24-hour monitoring ⇒ never to miss EWBS alert◼ Robust “One-seg” reception◼ Small size , Low consumptionEWBS Superimpose Module

Application of operation controlled by EWBS Inserter
Siren for TSUNAMI
1TsunamiAlert

2LocalAlert

34SignageN

Full-segOne-seg

TSUNAMI Alert

LFull-seg
One-seg

Local AlertL

One-seg

Equipment test

One-seg

Disaster Drill

NL

One-seg

Heavy Rain !

NL

One-seg

Weather Info.

Test for
DesignatedreceiverDrill

5

Important
Notification

6

GeneralInformation

NL

N: Nation wide Operation

L: Local OperationTV
TSUNAMI Alert

Local Alert

Equipment test

EWBS transmission control terminal ( operation menu )EWBS transmission control terminal ( configuration menu )Options of TS signal Distribution(FEC)

BTS(for ISDB-T)
204ByteHeader188Byte-TS(for DVB)
188BytePayload (Data)
Video, Audio, Data-Casting,EPG…

⚫ EWBS Activation Flag
⚫ Network Synchronization
Information⚫ AC (Auxiliary Channel)
etc.

EWBS signal transmission system that supports DVB distribution
BTS Transmission (for ISDB-T operation)
DTV Transmitting Station

StudioV/A
Encoder

ISDB-T
Multiplexer

BTS

Distribution

BTS

Tx

188Byte-TS Transmission (for DVB operation)
188Byte-TS

StudioV/A
Encoder

DVB
Multiplexer

EWBS signal(nation wide)

188Byte
伝送路Distribution-TS

CATV, DTTHDTV Transmitting Station
188Byte-TS

ISDB-T
Multiplexer

BTS

EWBS signal (local)

Tx

EWBS compatible Set Top Box

Automatic activation
Automatic HDMI port changeover TV-set
HDMI CEC function
ISDB-T“One-seg”

EWBS STB

Separate EWBS dedicated tuner"never misses the alarm"

Result of HDMI – CEC compatibility test in Costa Rica (March 2019)

Major manufactures’ TV-set are almost
compatible HDMI-CEC function

Applications of “EWBS Gateway”
Bridge of EWBS to any existing communication systems

Network out

Audio out

Contact out

HDMI out

WiFiSiren
EWBS

PublicCommunicationSystem
EWBS
Gateway

Speaker

Signage
EWBS

EWBS

EWBS
Gateway

EWBS
robustness
wide coveragehigh reliability

CATV

EWBS

EWBS

EWBS
Gateway・・・
EWBS

1. Advantage of EWBS with ISDB-T
2. Technical requirements on EWBS
in Latin American countries
3. Development of“EWBS Superimpose Dissemination System”
4. Current Status of EWBS Implementationin Latin American Countries

EWBS implementation in Latin America with Japan’s cooperation

EWBS operation in Peru
Lima
IRTP(H.Q.)

EWBS Inserter（Local）

L
ISDB-TTX

ISDB-TMUXArequipa
DVB-S2(BTS)

IRTP （Local)

LEWBS Inserter（Local）
ISDB-T
TX

Satellite
RXSatellite
TX

EWBS Inserter（Nation wide）

EWBS

Normalmessages

INDECI-COEN

Combination ofNational and Local
operation

EWBS

Normalmessages

INDECI-COER

EWBS operation in Peru

Display EWBS in operationin Radio broadcasting station

Peru - EWBS utilized in the event on “World TSUNAMI Awareness day”
5 November 2019

Emergency message (EWBS) displayed on the large display at the main site of the evacuation drill

Utilization in a local government

EWBS Displays utilized in the Disaster Ministerial meeting

EWBS Reception Survey in Costa Rica (March 2019)10 points

Volcan Irazu
3,400mEWBS Reception Survey in Costa Rica (March 2019)

Field test at a fire station

Field test in a vehicle

Field test in acoast guard boat
Field test in a railway carriage

EWBS Experiment in Nicaragua (March 2018)

SINAPRED

EWBS Control PC

Canal 6

EWBS Inserter

EWBS Experiment in El Salvador(October 2018, October 2019)

EWBS Control PC

Protección de Civil

EWBS receiver installation ata government agency

Canal 10

EWBS Inserter

Demonstration inEvacuation drillReception in a moving vehicle

EWBS Experiment in Brasilia (December 2019)

EWBS Experiment in Brasilia (December 2019)

Conclusion➢ The EWBS in these Latin American countries presents a different
operational style from Japan. For this reason, we have worked on technicaldevelopment of "EWBS Superimpose Dissemination System" adapted tonumerous local requirements.
➢ The system we have developed is being sequentially implemented andverified in Peru and other Latin American ISDB-T adopting countries, andwe are continuing our technical support and cooperation for stable andreliable system operation.
➢ In the near future, we strongly expect that collaboration between Japan andLatin American countries will standardize and unify the most suitablesystems, and that devices will be launched and developed in the market,
leading to the permeation of EWBS, which eventually would lead to thecontribution to disaster prevention and mitigation.

Acknowledgments➢ We would like to express high appreciation to the Ministry of Internal Affairs
and Communication of Japan for its exceptional support for our activities.
➢ We would also like to thank several manufactures, which have provided us withtechnical support for the development of EWBS devices, “TANABIKI Inc.”,“CENTURY CORPORATION”, ”NORITAKE ITRON CORPORATION” and“MASPRO DENKOH CORP.” from Japan as well as “VideoSwitch” fromArgentina.
➢ We also thank Mr. Cesar Gallegos, Peru and Mr. Frank Coloma, Costa Rica
who have been working as local coordinators for these activities.
➢ We are grateful to the SBTVD-Forum, Brazil, for cooperative study as well as toall those people in Latin American ISDB-T adopting countries, who have been
extending extensive understanding and cooperation to us for our activities.