STRL Presentation 7 - DiBEG

1 STRLISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesDigital broadcasting experts groupPresentation 7 Presentation 7 Emergency Warning Broadcast SystemEmergency Warning Broadcast System27th 27th , PhilippinesManila, PhilippinesDiBEGDiBEGJAPANJAPANK azunori YokohataKazunori Yokohata(NHK Science & Technical Research Lab)(NHK Science & Technical Research Lab)2 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesContents Outline of the Emergency Warning Broadcast System (EWBS) EWBS for analog broadcasting EWBS for digital broadcasting ISDB-T Automatic activation of One-Seg handheld receivers by EWBSSTRLISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesDigital broadcasting experts group Outline of the Emergency Warning Broadcast System (EWBS)4 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the Philippines The emergency warning broadcast system is The emergency warning broadcast system is EWBS is a remote activation system for Radio & is a remote activation system for Radio & TV.

2 EWBS transmits alert/warning information to viewers and listenerEWBS transmits alert/warning information to viewers and listeners about about disasters. EWBS has been operating since September 1985 in has been operating since September 1985 in Japan. Test signals/programs are broadcast monthly in Japan (every 1 Test signals/programs are broadcast monthly in Japan (every 1ststday)day) EWBS is operated in response to largeEWBS is operated in response to large--scale earthquake warnings, Tsunami Alerts scale earthquake warnings, Tsunami Alerts and broadcast requests from local governorsand broadcast requests from local governorsWhat s the EWBS? (I)Broadcasting stationTransmitterBroadcasting service areaEWS signalMeteorological agencyAlert !

3 !!!5 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the Philippines Is it possible to do remote activation by not only broadcasting Is it possible to do remote activation by not only broadcasting but also communication ?but also communication ? Yes, it is. However, they both have merits and demerits, and theYes, it is. However, they both have merits and demerits, and thesystem system should be designed to make the best use of these be designed to make the best use of these merits. Remote activation by communication (telephone)Remote activation by communication (telephone) Merits : possible to control individual receiversMerits : possible to control individual receivers Demerits: In case of a large scale disaster, traffic congestion Demerits: In case of a large scale disaster, traffic congestion is very very likely.

4 Remote activation by broadcastingRemote activation by broadcasting Merits : possible to quickly activate many receivers Merits : possible to quickly activate many receivers simultaneouslysimultaneously Demerits: difficult to customize activation control for individuDemerits: difficult to customize activation control for individual al receiversreceiversWhat s the EWBS? (II)6 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesRemote activation by communication (email, etc.) ReliabilityIn case of disasters, congestion is very likely. SpeedNeed more time to inform a huge number of people Locality Possible to control activation in local area Remote activation by Remote activation by mailmailCommunicationBroadcasting Remote activation by Remote activation by Emergency warning broadcastEmergency warning broadcast7 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the Philippines ReliabilityNo traffic congestion, anybody can receive it in the broadcasting offer reliable news by filtering information.

5 SpeedPossible to inform an extremely large number of people simultaneously. LocalityThe system used in Japan is controlled by prefectural activation by EWBSR emote activation and Remote activation and emergency warning broadcast emergency warning broadcast reception by EWBS reception by EWBS Broadcasting is an ideal media to deliver disaster information8 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesThe history of EWBA round 1980 NHK STRL launched EWBS studySep. 1,1985 EWB operation start in ,1987 First EWB operation for tsunami ,2007 Most recent EWB operation for tsunami alertUp to nowEWB has operated 15 times during 21 yearsTest broadcasting takes place on 1stof every month at noonshipment of receivers : about 550,000*reference:On ,1923, a large scale earthquake attacked Tokyo area and more than 100,000 people died.

6 It became a trigger to start radio broadcasting in Japan. the day of disaster prevention in : Emergency Warning Broadcast 9 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesList of Recent Significant Earthquakes (from December 2004)List of Recent Significant Earthquakes (from December 2004) 500 Java, IndonesiaJuly. 17, 6,000 Java, IndonesiaMay. 26, ,000(estimated)Kashmir, PakistanOct. 8, ,000-2,000 Northern Sumatra, IndonesiaMar. 28, 500 Zarand, IranFeb. 22, ,000 Off northwest coast of Sumatra,IndonesiaDec. 26, 2004 MagnitudeFatalitiesPlaceDate10 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesConditions for operation of EWB in Japan 1.

7 When a precautionary declaration of a large-scale earthquake such as the Tokai earthquake is issued, (First-class nationwide)2. When a Tsunami (tidal wave) alert is given ,(Second-class nationwide, prefecture wide)3. When the local governor requests an emergency warning broadcast broadcast (First(First--class nationwide)class nationwide) In Japan, EWB broadcasts only in three cases where there is great risk to human lives and property,Local governorsRequestNHKSTRLISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesDigital broadcasting experts group Analog EWBS12 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesAnalog EWBS transmission and reception block diagramSwitchTrans-mitterProgramsignalCo ntrolsignalgeneratorProgram signalreceptionControl signalreceptionControl Broadcasting stationReceiver withwarning functionRadioTVAlarming sound.

8 Followed by announcement13 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the Philippines206 points all over Japan00:01:0000:02:0000:03:00 EarthquakeConnection of Emergency Information14 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesAnalog EWBS Control signal A start sign and end sign are transmitted by an FSK 640Hz/1024Hz signal combined with a warning soundEmergency warning broadcasting programUsual ProgramUsual ProgramStart signEnd signtime15 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT.

9 The Future of Digital Television in the PhilippinesReceiver with a ClockPortable AM/FM ReceiverReceiver withPower on switchAnalog EWB conventional receivers16 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the Philippines(2) Onboard EWS decoder(1) New receiver for EWSEWS decoderAnalog EWB New Receivers (New development)A new algorithm capable of running on a multi-purpose processor IC integrated in home electronics has been developed STRLISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesDigital broadcasting experts group Digital EWBS and ISDB-T18 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesISDB-T (Integrated service digital broadcasting terrestrial)

10 6 MHz13 segmentsTV stationHDTVF ixed reception13segmentsHome receiverMobile reception1 segment1segmentSupports 3 reception typeson one channelDiversity ReceptionReceiver in vehicleHandheld receiverAudioVisual commenced13 commencedMobile reception19 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesISDB-T services exampleMobile receiverInternetISDB-T6 MHzorHDTVSDTV x 2 or SDTV x 3 Handheld receiver12 segments : Fixed (multi SD or HDTV)Data bit-rate : 64 QAM(fec:3/4)Features HDTV & surround sound or Multi SD servicedOne-Seg Mobile & handheld Data bit-rate 416 KbpsModulation : QPSK (2/3)Features Robustness for mobile receptionFixed receiver(Multi SD, HDTV)20 STRLD igital broadcasting experts groupISDBISDB--T, the Future of Digital Television in the PhilippinesT, the Future of Digital Television in the PhilippinesISDB-T One-Seg receiversFOMA P901iTVPortable DVD playerLaptop ComputerSoftBank905 SHAntenna for One-Seg receiverNumber of shipments as of Dec 2007.