NRT_Use_Cases_list_ver_101

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1、OMVCNon-RealTimeMobileDTVUseCasesVer1.0October12,2012OverviewandIntroductionThefollowingUseCasesrepresenttheoutputoftheOMVCTechnicalAdvisoryGroup(OTAG)AdHocGrouponNRTUseCasesanddescribedevicerequirementstosupportnon-realtime(NRT)applicationsofMobileDTV.AnNRTu

2、secaseisanyactivitythatausermaydowhenconsumingaMobileDTVserviceandwhileusingaMobileDTVreceiverthatrequiresprocessingofprotocolsintheATSCNon-RealTimeStandardforimplementation.NRTtransmissionsarefile-basedcontentdesignedtobestoredintheconsumer’sdeviceuntiltheco

3、nsumerchoosestoaccessthem.NRTcontenttypescanbevideo,audio,text,webcontent,etc.Thisdocumentfocusesondescribingusecasesfromtheuser’sperspective.Belowaredescriptionsofsomeofthepossibleusesofthiscapability.1.ClipcastingClipcastingconsistsofshortformvideoandaudioc

4、lipssimilartopodcaststhatarebroadcastperiodicallybythebroadcasterandcapturedintheconsumer’sdevice.Theconsumerselectsfromclipcastservicesinapreferencemenu.Theconsumerthenhasavailablethemostcurrentversionofthedesiredclipservicestoredintheirdevice.Theconsumercou

5、ldreceiveanalertwhennewcontentisavailableorjustplaythelatestversion.Theclipsaredrivenbytitleandmetadata,andmayormaynotberelatedtoothermobilevideobeingbroadcast.Bothsubscriptionandad-supportedclipcastingcanbesupported.Clipcontentcanbeautomaticallyrefreshedandd

6、eletedifnotplayedinatimelymannerorwhenanewerversionhasbeencaptured.Viewermeasurementandadtargetingarealsopossible.Forexample,aconsumerselectsSportsHighlightsinhisclipcastingpreferencesettings.Whennewcontentisavailable,hewillreceiveanalertonhismobiledevicetell

7、inghimwhentherearesportshighlightclipswaitingforhimtoview.Hewillbeabletoqueueuptheclipsandwatchthemallinsuccession.Anexampleofusingaclipcastingsequenceisshownonthefollowingpage.2Figure1a:Videoiconappearsduringagameindicatingtherearevideohighlightsavailable.Fi

8、gure1b:ClipCastHighlightsWhentheuserselectstheiconalistofavailablevideoclipsappears.Figure1c:Whentheuserselectsacliptheclipplaysontheirdeviceandoncecompleteitrevertsbacktothelist.3Existin