数位电视

數Digitalv.s.Analog•Digital–不易–料–邏•DigitalData•DigitalData(Ex:GSM)類數量量類數類數類理理理料理3-6離離離數(FEC)DigitalTV•TVandTV-set•數•數–+STB數•數+MPEG-2•Frequency-divisionmultiplexing•Time-divisionmultiplexing1類channelÆ7~10數channelFDM&TDM•(Terrestrial)•路(CATV)•(DirectBroadcastSatellite)•ATSC–AdvancedTelevisionSystemsCommittee•DVB–DigitalVideoBroadcasting–EuropeanTelecommunicationStandardInstitute•ISDB–IntegratedServiceDigitalBroadcasting–數JapaneseDigitalBroadcastingExpertGroup數•數–DVD–CD(……)•EPG(ElectronicProgramGuide)•IRD(IntegratedReceiverDecoder)•VOD(VideoonDemand)數•STBSet-topbox–數••類•High-DefinitionTelevision•43Æ169•SDTV:525ÆHDTV:1125•離度7Æ3•10度Æ30度•數連便度•SDTV–Standard-DefinitionTelevision•HDTV–High-DefinitionTelevision數易HDTVHDTV/EDTV/SDTV•–––•––•––AspectRatio••••AspectRatioConversion•progressivescan•interlacescanInterlace/ProgressiveScanRatiosandResolutions論•STB(150US$~400US$)––不立論()•Æ理•CPUÆ20MIPS•參•Æ––論()•STB&–digitalset-topbox/數/–路IPProtocol•DTV•:6MHz數•:()UHF34–13:00~14:30HDTV14:30~18:30SDTV聯:2006年531類參料•數•數論•–數•林:數()–數56•:數