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÷ȹкԨԷ

÷ȹкԨԷ

÷ȹкԨԷ (ѧ: Digital television) ͷմԨԵ DTV ͡觼ҹͧ§ԴкǹСüѭҳẺԨԷդᵡҧԧѺ觼ҹѭҳẺ͹͡ա¡ѭҳ㹪ͧ¡͡ҡѹ 觹繹ѵ軯ѵ෤÷ȹӤ觹Ѻѵͻ 1950S[1] ѹö觢ҡẺ͹͡˹觪ͧѭҳ ֧¡աҧ Multicasting ѭҳẺԨԵŨ֧سҾͧҾ§աҴ ÷ȹк HDTV »ȡѧ¹кѭҳҡ͹͡繴ԨԷū繡ªҡ蹤ԷաٻẺ˹ ǹͧšҧù෤չ 㹢ѹ͹㴢鹵͹˹ ҧþѲҵðҹᵡҧѹ͡ ҵðҹ㹡ѺѭҳҤ鹴ԹҺѹҧҧҧ 4

  • Advanced Television System Committee (ATSC) eight-level vestigial sideband (8VSB) ١Ѳ 6 Ѱԡ, ҹҴ, 硫, , ҸóѰԹԡѹ͹
  • Digital Video Broadcasting-Terrestrial (DVB-T) üѭҳẺ coded orthogonal frequency-division multiplexing (OFDM) ʹѺʹعẺҧдѺ hierarchical transmission. ١Ѳû, йǫŹ
  • Terrestrial Integrated Services Digital Broadcasting (ISDB-T) к˹觷͡ẺաѺѭҳշͧѺẺѺẺ͹ ѹªҡ OFDM two-dimensional interleaving ѹѧʹѺʹع hierarchical transmission ֧ 3 MPEG-2 video Advanced Audio Coding. ѹѺþѲ㹭, ԻԹ ISDB-T International ҵðҹ١Ѳҵ¡ H.264/MPEG-4 AVC ١㹻㹷ջԡǹ˭л㹷ջͿԡҷٴõ
  • Digital Terrestrial Multimedia Broadcasting (DTMB) Ѳ OFDM technology Ẻ time-domain synchronous (TDS) pseudo-random signal frame ӧҹ guard interval (GI) ͧ OFDM block ѭѡɭ㹡 training ҵðҹ١Ѳ㹻Ȩչͧ[2]

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