【正文】 采用的是參數(shù)為 (255,239,8)的 RS碼? 對每個長度為 188字節(jié)的傳送包在信息字節(jié) 前加 51個全零字節(jié)，編碼完成后將這些空字節(jié)丟棄，得到參數(shù)為 (204,188,8)的 RS碼CTI CONFIDENTIAL碼流的交織與去交織17Byte2 x17Byte3x17Byte11x17Byte11x17Byte3x17Byte2 x17Byte17Byte交織器交織器 去交織器去交織器CTI CONFIDENTIAL E2 E3數(shù)據(jù)輸出? E2輸出碼率為 ， 用于編碼器? E3輸出碼率為 ， 編碼復(fù)用器? DS3輸出碼率為 ， 編碼復(fù)用器? 信道編碼– 能量隨機(jī)化– (188,204)RS編碼– 深度為 12的交織? 支持同軸電纜接口CTI CONFIDENTIALMPEG2編碼傳輸系統(tǒng)? MPEG2視音頻實時編碼器? 基于 MPEG2的數(shù)字電視轉(zhuǎn)發(fā)器? MPEG2的傳輸流復(fù)用器? DVB的專用 ASI數(shù)據(jù)輸入輸出設(shè)備 (270Mbps)? 基于 ,DS3數(shù)據(jù)輸出設(shè)備? QAM調(diào)制設(shè)備? DVB節(jié)目加擾及加密系統(tǒng)? 基于條件接收的節(jié)目播出管理及收費系統(tǒng)CTI CONFIDENTIAL其它應(yīng)用V A編碼器編碼器Cable轉(zhuǎn)發(fā)器轉(zhuǎn)發(fā)器衛(wèi)星衛(wèi)星...PS流復(fù)用流復(fù)用 PS存儲存儲DVD VCD刻錄系統(tǒng)刻錄系統(tǒng)DVD VCDCTI CONFIDENTIAL其它進(jìn)一步應(yīng)用? 視頻點播 VOD– 信道編碼技術(shù)– ASI輸出技術(shù)? 高清電視 HDTV– 將信源換為 MPEG2 MPH1440L。CTI CONFIDENTIAL中中頻頻 A/D解調(diào)解調(diào) 系統(tǒng)系統(tǒng)解復(fù)用解復(fù)用音頻解壓縮音頻解壓縮視頻編碼視頻編碼音頻濾波音頻濾波與放大與放大控制部分控制部分視頻解壓縮視頻解壓縮 Tuner數(shù)字電視轉(zhuǎn)發(fā)器 過濾 轉(zhuǎn)換 輸出 BNC衛(wèi)星數(shù)字電視轉(zhuǎn)發(fā)器結(jié)構(gòu)CTI CONFIDENTIAL衛(wèi)星數(shù)字電視轉(zhuǎn)發(fā)器? 接收 C波段， Ku波段衛(wèi)星數(shù)字電視廣播? 支持節(jié)目相關(guān)的 TS流的過濾? SPTS流對 IEEE1284并 口的輸出? 并口到 ASI輸出接口轉(zhuǎn)換? 可保留原節(jié)目的所有特性（ PID， 加擾）? 同時對所轉(zhuǎn)發(fā)的節(jié)目進(jìn)行解碼預(yù)監(jiān)CTI CONFIDENTIAL復(fù)用器結(jié)構(gòu)? 系統(tǒng)層編碼 —— 在時基信號的控制下，將編碼的視頻和音頻流組合為單一的節(jié)目流或傳送流。iN。jN。jN。iN。ielementary_cell_field_length。iN。iN。iN。iN。jN。iN。jN。iN。iN。 Implementation guidelines for the use of MPEG2 Systems, Video and Audio in satellite, cable and terrestrial broadcasting applications.? [13] IEEE 1394: High Performance Serial Bus.CTI CONFIDENTIALschedulePATMPEG2PID=0 ?0000BATPID=0 ?0011PMTPMTPID=PTSDTPID=0 ?0002NITActual transportstreamDVB(mandatory)PID=0 ?0010NITOther transportStreamDVB(optional)PID=0 ?0010CATPID=0 ?0001SDTOther transportStreamPID=0 ?0011SDTActual transportStreamPID=0 ?0011EITActual transportStreampresent/followingPID=0 ?0012EITActual transportStreamschedulePID=0 ?0012EITOther transportStreampresent/followingPID=0 ?0012TDTPID=0 ?0014RSTPID=0 ?0013TOTPID=0 ?0014STPID=0 ?0010 to 0 ?0014Timeamp。 Guidelines on implementation and usage of Service Information (SI).CTI CONFIDENTIAL相關(guān)標(biāo)準(zhǔn)（續(xù)）? [8] ISO/IEC 106461: Information Technology Universal MultipleOctet Coded Character Set (UCS) Part 1: Architecture and Basic Multilingual Plane.? [9] ISO/IEC 6937: Information Technology Coded graphic character set for text munication –Latin alphabet.? [10] ETR 289: Digital Video Broadcasting (DVB)。 DVB interaction channel for Satellite Master Antenna TV distribution systems (SMATV)DVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 9)DVBPDHDVBSDHDVBATMETS 300 813 Interfacing to PDH worksETS 300 814 Interfacing to SDH worksETS 300 815 DVB interfaces to ATM worksDVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 10)DVBMHP ETSI TS 101 812 Multimedia Home Platform Specification DVBCTI CONFIDENTIAL? DVBSI ?CTI CONFIDENTIAL概述? SIService Information? 前端系統(tǒng)提供服務(wù)、事件信息的渠道? 接收端根據(jù)該信息進(jìn)行自動配置? 兼容 PSI， 比 PSI提供更多的信息– 調(diào)諧、信道解碼等? 提供一種實現(xiàn) EPG的方式CTI CONFIDENTIALBouquet SatelliteTransponder1Transponder2Transponder3TransponderTCableChannel1Channel 2ChannelCTerrestrialChannel1Channel2ChannelCService 1Service2Service3ServiceSVideo Audio 1 Audio 2 DataService1Service 2ServiceSService1Service 2ServiceSNetworksMultiplexesServiceComponentsCTI CONFIDENTIAL相關(guān)標(biāo)準(zhǔn)? [1] ISO/IEC 138181: Information Technology Generic Coding of Moving Pictures and Associated Audio Remendation (systems).? [2] ISO 3166: Codes for the representation of names of countries.? [3] ISO : Code for the representation of names of languages.? [4] EBU SPB 492 (1992): Teletext specification (625 line Television Systems).CTI CONFIDENTIAL相關(guān)標(biāo)準(zhǔn)（續(xù)）? [5] ISO 8859: Information processing 8bit singlebyte coded graphic character sets, Latin alphabets.? [6] ETR 162: Digital Video Broadcasting (DVB)。 DVB interaction channel through the Public Switched Telemunications System (PSTN) / Integrated Services Digital Network (ISDN)DVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 8)DVBNIPDVBRCCSETS 300 802 Digital Video Broadcasting (DVB)。 Subtitling systemsDVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 7)DVBRCCDVBRCTETS 300 800 Digital Video Broadcasting (DVB)。 Technical specification of SimulCrypt in DVB systemsprEN 50221 Common Interface Specification for Conditional Access and other Digital Video Broadcasting Decoder ApplicationsDVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 6)DVBDataDVBPIDVBSubprTS 101 192 Digital Video Broadcasting (DVB)。 Video and audio in satellite and cable broadcasting applicationsETR 290 Measurement guidelines for DVB systemsprEN 50201 Interface for DVBIRDsDVBCTI CONFIDENTIALDVB標(biāo)準(zhǔn)的組成 (續(xù) 5)DVBCSDVBSIMDV