DTV 基础

F-3697F-3697{DTV基础简介}{Version1.0}Sucre.huF-3697RevisionHistoryRevisionNo.DescriptionDate{Version}•{Initialrelease}{5/27/2013}Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.2F-3697SecurityLevel:ConfidentialAF-3697内容提要DTV优势及目前世界各地DTV现状DTV系统概述PSI/SI简介DTV搜台简介EPG简介CI简介Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.3SecurityLevel:ConfidentialAF-3697F-3697数字电视的定义与优势数字电视定义：信号播出、传输、接收环节，全面采用数子电视信号的电视系统。信号质量好,抗干扰能力强传输效率高,多功能复用易储存和记录易进行节目录制体积小,成本低与信息高速公路接轨加强了广播电视最后与通信、计算机业务一体化Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.4SecurityLevel:ConfidentialAF-3697数字电视分类数字电视涉及很多领域的标准，按照传输标准可以分为四个体系：地面传输(无线):ATSC、DVB-T、ISDB-T和DMB-T有线传输:ATSC-C和DVB-C卫星传输:DVB-S和DVB-S2手持设备传输:DVB-H、T-DMB、DVB-SH和CMMB目前国内上述四个体系采用的分别是：DTMB、DVB-C、DVB-S和CMMBCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.5SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialADTV地面标准世界格局图Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.6SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialADTV各国主要采用的标准Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.7SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialADTV概念图Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.8SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialATransportStream(1/2)Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.9SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialATransportStream(2/2)Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.10SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialACopyright©2012MStarSemiconductor,Inc.Allrightsreserved.11SecurityLevel:ConfidentialAPAT,SDT,EIT,TDT,….NITPMTF-3697SI/PSIPSI:ProgramSpecificInformationDescribeaservice.Important.PAT:ProgramAssociationTablePMT:ProgramMapTableNIT:NetworkInformationTableCAT:ConditionalAccessTableCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.12SecurityLevel:ConfidentialAF-3697PAT/PMTPATTransportstreamidNetworkPIDProgramnumberandcorrespondingPMTPIDCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.13SecurityLevel:ConfidentialAF-3697PMTProgramNumberPCRPIDElementaryinformationElementaryPIDElementaryStreaminformationStreamtypeCAsysteminformationMultilingualaudionameMosaicinformationCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.14SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialACopyright©2012MStarSemiconductor,Inc.Allrightsreserved.15SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialAPAT和PMT关系Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.16SecurityLevel:ConfidentialAF-3697NITNetworkidNetworknameDeliverysystemdescriptionSatelliteCableTerrestrialServicelistinformationMultilingualnetworknameLinkageinformationCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.17SecurityLevel:ConfidentialAF-3697SI/PSISI:SystemInformationInformational,notreallynecessary.SDT:ServiceDescriptionTableEIT:EventInformationTableBAT:BouquetAssociationTableTOT:TimeOffsetTableTDT:TimeandDateTableCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.18SecurityLevel:ConfidentialAF-3697SDTServiceidServicenameandtypeMultilingualservicenameBouquetnameLinkageinformationNVODreferencedescriptionTimeshiftedservicedescriptionMosaicinformationCAsysteminformationCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.19SecurityLevel:ConfidentialAF-3697EITEventidEventnameStarttimeDurationContentclassificationParentalratinginformationShorteventdescriptionExtendedeventdescriptionLinkageinformationTimeshiftedeventdescriptionCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.20SecurityLevel:ConfidentialAF-3697BATBouquetidBouquetnameMultilingualbouquetnameCAsysteminformationLinkageinformationServicelistinformationCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.21SecurityLevel:ConfidentialAF-3697TDT/TOTTDTUTCtimeExample:93/10/1312:45:000xC079124500TOTUTCLocalTimeOffsetCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.22SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialAFrequentlyuseddescriptorsCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.23SecurityLevel:ConfidentialANITSDTEITNetwork_name_descriptorService_descriptorShort_event_descriptorService_list_descriptorMultilingual_service_name_descriptorComponent_descriptorDelivery_system_descriptorParental_rating_descriptorF-3697SDTorPATbasedprogramDBBothareok.WeareSDTbased.DTGcertificateisSDTbased.Whynotunion?ToocomplextohandledynamicmonitorDon’tsuggestcustomerstodoso.Copyright©2012MStarSemiconductor,Inc.Allrightsreserved.24SecurityLevel:ConfidentialAF-3697SecurityLevel:ConfidentialAScanflowCopyright©2012MStarSemiconductor,Inc.Allrightsreserved.25SecurityLevel:ConfidentialAForoneRFchannel:StartGetSDT/PAT/PMT/NITtablesbysetsectionfilterCheckandparseifwegetSDT/PAT/NITTables(includingmulti-sections)CheckprogramsaveruletoseeifweneedtostoreornotSavetoDBWritetunerandcheckdemoisLock？F-3697EPG通常EPG是图形界面，包括节目名称、频道、播出时间等，并可以选择观看每个节目的更详细的内容。广播节目可能包含一个简单的基于文字的显示。EPG允许浏览者利用这些节目介绍信息；例如根据节目或频道主题搜