【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part7:Optimizedreferencesoftwareforcodingofaudio-visualobjects
【原文标准名称】:信息技术.音视对象编码.第7部分:音视对象编码用最优化参考软件
【标准号】:ISO/IECTR14496-7-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-10-01
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:汇编;声信号;音频视频;信息技术;信息交换;编码(数据转换);数据处理;图像处理;多媒体;定义;互动;计算机软件;功能;编码;对象;视频信号;代码表示;系统工程;系统建筑学;计算机制图;尺寸
【英文主题词】:Acousticsignals;Audiovisual;Codedrepresentation;Codification;Coding(dataconversion);Computergraphics;Computersoftware;Dataprocessing;Definition;Definitions;Encoding;Formats;Functionality;Imageprocessing;Informationinterchange;Informationtechnology;Interactive;Multimedia;Object;Systemarchitecture;Systemengineering;Videosignals
【摘要】:APrivateIntegratedServiceNetwork(PISN)isanetworkcomprisingeitheronePINXormorethanonePINXinterconnectedbyInter-PINXconnections.ThisTechnicalReportisconcernedwithinter-PINXconnections(IPC)thatareprovidedbyInterveningNetworks(IVN),andthewayinwhichthesearehandledbyPINXstoprovideaplatformforinter-PINXcommunication.DifferenttypesofIVNscanbeusedtoprovideIPCs,inaccordancewiththescenariosindicatedinISO/IEC11579-1.TheseareOverlayScenariosinthattheyenabletheservicesofthePISNtooperatetransparentlyacrossanIVN.ConnectedPINXsneedtoco-ordinatetheiruseofIVNs,andappropriatestandardisationisneededtoallownetworkstobecreatedemployingPINXsandIVNsfrommultiplevendors.Thefollowingpointsneedtobeconsidered:—IngeneralbutdependingonthetypeofIVN,proceduresandsignallingprotocolsbetweenthePINXsareneededfortheestablishment,maintenanceandreleaseofIPCs.Appropriatestandardisationoftheseproceduresandsignallingprotocolsisnecessary.—AttheQreferencepoint(aconceptualpointwithinaPINX)channelsandPISNcallcontrolsignalling(QSIG)aredefinedindependentlyofthetypeofIVN.However,attheCreferencepoint(wherethePINXisconnectedtotheIVN),therepresentationofthechannelsandofsignallingisdependentonthetypeofIVN,andonhowthePINXsusetheIPCs.AppropriatestandardisationoftheseaspectsattheCreferencepointisnecessary.—IngeneraltherelationshipbetweenachannelattheQreferencepointanditsrepresentationattheCreferencepointisnotstatic,andproceduresandsignallingbetweenthePINXsareneededfortheco-ordinationoftheserelationships.Appropriatestandardisationoftheseproceduresandsignallingisnecessary.—Appropriatemechanismsneedtobestandardisedforconveyinginter-PINXsignallingthroughtheIVN.ThesewilldependonthecharacteristicsoftheIPCused.TheaimofthisTechnicalReportistoidentify:1.InadditiontoPISNcallcontrolsignalling(QSIG),whatneedstobestandardised,inordertobeabletointer-connectPINXs;2.Generaltechniques,procedures,protocolsetc.,thatapplytoofall(oratleastverymany)typesofIVNs.
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:40P.;A4
【正文语种】:英语