ISO/IEC 21000-3-2003 信息技术.多媒体框架(MPEG-21).第3部分:数字项识别
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【英文标准名称】:Informationtechnology-Multimediaframework(MPEG-21)-Part3:Digitalitemidentification
【原文标准名称】:信息技术.多媒体框架(MPEG-21).第3部分:数字项识别
【标准号】:ISO/IEC21000-3-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-04
【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
【标准类型】:()
【标准水平】:()
【中文主题词】:多媒体;数字的;代码表示;定义;信息交换;数据处理;信息技术;尺寸;汇编;图形数据处理;计算机制图;编码;成像处理;视频信号;MPEG
【英文主题词】:Codedrepresentation;Codification;Computergraphics;Dataprocessing;Definition;Definitions;Digital;Encoding;Formats;Graphicdataprocessing;Imageprocessing;Informationinterchange;Informationtechnology;MPEG;Multimedia;Videosignals
【摘要】:ThisthirdpartofMPEG-21(ISO/IEC21000-3),entitledDigitalItemIdentification(DM),specifies—HowtouniquelyidentifyDigitalItems(andpartsthereof);—HowtouniquelyidentifyIPrelatedtotheDigitalItems(andpartsthereof),forexampleabstractions;—HowtouniquelyidentifyDescriptionSchemes;—TherelationshipbetweenDigitalItems(andpartsthereof)andexistingidentificationsystems.AnnexCcontainsalistofrelevantidentificationsystems.Thisisnotanexhaustivelistandissubjecttochangeovertime;—TherelationshipbetweenDigitalItems(andpartsthereof)andrelevantdescriptionschemes.AnnexCcontainsalistofrelevantdescriptionschemes.Thisisnotanexhaustivelistandissubjecttochangeovertime.ISO/IEC21000-3specificationdoesnotspecify:—Newidentificationsystemsforthecontentelementsforwhichidentificationanddescriptionschemesalreadyexistandareinuse(e.g.,ISO/IEC21000-3doesnotattempttoreplacetheISRC,asdefinedinISO3901,forsoundrecordings;—Normativedescriptionschemesfordescribingcontent.1OrganisationoftheDocumentThisspecificationcontainsfiveClausesandfourAnnexes:TheremainderofthisClause1containsanoverviewofMPEG-21DigitalItemsandtherelationbetweenparts2and3ofISO/IEC21000.Clauses2and3containnormativereferencesandalistofapplicabletermsanddefinitions.Clause4specifieshowtouniquelyidentifyDigitalItems,howtoassociaterelatedidentifierswithDigitalItems,howtoidentifydifferenttypesofDigitalItems.Clause0thenspecifieshowtoassociatemetadatawithDigitalItemsbyusingdescriptionschemeidentifiers.ThenormativeAnnexAcontainscriteriathatneedtobefulfilledbyaregistrationauthoritythatisrequiredfortheidentificationofDigitalItemsandtheirpartsasspecifiedinISO/IEC21000-3.AnnexBcontainsaninformativeexampleofhowtoresolveauniqueidentifiertoappropriatemetadata.AnnexCcontainsaninformativelistofexistingidentificationschemesthatcanbeusedbythisspecification.Finally,AnnexDcontainsinformationofpatentstatementsrelatingtothisspecification.2IntroductiontoDigitalItemsWithinanysystem(suchasMPEG-21)thatproposestofacilitateawiderangeofactionsinvolving"DigitalItems",thereisaneedforaveryprecisedescriptionfordefiningexactlywhatconstitutessuchan"item".Clearlytherearemanykindsofcontent,andprobablyjustasmanypossiblewaysofdescribingittoreflectitscontextofuse.ThispresentsastrongchallengetolayoutapowerfulandflexiblemodelforDigitalItemswhichcanaccommodatethemyriadformsthatcontentcantake(andthenewformsitwillassumeinthefuture).SuchamodelisonlytrulyusefulifityieldsaformatthatcanbeusedtorepresentanyDigitalItemsdefinedwithinthemodelunambiguouslyandcommunicatethem,andinformationaboutthem,successfully.TheDigitalItemDeclarationspecification(ISO/IEC21000-2)providessuchflexibilityforrepresentingDigitalItems.3ExampleofaDigitalItemThissub-clauseprovidesasimpleexampleofaDigitalItem.MorecomplexexamplescanbefoundinISO/IEC21000-2.ThisexampleusesISO/IEC21000tocreatean"MPEG-21MusicAlbum"comprisingaseriesofresources:—Threeaudiofiles(codedinMPEG-2AAC,representingthe"tracks"thatformthebasisofthealbum;—Twotextfiles(inUnicode,representingthelyricstotwoofthetracks;—Twoimages(inJPEG,representingthecoverphotographandotherartworkofthealbum;—Atextfile(inHTML,representingtheintroductorytextforthealbum.TherelationshipbetweentheseresourcesandhowtheyrelatetotheDigitalItemitselfisexpressedintheDigitalItemDeclaration(DID.TheDIDcontains,besidesthereferencestotheresources,informationabouttheitemand/
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:30P;A4
【正文语种】:英语
【原文标准名称】:信息技术.多媒体框架(MPEG-21).第3部分:数字项识别
【标准号】:ISO/IEC21000-3-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-04
【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
【标准类型】:()
【标准水平】:()
【中文主题词】:多媒体;数字的;代码表示;定义;信息交换;数据处理;信息技术;尺寸;汇编;图形数据处理;计算机制图;编码;成像处理;视频信号;MPEG
【英文主题词】:Codedrepresentation;Codification;Computergraphics;Dataprocessing;Definition;Definitions;Digital;Encoding;Formats;Graphicdataprocessing;Imageprocessing;Informationinterchange;Informationtechnology;MPEG;Multimedia;Videosignals
【摘要】:ThisthirdpartofMPEG-21(ISO/IEC21000-3),entitledDigitalItemIdentification(DM),specifies—HowtouniquelyidentifyDigitalItems(andpartsthereof);—HowtouniquelyidentifyIPrelatedtotheDigitalItems(andpartsthereof),forexampleabstractions;—HowtouniquelyidentifyDescriptionSchemes;—TherelationshipbetweenDigitalItems(andpartsthereof)andexistingidentificationsystems.AnnexCcontainsalistofrelevantidentificationsystems.Thisisnotanexhaustivelistandissubjecttochangeovertime;—TherelationshipbetweenDigitalItems(andpartsthereof)andrelevantdescriptionschemes.AnnexCcontainsalistofrelevantdescriptionschemes.Thisisnotanexhaustivelistandissubjecttochangeovertime.ISO/IEC21000-3specificationdoesnotspecify:—Newidentificationsystemsforthecontentelementsforwhichidentificationanddescriptionschemesalreadyexistandareinuse(e.g.,ISO/IEC21000-3doesnotattempttoreplacetheISRC,asdefinedinISO3901,forsoundrecordings;—Normativedescriptionschemesfordescribingcontent.1OrganisationoftheDocumentThisspecificationcontainsfiveClausesandfourAnnexes:TheremainderofthisClause1containsanoverviewofMPEG-21DigitalItemsandtherelationbetweenparts2and3ofISO/IEC21000.Clauses2and3containnormativereferencesandalistofapplicabletermsanddefinitions.Clause4specifieshowtouniquelyidentifyDigitalItems,howtoassociaterelatedidentifierswithDigitalItems,howtoidentifydifferenttypesofDigitalItems.Clause0thenspecifieshowtoassociatemetadatawithDigitalItemsbyusingdescriptionschemeidentifiers.ThenormativeAnnexAcontainscriteriathatneedtobefulfilledbyaregistrationauthoritythatisrequiredfortheidentificationofDigitalItemsandtheirpartsasspecifiedinISO/IEC21000-3.AnnexBcontainsaninformativeexampleofhowtoresolveauniqueidentifiertoappropriatemetadata.AnnexCcontainsaninformativelistofexistingidentificationschemesthatcanbeusedbythisspecification.Finally,AnnexDcontainsinformationofpatentstatementsrelatingtothisspecification.2IntroductiontoDigitalItemsWithinanysystem(suchasMPEG-21)thatproposestofacilitateawiderangeofactionsinvolving"DigitalItems",thereisaneedforaveryprecisedescriptionfordefiningexactlywhatconstitutessuchan"item".Clearlytherearemanykindsofcontent,andprobablyjustasmanypossiblewaysofdescribingittoreflectitscontextofuse.ThispresentsastrongchallengetolayoutapowerfulandflexiblemodelforDigitalItemswhichcanaccommodatethemyriadformsthatcontentcantake(andthenewformsitwillassumeinthefuture).SuchamodelisonlytrulyusefulifityieldsaformatthatcanbeusedtorepresentanyDigitalItemsdefinedwithinthemodelunambiguouslyandcommunicatethem,andinformationaboutthem,successfully.TheDigitalItemDeclarationspecification(ISO/IEC21000-2)providessuchflexibilityforrepresentingDigitalItems.3ExampleofaDigitalItemThissub-clauseprovidesasimpleexampleofaDigitalItem.MorecomplexexamplescanbefoundinISO/IEC21000-2.ThisexampleusesISO/IEC21000tocreatean"MPEG-21MusicAlbum"comprisingaseriesofresources:—Threeaudiofiles(codedinMPEG-2AAC,representingthe"tracks"thatformthebasisofthealbum;—Twotextfiles(inUnicode,representingthelyricstotwoofthetracks;—Twoimages(inJPEG,representingthecoverphotographandotherartworkofthealbum;—Atextfile(inHTML,representingtheintroductorytextforthealbum.TherelationshipbetweentheseresourcesandhowtheyrelatetotheDigitalItemitselfisexpressedintheDigitalItemDeclaration(DID.TheDIDcontains,besidesthereferencestotheresources,informationabouttheitemand/
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:30P;A4
【正文语种】:英语
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