1、Adopted by INCITS (InterNational Committee for Information Technology Standards) as an American National Standard.Date of ANSI Approval: 12/24/2003Published by American National Standards Institute,25 West 43rd Street, New York, New York 10036Copyright 2003 by Information Technology Industry Council
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3、his publication may be reproduced in any form, including an electronic retrieval system, withoutthe prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaReference numberISO
4、/IEC 21000-3:2003(E)ISO/IEC 2003INTERNATIONAL STANDARD ISO/IEC21000-3First edition2003-04-01Information technology Multimedia framework (MPEG-21) Part 3: Digital Item Identification Technologies de linformation Cadre multimdia (MPEG-21) Partie 3: Identification des lments digitaux ISO/IEC 21000-3:20
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9、in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2003 All rights reservedISO/IEC 21000-3:2003(E) ISO/IEC 2003 All rights reserved iiiContent
10、s Page Foreword. v Executive Summary for MPEG-21 . vi 1 Scope 1 1.1 Organisation of the Document 1 1.2 Introduction to Digital Items 2 1.3 Example of a Digital Item 2 1.4 Relationship between Digital Item Declaration and Digital Item Identification 2 1.5 Using Identifiers to Link Identifiers with As
11、sociated Information . 4 2 Normative references . 4 3 Terms and definitions. 5 3.1 Terms and definitions. 5 3.2 Abbreviations 6 4 Identification of Digital Items and their Parts. 7 4.1 Identifier Element 7 4.1.1 Syntax. 7 4.1.2 Semantics 8 4.1.3 Notes (informative) . 8 4.2 RelatedIdentifier Element
12、8 4.2.1 Syntax. 8 4.2.2 Semantics 8 4.2.3 Example 9 4.3 Type Element. 9 4.3.1 Syntax. 9 4.3.2 Semantics 9 4.3.3 Example 9 4.4 Digital Item Identification XML Schema Definition 9 4.5 Examples (informative). 10 4.5.1 Example: Identification of a Music Release . 10 4.5.2 Example: Referring to Digital I
13、tem in external DID Document . 10 4.5.3 Example: Referring to Resources stored on external server. 12 4.5.4 Example: Identifying a Sound Recording and the related Underlying Musical Work 12 4.5.5 Example: Identifying a Digital Item Type 13 5 Identification of Description Schemes 13 Annex A (normativ
14、e) Requirements for the Registration Authority for Digital Item Identification Systems 14 A.1 Identifications Systems to be registered for use within ISO/IEC 21000 14 A.2 Procedure for Requesting an Identification System Identifier for use within ISO/IEC 21000 . 14 A.3 Responsibilities of the Regist
15、ration Authority. 14 A.4 Contact information for the Registration Authority 15 A.5 Responsibilities of Parties Requesting a Identification System within ISO/IEC 21000 . 15 A.6 Appeal Procedure for Denied Applications 15 A.7 Registration Application Form. 16 Annex B (informative) Interoperability Con
16、siderations on Resolution Systems. 17 B.1 Introduction . 17 B.2 Necessary Functions and Resolution System Switcher. 17 B.3 An Overall Example of a DID Browsing System with Resolution System Switcher 19 B.4 Summary 19 Annex C (informative) List of existing Identification and Description Schemes . 20
17、ISO/IEC 21000-3:2003(E) iv ISO/IEC 2003 All rights reservedC.1 Common Information System CIS 20 C.2 Content ID Forum cIDf .20 C.3 Digital Object Identifier DOI.21 C.4 Dublin Core Metadata Initiative DCMI 22 C.5 The EAN/UCC System.22 C.6 Global Release Identifier GRID .22 C.7 Identifier for Versions
18、of Audiovisual works V-ISAN23 C.8 International Standard Audiovisual Number ISAN .23 C.9 International Standard Book Number ISBN.23 C.10 International Standard Recording Code ISRC.24 C.11 International Standard Serial Number ISSN 24 C.12 International Standard Textual Work Code ISTC 25 C.13 Internat
19、ional Standard Work Code ISWC.25 C.14 INteroperability of Data in E-Commerce Systems INDECS26 C.15 ONline Information eXchange ONIX International 26 C.16 URL-based Identification Schemes .27 Annex D (informative) Patent statements.29 Bibliography30 ISO/IEC 21000-3:2003(E) ISO/IEC 2003 All rights res
20、erved vForeword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through
21、 technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also ta
22、ke part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare
23、 International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. ISO/IEC 21000-3 was prepared by Joint Tech
24、nical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 21000 consists of the following parts, under the general title Information technology Multimedia framework (MPEG-21): Part 1: Vision, Technologies and S
25、trategy Part 2: Digital Item Declaration Part 3: Digital Item Identification Part 4: Intellectual Property Management and Protection Part 5: Rights Expression Language Part 6: Rights Data Dictionary Part 7: Digital Item Adaptation Part 8: Reference Software Part 9: File Format NOTE Other parts may b
26、e added in the future. ISO/IEC 21000-3:2003(E) vi ISO/IEC 2003 All rights reservedExecutive Summary for MPEG-21 Today, many elements exist to build an infrastructure for the delivery and consumption of multimedia content. There is, however, no “big picture“ to describe how these elements, either in
27、existence or under development, relate to each other. The aim for MPEG-21 is to describe how these various elements fit together. Where gaps exist, MPEG-21 will recommend which new standards are required. ISO/IEC JTC 1/SC 29/WG 11 (MPEG) will then develop new standards as appropriate while other rel
28、evant standards may be developed by other bodies. These specifications will be integrated into the multimedia framework through collaboration between MPEG and these bodies. The result is an open framework for multimedia delivery and consumption, with both the content creator and content consumer as
29、focal points. This open framework provides content creators and service providers with equal opportunities in the MPEG-21 enabled open market. This will also be to the benefit of the content consumer providing them access to a large variety of content in an interoperable manner. The vision for MPEG-
30、21 is to define a multimedia framework to enable transparent and augmented use of multimedia resources across a wide range of networks and devices used by different communities. This third part of MPEG-21 (ISO/IEC 21000-3) specifies how Digital Items (see ISO/IEC 21000-2) and parts and collections t
31、hereof can be uniquely identified. INTERNATIONAL STANDARD ISO/IEC 21000-3:2003(E) ISO/IEC 2003 All rights reserved 1Information technology Multimedia framework (MPEG-21) Part 3: Digital Item Identification 1 Scope This third part of MPEG-21 (ISO/IEC 21000-3), entitled Digital Item Identification (DI
32、I), specifies How to uniquely identify Digital Items (and parts thereof); How to uniquely identify IP related to the Digital Items (and parts thereof), for example abstractions; How to uniquely identify Description Schemes; The relationship between Digital Items (and parts thereof) and existing iden
33、tification systems. Annex C contains a list of relevant identification systems. This is not an exhaustive list and is subject to change over time; The relationship between Digital Items (and parts thereof) and relevant description schemes. Annex C contains a list of relevant description schemes. Thi
34、s is not an exhaustive list and is subject to change over time. ISO/IEC 21000-3 specification does not specify: New identification systems for the content elements for which identification and description schemes already exist and are in use (e.g., ISO/IEC 21000-3 does not attempt to replace the ISR
35、C, as defined in ISO 3901, for sound recordings; Normative description schemes for describing content. 1.1 Organisation of the Document This specification contains five Clauses and four Annexes: The remainder of this Clause 1 contains an overview of MPEG-21 Digital Items and the relation between par
36、ts 2 and 3 of ISO/IEC 21000. Clauses 2 and 3 contain normative references and a list of applicable terms and definitions. Clause 4 specifies how to uniquely identify Digital Items, how to associate related identifiers with Digital Items, how to identify different types of Digital Items. Clause 0 the
37、n specifies how to associate metadata with Digital Items by using description scheme identifiers. The normative Annex A contains criteria that need to be fulfilled by a registration authority that is required for the identification of Digital Items and their parts as specified in ISO/IEC 21000-3. An
38、nex B contains an informative example of how to resolve a unique identifier to appropriate metadata. Annex C contains an informative list of existing identification schemes that can be used by this specification. Finally, Annex D contains information of patent statements relating to this specificati
39、on. ISO/IEC 21000-3:2003(E) 2 ISO/IEC 2003 All rights reserved1.2 Introduction to Digital Items Within any system (such as MPEG-21) that proposes to facilitate a wide range of actions involving “Digital Items”, there is a need for a very precise description for defining exactly what constitutes such
40、 an “item”. Clearly there are many kinds of content, and probably just as many possible ways of describing it to reflect its context of use. This presents a strong challenge to lay out a powerful and flexible model for Digital Items which can accommodate the myriad forms that content can take (and t
41、he new forms it will assume in the future). Such a model is only truly useful if it yields a format that can be used to represent any Digital Items defined within the model unambiguously and communicate them, and information about them, successfully. The Digital Item Declaration specification (ISO/I
42、EC 21000-2) provides such flexibility for representing Digital Items. 1.3 Example of a Digital Item This sub-clause provides a simple example of a Digital Item. More complex examples can be found in ISO/IEC 21000-2. This example uses ISO/IEC 21000 to create an “MPEG-21 Music Album“ comprising a seri
43、es of resources: Three audio files (coded in MPEG-2 AAC1), representing the “tracks“ that form the basis of the album; Two text files (in Unicode2), representing the lyrics to two of the tracks; Two images (in JPEG3), representing the cover photograph and other artwork of the album; A text file (in
44、HTML4), representing the introductory text for the album. The relationship between these resources and how they relate to the Digital Item itself is expressed in the Digital Item Declaration (DID5). The DID contains, besides the references to the resources, information about the item and/or parts th
45、ereof. These metadata elements are associated through DID mechanisms to the item/resources as shown in Figure 1 overleaf. 1.4 Relationship between Digital Item Declaration and Digital Item Identification Identifiers covered by this specification can be associated with Digital Items, containers, comp
46、onents, and/or fragments thereof by including them in a specific place in the Digital Item Declaration. This place is the STATEMENT element. Examples of likely STATEMENTs include descriptive, control, revision tracking and/or identifying information. Figure 2 overleaf shows this relationship. The sh
47、aded boxes are subject of this specification while the bold boxes are defined in ISO/IEC 21000-2. Several elements within a Digital Item Declaration can have zero, one or more DESCRIPTORs (as specified in ISO/IEC 21000-2). Each DESCRIPTOR may contain one STATEMENT which can contain one identifier re
48、lating to the parent element of the STATEMENT. In Figure 2, the two statements shown are used to identify a Component (left hand side of the diagram) and an Item (right hand side of the diagram). 1) As specified in ISO/IEC 13818-3. 2) As specified in ISO 10646. 3) As specified in ISO/IEC 10918. 4) A
49、s specified in W3Cs HTML 4.0 Specification. 5) As specified in ISO/IEC 21000-2. ISO/IEC 21000-3:2003(E) ISO/IEC 2003 All rights reserved 3Identifiers:- IRSC- ISMNDescripions:- Title- Composer- Lyricist- Duration- SingerMPEG-21Music Albumtrack3.aactrack1.aac track2.aaclyrics1.aac lyrics2.aaccovernotes.htmlcover.jpgbackcover.jpgmeta-datameta-datameta-datameta-datameta-datameta-dataFigure 1 MPEG-21 Music Album ItemItem DescriptorDescriptor ItemItem ItemDescriptorCompon
