ISO/IEC 21000-3:2003

INTERNATIONAL ISO/IEC
STANDARD 21000-3
First edition
2003-04-01
Information technology — Multimedia
framework (MPEG-21) —
Part 3:
Digital Item Identification
Technologies de l'information — Cadre multimédia (MPEG-21) —
Partie 3: Identification des éléments digitaux

Reference number
©
ISO/IEC 2003
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©  ISO/IEC 2003
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ii © ISO/IEC 2003 — All rights reserved

Contents 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 Associated 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 . 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 Item 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 (normative) 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 Registration 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 Considerations 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
© ISO/IEC 2003 — All rights reserved iii

C.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 of Audiovisual works – V-ISAN.23
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 International Standard Work Code – ISWC.25
C.14 INteroperability of Data in E-Commerce Systems – INDECS.26
C.15 ONline Information eXchange – ONIX International .26
C.16 URL-based Identification Schemes.27
Annex D (informative) Patent statements.29
Bibliography.30

iv © ISO/IEC 2003 — All rights reserved

Foreword
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 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 take 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 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 Technical 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 Strategy
 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 be added in the future.

© ISO/IEC 2003 — All rights reserved v

Executive 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 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 relevant 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 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-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 thereof can be uniquely identified.

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