1、 Reference numberISO/IEC 15938-1:2002(E)ISO/IEC 2002Information technology Multimedia content description interface Part 1: Systems Technologies de linformation Interface de description du contenu multimdia Partie 1: Systmes National Standard of CanadaCAN/CSA-ISO/IEC 15938-1:04(ISO/IEC 15938-1:2002)
2、International Standard ISO/IEC 15938-1:2002 (first edition, 2002-07-01) has been adopted without modification(IDT) as CSA Standard CAN/CSA-ISO/IEC 15938-1:04, which has been approved as a National Standard of Canadaby the Standards Council of Canada.ISBN 1-55397-315-1 January 2004The Canadian Standa
3、rds Association (CSA), The Standards Council of Canada is theunder whose auspices this National Standard has been coordinating body of the National Standards system, produced, was chartered in 1919 and accredited by a federation of independent, autonomousthe Standards Council of Canada to the Nation
4、al organizations working towards the furtherStandards system in 1973. It is a not-for-profit, development and improvement of voluntarynonstatutory, voluntary membership association standardization in the national interest.engaged in standards development and certification The principal objects of th
5、e Council are to foster activities. and promote voluntary standardization as a means CSA standards reflect a national consensus of of advancing the national economy, benefiting theproducers and users including manufacturers, health, safety, and welfare of the public, assisting consumers, retailers,
6、unions and professional and protecting the consumer, facilitating domestic organizations, and governmental agencies. The and international trade, and furthering internationalstandards are used widely by industry and commerce cooperation in the field of standards.and often adopted by municipal, provi
7、ncial, and A National Standard of Canada is a standard whichfederal governments in their regulations, particularly in has been approved by the Standards Council ofthe fields of health, safety, building and construction, Canada and one which reflects a reasonableand the environment. agreement among t
8、he views of a number of capableIndividuals, companies, and associations across individuals whose collective interests provide to theCanada indicate their support for CSAs standards greatest practicable extent a balance ofdevelopment by volunteering their time and skills to representation of producer
9、s, users, consumers, andCSA Committee work and supporting the Associations others with relevant interests, as may be appropriateobjectives through sustaining memberships. The more to the subject in hand. It normally is a standardthan 7000 committee volunteers and the 2000 which is capable of making
10、a significant and timelysustaining memberships together form CSAs total contribution to the national interest.membership from which its Directors are chosen. Approval of a standard as a National Standard ofSustaining memberships represent a major source of Canada indicates that a standard conforms t
11、o theincome for CSAs standards development activities. criteria and procedures established by the StandardsThe Association offers certification and testing Council of Canada. Approval does not refer to theservices in support of and as an extension to its technical content of the standard; this remai
12、ns thestandards development activities. To ensure the continuing responsibility of the accreditedintegrity of its certification process, the Association standards-development organization.regularly and continually audits and inspects products Those who have a need to apply standards arethat bear the
13、 CSA Mark. encouraged to use National Standards of CanadaIn addition to its head office and laboratory complex whenever practicable. These standards are subject in Toronto, CSA has regional branch offices in major to periodic review; therefore, users are cautioned centres across Canada and inspectio
14、n and testing to obtain the latest edition from the organizationagencies in eight countries. Since 1919, the preparing the standard.Association has developed the necessary expertise to The responsibility for approving National Standards meet its corporate mission: CSA is an independent of Canada res
15、ts with theservice organization whose mission is to provide an Standards Council of Canadaopen and effective forum for activities facilitating the 270 Albert Street, Suite 200exchange of goods and services through the use of Ottawa, Ontario, K1P 6N7standards, certification and related services to me
16、et Canadanational and international needs.For further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100Mississauga, Ontario, L4W 5N6CanadaAlthough the intended primary application of this Standard is stated in its Scope, it is importantto note that it re
17、mains the responsibility of the users to judge its suitability for their particular purpose.Registered trade-mark of Canadian Standards AssociationICS 35.040 Ref. No. ISO/IEC 15938-1:2002/Cor.2:2005(E) ISO/IEC 2005 All rights reserved INTERNATIONAL STANDARD ISO/IEC 15938-1:2002 TECHNICAL CORRIGENDUM
18、 2 Published 2005-11-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATIONINTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION LECTROTECHNIQUE INTERNATIONALEInformation technology Multimedia content description interface Part 1: Systems TECHNICAL CORRIGENDUM
19、2 Technologies de linformation Interface de description du contenu multimdia Partie 1: Systmes RECTIFICATIF TECHNIQUE 2 Technical Corrigendum 2 to ISO/IEC 15938-1:2002 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multi
20、media and hypermedia information. Technical Corrigendum 2:2006 toNational Standard of CanadaCAN/CSA-ISO/IEC 15938-1:04Technical Corrigendum 2:2005 to International Standard ISO/IEC 15938-1:2002 has been adopted withoutmodification (IDT) as Technical Corrigendum 2:2006 to CAN/CSA-ISO/IEC 15938-1:04.
21、This TechnicalCorrigendum was reviewed by the CSA Technical Committee on Information Technology (TCIT) under thejurisdiction of the Strategic Steering Committee on Information Technology and deemed acceptable for use inCanada.December 2006ISO/IEC 15938-1:2002/Cor.2:2005(E) 2 ISO/IEC 2005 All rights
22、reservedReplace the first paragraph in subclause 7.1: The following subclauses specify the syntax elements and associated semantics of the binary format for ISO/IEC 15938 descriptions, abbreviated BiM. The binary DecoderInit (7.2), the binary access unit (7.3), the binary fragment update unit (7.4)
23、and its constituent parts, the binary fragment update command (7.5) and binary fragment update context (7.6) are covered by Clause 7. The specification of the binary fragment update payload follows in Clause 8. with: The following subclauses specify the syntax elements and associated semantics of th
24、e binary format for ISO/IEC 15938 descriptions, abbreviated BiM. The binary DecoderInit (7.2), the binary access unit (7.3), the binary fragment update unit (7.4) and its constituent parts, the binary fragment update command (7.5), binary fragment update context (7.6) and binary schema update unit (
25、7.7) are covered by Clause 7. The specification of the binary fragment update payload follows in Clause 8. Replace subclause 8.4.2.1 with the following text: 8.4.2.1 Syntax Mono-VersionElementContent (Enumeration ChildrenSchemaMode, SchemaComponent theType) Number of bits Mnemonic If (!in_AnyElement
26、Decoding) If (lengthCodingMode = “Length optionally coded“) LengthFlag 1 bslbfif (LengthFlag = 1 ) TheLength 5+ vluimsbf5 else if (lengthCodingMode = “Length always coded“ ) TheLength 5+ vluimsbf5 If (!PayloadTopLevelElement() SubstitutionCode() effectiveType = PayloadTypeCode(theType, false) else e
27、ffectiveType=theType if (effectiveType != “deferred” the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretaria
28、t at the address given below. ISO/IEC 2002 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the addr
29、ess below or ISOs member body 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.ch Web www.iso.ch ii ISO/IEC 2002 All rights reserved ISO/IEC 15938-1:2002(E) ISO/IEC 2002 All rights reserved iiiCon
30、tents Page Foreword.iv Introduction.v 1 Scope 1 2 Normative references2 3 Terms and definitions .3 3.1 Conventions .3 3.2 Definitions 6 4 Symbols and abbreviated terms 10 4.1 Abbreviations.10 4.2 Mathematical operators 10 4.3 Mnemonics .12 5 System architecture 14 5.1 Terminal architecture 14 5.2 Ge
31、neral characteristics of the decoder.14 5.3 Sequence of events during decoder initialisation .15 5.4 Decoder behaviour 16 5.5 Issues in encoding descriptions16 5.6 Differences between the TeM and BiM18 5.7 Characteristics of the delivery layer19 6 Textual Format - TeM.21 6.1 Overview.21 6.2 Textual
32、DecoderInit .21 6.3 Textual Access Unit.22 6.4 Textual Fragment Update Unit .23 6.5 Textual Fragment Update Command.23 6.6 Textual Fragment Update Context .24 6.7 Textual Fragment Update Payload.25 7 Binary format - BiM27 7.1 Overview.27 7.2 Binary DecoderInit.27 7.3 Binary Access Unit30 7.4 Binary
33、Fragment Update Unit.30 7.5 Binary Fragment Update Command 32 7.6 Binary Fragment Update Context 33 8 Binary Fragment Update Payload 49 8.1 Overview.49 8.2 Definitions 49 8.3 Fragment Update Payload syntax and semantics50 8.4 Element syntax and semantics 51 8.5 Element Content decoding process 60 An
34、nex A (informative) Informative examples .78 Annex B (informative) FUContextType definition based on W3C XPath specification81 Annex C (informative) Patent statements .83 Bibliography85 ISO/IEC 15938-1:2002(E) iv ISO/IEC 2002 All rights reserved Foreword ISO (the International Organization for Stand
35、ardization) 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 organizat
36、ion 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,
37、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 3. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopt
38、ed 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 15938-1 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcom
39、mittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 15938 consists of the following parts, under the general title Information technology Multimedia content description interface: Part 1: Systems Part 2: Description definition language Part 3: Visual Part 4: Audio
40、Part 5: Multimedia description schemes Part 6: Reference software Part 7: Conformance testing Part 8: Extraction and use of MPEG-7 descriptions Annexes A to C of this part of ISO/IEC 15938 are for information only. ISO/IEC 15938-1:2002(E) ISO/IEC 2002 All rights reserved vIntroduction This standard,
41、 also known as “Multimedia Content Description Interface,“ provides a standardized set of technologies for describing multimedia content. The standard addresses a broad spectrum of multimedia applications and requirements by providing a metadata system for describing the features of multimedia conte
42、nt. The following are specified in this standard: Description Schemes (DS) describe entities or relationships pertaining to multimedia content. Description Schemes specify the structure and semantics of their components, which may be Description Schemes, Descriptors, or datatypes. Descriptors (D) de
43、scribe features, attributes, or groups of attributes of multimedia content. Datatypes are the basic reusable datatypes employed by Description Schemes and Descriptors. Description Definition Language (DDL) defines Description Schemes, Descriptors, and Datatypes by specifying their syntax, and allows
44、 their extension. Systems tools support delivery of descriptions, multiplexing of descriptions with multimedia content, synchronization, file format, and so forth. This standard is subdivided into eight parts: Part 1 Systems: specifies the tools for preparing descriptions for efficient transport and
45、 storage, compressing descriptions, and allowing synchronization between content and descriptions. Part 2 Description definition language: specifies the language for defining the standard set of description tools (DSs, Ds, and datatypes) and for defining new description tools. Part 3 Visual: specifi
46、es the description tools pertaining to visual content. Part 4 Audio: specifies the description tools pertaining to audio content. Part 5 Multimedia description schemes: specifies the generic description tools pertaining to multimedia including audio and visual content. Part 6 Reference software: pro
47、vides a software implementation of the standard. Part 7 Conformance testing: specifies the guidelines and procedures for testing conformance of implementations of the standard. Part 8 Extraction and use of MPEG-7 descriptions: provides guidelines and examples of the extraction and use of description
48、s. INTERNATIONAL STANDARD ISO/IEC 15938-1:2002(E) ISO/IEC 2002 All rights reserved 1Information technology Multimedia content description interface Part 1: Systems 1 Scope This International Standard defines a Multimedia Content Description Interface, specifying a series of interfaces from system to
49、 application level to allow disparate systems to interchange information about multimedia content. It describes the architecture for systems, a language for extensions and specific applications, description tools in the audio and visual domains, as well as tools that are not specific to audio-visual domains. This part of ISO/IEC 15938 specifie
