1、 Reference numberISO/IEC 14496-28:2012(E)ISO/IEC 2012 INTERNATIONAL STANDARD ISO/IEC14496-28First edition2012-05-01 Information technology Coding of audio-visual objects Part 28:Composite font representation Technologies de linformation Codage des objets audiovisuels Partie 28:Reprsentation de la po
2、lice de caractres composite ISO/IEC 14496-28:2012(E)COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2012 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 per
3、mission in writing from either ISO at the address 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.org Web www.iso.org Published in Switzerland ii ISO/IEC 2012 All rights res
4、erved ISO/IEC 14496-28:2012(E)ISO/IEC 2012 All rights reserved iii Contents Page Foreword.iv1Scope.12Normative references.13Abbreviated terms.14The Composite Font Representation format.24.1Description.24.2Filenames.24.3Syntax and data types.25The Composite Font Representation structure.25.1High-leve
5、l overview.25.2The PosingFont element.25.3The Name element.35.4The FontMetrics element.35.5The Components element.65.6The LanguagePreferredList element.65.7The LanguagePreferredComponentDef element.65.8The Language element.65.9The ComponentDef element.75.10The Tracking element.75.11The Matrix elemen
6、t.75.12The UnicodeCharSet element.85.13The cmapOverride element.85.14The map element.85.15The ToUnicode element.85.16The mapChar element.9Annex A(normative)Composite Font Representation Document Type Definition.10Annex B(informative)Composite Font Representation Examples.13Bibliography.22 ISO/IEC 14
7、496-28:2012(E)iv ISO/IEC 2012 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 developm
8、ent 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
9、 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 techni
10、cal 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.Attention is drawn t
11、o the possibility that some of the elements of this document may be the subject of patent rights.ISO and IEC shall not be held responsible for identifying any or all such patent rights.ISO/IEC 14496-28 was prepared by Joint Technical Committee ISO/IEC JTC 1,Information technology,Subcommittee SC 29,
12、Coding of audio,picture,multimedia and hypermedia information.ISO/IEC 14496 consists of the following parts,under the general title Information technology Coding of audio-visual objects:Part 1:Systems Part 2:Visual Part 3:Audio Part 4:Conformance testing Part 5:Reference software Part 6:Delivery Mul
13、timedia Integration Framework(DMIF)Part 7:Optimized reference software for coding of audio-visual objects Part 8:Carriage of ISO/IEC 14496 contents over IP networks Part 9:Reference hardware description Part 10:Advanced Video Coding Part 11:Scene description and application engine Part 12:ISO base m
14、edia file format Part 13:Intellectual Property Management and Protection(IPMP)extensions Part 14:MP4 file format Part 15:Advanced Video Coding(AVC)file format Part 16:Animation Framework eXtension(AFX)ISO/IEC 14496-28:2012(E)ISO/IEC 2012 All rights reserved v Part 17:Streaming text format Part 18:Fo
15、nt compression and streaming Part 19:Synthesized texture stream Part 20:Lightweight Application Scene Representation(LASeR)and Simple Aggregation Format(SAF)Part 21:MPEG-J Graphics Framework eXtensions(GFX)Part 22:Open Font Format Part 23:Symbolic Music Representation Part 24:Audio and systems inter
16、action Part 25:3D Graphics Compression Model Part 26:Audio conformance Part 27:3D Graphics conformance Part 28:Composite font representation INTERNATIONAL STANDARD ISO/IEC 14496-28:2012(E)ISO/IEC 2012 All rights reserved 1 Information technology Coding of audio-visual objects Part 28:Composite font representation 1 Scope This part of ISO/IEC 14496 specifies the Composite Font Representation,an XML-based document format that allows combining individual component font resources into a single virtu
