1、 IEC 62516-2 Edition 1.0 2011-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Terrestrial digital multimedia broadcasting (T-DMB) receivers Part 2: Interactive data services using BIFS Rcepteurs pour diffusion multimdia numrique terrestre (T-DMB) Partie 2: Services de donnes interactifs utilisant le
2、BIFS IEC 62516-2:2011 colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC, Geneva, Switzerland 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
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16、ions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62516-2 Edition 1.0 2011-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Terrestrial digital multimedia broadcasting (T-DMB) receivers Part 2: Interactive data services using BI
17、FS Rcepteurs pour diffusion multimdia numrique terrestre (T-DMB) Partie 2: Services de donnes interactifs utilisant le BIFS INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE R ICS 33.170 PRICE CODE CODE PRIX ISBN 978-2-88912-582-1 Registered trademark of the Intern
18、ational Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale colour inside 2 62516-2 IEC:2011 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative references . 6 3 Terms, definitions and abbreviations 6 3.1 Terms and definitions 6 3.2 Abbreviations 7 4 Requirements for
19、video services . 7 4.1 Video objects 7 4.1.1 Video format 7 4.1.2 Video quality . 7 4.1.3 Video random access 7 4.2 Audio objects 8 4.2.1 Audio format 8 4.2.2 Audio quality . 8 4.2.3 Audio random access 8 4.3 Auxiliary data 8 4.3.1 Service format . 8 4.3.2 Random access . 8 4.4 Service delay 8 4.4.1
20、 Maximum service delay . 8 4.4.2 Delay between audio-visual objects . 8 4.4.3 Channel change delay . 8 5 Specification of auxiliary data . 8 5.1 General . 8 5.2 Scene description specification . 9 5.3 Graphic data specification . 9 6 BIFS for interactive broadcasting in T-DMB 9 6.1 Structure of the
21、system and its contents 9 6.1.1 System structure . 9 6.1.2 Contents structure . 9 6.2 Service examples 9 6.2.1 Interactive broadcasting service 9 6.2.2 One-way interactive service . 10 6.2.3 Bidirectional interactive service . 10 6.2.4 Broadcast-participation service 10 7 Structure of the PMT in the
22、 interactive BIFS stream . 10 7.1 General . 10 7.2 Structure of the PMT in the basic audio/video broadcasting . 11 7.3 Structure of the PMT in the interactive BIFS stream 11 8 Cases for terminal malfunction and solutions 11 8.1 Case 1: No interpretation on the IOD . 11 8.1.1 Problem . 11 8.1.2 Solut
23、ion . 12 8.2 Case 2: Size of the IOD confined within a specific limit 12 8.2.1 Problem . 12 8.2.2 Solution . 12 62516-2 IEC:2011 3 8.3 Case 3: On the assumption that the PMT is transmitted in one TS packet . 13 8.3.1 Problem . 13 8.3.2 Solution . 13 8.4 Case 4: Existence of two or more OD streams in
24、 the IOD 13 8.4.1 Problem . 13 8.4.2 Solution . 13 9 Example of BIFS in case of broadcast in a combination of a single audio object and a single video object 14 9.1 Case of a single audio object in a broadcast stream 14 9.1.1 VRML syntax . 14 9.1.2 Coded data 14 9.2 Case of a single audio object and
25、 a single video object in a broadcast stream 14 9.2.1 VRML syntax . 14 9.2.2 Coded data 14 10 Example of initiation procedure for audio/video service in an interactive BIFS stream 15 11 Example of the stream dependency scheme for interactive BIFS stream of broadcasting stations . 16 Bibliography 18
26、Figure 1 Interactive BIFS broadcasting 9 Figure 2 Changes of the PMT structure in the interactive BIFS broadcasting . 11 Figure 3 Case of no interpretation on IOD 12 Figure 4 Case of expanded IOD in length . 12 Figure 5 Case of PMT comprised of two or more TS packets . 13 Figure 6 Case of existence
27、of descriptions about two or more OD streams in IOD . 13 Figure 7 Example of approach process for audio/video service in interactive BIFS stream 16 Figure 8 Example of stream dependency establishment forms between two broadcasting stations 16 4 62516-2 IEC:2011 INTERNATIONAL ELECTROTECHNICAL COMMISS
28、ION _ TERRESTRIAL DIGITAL MULTIMEDIA BROADCASTING (T-DMB) RECEIVERS Part 2: Interactive data services using BIFS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committee
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39、Standard IEC 62516-2 has been prepared by by technical area 1: Terminals for audio, video and data services and content, of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: CDV Report on voting 100/1745/CDV
40、 100/1809/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 62516-2 IEC:2011 5 The committee has decided that the contents of thi
41、s publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be transformed into an International standard, reconfirmed, withdrawn, replaced by a revised ed
42、ition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 6 62516-2 IEC:2011 TERRESTR
43、IAL DIGITAL MULTIMEDIA BROADCASTING (T-DMB) RECEIVERS Part 2: Interactive data services using BIFS 1 Scope This part of IEC 62516 specifies the characteristics and requirements for interactive data services using binary format for scene (BIFS) in the terrestrial digital multimedia broadcasting (T-DM
44、B) receiver. 2 Normative references The following referenced documents are indispensable to application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62516-1:2009,
45、Terrestrial digital multimedia broadcasting (T-DMB) receivers Part 1: Basic requirement ISO/IEC 14496-1:2004, Information technology Coding of audio-visual objects Part 1: Systems 3 Terms, definitions and abbreviations 3.1 Terms and definitions For the purposes of this document, the terms and defini
46、tions given in IEC 62516-1 and the following apply. 3.1.1 service requirements basic conditions that the T-DMB service should satisfy 3.1.2 video service service composed of basic video provided by the T-DMB, and audio associated with the video and optional auxiliary data 3.1.3 audio service service
47、 composed of speech and audio possibly with auxiliary data produced by the audio compression algorithm and the multiplexing method 3.1.4 data service service that delivers any information in digital format, which is independent from video and audio services that the T-DMB provides as basic services
48、3.1.5 random access capability of receiving a service from an arbitrary point in its timeline rather than confined to progressive reception from its beginning 62516-2 IEC:2011 7 3.1.6 video object data encoded by the video compression algorithm used for video services 3.1.7 audio object Data encoded
49、 by the audio compression algorithm used for video services 3.1.8 auxiliary data data encoded by the auxiliary data compression algorithm used for video services NOTE Examples are scene description data and graphic data. 3.1.9 interactive service service in which users can select or control the broadcast contents 3.2 Abbreviations BIFS Binary Format for Scene BSAC Bit scliced arithmetic coding CD Compa
