1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationTerrestrial digital multimedia broadcasting (T-DMB) receiversPart 2: Interactive data services using BIFSBS EN 62516-2:2011National forewordThis British Standard is the UK implem
2、entation of EN 62516-2:2011. It is identical to IEC 62516-2:2011.The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained on request to its secretary.T
3、his publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011ISBN 978 0 580 76112 6 ICS 33.160.25; 33.170Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was pu
4、blished under the authority of the Standards Policy and Strategy Committee on 30 October 2011.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 62516-2:2011EUROPEAN STANDARD EN 62516-2 NORME EUROPENNE EUROPISCHE NORM August 2011 CENELEC European Committee for Electr
5、otechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. E
6、N 62516-2:2011 E ICS 33.170 English version Terrestrial digital multimedia broadcasting (T-DMB) receivers - Part 2: Interactive data services using BIFS (IEC 62516-2:2011) Rcepteurs pour diffusion multimedia numrique terrestre (T-DMB) - Partie 2: Services de donnes interactifs utilisant le BIFS (CEI
7、 62516-2:2011) Empfnger fr terrestrischen Multimediadigitalrundfunk (T-DMB) - Teil 2: Interaktive Datendienste unter Verwendung von BIFS (IEC 62516-2:2011) This European Standard was approved by CENELEC on 2011-08-15. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations whic
8、h stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European
9、Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the n
10、ational electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
11、Spain, Sweden, Switzerland and the United Kingdom. BS EN 62516-2:2011EN 62516-2:2011 Foreword The text of document 100/1745/CDV, future edition 1 of IEC 62516-2, prepared by technical area 1: Terminals for audio, video and data services and content, of IEC TC 100, Audio, video and multimedia systems
12、 and equipment was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62516-2:2011. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-05-15 lates
13、t date by which the national standards conflicting with the document have to be withdrawn (dow) 2014-08-15 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all
14、 such patent rights. Endorsement notice The text of the International Standard IEC 62516-2:2011 was approved by CENELEC as a European Standard without any modification. BS EN 62516-2:2011EN 62516-2:2011 Annex ZA (normative) Normative references to international publications with their corresponding
15、European publications The following referenced documents are indispensable for the 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. NOTE When an international
16、publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 62516-1 2009 Terrestrial digital multimedia broadcasting (T-DMB) receivers - Part 1: Basic requirement EN 62516-1 2009 ISO/IEC 14496-1 2004 Information technol
17、ogy - Coding of audio-visual objects - Part 1: Systems - - BS EN 62516-2:201162516-2 IEC:2011 CONTENTS 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 video services . 7 4.1 Video objects . 7 4
18、.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 Maximum service delay . . 8 4
19、.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 system and its contents
20、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 interactive BIFS stre
21、am . 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 Solution . 12 8.2 Case
22、2: Size of the IOD confined within a specific limit. . 12 8.2.1 Problem . 12 8.2.2 Solution . 12 BS EN 62516-2:201162516-2 IEC:2011 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
23、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
24、and 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 Bibliograph
25、y . 18 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 exi
26、stence 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 BS EN 62516-2:2011 6 62516-2 IEC:2011 TERRESTRIAL
27、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-DMB) r
28、eceiver. 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, Terr
29、estrial 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 definition
30、s 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 com
31、posed 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 3.1.
32、5 random access capability of receiving a service from an arbitrary point in its timeline rather than confined to progressive reception from its beginning BS EN 62516-2:201162516-2 IEC:2011 7 3.1.6 video object data encoded by the video compression algorithm used for video services 3.1.7 audio objec
33、t Data encoded 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 co
34、ntrol the broadcast contents 3.2 Abbreviations BIFS Binary Format for Scene BSAC Bit scliced arithmetic coding CD Compact Disk CDMA Code Division Multiple Access DAB Digital Audio Broadcasting ES Elementary Stream ESD Event Summary Data IOD Initial Object Descriptor LCD Liquid Crystal Display MMS Mu
35、ltimedia Messaging Service OD Object Descriptor PAT Program Map Table PES Packetized Elementary Stream PID Packet identifier / Program identifier PMT Program Map Table PNG Portable Network Graphics SMS Short Message Service LS Sync Layer T DBM Terrestrial digital Multimedia Broadcasting TS Transport
36、 Stream UCC User Created Contents VCD Video Compact Disk VRML Virtual Reality Markup Language WiBro Wireless Broadband 4 Requirements for video services 4.1 Video objects 4.1.1 Video format The maximum pixel resolution that video service shall support is 352 288 at 30 fps. 4.1.2 Video quality Video
37、service shall provide VCD-quality video on 7-inch LCD displays. 4.1.3 Video random access The interval between any two adjacent video random access points shall not exceed 2 s. BS EN 62516-2:2011 8 62516-2 IEC:2011 4.2 Audio objects 4.2.1 Audio format The audio associated with the video (hereafter c
38、alled “associated audio”) shall support a stereo audio signal with the maximum sampling rate of 48 kHz. 4.2.2 Audio quality The associated audio shall support up to CD-quality audio. The quality of the associated audio shall be better than that of analog FM audio. 4.2.3 Audio random access The inter
39、val between any two adjacent audio random access points shall be within 50 ms. 4.3 Auxiliary data 4.3.1 Service format Supplemental information and interactive services shall be provided. 4.3.2 Random access The interval between any two adjacent random access points for auxiliary data services shall
40、 be within 0,5 s. 4.4 Service delay 4.4.1 Maximum service delay The power-up delay shall be no greater than 2 s. NOTE The delay does not include the start-up time of the operating system in the receiver. 4.4.2 Delay between audio-visual objects To secure synchronization of audio, video and auxiliary
41、 data the delay between audio-visual objects shall be kept as small as possible. The delay of audio objects related to corresponding video objects shall not exceed 20 ms to +40 ms. The delay of auxiliary data related to corresponding video objects shall not exceed 300 ms to +300 ms. 4.4.3 Channel ch
42、ange delay The channel change delay shall be no greater than 1,5 s. NOTE When channels are changed with the same ensemble, the channel change delay shall not exceed 1 s. 5 Specification of auxiliary data 5.1 General Auxiliary data specification shall be selectively used only when auxiliary informati
43、on is transported or interactive services are provided. BS EN 62516-2:201162516-2 IEC:2011 9 5.2 Scene description specification Scene description specification complies with Core2DLevel 1 defined in ISO/IEC 14496-1. 5.3 Graphic data specification Graphic data specification complies with Core2DLevel
44、 1 defined in ISO/IEC 14496-1. The character codes used for “Text” nodes shall be basic characters used in the T-DMB. 6 BIFS for interactive broadcasting in T-DMB 6.1 Structure of the system and its contents 6.1.1 System structure T-DMB system shall transmit MPEG-4 contents multiplexed by the MPEG-2
45、 TS through the DAB stream mode channel. 6.1.2 Contents structure The MPEG-4 contents shall comprise two kinds of service audio/video broadcasting: basic OD, basic BIFS, audio, and video, interactive broadcasting using BIFS: basic OD, basic BIFS, audio, video + interactive OD, interactive BIFS, JPEG
46、/JPEG-2000, PNGs. NOTE 1 Basic OD and basic BIFS designate respectively the OD and the BIFS for audio/video broadcasting only. NOTE 2 “/” means “and/or”. 6.2 Service examples 6.2.1 Interactive broadcasting service The interactive broadcasting using BIFS (hereafter called “interactive BIFS broadcasti
47、ng”) is defined in Figure 1. IEC 1589/11 Interactive data + audio/video program = Interactive T-DMB service Figure 1 Interactive BIFS broadcasting In the interactive BIFS broadcasting, various types of services shall be possible. BS EN 62516-2:2011 10 62516-2 IEC:2011 6.2.2 One-way interactive servi
48、ce One-way interactive service shall provide the reception of interactive data through broadcast networks while users are watching T-DMB audio/video broadcasting as follows. Introduction of outline, characters and background of the drama. Introduction of singers, lyrics and disc information in the m
49、usic broadcasting. Introduction of athletes, their records and schedules in sports games. 6.2.3 Bidirectional interactive service Bidirectional interactive service shall provide to users high quality services that enable the reception of interactive data by the connection to bidirectional channels, such as CDMA, WiBro, etc., while watching T-DMB audio/video broadcasting as follows. Webpage connection service: the service provides abundant web data by the connection to web pag
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1