1、 IEC 61883-7 Edition 1.0 2003-01 INTERNATIONAL STANDARD NORME INTERNATIONALE Consumer audio/video equipment Digital interface Part 7: Transmission of ITU-R BO.1294 System B Matriel audio/vido grand public Interface numrique Partie 7: Transmission du Systme B de lUIT-R BO.1294 IEC 61883-7:2003 THIS P
2、UBLICATION IS COPYRIGHT PROTECTED Copyright 2003 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 and microfilm, without permission in writ
3、ing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further info
4、rmation. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de la CEI ou du Comit natio
5、nal de la CEI du pays du demandeur. Si vous avez des questions sur le copyright de la CEI ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de la CEI de votre pays de rsidence. IEC Central Office Tel.: +41 22 919
6、 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related techno
7、logies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. Useful links: IEC publications search - www.iec.ch/searchpub The advanced sear
8、ch enables you to find IEC publications by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published
9、details all new publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in addit
10、ional languages. Also known as the International Electrotechnical Vocabulary (IEV) on-line. Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. A propos de la CEI La
11、Commission Electrotechnique Internationale (CEI) est la premire organisation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications CEI Le contenu technique des publications de la CEI est co
12、nstamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Liens utiles: Recherche de publications CEI - www.iec.ch/searchpub La recherche avance vous permet de trouver des publications CEI en utilisant diffrents critres (numro de
13、rfrence, texte, comit dtudes,). Elle donne aussi des informations sur les projets et les publications remplaces ou retires. Just Published CEI - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications de la CEI. Just Published dtaille les nouvelles publications parues. Disponible
14、en ligne et aussi une fois par mois par email. Electropedia - www.electropedia.org Le premier dictionnaire en ligne au monde de termes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans les langues additionnelles
15、. Egalement appel Vocabulaire Electrotechnique International (VEI) en ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 61883-7 Edition 1.0 2003-01 INTERNATIONAL STANDARD NORME I
16、NTERNATIONALE Consumer audio/video equipment Digital interface Part 7: Transmission of ITU-R BO.1294 System B Matriel audio/vido grand public Interface numrique Partie 7: Transmission du Systme B de lUIT-R BO.1294 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE N
17、 ICS 33.160.01; 35.200 PRICE CODE CODE PRIX ISBN 978-2-83220-236-4 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veui
18、llez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 61883-7 IEC:2003 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references . 5 3 Terms, definitions and abbreviations 5 3.1 Terms and definitions 5 3.2 Abbreviations 6 4 DSS transport stream . 6 5 Construction of an I
19、EEE 1394 packet . 8 5.1 Source packets . 8 5.2 Isochronous packets . 10 6 Transmission of isochronous packets . 11 6.1 Late packets 11 Annex A (normative) Buffer size for DSS transmission 12 Figure 1 Steps in the transmission of transport stream . 7 Figure 2 DSS stream processing block diagram . 7 F
20、igure 3 Structure of a source packet 8 Figure 4 DSS packet header structure . 8 Figure 5 Structure of the source packet header 9 Figure 6 FDF structure . 11 Table 1 Fields in the DSS packet header . 9 Table 2 Fields in the CIP header 10 Table A.1 Buffer for jitter example 13 Table A.2 Buffer for MPE
21、G smoothing example 13 61883-7 IEC:2003 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CONSUMER AUDIO/VIDEO EQUIPMENT DIGITAL INTERFACE Part 7: Transmission of ITU-R BO.1294 System B FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization compri
22、sing all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes Internationa
23、l Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. Th
24、e IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consens
25、us of opinion on the relevant subjects since each technical committee has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports o
26、r guides and they are accepted by the National Committees in that sense. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence betw
27、een the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attenti
28、on is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. IEC 61883-7 has been prepared by technical area 4, Digital system interfaces, of IEC techn
29、ical committee 100: Audio, video and multimedia systems and equipment. This bilingual version (2012-08) corresponds to the monolingual English version, published in 2003-01. The text of this standard is based on the following documents: FDIS Report on voting 100/558/FDIS 100/610/RVD Full information
30、 on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. International Standard IEC 61883 consi
31、sts of the following parts under the general title Consumer audio/video equipment Digital interface: Part 1: General Part 2: SD-DVCR data transmission Part 3: HD-DVCR data transmission Part 4: MPEG2-TS data transmission 4 61883-7 IEC:2003 Part 5: SDL-DVCR data transmission Part 6: Audio and music da
32、ta transmission protocol Part 7: Transmission of ITU-R BO.1294 System B The committee has decided that the contents of this publication will remain unchanged until 2004. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 61883-7 IEC:2003 5 CONSUM
33、ER AUDIO/VIDEO EQUIPMENT DIGITAL INTERFACE Part 7: Transmission of ITU-R BO.1294 System B 1 Scope This specification defines packetization and transmission for transport streams of ITU-R BO.1294 system B (DirecTV system/DSS) over the IEEE 1394 Serial Bus. 2 Normative references The following referen
34、ced 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. IEC 61883-1, Consumer audio/video equipment Digital interface Part 1:
35、General ITU-R BO.1294:1997, Common functional requirements for the reception of digital multi- programme television emissions by satellites operating in the 11/12 GHz frequency range 1IEEE 1394:1995, Standard for a High Performance Serial Bus IEEE 1394a:2000, Standard for a High Performance Serial B
36、us Amendment 1 3 Terms, definitions and abbreviations For the purposes of this part of IEC 61883, the following terms and definitions apply. 3.1 Terms and definitions For the purposes of this part of IEC 61883, the following terms and definitions apply. 3.1.1 byte eight bits of data, used as a synon
37、ym for octet NOTE The symbol for byte is B. 3.1.2 CSR architecture convenient abbreviation of the following reference: ISO/IEC 13213:1994, Information technology Microprocessor systems Control and status register (CSR) architecture for microcomputer buses 3.1.3 quadlet four bytes of data 1In this do
38、cument, the name “DSS” is used instead of ITU-R BO.1294 system B. 6 61883-7 IEC:2003 3.2 Abbreviations For the purpose of this part of IEC 61883, the following abbreviations used in IEEE 1394 apply: AV/C Audio Video Control CIP Common Isochronous Packet CTR Cycle Time Register HD High Definition IEE
39、E The Institute of Electrical and Electronics Engineers, Inc. MPEG Motion Picture Expert Group TSP Transport Stream Package 4 DSS transport stream A DSS transport stream consists of transport stream packets with a length of 130 B. NOTE Refer to Annex 1 of ITU-R BO.1294: 1997 for more information. A
40、stream may contain several programs. In Figure 1, an example is given of a transport stream, which consists of several programs. Often, only one or a few programs need to be transmitted. If a program selection is carried out, then only those transport stream packets from that particular transport st
41、ream are transmitted. In this situation, the occupied bandwidth on the IEEE 1394 interface can be reduced. Reduction of the bit rate is carried in a smoothing buffer. As a result of the smoothing operation, the transport stream packets will be shifted in time. The transport stream packets at the out
42、put of the smoothing buffer are transmitted over the IEEE 1394 interface. During transmission, this interface will introduce some jitter on the arrival time of the transport stream packets in the receiver. In the DSS transport stream, there are strong requirements on the timing of the transport stre
43、am packets. The jitter introduced by the both the smoothing buffer and the transmitter of the interface has to be compensated. This is done by adding a time stamp to the transport stream packets: at the moment it arrives at the input of the smoothing buffer; or at the input of the digital interface,
44、 if smoothing is not applied. The receiver of the interface contains a receiver buffer, which compensates for the introduced jitter. 61883-7 IEC:2003 7 a) Complete transport stream with multiplex of programs (A,B,C,D) b) Transport stream of the selected program A with DSS packet header (=DSS source
45、packets) c) Source packets with source packet header d) Source packets at the output of the smoothing buffer e) Source packets at the input of the 1394 receiver f) Reconstructed timing for the transport stream NOTE The clock frequency for transferring the bytes of a transport stream packet may be di
46、fferent in every situation Figure 1 Steps in the transmission of transport stream Figure 2 shows how the DSS stream is processed between the original multiplex signal, the IEEE 1394 interface and the decoder. Transmitter Smoothing buffer Receiving buffer Timing recovery (de- smoother) 1394 DSS and s
47、ource packet headers added Smoothing buffer evens the interval between packets Arbitrate for bus and transmit data Re- construction of original timing Original multiplex signal Demux Add headers a) c) d) e) T-STD f)Figure 2 DSS stream processing block diagram IEC 3100/02 IEC 3101/02 8 61883-7 IEC:20
48、03 5 Construction of an IEEE 1394 packet 5.1 Source packets 5.1.1 Structure of a source packet The length of the source packet is 140 B as shown in Figure 3. The source packet consists of one DSS transport stream packet with a length of 130 B and a DSS packet header of 10 B. The source packet header
49、 is additionally added before transmission to the smoothing buffer. The source packet header contains a time stamp. Source packet header (4 B) DSS packet header (10 B) DSS source packet (140 B) DSS transport stream packet (130 B)Figure 3 Structure of a source packet 5.1.2 DSS packet header Figure 4 shows the structure of a DSS packet header. msb lsb MSB SIF System Clock Count
