IEC PAS 61883-7:2001
(Main)Consumer audio/video equipment - Digital interface - Part 7: Transmission of Rec. ITU-R BO.1294 System B Transport 1.0
Consumer audio/video equipment - Digital interface - Part 7: Transmission of Rec. ITU-R BO.1294 System B Transport 1.0
Defines packetization and transmission for transport streams of DSS (DirecTV system/DSS) over IEEE 1394-1995.
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Standards Content (Sample)
IEC/PAS 61883-7
Edition 1.0
2001-08
Consumer audio/video equipment —
Digital interface —
Part 7: Transmission of Rec. ITU-R BO. 1294
System B Transport 1.0
PUBLI C LY AVAI LABLE SPECI F I CATI O N
IN TER N A TION AL Reference number
E L E C T R OT E CHNI CA L
IEC/PAS 61883-7
C O MMI S S I O N
TA Document 1998017
Transmission of Rec. ITU-R BO.1294
System B Transport 1.0
August 18, 2000
Sponsored by:
1394 Trade Association
Accepted for Release by:
1394 Trade Association Board of Directors.
Abstract:
This specification defines packetization and transmission of the transport streams for
Recommendation ITU-R BO.1294 System B, which is known as a DirecTV/DSS system over
IEEE Std. 1394-1995. The transmission scheme is similar to the MPEG2 transmission over
IEEE std. 1394-1995, but designed for 130bytes DirecTV/DSS transport packet.
Keywords:
Audio, Video, 1394, Digital, Interface, DirecTV, DSS.
Copyright 1996-2001 by the 1394 Trade Association.
Regency Plaza Suite 350, 2350 Mission College Blvd., Santa Clara, CA 95054, USA
http://www.1394TA.org
All rights reserved.
Permission is granted to members of the 1394 Trade Association to reproduce this document for their own use or the use of other 1394 Trade
Association members only, provided this notice is included. All other rights reserved. Duplication for sale, or for commercial or for-profit use is
strictly prohibited without the prior written consent of the 1394 Trade Association.
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONSUMER AUDIO/VIDEO EQUIPMENT — DIGITAL INTERFACE —
Part 7: Transmision of Rec. ITU-R BO. 1294
System B Transport 1.0
FOREWORD
A PAS is a technical specification not fulfilling the requirements for a standard, but made
available to the public and established in an organization operating under given procedures.
IEC-PAS 61883-6 was submitted by the 1394 Trade Association and has been processed by IEC
technical committee 100: Audio, video and multimedia systems and equipment.
The text of this PAS is based on the This PAS was approved for
following document: publication by the P-members of the
committee concerned as indicated in
the following document:
Draft PAS Report on voting
100/201/PAS 100/269/RVD
Following publication of this PAS, the technical committee or subcommittee concerned will
investigate the possibility of transforming the PAS into an International Standard.
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising 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 International 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. The 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 consensus 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 reports or 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
between 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) Attention is drawn to the possibility that some of the elements of this PAS may be the subject of patent rights.
The IEC shall not be held responsible for identifying any or all such patent rights.
Page 1
1394 Trade Association Specifications are developed within Working Groups of the 1394 Trade
Association, a non-profit industry association devoted to the promotion of and growth of the market for
IEEE 1394-compliant products. Participants in working groups serve voluntarily and without
compensation from the Trade Association. Most participants represent member organizations of the
1394 Trade Association. The specifications developed within the working groups represent a consensus
of the expertise represented by the participants.
Use of a 1394 Trade Association Specification is wholly voluntary. The existence of a 1394 Trade
Association Specification is not meant to imply that there are not other ways to produce, test, measure,
purchase, market or provide other goods and services related to the scope of the 1394 Trade
Association Specification. Furthermore, the viewpoint expressed at the time a specification is accepted
and issued is subject to change brought about through developments in the state of the art and
comments received from users of the specification. Users are cautioned to check to determine that they
have the latest revision of any 1394 Trade Association Specification.
Comments for revision of 1394 Trade Association Specifications are welcome from any interested
party, regardless of membership affiliation with the 1394 Trade Association. Suggestions for changes
in documents should be in the form of a proposed change of text, together with appropriate supporting
comments.
Interpretations: Occasionally, questions may arise about the meaning of specifications in relationship to
specific applications. When the need for interpretations is brought to the attention of the 1394 Trade
Association, the Association will initiate action to prepare appropriate responses.
Comments on specifications and requests for interpretations should be addressed to:
Editor, 1394 Trade Association
Regency Plaza Suite 350
2350 Mission College Blvd.
Santa Clara, Calif. 95054, USA
1394 Trade Association Specifications are adopted by the 1394 Trade Association
without regard to patents which may exist on articles, materials or processes or to
other proprietary intellectual property which may exist within a specification.
Adoption of a specification by the 1394 Trade Association does not assume any
liability to any patent owner or any obligation whatsoever to those parties who rely
on the specification documents. Readers of this document are advised to make an
independent determination regarding the existence of intellectual property rights,
which may be infringed by conformance to this specification.
Page 2 Copyright 2001, 1394 Trade Association. All rights reserved.
Table of Contents
1. Overview .6
1.1 Purpose.6
2. References .7
3. Definitions.8
3.1 Conformance Levels .8
3.2 Glossary of Terms .8
3.3 Acronyms and Abbreviations.8
4. DSS Transport Stream .9
5. Construction of a 1394 Packet .11
5.1 Source Packets .11
5.1.1 Structure of a Source Packet.11
5.1.2 DSS Packet Header.11
5.1.3 Source Packet Header.12
5.1.4 Fractions .12
5.2 Isochronous Packets .13
5.2.1 CIP Header for DSS Transport Stream.13
5.2.2 DBC Values.13
5.2.3 FDF Data .13
6. Transmission of Isochronous Packets.15
6.1 Late Packets.15
Annex A: Buffer Size for DSS Transmission.17
Copyright 2001, 1394 Trade Association. All rights reserved. Page 3
List of Figures
Figure 4.1 – Steps in the transmission of transport stream .9
Figure 4.2 – DSS stream processing block diagram .10
Figure 5.1 – Structure of a source packet .11
Figure 5.2 – DSS packet header structure.11
Figure 5.3 – Structure of the source packet header.12
Figure 5.4 – FDF structure.14
Page 4 Copyright 2001, 1394 Trade Association. All rights reserved.
List of Tables
Table 5.1 – Fields in the DSS Packet Header.12
Table 5.2 – Fields in the CIP Header .13
Table A.1 – Buffer for jitter example.18
Table A.2 – Buffer for MPEG smoothing example.18
Copyright 2001, 1394 Trade Association. All rights reserved. Page 5
1. Overview
1.1 Purpose
This specification defines packetization and transmission for transport streams of Recommendation
ITU-R BO.1294 system B (DirecTV system/DSS) over IEEE Std. 1394-1995.
In this document, the name “DSS” is used instead of “Recommendation ITU-R BO.1294 system B”.
Page 6 Copyright 2001, 1394 Trade Association. All rights reserved.
2. References
The following standards contain provisions, which through reference in this document constitute
provisions of this standard. All the standards listed are normative references. At the time of
publication, the editions indicated were valid. All standards are subject to revision, and parties to
agreements based on this standard are encouraged to investigate the possibility of applying the most
recent editions of the standards indicated below.
[R1] IEEE Std 1394-1995, Standard for a High Performance Serial Bus.
[R2] IEC 61883-1, Consumer audio/video equipment – Digital interface – Part 1: General.
[R3] IEC 61883-4: Consumer audio/video equipment - Digital interface - Part 4: MPEG2-TS data
transmission
[R4] Recommendation ITU-R BO.1294, Common Functional Requirements for the Reception of
Digital Multiprogramme Television Emissions by Satellites Operating in the 11/12 GHz
Frequency Range, 1997
Copyright 2001, 1394 Trade Association. All rights reserved. Page 7
3. Definitions
3.1 Conformance Levels
3.1.1 expected: A key word used to describe the behavior of the hardware or software in the design
models assumed by this Specification. Other hardware and software design models may also be
implemented.
3.1.2 may: A key word that indicates flexibility of choice with no implied preference.
3.1.3 shall: A key word indicating a mandatory requirement. Designers are required to implement all
such mandatory requirements.
3.1.4 should: A key word indicating flexibility of choice with a strongly preferred alterna
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