Consumer audio/video equipment - Digital interface - Part 8: Transmission of ITU-R BT.601 style digital video data

IEC 61883-8:2008(E) specifies a protocol for the transport of uncompressed or compressed video data in the 4:2:2 format of recommendation ITU-R BT.601 (including compatible extensions to this format for the higher and lower resolutions of other commonly used video resolutions) over high performance serial bus, as specified by IEEE Std 1394-1995 as amended by IEEE Std 1394a-2000 and IEEE Std 1394b-2002 (collectively IEEE 1394). The data formats for the encapsulation of video data are compatible with those specified by IEC 61883-1. Associated audio data, if any, should be formatted as specified by IEC 61883-6.

Audio/Video-Geräte der Unterhaltungselektronik - Digitale Schnittstelle - Teil 8: Übertragung von digitalen Videodaten im Format ITU-R BT.601

Matériel audio/vidéo grand public - Interface numérique - Partie 8: Transmission de données vidéo numériques selon le modèle de l'UIT-R BT.601

L'IEC 91883-8:2008 spécifie un protocole pour le transport de données vidéo compressées ou non compressées au format 4:2:2 de la recommandation UIT-R BT.601 (y compris les extensions compatibles de ce format pour les résolutions supérieures et inférieures des autres résolutions vidéo couramment utilisées) sur le bus série à haute performance, comme cela est spécifié par l'IEEE Std 1394-1995, amendée par l'IEEE Std 1394a-2000 et l'IEEE Std 1394b-2002 (collectivement l'IEEE 1394). Les formats de données pour l'encapsulation des données vidéo sont compatibles avec ceux spécifiés par l'IEC 61883-1. Il convient, le cas échéant, de formater les données audio associées comme cela est spécifié dans l'IEC 61883-6. De nombreux formats vidéo couramment utilisés ne sont pas pris en charge par l'IEC 61883, par exemple MPEG-4, le format Windows Media (WMF) et le format utilisé dans les applications de navigation automobile. La prise en charge de la totalité ou de la majeure partie de ces formats dans les dispositifs de rendu nécessite la mise en œuvre de plusieurs codecs vidéo. Il s'agit d'une tâche superflue qui peut être évitée si le dispositif source effectue une conversion au format 4:2:2 de l'UIT-R BT.601 et, si nécessaire, une compression des données avec un codec pris en charge par tous les dispositifs de destination. Un autre avantage est que les informations d'affichage à l'écran (OSD, On-Screen Display) peuvent être mélangées avec des données vidéo avant transmission au dispositif de rendu. Etant donné que le format 4:2:2 de l'UIT-R BT.601 est largement utilisé en interne dans le matériel AV actuel, la présente spécification permet une intégration directe de l'IEEE 1394 dans ces dispositifs et ouvre des marchés dont les scénarios d'utilisation incluent des sources vidéo uniques qui transmettent vers un ou plusieurs écrans vidéo, par exemple: – la vidéo électronique STB ou DVD grand public rendue sur plusieurs affichages domestiques; – la navigation et le divertissement automobiles; et – le divertissement aéronautique en vol. Par souci d'interopérabilité et pour limiter la complexité de mise en œuvre, il est essentiel que la spécification fournisse les éléments suivants: – une liste contrôlée par la 1394 Trade Association de codecs de compression; et – au moins une référence à un codec de compression vidéo.

Porabniška avdio/video oprema - Digitalni vmesnik - 8. del: Prenos digitalnih video podatkov v obliki ITU-R BT.601 (IEC 61883-8:2008)

Ta del standarda IEC 61883 določa protokol za prenos nestisnjenih ali stisnjenih video podatkov v formatu 4:2:2 v priporočeni obliki ITU-R BT.601 (vključno s končnicami, združljivimi s to obliko zapisa, za višje in nižje ločljivosti drugih običajnih ločljivosti videa) preko visoko zmogljivega serijskega vodila, kot je določeno s standardom IEEE Std 1394-1995 in spremenjeno s standardoma IEEE Std 1394a-2000 in IEEE Std 1394b-2002 (skupaj IEEE 1394). Oblike zapisa podatkov za ovijanje video podatkov so združljive s tistimi, ki so določene s standardom IEC 61883-1. Povezani zvočni podatki, če obstajajo, naj bi bili v zapisu, določenem s standardom IEC 61883-6. Standard IEC 61883 ne podpira mnogih običajnih oblik video zapisa, kot so npr. MPEG-4, Windows Media Format (WMF) in oblika, ki jo uporabljajo aplikacije avtomobilskih navigacijskih sistemov. Podpora za vse ali večino teh oblik zapisa v napravah za upodabljanje bi zahtevala uporabo več video kodekov. To je nepotrebno breme, ki se mu je mogoče izogniti, če izvorna naprava pretvarja v obliko ITU-R BT.601 4:2:2, in če je potrebno, podatke stisne s kodekom, ki ga podpirajo vse ciljne naprave. Dodatna prednost je združevanje informacij, prikazanih na zaslonu, z video podatki pred prenosom v napravo za upodabljanje. Ker se oblika ITU-R BT.601 4:2:2 pogosto uporablja kot notranja oblika sodobne AV-opreme, ta specifikacija dovoljuje neposredno integracijo standarda IEEE 1394 v te naprave in omogoča trgom, katerih uporabniški scenariji zajemajo posamezne video vire, da oddajo enemu ali več video zaslonom, kot so:
– Video komunikatorji za zabavno elektroniko ali DVD-video, ki ga upodablja več domačih zaslonov;
– avtomobilska navigacija in zabava; in
– zabava na letalih med letom.
Zaradi medobratovalnosti in povezane zapletenosti izvedbe je nujno, da specifikacije zagotavljajo naslednje:
– seznam kodekov za stiskanje, ki ga nadzira panožno združenje 1394 TA; in
– najmanj sklic na en kodek za stiskanje videa.

General Information

Status
Published
Publication Date
21-Jan-2009
Current Stage
6060 - Document made available
Start Date
22-Jan-2009
Due Date
21-Feb-2009
Completion Date
22-Jan-2009

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SLOVENSKI STANDARD
SIST EN 61883-8:2009
01-april-2009

Porabniška avdio/video oprema - Digitalni vmesnik - 8. del: Prenos digitalnih video

podatkov v obliki ITU-R BT.601 (IEC 61883-8:2008)

Consumer audio/video equipment - Digital interface - Part 8: Transmission of ITU-R

BT.601 style digital video data (IEC 61883-8:2008)

Audio/Video-Geräte der Unterhaltungselektronik - Digitale Schnittstelle - Teil 8:

Übertragung von digitalen Videodaten im Format ITU-R BT.601 (IEC 61883-8:2008)

Matériel audio/vidéo grand public - Interface numérique - Partie 8: Transmission de

données vidéo numériques selon le modèle de l'UIT-R BT.601 (CEI 61883-8:2008)
Ta slovenski standard je istoveten z: EN 61883-8:2009
ICS:
33.160.40 Video sistemi Video systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 61883-8:2009 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 61883-8:2009
---------------------- Page: 2 ----------------------
SIST EN 61883-8:2009
EUROPEAN STANDARD
EN 61883-8
NORME EUROPÉENNE
January 2009
EUROPÄISCHE NORM
ICS 33.160.40
English version
Consumer audio/video equipment -
Digital interface -
Part 8: Transmission of ITU-R BT.601 style digital video data
(IEC 61883-8:2008)
Matériel audio/vidéo grand public - Audio/Video-Geräte
Interface numérique - der Unterhaltungselektronik -
Partie 8: Transmission de données vidéo Digitale Schnittstelle -
numériques selon le modèle Teil 8: Übertragung von digitalen
de l'UIT-R BT.601 Videodaten im Format ITU-R BT.601
(CEI 61883-8:2008) (IEC 61883-8:2008)

This European Standard was approved by CENELEC on 2008-12-01. CENELEC members are bound to comply

with the CEN/CENELEC Internal Regulations which 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 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 national electrotechnical committees of Austria, Belgium, Bulgaria, 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, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61883-8:2009 E
---------------------- Page: 3 ----------------------
SIST EN 61883-8:2009
EN 61883-8:2009 – 2 –
Foreword

The text of document 100/1446/FDIS, future edition 1 of IEC 61883-8, prepared by technical area 4,

Digital system interfaces and protocols, of IEC TC 100, Audio, video and multimedia systems and

equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as

EN 61883-8 on 2008-12-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-12-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 61883-8:2008 was approved by CENELEC as a European

Standard without any modification.
__________
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SIST EN 61883-8:2009
– 3 – EN 61883-8:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding 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 publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 61883 Series Consumer audio/video equipment - Digital EN 61883 Series
interface
IEC 61883-1 - Consumer audio/video equipment - Digital - -
interface -
Part 1: General
ISO/IEC 11172-2 1993 Information technology - Coding of moving - -
pictures and associated audio for digital
storage media at up to about 1,5 Mbit/s -
Part 2: Video
EIA/CEA-861-B 2002 A DTV Profile for Uncompressed High - -
Speed Digital Interfaces
IEEE Std 1394 1995 Standard for a High Performance Serial - -
Bus - Firewire
IEEE Std 1394a 2000 Standard for a High Performance Serial - -
Bus - Amendment 1
IEEE Std 1394b 2002 Standard for a High Performance Serial - -
Bus - Amendment 2
IEEE 1394 2003 IIDC 1394-based Digital Camera - -
Trade Association Specification - Version 1.31
2003017
IEEE 1394 2004 AV/C Digital Interface Command Set - -
Trade Association General Specification - Version 4.2
2004006
IEEE Std 1394-1 2004 Standard for High Performance Serial Bus - -
Bridges
ITU-R BT.601-5 1995 Studio encoding parameters of digital - -
television for standard 4:3 and wide-screen
16:9 aspect ratios
ITU-R BT.656-4 1998 Interfaces for digital component video - -
signals in 525-line and 625-line television
systems operating at the 4:2:2 level of
recommendation ITU-R BT.601
ITU-R BT.709-4 2000 Parameter values for the HDTV standards - -
for production and international programme
exchange
ITU-R BT.1358 1998 Studio parameters of 625 and 525 line - -
progressive scan television systems
Undated reference.
---------------------- Page: 5 ----------------------
SIST EN 61883-8:2009
EN 61883-8:2009 – 4 –
Publication Year Title EN/HD Year
ITU-T H.263 1998 Video coding for low bit rate - -
communication
SMPTE 267M 1995 Television - Bit-Parallel Digital Interface - - -
Component Video Signal 4:2:2 16x9 Aspect
Ratio
SMPTE 274M 1998 Television - 1920 × 1080 Scanning and - -
Analog and Parallel Digital Interfaces for
Multiple Picture Rates
SMPTE 293M 1996 Television - 720 × 483 Active Line at - -
59.94-Hz Progressive Scan Production -
Digital Representation
SMPTE 296M 2001 Television - 1280 × 720 Progressive Image - -
Sample Structure - Analog and Digital
Representation and Analog Interface
VESA Monitor - VESA and Industry Standards and - -
Timing Guidelines for Computer Display Monitor
Specifications Timing, Version 1.0, Revision 0.8
---------------------- Page: 6 ----------------------
SIST EN 61883-8:2009
IEC 61883-8
Edition 1.0 2008-11
INTERNATIONAL
STANDARD
Consumer audio/video equipment – Digital interface –
Part 8: Transmission of ITU-R BT.601 style digital video data
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
ICS 33.160.40 ISBN 2-8318-1018-8
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 7 ----------------------
SIST EN 61883-8:2009
– 2 – 61883-8 © IEC:2008(E)
CONTENTS

FOREWORD...........................................................................................................................4

1 Scope...............................................................................................................................6

2 Normative references .......................................................................................................6

3 Abbreviations and conventions .........................................................................................7

3.1 Abbreviations ..........................................................................................................7

3.2 Notation ..................................................................................................................8

3.2.1 Numeric values............................................................................................8

3.2.2 Bit, byte and quadlet ordering......................................................................8

4 Reference model for data transmission.............................................................................9

4.1 Model overview .......................................................................................................9

4.2 Compression .........................................................................................................10

4.3 Isochronous packet header ...................................................................................10

4.4 CIP header............................................................................................................10

4.5 Stream definition ...................................................................................................11

4.6 Packetization.........................................................................................................15

4.6.1 Source packet format ................................................................................15

4.6.2 Type 0 source packet – Video data source packet ..................................16

4.6.3 Type 1 source packet – Stream information and metadata (SIM)

source packet4 ..........................................................................................20

4.6.4 Type 2 source packet – Audio source packet..........................................27

4.7 Packet transmission method..................................................................................27

4.7.1 Packet transmission for compression mode 0 .........................................27

4.7.2 Packet transmission for compression mode 1 .........................................30

4.7.3 Packet transmission for compression mode 2 .........................................30

4.7.4 Packet transmission for compression mode FF .......................................30

Annex A (informative) Audio/video synchronization..............................................................31

Annex B (normative) Additional video mode parameters ......................................................32

Annex C (informative) Using IEC 61883-1 plug control registers beyond S400 .....................36

Annex D (normative) Compliance annex ..............................................................................37

Annex E (informative) Typical SIM source packet ................................................................38

Annex F (informative) Derivation of TRANSFER_DELAY .....................................................39

Annex G (normative) 1394 trade association CCI descriptor block .......................................40

Bibliography..........................................................................................................................42

Figure 1 – Bit ordering within a byte........................................................................................8

Figure 2 – Byte ordering within a quadlet ................................................................................9

Figure 3 – Quadlet ordering within an octlet............................................................................9

Figure 4 – Isochronous packet header ..................................................................................10

Figure 5 – CIP header...........................................................................................................10

Figure 6 – FDF field ..............................................................................................................11

Figure 7 – General format of a source packet .......................................................................15

Figure 8 – Video data source packet.....................................................................................16

Figure 9 – Compression mode 0 specific information .........................................................17

Figure 10 – Color space 0 video data packetization ...........................................................19

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SIST EN 61883-8:2009
61883-8 © IEC:2008(E) – 3 –

Figure 11 – Color space 1 video data packetization ...........................................................19

Figure 12 – Color space 2 video data packetization ...........................................................20

Figure 13 – Stream information and metadata source packet ................................................21

Figure 14 – Stream information field definitions ....................................................................22

Figure 15 – Auxiliary data field definitions.............................................................................24

Figure E.1 – Typical SIM source packet ................................................................................38

Figure G.1 – CCl descriptor block .........................................................................................40

Table 1 – Video mode...........................................................................................................12

Table 2 – Compression mode ...............................................................................................15

Table 3 – Color space...........................................................................................................15

Table 4 – Source packet type encoding ................................................................................16

Table 5 – References for video data definition ......................................................................17

Table 6 – Frame rate ............................................................................................................22

Table 7 – Aspect ratio...........................................................................................................23

Table 8 – Progressive/interlace mode ...................................................................................23

Table B.1 – Additional video mode parameters, 1 of 2 ..........................................................32

Table B.2 – Additional video mode parameters, 2 of 2 ..........................................................34

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SIST EN 61883-8:2009
– 4 – 61883-8 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONSUMER AUDIO/VIDEO EQUIPMENT –
DIGITAL INTERFACE –
Part 8: Transmission of ITU-R BT.601 style digital video data
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). 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. 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 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 IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61883-8 has been prepared by technical area 4: Digital system

interfaces and protocols, of IEC technical committee 100: Audio, video and multimedia

systems and equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
100/1446/FDIS 100/1476/RVD

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.

A list of all parts of the IEC 61883 series, under the general title Consumer audio/video

equipment – Digital interface, can be found on the IEC website.
---------------------- Page: 10 ----------------------
SIST EN 61883-8:2009
61883-8 © IEC:2008(E) – 5 –

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result 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

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
---------------------- Page: 11 ----------------------
SIST EN 61883-8:2009
– 6 – 61883-8 © IEC:2008(E)
CONSUMER AUDIO/VIDEO EQUIPMENT –
DIGITAL INTERFACE –
Part 8: Transmission of ITU-R BT.601 style digital video data
1 Scope

This part of IEC 61883 specifies a protocol for the transport of uncompressed or compressed

video data in the 4:2:2 format of recommendation ITU-R BT.601 (including compatible

extensions to this format for the higher and lower resolutions of other commonly used video

resolutions) over high performance serial bus, as specified by IEEE Std 1394-1995 as

amended by IEEE Std 1394a-2000 and IEEE Std 1394b-2002 (collectively IEEE 1394). The

data formats for the encapsulation of video data are compatible with those specified by

IEC 61883-1. Associated audio data, if any, should be formatted as specified by IEC 61883-6.

There are many commonly used video formats unsupported by IEC 61883, such as MPEG-4,

Windows Media Format (WMF) and the format used by automotive navigation applications.

Support for all or most of these formats in rendering devices would require implementation of

multiple video codecs. This is an undue burden that may be avoided if the source device

converts to ITU-R BT.601 4:2:2 format and, if necessary, compresses the data with a codec

supported by all destination devices. An additional advantage is that on-screen display (OSD)

information may be mixed with video data prior to transmission to the rendering device.

Because ITU-R BT.601 4:2:2 format is widely used internally in contemporary AV equipment,

this specification permits straight-forward integration of IEEE 1394 into these devices and

enables markets whose usage scenarios include single video sources transmitting to one or

more video displays, such as:

– consumer electronic STB or DVD video rendered by multiple displays in the home;

– automotive navigation and entertainment; and
– aeronautical in-flight entertainment.

For the sake of interoperability and bounded implementation complexity, it is essential that

the specification provide the following:
– a 1394 TA controlled list of compression codecs; and
– at a minimum, a reference to one video compression codec.
2 Normative references

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.
IEC 61883 (all parts), Consumer audio/video equipment – Digital interface

IEC 61883-1, Consumer audio/video equipment – Digital interface – Part 1: General

ISO/IEC 11172-2:1993, Information technology – Coding of moving pictures and associated

audio for digital storage media at up to about 1,5 Mbit/s – Part 2: Video
IEEE Std 1394-1995, Standard for a high performance serial bus
---------------------- Page: 12 ----------------------
SIST EN 61883-8:2009
61883-8 © IEC:2008(E) – 7 –
IEEE Std 1394a-2000, Standard for a high performance serial bus
Amendment 1
IEEE Std 1394b-2002, Standard for a high performance serial bus
Amendment 2

Throughout this document, the term IEEE 1394 refers to IEEE Std 1394-1995 as amended by

IEEE Std 1394a-2000 and IEEE Std 1394b-2002.

1394 Trade Association 2004006, AV/C Digital Interface Command Set General Specification

Version 4.2

1394 Trade Association 2003017, IIDC 1394-based Digital Camera SpecificationVer.1.31

EIA/CEA-861-B 2002, A DTV Profile for Uncompressed High Speed Digital Interfaces
IEEE Std 1394.1-2004, Standard for High Performance Serial Bus Bridges

ITU-R BT.601-5 1995, Studio encoding parameters of digital television for standard 4:3 and

wide-screen 16:9 aspect ratios

ITU-R BT.656-4 1998, Interfaces for digital component video signals in 525-line and 625-line

television systems operating at the 4:2:2 level of recommendation ITU-R BT.601
ITU-R BT.709-4 2000, Parameter values for the HDTV standards for production and
international programme exchange

ITU-R BT.1358 1998, Studio parameters of 625 and 525 line progressive scan television

systems
ITU-T H.263 1998, Video coding for low bit rate communication

SMPTE 267M-1995, Television – Bit-Parallel Digital Interface – Component Video Signal 4:2:2

16x9 Aspect Ratio

SMPTE 274M-1998, Television – 1920 × 1080 Scanning and Analog and Parallel Digital

Interfaces for Multiple Picture Rates

SMPTE 293M-1996, Television – 720 × 483 Active Line at 59.94-Hz Progressive Scan

Production – Digital Representation

SMPTE 296M-2001, Television – 1280 × 720 Progressive Image Sample Structure – Analog

and Digital Representation and Analog Interface

VESA Monitor Timing Specifications, VESA and Industry Standards and Guidelines for

Computer Display Monitor Timing, Version 1.0, Revision 0.8
3 Abbreviations and conventions
3.1 Abbreviations

For the purposes of this document, the abbreviations given in IEC 61883-1, as well as the

following, apply.
AV/C Audio Video Control
---------------------- Page: 13 ----------------------
SIST EN 61883-8:2009
– 8 – 61883-8 © IEC:2008(E)
BCD Binary Coded Decimal
BT.601 ITU-R BT.601-5 1995
CIP Common Isochronous Packet
CSR Control and status register
DAC Digital Analog Converter
DCT Discrete Cosine Transform
DV Digital Video
ND No Data
OSD Onscreen Display
OUI Organizationally Unique Identifier
r Reserved
MPEG Moving Picture Experts Group
SIM Stream Information & Metadata
VDSP Video Data Source Packet
WMF Windows Media Format
3.2 Notation
3.2.1 Numeric values

Decimal and hexadecimal are used within this standard. By editorial convention, decimal

numbers are most frequently used to represent quantities or counts. Addresses are uniformly

represented by hexadecimal numbers. Hexadecimal numbers are also used when the value

represented has an underlying structure that is more apparent in a hexadecimal format than in

a decimal format.

Decimal numbers are represented by Arabic numerals without subscripts or by their English

names. Hexadecimal numbers are represented by digits from the character set 0 – 9 and A - F

followed by the subscript 16. When the subscript is unnecessary to disambiguate the base of

the number it may be omitted. For the sake of legibility hexadecimal numbers are separated

into groups of four digits separated by spaces.
As an example, 42 and 2A both represent the same numeric value.
3.2.2 Bit, byte and quadlet ordering

This specification uses the facilities of Serial Bus, IEEE 1394, and therefore uses the ordering

conventions of Serial Bus in the representation of data structures. In order to promote

interoperability with memory buses that may have different ordering conventions, this

specification defines the order and significance of bits within bytes, bytes within quadlets and

quadlets within octlets in terms of their relative position and not their physically addressed

position.

Within a byte, the most significant bit, msb, is that which is transmitted first and the least

significant bit, lsb, is that which is transmitted last on serial bus, as illustrated below. The

significance of the interior bits uniformly decreases in progression from msb to lsb.

msb interior bits (decreasing significance left to right)
lsb
IEC 2117/08
Figure 1 – Bit ordering within a byte
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SIST EN 61883-8:2009
61883-8 © IEC:2008(E) – 9 –

Within a quadlet, the most significant byte is that which is transmitted first and the least

significant byte is that which is transmitted last on serial bus, as shown below.

least significant
most significant
second next to
least significant byte
most significant byte
most significant byte least significant byte
IEC 2118/08
Figure 2 – Byte ordering within a quadlet

Within an octlet, which is frequently used to contain 64-bit serial bus addresses, the most

significant quadlet is that which is transmitted first and the least significant quadlet is that

which is transmitted last on serial bus, as the figure below indicates.
most significant
most significant quadlet
least significant quadlet
least significant
IEC 2119/08
Figure 3 – Quadlet ordering within an octlet

When block transfers take place that are not quadlet aligned or not an integral number of

quadlets, no assumptions can be made about the ordering (significance within a quadlet) of

bytes at the unaligned beginning or fractional quadlet end of such a block transfer, unless an

application has knowledge (outside of the scope of this specification) of the ordering

conventions of the other bus.
4 Reference model for data transmission
4.1 Model overview

The presently defined compression standards for IEEE 1394 transport, DV and MPEG2, have

difficulties at the system level in a practical consumer AV network. Both offer excessive

compression for simple transport over a wide bandwidth network and carry the associated

complexity of coding and decoding signals. Each are fine for their intended purpose, but have

excessive cost for simple video transport. Conventional video equipment is interfaced with

analog cables carrying a number of signal formats, and it is this low cost and universal

connection capability which digital interfaces need to emulate. Thus the analog output from

any DVD player will connect to any TV, and this is seen as adequate by equipment

manufacturers. Digital interfaces would allow many additional features, but providing every

input with the capability of decoding both DV and MPEG2 in all available standards and

resolutions is unnecessarily expensive. Inside equipment variations on the broadcast

equipment ITU-R BT.601-5/BT.656-4 interface are common and provide a universal interface

standard for digital video transport. The coding system in ITU-R BT.601-5 sends YUV data

across an 8 bit interface between integrated circuits, for example an MPEG decoder and DAC.

If the decoder and DAC are separated by 1394 in their separate boxes there will be a

reduction in cost at the source device and the sink device will be independent from the video

...

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