IEC 62071-3:2005

INTERNATIONAL IEC
STANDARD 62071-3
First edition
2005-10
Helical-scan compressed digital video
cassette system using 6,35 mm
magnetic tape – Format D-7 –
Part 3:
Data stream format
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD 62071-3
First edition
2005-10
Helical-scan compressed digital video
cassette system using 6,35 mm
magnetic tape – Format D-7 –
Part 3:
Data stream format
 IEC 2005  Copyright - all rights reserved
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 writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale T
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62071-3  IEC:2005(E)
CONTENTS
1 Scope.5
2 Normative references.5
3 Abbreviations and acronyms .5
4 Identification within the serial data transport interface (SDTI) .6
4.1 SDTI header packet data .6
4.2 Payload .6
5 Stream block format .6
5.1 Reserved data words .7
5.2 Signal type words .7
5.3 Transmission type word .9
5.4 DIF block ID words .10
5.5 DIF block data words .10
5.6 Error correction code (ECC) words.10
6 Transmission order .11
7 Mapping structure .14
7.1 Channel unit .14
7.2 Mapping rules.14

Annex A (informative) Block diagram of D-7 recorder.23

Figure 1 – Stream block format .7
Figure 2 – Signal type (ST) word mapping .7
Figure 3 – Transmission type (TT) word mapping .9
Figure 4 – Mapping of DIF block ID .10
Figure 5 – Mapping of ECC .11
Figure 6 – Transmission order in one frame for the 50 Mb/s structure .12
Figure 7 – Transmission order in one frame for the 25 Mb/s structure .12
Figure 8 – Transmission order in a DIF sequence.13
Figure 9 – Channel unit mapping for the 25 Mb/s structure (525/60 SDTI system) .16
Figure 10 – Channel unit mapping for the 25 Mb/s structure (625/50 SDTI system) .17
Figure 11 – Channel unit mapping in a synchronized multichannel units transmission
(525/60 SDTI system) .19
Figure 12 – Channel unit mapping in a synchronized multichannel units transmission
(625/50 SDTI system) .20
Figure 13 – Channel unit mapping for the 50 Mb/s structure (525/60 SDTI system) .21
Figure 14 – Channel unit mapping for the 50 Mb/s structure (625/50 SDTI system) .22
Figure A.1 – Block diagram of D-7 recorder .23

Table 1 – Start lines of channel units.18

62071-3  IEC:2005(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM
USING 6,35 mm MAGNETIC TAPE – FORMAT D-7 –

Part 3: Data stream format
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 62041-3 has been prepared by technical area 6: Higher data rate
storage media, data structures and equipment 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
100/902/CDV 100/986/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.

– 4 – 62071-3  IEC:2005(E)
IEC 62071 consists of the following parts, under the general title Helical-scan compressed
digital video cassette system using 6,35 mm magnetic tape – Format D-7:
Part 1: VTR specifications
Part 2: Compression format
Part 3: Data stream format
This part 3 describes the specifications for transmission of DV-based compressed video and
audio data stream over 270Mb/s and 360 Mb/s serial digital interface.
Part 1 describes the VTR specifications which are tape, magnetization, helical recording,
modulation method and basic system data for video compressed data.
Part 2 describes the specifications for encoding process and data format for 525i and 625i
systems.
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 bililngual version of this publication may be issued at a later date.

62071-3  IEC:2005(E) – 5 –
HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM
USING 6,35 mm MAGNETIC TAPE – FORMAT D-7

Part 3: Data stream format
1 Scope
This part of IEC 62071 defines the format of the data stream for the synchronous exchange of
DV-based audio, data, and compressed video (whose data structure is defined in SMPTE 314M)
over the interface defined in SMPTE 305M. It covers the transmission of audio, subcode data
and compressed video packets associated with DV-based 25 and 50 Mb/s data structures
including faster-than-real-time transmission for 525/60 SDTI and 625/50 SDTI systems.
This standard does not include the data stream of a DV-compressed structure as defined in
SMPTE 322M.
Space within SMPTE 305M not used by a data stream conforming to this standard may be used
for the transmission of data other than those representing DV-based audio, data and
compressed video.
In this standard, the 60 Hz system refers to the field frequency 59,94 Hz system and the 50 Hz
system refers to the field frequency 50,0 Hz system.
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.
SMPTE 305M: 2005, Television – Serial Data Transport Interface
SMPTE 314M: 1999, Television – Data Structure for DV-Based Audio, Data and Compressed
Video – 25 and 50 Mb/s
SMPTE 322M: 2004, Television – Format for Transmission of DV Compressed Video, Audio
and Data Over a Serial Data Transport Interface
3 Abbreviations and acronyms
DIF: Digital interface
DVF: DIF valid flag
ECC: Error correction code
FF: Field/frame frequency flag
FSNF: Frame sequence number flag
SDI: Serial digital interface
SDTI: Serial data transport interface
ST: Signal type
STVF: Signal type of video frame
TRF: Transmission rate flag
TT: Transmission type
– 6 – 62071-3  IEC:2005(E)
4 Identification within the serial data transport interface (SDTI)
4.1 SDTI header packet data
The header packet data words of the serial data transport interface (SDTI) associated with this
data stream format shall conform to SMPTE 305M. When the SDTI interfac
...