IEC 61834-3:1999

Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) - Part 3: HD format for 1125-60 and 1250-50 systems

Establishes basic principles applicable to the next generation of digital video cassette recording systems for consumer use for the interest of both users and manufacturers. Specifies the content, format and recording method of the data blocks forming the helical records on the tape containing audio, video, and system data. Describes the specifications for the 1125-line system with a frame frequency of 30,00 Hz and the 1250-line system with a frame frequency of 25,00 Hz.

Enregistrement - Systèmes de magnétoscopes numériques à cassette à balayage hélicoïdal sur bande magnétique de 6,35 mm pour usage grand public (systèmes 525-60, 625-50, 1125-60 et 1250-50) - Partie 3: Format HD pour systèmes 1125-60 et 1250-50

Établit les principes fondamentaux s'appliquant à la future génération des magnétoscopes numériques à cassette à usage grand public, dans l'intérêt à la fois des consommateurs et des fabriquants. Spécifie le contenu, le format et la méthode d'enregistrement des blocs de données constituant les enregistrements hélicoïdaux sur les bandes contenant les données audio, vidéo et celles du système. Donne les spécifications des systèmes à 1125 lignes à la fréquence d'image de 30,00 Hz et celles des systèmes à 1250 lignes à la fréquence de l'image de 25,00 Hz.

General Information

• Status: Published
• Publication Date: 03-Nov-1999
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.40 - Video systems
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Drafting Committee: WG 3 - TC 100/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 15-Dec-1999
• Completion Date: 04-Nov-1999

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
61834-3
First edition
1999-11
Recording – Helical-scan digital video cassette
recording system using 6,35 mm magnetic tape for
consumer use
(525-60, 625-50, 1125-60 and 1250-50 systems)
Part 3:
HD format for 1125-60 and 1250-50 systems
Système de magnétoscope numérique à cassette à balayage
hélicoïdal sur bande magnétique de 6,35 mm pour usage
grand public
(systèmes 525-60, 625-50, 1125-60 et 1250-50) –
Partie 3:
Format HD pour les systèmes 1125-60 et 1250-50
Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are
available. 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.
Validity of this publication
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 the date of the reconfirmation of the publication is available
in the IEC catalogue.
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 to be found at the following IEC sources:
• IEC web site*
• Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International
Electrotechnical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

INTERNATIONAL IEC
STANDARD
61834-3
First edition
1999-11
Recording – Helical-scan digital video cassette
recording system using 6,35 mm magnetic tape for
consumer use
(525-60, 625-50, 1125-60 and 1250-50 systems)
Part 3:
HD format for 1125-60 and 1250-50 systems
Système de magnétoscope numérique à cassette à balayage
hélicoïdal sur bande magnétique de 6,35 mm pour usage
grand public
(systèmes 525-60, 625-50, 1125-60 et 1250-50) –
Partie 3:
Format HD pour les systèmes 1125-60 et 1250-50
 IEC 1999  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 Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
XB
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61834-3 © IEC:1999(E)
CONTENTS
Page
FOREWORD . 5
Clause
1 General. 7
1.1 Scope . 7
1.2 Normative references. 7
1.3 Definitions, symbols and abbreviations . 7
1.4 Environment and test conditions. 8
1.5 Reference tape . 8
1.6 Calibration tape. 8
2 Helical recordings . 8
2.1 Tape speed. 8
2.2 Record location and dimensions . 8
3 Programme track data arrangement . 9
3.1 Introduction. 9
3.2 Labelling convention. 9
3.3 Audio sector. 9
3.4 Video sector. 9
3.5 Subcode sector . 9
4 Audio interface. 9
5 Video interface. 9
6 Audio signal processing. 10
6.1 Introduction. 10
6.2 Error correction code. 10
6.3 Randomization pattern . 10
6.4 Audio encoding . 10
6.5 Audio channel allocation. 10
6.6 Frame structure . 11
6.7 Shuffling method . 12
6.8 Audio auxiliary data (AAUX) . 14
6.9 Invalid recording . 14
7 Video signal processing. 14
7.1 Introduction. 14
7.2 Error correction code. 14
7.3 Randomization pattern . 14
7.4 Video structure. 14
7.5 DCT processing . 18
7.6 Quantization. 18
7.7 Variable length coding (VLC). 19
7.8 Arrangement of a compressed macro block . 19
7.9 Arrangement of a video segment . 20
7.10 Data-sync block and compressed macro block . 22
7.11 Video auxiliary data (VAUX) . 22
7.12 Invalid recording . 22

61834-3 © IEC:1999(E) – 3 –
8 Subcode signal processing. 22
8.1 The recording periods of TAG ID . 22
8.2 The writing method of the optional area . 23
8.3 The rewriting periods of TAG ID . 23
9 System data . 23
9.1 AAUX. 23
9.2 VAUX. 24
9.3 Subcode . 25
9.4 MIC. 25
10 Data structure for digital interface. 25
10.1 Introduction. 25
10.2 Data structure . 25
10.3 DIF sequence. 26
10.4 DIF block . 26
10.5 Frame period . 28
10.6 Playback speed. 28
Annex A (normative) 20 bits audio for professional use . 57
A.1 Channel allocation. 57
A.2 Encoding mode . 57
A.3 Audio error code . 57
A.4 Shuffling method . 57
Annex B (informative) Manufacturers . 61
B.1 Reference tape . 61
B.2 Calibration tape. 61
B.3 Purchase . 61
Figure 1 – Sector arrangement on helical track (1125-60 and 1250-50 systems). 30
Figure 2 – 1125-60 system . 30
Figure 3 – 1250-50 system . 31
Figure 4 – Transmitting samples for 1125-60 system. 37
Figure 5 – Transmitting samples for 1250-50 system. 38
Figure 6 – DCT block and the pixel coordinates . 38
Figure 7 – DCT block arrangement . 39
Figure 8 – Macro block and DCT block order . 39
Figure 9 – Arrangement of macro blocks for 1125-60 system . 40
Figure 10 – Super blocks and macro blocks in a frame on TV screen for 1125-60 system. 41
Figure 11 – Super blocks and macro blocks in a frame on TV screen for 1250-50 system. 42
Figure 12 – Macro block order in a super block . 43
Figure 13 – Area number . 43
Figure 14 – The arrangement of a compressed macro block . 44
Figure 15 – The arrangement of a video segment after bit-rate reduction . 45
Figure 16 – The relation between the compressed macro block number and
the data-sync block. 46
Figure 17 – Main area and optional area (1125-60 system) . 47
Figure 18 – Main area and optional area (1250-50 system) . 48

– 4 – 61834-3 © IEC:1999(E)
Page
Figure 19 – Data structure for transmission. 50
Figure 20 – Transmission order of DIF blocks in a DIF sequence . 51
Figure 21 – ID data in a DIF block. 52
Figure 22 – Data in the header section. 52
Figure A.1 –Sample to data bytes conversion for 20 bits . 60
Table 1 – Record location and dimensions (1125-60 system, 1250-50 system) . 28
Table 2 – Sector location from SSA (1125-60 system, 1250-50 system) . 29
Table 3 – Scanner example (1125-60 system, 1250-50 system) . 29
Table 4 – Sequence number (1125-60 and 1250-50 systems) .
...

IEC 61834-3
Edition 1.0 1999-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Recording – Helical-scan digital video cassette recording system using 6,35 mm
magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) –
Part 3: HD format for 1125-60 and 1250-50 systems

Enregistrement – Systèmes de magnétoscopes numériques à cassette à
balayage hélicoïdal sur bande magnétique de 6,35 mm pour usage grand public
(systèmes 525-60, 625-50, 1125-60 et 1250-50) –
Partie 3: Format HD pour systèmes 1125-60 et 1250-50

Copyright © 1999 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
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IEC 61834-3
Edition 1.0 1999-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Recording – Helical-scan digital video cassette recording system using 6,35 mm
magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) –
Part 3: HD format for 1125-60 and 1250-50 systems

Enregistrement – Systèmes de magnétoscopes numériques à cassette à
balayage hélicoïdal sur bande magnétique de 6,35 mm pour usage grand public
(systèmes 525-60, 625-50, 1125-60 et 1250-50) –
Partie 3: Format HD pour systèmes 1125-60 et 1250-50

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 33.160.40 ISBN 2-8318-5130-0
– 2 – 61834-3 © CEI:1999
SOMMAIRE
Pages
AVANT-PROPOS . 10
Articles
1 Généralités .14
1.1 Domaine d’application . 14
1.2 Références normatives . 14
1.3 Définitions, symboles et abréviations. 16
1.4 Environnement et conditions d’essai. 16
1.5 Bande de référence. 16
1.6 Bande étalon. 16
1.6.1 Emplacements et dimensions des enregistrements . 16
1.6.2 Signaux d’étalonnage . 16
1.6.3 Acquisition . 16
2 Enregistrements hélicoïdaux . 16
2.1 Vitesse de la bande. 16
2.2 Emplacement et dimensions des enregistrements . 16
2.2.1 Exemple d’analyseur . 18
3 Répartition des données de la piste de programme. 18
3.1 Introduction. 18
3.2 Convention relative à l’étiquetage. 18
3.3 Secteur audio. 18
3.4 Secteur vidéo. 18
3.5 Secteur de sous-code . 18
4 Interface audio . 20
5 Interface vidéo . 20
6 Traitement des signaux audio. 20
6.1 Introduction. 20
6.2 Code de correction d’erreur. 20
6.3 Configuration du tirage aléatoire. 20
6.4 Codage audio. 20
6.5 Attribution des voies audio . 20
6.5.1 Bloc audio . 20
6.5.2 Mode des voies audio. 20
6.5.3 Règle d’attribution des voies. 22
6.6 Structure de trame . 24
6.6.1 Synchronisation relative des signaux audio vidéo. 24
6.6.2 Traitement d’une trame audio . 24
6.7 Méthode de brassage. 24
6.7.1 Modes 48k, 44,1k, 32k . 26
6.7.2 Mode 32k-2ch . 28
6.8 Données auxiliaires audio (AAUX) . 28
6.9 Enregistrement non valable . 28
7 Traitement des signaux vidéo . 28
7.1 Introduction. 28
7.2 Code de correction d’erreur. 28
7.3 Configuration du tirage aléatoire. 30

61834-3 © IEC:1999 – 3 –
CONTENTS
Page
FOREWORD .11
Clause
1 General. 15
1.1 Scope . 15
1.2 Normative references. 15
1.3 Definitions, symbols and abbreviations . 17
1.4 Environment and test conditions. 17
1.5 Reference tape . 17
1.6 Calibration tape. 17
1.6.1 Record locations and dimensions . 17
1.6.2 Calibration signals. 17
1.6.3 Purchase. 17
2 Helical recordings . 17
2.1 Tape speed. 17
2.2 Record location and dimensions . 17
2.2.1 Scanner example . 19
3 Programme track data arrangement . 19
3.1 Introduction. 19
3.2 Labelling convention. 19
3.3 Audio sector. 19
3.4 Video sector. 19
3.5 Subcode sector . 19
4 Audio interface. 21
5 Video interface. 21
6 Audio signal processing. 21
6.1 Introduction. 21
6.2 Error correction code. 21
6.3 Randomization pattern . 21
6.4 Audio encoding . 21
6.5 Audio channel allocation. 21
6.5.1 Audio block .
...