IEC 62071-1:2005
(Main)Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape - Format D-7 - Part 1: VTR specifications
Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape - Format D-7 - Part 1: VTR specifications
IEC 62071-1:2005 specifies the content, format and recording method of the data blocks containing video, audio, and associated data which form the helical records on 6,35 mm tape contained in cassettes as specified in SMPTE 307M. It specifies the content, format, and recording method for longitudinal cue and control tracks. This bilingual version (2012-11) corresponds to the monolingual English version, published in 2005-10.
Système de magnétoscope numérique à cassette à balayage hélicoïdal à signal compressé utilisant une bande magnétique de 6,35 mm - Format D-7 - Partie 1: Specifications VTR
La CEI 62071-1:2005 spécifie le contenu, le format et la méthode d'enregistrement des blocs de données contenant des données vidéo, audio et des données associées formant les enregistrements hélicoïdaux sur les bandes de 6,35 mm contenues dans des cassettes, comme cela est spécifié dans le SMPTE 307M. Elle spécifie le contenu, le format et la méthode d'enregistrement des pistes longitudinales d'ordres et d'asservissement. La présente version bilingue (2012-11) correspond à la version anglaise monolingue publiée en 2005-10.
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INTERNATIONAL IEC
STANDARD 62071-1
First edition
2005-10
Helical-scan compressed digital video
cassette system using 6,35 mm
magnetic tape – Format D-7 –
Part 1:
VTR specifications
Reference number
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INTERNATIONAL IEC
STANDARD 62071-1
First edition
2005-10
Helical-scan compressed digital video
cassette system using 6,35 mm
magnetic tape – Format D-7 –
Part 1:
VTR specifications
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 XD
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
– 2 – 62071-1 IEC:2005(E)
CONTENTS
FOREWORD.6
1 Scope.8
2 Normative references.8
3 Abbreviations and acronyms .8
4 Environment and test conditions .9
4.1 Environment .9
4.2 Reference tape.10
4.3 Calibration tapes .10
5 Tape.10
5.1 Base.10
5.2 Width .10
5.3 Width fluctuation.10
5.4 Reference edge straightness .10
5.5 Tape thickness .11
5.6 Transmissivity .11
5.7 Offset yield strength.11
5.8 Magnetic coating .11
5.9 Coating coercivity .11
6 Helical recordings .11
6.1 Tape speed .11
6.2 Sectors.11
6.3 Record locations and dimensions.11
6.4 Helical track record tolerance zones .12
6.5 Relative positions of recorded information.12
6.6 Gap azimuth .22
7 Programme track data .26
7.1 General .26
7.2 Insert and track information (ITI) sector .41
7.3 Audio sector .51
7.4 Video sector .56
7.5 Subcode sector.60
7.6 Edit gap.63
8 Audio processing .64
8.1 General .64
8.2 Encoding mode.64
8.3 Audio shuffling.65
8.4 Audio auxiliary data (AAUX).66
8.5 Error correction code addition .69
9 Video processing .71
9.1 General .71
9.2 Compressed macro block and data-sync block.71
9.3 Video auxiliary data (VAUX).72
9.4 Error correction code addition .76
62071-1 IEC:2005(E) – 3 –
10 Subcode processing .77
10.1 General .77
10.2 Subcode data .77
10.3 Error correction code addition .80
11 Longitudinal tracks.81
11.1 Control track.81
11.2 Cue track.82
Annex A (normative) Tape tension.83
Annex B (normative) Track pattern during insert editing.84
Annex C (normative) Cross-tape track measurement technique .86
Annex D (normative) Frequency characteristics of F track .89
Annex E (informative) Relationship between tape length and recording time .90
Annex F (informative) Block diagram of D-7 recorder.91
Bibliography .92
Figure 1 – Locations and dimensions of recorded tracks of 25 Mb/s format.13
Figure 2 – Locations and dimensions of recorded tracks of 50 Mb/s format.14
Figure 3 – Location of cue and control track record.15
Figure 4 – Locations and dimensions of tolerance zones of helical track record of
25 Mb/s format.20
Figure 5 – Locations and dimensions of tolerance zones of helical track record of
50 Mb/s format.21
Figure 6 – A possible scanner configuration and tape wrap of 25 Mb/s format.24
Figure 7 – A possible scanner configuration and tape wrap of 50 Mb/s format.25
Figure 8 – Possible recording system configuration with digital interface port
(informative) .27
Figure 9 – Sector arrangement on helical track.27
Figure 10 – Frames and tracks (525/60 system of 25 Mb/s format) .28
Figure 11 – Frames and tracks (625/50 system of 25 Mb/s format) .28
Figure 12 – A frame and tracks (525/60 system of 50 Mb/s format).29
Figure 13 – A frame and tracks (625/50 system of 50 Mb/s format).29
Figure 14 – Frequency characteristics of tracks .34
Figure 15 – Modulation for audio sector.36
Figure 16 – Modulation for video sector .37
Figure 17 – Modulation for subcode sector .38
Figure 18 – Possible block diagram for signal processing .39
Figure 19 – Bit stream before interleaved NRZI modulation.40
Figure 20 – Pre-coding.40
Figure 21 – Structure of ITI sector .42
Figure 22 – Structure of sync block of TIA .48
Figure 23 – Structure of audio sector.51
Figure 24 – Structure of sync blocks in audio sector .52
Figure 25 – Structure of video sector .57
– 4 – 62071-1 IEC:2005(E)
Figure 26 – Structure of sync blocks in video sector .58
Figure 27 – Structure of subcode sector .61
Figure 28 – Structure of sync blocks in subcode sector.62
Figure 29 – Sample to audio data bytes conversion .65
Figure 30 – Arrangement of AAUX packs in audio auxiliary data .66
Figure 31 – Data and inner parity of a data sync block .70
Figure 32 – Data and outer parity of a data sync block for audio sector .71
Figure 33 – Relation between the compressed macro block number and the data-sync block 72
Figure 34 – Arrangement.73
Figure 35 – Data and outer parity of a data sync block for video sector .77
Figure 36 – Arrangement of subcode data .78
Figure 37 – Bit assignment for subcode data and parity .
...
IEC 62071-1 ®
Edition 1.0 2005-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Helical-scan compressed digital video cassette system using 6,35 mm magnetic
tape – Format D-7 –
Part 1: VTR specifications
Système de magnétoscope numérique à cassette à balayage hélicoïdal à signal
compressé utilisant une bande magnétique de 6,35 mm – Format D-7 –
Partie 1: Spécifications VTR
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IEC 62071-1 ®
Edition 1.0 2005-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Helical-scan compressed digital video cassette system using 6,35 mm magnetic
tape – Format D-7 –
Part 1: VTR specifications
Système de magnétoscope numérique à cassette à balayage hélicoïdal à signal
compressé utilisant une bande magnétique de 6,35 mm – Format D-7 –
Partie 1: Spécifications VTR
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XD
ICS 33.160.40 ISBN 978-2-83220-317-0
– 2 – 62071-1 IEC:2005
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references. 8
3 Abbreviations and acronyms . 8
4 Environment and test conditions . 9
4.1 Environment . 9
4.2 Reference tape . 10
4.3 Calibration tapes . 10
5 Tape . 10
5.1 Base . 10
5.2 Width . 10
5.3 Width fluctuation . 10
5.4 Reference edge straightness . 10
5.5 Tape thickness . 11
5.6 Transmissivity . 11
5.7 Offset yield strength . 11
5.8 Magnetic coating . 11
5.9 Coating coercivity . 11
6 Helical recordings . 11
6.1 Tape speed . 11
6.2 Sectors . 11
6.3 Record locations and dimensions . 11
6.4 Helical track record tolerance zones . 12
6.5 Relative positions of recorded information . 12
6.6 Gap azimuth . 22
7 Programme track data . 26
7.1 General . 26
7.2 Insert and track information (ITI) sector . 41
7.3 Audio sector . 51
7.4 Video sector . 56
7.5 Subcode sector. 60
7.6 Edit gap . 63
8 Audio processing . 64
8.1 General . 64
8.2 Encoding mode . 64
8.3 Audio shuffling . 65
8.4 Audio auxiliary data (AAUX) . 66
8.5 Error correction code addition . 69
9 Video processing . 71
9.1 General . 71
9.2 Compressed macro block and data-sync block . 71
9.3 Video auxiliary data (VAUX) . 72
9.4 Error correction code addition . 76
62071-1 IEC:2005 – 3 –
10 Subcode processing . 77
10.1 General . 77
10.2 Subcode data . 77
10.3 Error correction code addition . 80
11 Longitudinal tracks . 81
11.1 Control track . 81
11.2 Cue track . 82
Annex A (normative) Tape tension . 83
Annex B (normative) Track pattern during insert editing . 84
Annex C (normative) Cross-tape track measurement technique . 86
Annex D (normative) Frequency characteristics of F track . 89
Annex E (informative) Relationship between tape length and recording time . 90
Annex F (informative) Block diagram of D-7 recorder . 91
Bibliography . 92
Figure 1 – Locations and dimensions of recorded tracks of 25 Mb/s format . 13
Figure 2 – Locations and dimensions of recorded tracks of 50 Mb/s format . 14
Figure 3 – Location of cue and control track record. 15
Figure 4 – Locations and dimensions of tolerance zones of helical track record of
25 Mb/s format . 20
Figure 5 – Locations and dimensions of tolerance zones of helical track record of
50 Mb/s format . 21
Figure 6 – A possible scanner configuration and tape wrap of 25 Mb/s format . 24
Figure 7 – A possible scanner configuration and tape wrap of 50 Mb/s format . 25
Figure 8 – Possible recording system configuration with digital interface port
(informative) . 27
Figure 9 – Sector arrangement on helical track . 27
Figure 10 – Frames and tracks (525/60 system of 25 Mb/s format) . 28
Figure 11 – Frames and tracks (625/50 system of 25 Mb/s format) . 28
Figure 12 – A frame and tracks (525/60 system of 50 Mb/s format) . 29
Figure 13 – A frame and tracks (625/50 system of 50 Mb/s format) . 29
Figure 14 – Frequency characteristics of track
...
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