SIST EN 62071:2005
(Main)Helical-scan compressed digital video cassette recording system using 6,35 mm magnetic tape - Format D-7
Helical-scan compressed digital video cassette recording system using 6,35 mm magnetic tape - Format D-7
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 in cassettes as given in SMPTE 306M.
Videokassettensystem mit komprimierter digitaler Schrägspuraufzeichnung auf Magnetband 6,35 mm - Format D-7
Système de magnétoscope numérique à cassette à balayage hélicoïdal à signal compressé utilisant la bande magnétique de 6,35 mm - Format D-7
Spécifie le contenu, le format et la méthode d'enregistrement des blocs de données contenant de la vidéo, de l'audio et des données associées formant des enregistrements hélicoïdaux sur les bandes de 6,35 mm dans les cassettes, comme cela est spécifié dans le SMPTE 306M.
Digitalni videokasetni snemalni sistem z zapisovanjem s poševnimi sledmi na magnetnem traku, širokem 6,35 mm, in komprimiranjem – Format D-7 (IEC 62071:2000)
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Standards Content (Sample)
SLOVENSKI SIST EN 62071:2005
STANDARD
januar 2005
Digitalni videokasetni snemalni sistem z zapisovanjem s poševnimi sledmi na
magnetnem traku, širokem 6,35 mm, in komprimiranjem – Format D-7 (IEC
62071:2000)
(istoveten EN 62071:2001)
Helical-scan compressed digital video cassette recording system using 6, 35 mm
magnetic tape - Format D-7 (IEC 62071:2000)
ICS 33.160.40 Referenčna številka
SIST EN 62071:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD EN 62071
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2001
ICS 33.160.40
English version
Helical-scan compressed digital video cassette recording system
using 6,35 mm magnetic tape -
Format D-7
(IEC 62071:2000)
Système de magnétoscope numérique Videokassettensystem mit komprimierter
à cassette à balayage hélicoïdal digitaler Schrägspuraufzeichnung
à signal compressé utilisant la bande auf Magnetband 6,35 mm -
magnétique de 6,35 mm - Format D-7
Format D-7 (IEC 62071:2000)
(CEI 62071:2000)
This European Standard was approved by CENELEC on 2000-11-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62071:2001 E
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EN 62071:2001 - 2 -
Foreword
The text of document 100B/271/FDIS, future edition 1 of IEC 62071, prepared by SC 100B, Audio,
video and multimedia information storage systems, 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 62071 on 2000-11-01.
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) 2001-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annexes A to E and ZA are normative and annex F is informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62071:2000 was approved by CENELEC as a European
Standard without any modification.
__________
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- 3 - EN 62071:2001
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
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 61834-1 1998 Recording - Helical-scan digital video EN 61834-1 1998
cassette recording system using 6,35 mm
magnetic tape for consumer use (525-60,
625-50, 1125-60 and 1250-50 systems)
Part 1: General specifications
IEC 61834-2 1998 Part 2: SD format for 525-60 and 625-50 EN 61834-2 1998
systems
SMPTE 12M Television, audio and film - Time and--
control code
ITU-R BT.470-6 1998 Conventional television systems - -
ITU-R BT.601-5 1995 Studio encoding parameters of digital--
television for standard 4:3 and wide-
screen 16:9 aspect radios
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NORME CEI
INTERNATIONALE
IEC
62071
INTERNATIONAL
Première édition
STANDARD
First edition
2000-11
Système de magnétoscope numérique à cassette
à balayage hélicoïdal à signal compressé utilisant
la bande magnétique de 6,35 mm – Format D-7
Helical-scan compressed digital video cassette
recording system using 6,35 mm magnetic tape –
Format D-7
© IEC 2000 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE XG
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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62071 © IEC:2000 – 3 –
CONTENTS
Page
FOREWORD .15
Clause
1 General. 17
1.1 Scope . 17
1.2 Normative references. 17
1.3 Symbols and abbreviations. 19
1.4 Environment and test conditions. 21
1.5 Reference tapes. 21
1.6 Calibration tapes . 21
2 Video cassette . 23
2.1 Mechanical parameters . 23
2.2 Video tape specification . 77
3 Helical recordings . 79
3.1 Tape speed. 79
3.2 Sectors . 79
3.3 Record location and dimensions . 79
3.4 Helical track record tolerance zones . 79
3.5 Relative positions of recorded information . 79
3.6 Gap azimuth . 91
3.7 Transport and scanner . 91
4 Programme track data. 95
4.1 General. 95
4.2 ITI sector . 119
4.3 Audio sector. 139
4.4 Video sector. 149
4.5 Subcode sector . 157
4.6 Edit gap . 163
5 Audio processing. 165
5.1 Introduction. 165
5.2 Encoding mode . 165
5.3 Audio shuffling . 167
5.4 Audio auxiliary data (AAUX) . 169
5.5 Error correction code addition . 175
6 Video processing. 179
6.1 Introduction. 179
6.2 Video structure. 179
6.3 DCT processing . 203
6.4 Quantization. 207
6.5 Variable length coding (VLC). 213
6.6 Arrangement of a compressed macro block . 213
6.7 Arrangement of a video segment . 221
6.8 Intraframe deshuffling . 225
6.9 Video auxiliary data (VAUX) . 231
6.10 Error correction code addition . 237
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62071 © IEC:2000 – 5 –
Clause Page
7 Subcode processing. 239
7.1 Introduction. 239
7.2 Subcode data. 239
7.3 Error correction code addition . 245
8 Longitudinal tracks . 247
8.1 Control track . 247
8.2 Cue track . 249
9 Interface . 251
9.1 Introduction. 251
9.2 Data structure . 251
Annex A (normative) Tape tension . 279
Annex B (normative) Cross-tape track measurement technique. 281
Annex C (normative) Track pattern during insert editing . 287
Annex D (normative) Frequency characteristics of the F track . 289
0
Annex E (normative) Digital filter. 291
Annex F (informative) Small cassette adapter . 293
Figure 1 – Top and side views of the M cassette . 27
Figure 2 – Top and side views of the L cassette . 29
Figure 3 – Internal structure and tape path for the M cassette . 31
Figure 4 – Internal structure and tape path for the L cassette . 33
Figure 5 – Datum area and support area for the M cassette . 35
Figure 6 – Datum area and support area for the L cassette . 37
Figure 7 – Bottom view of the M cassette. 39
Figure 8 – Bottom view of the L cassette. 41
Figure 9 – Contact area of the ID board for the M cassette. 47
Figure 10 – Contact area of the ID board for the L cassette. 49
Figure 11 – Light path and leader/trailer tape for the M cassette. 51
Figure 12 – Light path and leader/trailer tape for the L cassette. 53
Figure 13 – Reels for the M cassette. 57
Figure 14 – Reels for the L cassette. 59
Figure 15 – Reel lock and release for the M cassette . 61
Figure 16 – Reel lock and release for the L cassette . 63
Figure 17 – Lid lock and release for the M cassette. 65
Figure 18 – Lid lock and release for the L cassette. 67
Figure 19a – Movement of inner lid . 69
Figure 19 – Space of the M cassette for the VTR loading mechanism. 69
Figure 20a – Movement of inner lid . 71
Figure 20 – Space of the L cassette for the VTR loading mechanism. 71
Figure 21 – Lid for the M cassette. 73
Figure 22 – Lid for the L cassette. 75
Figure 23 – Location and dimensions of recorded tracks . 81
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62071 © IEC:2000 – 7 –
Page
Figure 24 – Location of the cue and control track recording. 83
Figure 25 – Location and dimensions of the tolerance zone of the helical track recording . 89
Figure 26 – Possible scanner configuration and tape wrap . 93
Figure 27 – Possible recording system configuration with digital interface port. 97
Figure 28 – Sector arrangement on helical track . 99
Figure 29 – Frame and tracks (525/60 system) . 99
Figure 30 – Frame and tracks (625/50 system) . 99
Figure 31 – Frequency characteristics of tracks . 105
Figure 32 – Modulation for the audio sector. 109
Figure 33 – Modulation for the video sector. 111
Figure 34 – Modulation for the subcode sector . 113
Figure 35 – Possible block diagram for signal processing. 115
Figure 36 – Bit stream before interleaved NRZI modulation . 117
Figure 37 – Precoding . 117
Figure 38 – Structure of the ITI sector. 121
Figure 39 – Structure of sync block of the TIA. 135
Figure 40 – Structure of the audio sector . 141
Figure 41 – Structure of sync blocks in the audio sector . 141
Figure 42 – Structure of the video sector. 149
Figure 43 – Structure of sync blocks in the video sector . 153
Figure 44 – Structure of the subcode sector. 159
Figure 45 – Structure of sync blocks in the subcode sector . 161
Figure 46 – Sample for audio data bytes conversion. 167
Figure 47 – Arrangement of AAUX packs in audio auxiliary data. 169
Figure 48 – Data and inner parity of a data sync block . 177
Figure 49 – Data and outer parity of a data sync block for the audio sector. 177
Figure 50 – Transmitting samples for the 525/60 system . 183
Figure 51 – Transmitting samples for the 625/50 system . 185
Figure 52 – DCT block and pixel coordinate . 189
Figure 53 – Rightmost DCT block in the colour-difference signal . 189
Figure 54 – DCT block arrangement . 191
Figure 55 – Macro block and DCT blocks . 191
Figure 56 – Super blocks and macro blocks in one television frame for the 525/60 system . 193
Figure 57 – Super blocks and macro blocks in one television frame for the 625/50 system . 195
Figure 58 – Macro block order in a super block for the 525/60 system . 199
Figure 59 – Macro block order in a super block for the 625/50 system . 199
Figure 60 – Output order of a weighted DCT block . 209
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62071 © IEC:2000 – 9 –
Page
Figure 61 – Area numbers . 211
Figure 62 – Arrangement of a compressed macro block . 215
Figure 63 – Arrangement of a video segment after the bit rate reduction . 227
Figure 64 – Video error code . 227
Figure 65 – Relation between the compressed macro block number and
the data sync block. 229
Figure 66 – Arrangement of VAUX packs in VAUX sync blocks . 231
Figure 67 – Data and outer parity of a data sync block for the video sector. 239
Figure 68 – Arrangement of subcode data. 241
Figure 69 – Bit assignment for subcode data and parity. 245
Figure 70 – Recorded control record of waveform timing (525/60 system) . 249
Figure 71 – Recorded control record of waveform timing (625/50 system) . 249
Figure 72 – Data structure for transmission. 253
Figure 73 – Transmission order of a DIF block in a DIF sequence . 255
Figure 74 – Data in the subcode section . 263
Figure 75 – Data in the VAUX section . 265
Figure 76 – Data in the audio section . 271
Figure 77 – Data in the video section . 277
Figure B.1 – Cross-tape measurement technique . 285
Figure B.2 – Correction factors (actual tape speed, tension). 285
Figure B.3 – Track location error plot (example). 285
Figure C.1 – Typical track pattern during insert editing . 287
Figure D.1 – Frequency characteristics of the F track . 289
0
Figure E.1 – Template for insertion loss frequency characteristic . 291
Figure E.2 – Passband ripple tolerance. 291
Figure F.1 – Top and side view of the adapter. 293
Figure F.2 – Bottom view of the adapter. 295
Figure F.3 – Datum and support areas of the adapter. 297
Figure F.4 – Lid lock and release mechanism of the adapter . 299
Figure F.5 – Lid opening mechanism . 301
Figure F.6 – Light path of the adapter . 301
Table 1 – Mechanical tolerances. 23
Table 2 – Tape length and recording times of M and L cassettes. 25
Table 3 – Identification board for the M cassette . 43
Table 4 – Identification board for the L cassette . 43
Table 5 – Length of leader/trailer tape. 45
Table 6 – Reel spring force. 55
Table 7 – Recording location and dimensions (525/60 system). 85
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62071 © IEC:2000 – 11 –
Page
Table 8 – Recording location and dimensions (625/50 system). 87
Table 9 – Parameters for a possible scanner design . 91
Table 10 – Frame and servo information (525/60 system) . 101
Table 11 – Frame and servo information (625/50 system) . 103
Table 12 – Bit stream of ITI preamble for track F . 123
0
Table 13 – Bit stream of ITI preamble for track F . 125
1
Table 14 – Bit stream of ITI preamble for track F . 127
2
Table 15 – Bit stream of the SSA for track F . 129
0
Table 16 – Bit stream of the SSA for track F . 131
1
Table 17 – Bit stream of the SSA for track F . 133
2
Table 18 – Application ID of track information . 135
Table 19 – Pilot frame . 135
Table 20 – Bit stream of the TIA for track F . 135
0
Table 21 – Bit stream of the TIA for track F . 135
1
Table 22 – Bit stream of the TIA for track F . 137
2
Table 23 – Bit stream of ITI postamble for track F . 137
0
Table 24 – Bit stream of ITI postamble for track F . 137
1
Table 25 – Bit stream of ITI postamble for track F . 139
2
Table 26 – ID0 in the audio sector . 143
Table 27 – Audio application ID . 143
Table 28 – Track pair number . 145
Table 29 – Bit assignment of ID codewords. 147
Table 30 – ID data in the video sector . 155
Table 31 – Video application ID . 157
Table 32 – ID data in the subcode sector . 161
Table 33 – Subcode application ID. 161
Table 34 – AAUX data . 171
Table 35 – Mapping of an AAUX source pack. 171
Table 36 – Mapping of an AAUX source control pack . 173
Table 37 – Construction of video signal sampling (4:2:2). 181
Table 38 – Class number and DCT block . 209
Table 39 – Example of classification for reference . 209
Table 40 – Quantization step . 211
Table 41 – Length of codewords . 215
Table 42 – Codewords of variable length coding . 217
Table 43 – Definition of the STA . 219
Table 44 – Codewords of the QNO.
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