1、 INTERNATIONAL STANDARD IEC62447-1 First edition2007-06 Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-12 Part 1:VTR specifications Reference number IEC 62447-1:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLI
2、ED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,wi
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8、Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONAL STANDARD IEC62447-1 First edition2007-06 Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format
9、D-12 Part 1:VTR specifications XC For price,see current cataloguePRICE CODE Commission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62447-1 IEC:2007(E)CONTEN
10、TS FOREWORD.7 1 Scope.9 2 Normative references.9 3 Abbreviations and acronyms.10 4 Environment and test conditions.10 4.1 Environment.10 4.2 Reference tape.11 4.3 Calibration tapes.11 4.3.1 Tape.11 4.3.2 Record locations and dimensions.11 4.3.3 Calibration signals.11 5 Tape.11 5.1 Base.11 5.2 Width.
11、11 5.3 Width fluctuation.11 5.4 Reference edge straightness.11 5.5 Tape thickness.12 5.6 Transmissivity.12 5.7 Offset yield strength.12 5.8 Magnetic coating.12 5.9 Coating coercivity.12 6 Helical recordings.12 6.1 Tape speed.12 6.2 Sectors.12 6.3 Record location and dimensions.12 6.4 Helical track r
12、ecord tolerance zones.13 6.5 Relative positions of recorded information.13 6.5.1 Relative positions of longitudinal tracks.13 6.5.2 Programme area reference point.13 6.6 Gap azimuth.18 6.6.1 Cue and control track.18 6.6.2 Helical track.18 6.7 Transport and scanner.18 7 Programme track data.22 7.1 Ge
13、neral.22 7.1.1 Introduction.22 7.1.2 Labeling convention.22 7.1.3 Signal processing.23 7.1.4 Magnetization.32 7.2 Insert and track information(ITI)sector.32 7.2.1 Structure.32 7.2.2 ITI preamble.32 7.2.3 Start sync area(SSA).32 7.2.4 Track information area(TIA).39 7.2.5 ITI postamble.40 LICENSED TO
14、MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62447-1 IEC:2007(E)3 7.3 Audio sector.41 7.3.1 Structure.41 7.3.2 Audio pre and post-amble.41 7.3.3 Audio sync block.41 7.4 Video sector.45 7.4.1 Structure.45 7.4.2 Video pre and post-amble.46 7.4.3
15、Video sync block.46 7.5 Subcode sector.48 7.5.1 Structure.48 7.5.2 Subcode preamble and postamble.49 7.5.3 Subcode sync block.49 7.6 Edit gap.51 8 Audio processing.51 8.1 Introduction.51 8.2 Encoding mode.52 8.2.1 Source coding.52 8.2.2 Emphasis.52 8.2.3 Audio error code.52 8.2.4 Relative audio-vide
16、o timing.52 8.2.5 Audio frame processing.52 8.3 Audio shuffling.54 8.4 Audio auxiliary data(AAUX).55 8.4.1 AAUX source pack(AS).56 8.4.2 AAUX source control pack(ASC).57 8.5 Error correction code addition.58 8.5.1 Inner error correction code.58 8.5.2 Outer error correction code.58 9 Video processing.60 9.1 Introduction.60 9.2 Compressed macro block and data-sync block.60 9.3 Video auxiliary data(VAUX).62 9.3.1 VAUX source pack(VS).63 9.3.2 VAUX source control pack(VSC).64 9.4 Error correction co