IEC_62447-1-2007.pdf

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,SUPPLIED 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,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch 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 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)CONTENTS 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 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 record 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 General.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 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 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-video 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