1、 INTERNATIONAL STANDARD IEC62071-3 First edition2005-10 Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-7 Part 3:Data stream format Reference number IEC 62071-3:2005(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIE
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8、19 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 IEC62071-3 First edition2005-10 Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-7 Part 3:Da
9、ta stream format 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
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11、BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62071-3 IEC:2005(E)CONTENTS 1 Scope.5 2 Normative references.5 3 Abbreviations and acronyms.5 4 Identification within the serial data transport interface(SDTI).6 4.1 SDTI header packet data.6 4.2 Payload.6 5 Stream bloc
12、k format.6 5.1 Reserved data words.7 5.2 Signal type words.7 5.3 Transmission type word.9 5.4 DIF block ID words.10 5.5 DIF block data words.10 5.6 Error correction code(ECC)words.10 6 Transmission order.11 7 Mapping structure.14 7.1 Channel unit.14 7.2 Mapping rules.14 Annex A(informative)Block dia
13、gram of D-7 recorder.23 Figure 1 Stream block format.7 Figure 2 Signal type(ST)word mapping.7 Figure 3 Transmission type(TT)word mapping.9 Figure 4 Mapping of DIF block ID.10 Figure 5 Mapping of ECC.11 Figure 6 Transmission order in one frame for the 50 Mb/s structure.12 Figure 7 Transmission order
14、in one frame for the 25 Mb/s structure.12 Figure 8 Transmission order in a DIF sequence.13 Figure 9 Channel unit mapping for the 25 Mb/s structure(525/60 SDTI system).16 Figure 10 Channel unit mapping for the 25 Mb/s structure(625/50 SDTI system).17 Figure 11 Channel unit mapping in a synchronized m
15、ultichannel units transmission (525/60 SDTI system).19 Figure 12 Channel unit mapping in a synchronized multichannel units transmission (625/50 SDTI system).20 Figure 13 Channel unit mapping for the 50 Mb/s structure(525/60 SDTI system).21 Figure 14 Channel unit mapping for the 50 Mb/s structure(625
16、/50 SDTI system).22 Figure A.1 Block diagram of D-7 recorder.23 Table 1 Start lines of channel units.18 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62071-3 IEC:2005(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM USING 6,35 mm MAGNETIC TAPE FORMAT D-7 Part 3:Data stream format FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organization for standa
