1、 IEC 62071-3 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 3: Data stream format Systme de magntoscope numrique cassette balayage hlicodal signal compress utilisant la bande magntique
2、de 6,35 mm Format D-7 Partie 3: Format de suites de donnes IEC 62071-3:2005 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2005 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, electron
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16、ez-nous: csciec.ch. IEC 62071-3 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 3: Data stream format Systme de magntoscope numrique cassette balayage hlicodal signal compress utilisant
17、la bande magntique de 6,35 mm Format D-7 Partie 3: Format de suites de donnes INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE T ICS 33.160.40 PRICE CODE CODE PRIX ISBN 978-2-8322-0728-4 Registered trademark of the International Electrotechnical Commission Marque
18、dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 62071-3 IEC:2005 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normati
19、ve 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 block 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
20、 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 diagram of D-7 recorder 23 Bibliography 24 Figure 1 Stream block format . 7 Figure 2 Signal type (ST) word
21、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 in one frame for the 25 Mb/s structure 12 Figure 8 Transmission order in a D
22、IF 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 multichannel units transmission (525/60 SDTI system) . 19 Figure 12 Chann
23、el 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 (625/50 SDTI system) 22 Figure A.1 Block diagram of D-7 recorder . 23
24、Table 1 Start lines of channel units . 18 62071-3 IEC:2005 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 worldw
25、ide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other act
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35、al Standard IEC 62071-3 has been prepared by technical area 6: Higher data rate storage media, data structures and equipment of IEC technical committee 100: Audio, video and multimedia systems and equipment. This bilingual version (2013-07) corresponds to the monolingual English version, published i
36、n 2005-10. The text of this standard is based on the following documents: CDV Report on voting 100/902/CDV 100/986/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this standard has not been
37、voted upon. 4 62071-3 IEC:2005 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 62071 consists of the following parts, under the general title Helical-scan compressed digital video cassette system using 6,35 mm magnetic tape Format D-7: Part 1: VTR specificati
38、ons Part 2: Compression format Part 3: Data stream format This part 3 describes the specifications for transmission of DV-based compressed video and audio data stream over 270Mb/s and 360 Mb/s serial digital interface. Part 1 describes the VTR specifications which are tape, magnetization, helical re
39、cording, modulation method and basic system data for video compressed data. Part 2 describes the specifications for encoding process and data format for 525i and 625i systems. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indi
40、cated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. 62071-3 IEC:2005 5 HELICAL-SCAN COMPRESSED DIGITAL VIDEO CASSETTE SYSTEM USING 6,35 mm MAG
41、NETIC TAPE FORMAT D-7 Part 3: Data stream format 1 Scope This part of IEC 62071 defines the format of the data stream for the synchronous exchange of DV-based audio, data, and compressed video (whose data structure is defined in SMPTE 314M) over the interface defined in SMPTE 305M. It covers the tra
42、nsmission of audio, subcode data and compressed video packets associated with DV-based 25 and 50 Mb/s data structures including faster-than-real-time transmission for 525/60 SDTI and 625/50 SDTI systems. This standard does not include the data stream of a DV-compressed structure as defined in SMPTE
43、322M. Space within SMPTE 305M not used by a data stream conforming to this standard may be used for the transmission of data other than those representing DV-based audio, data and compressed video. In this standard, the 60 Hz system refers to the field frequency 59,94 Hz system and the 50 Hz system
44、refers to the field frequency 50,0 Hz system. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any a
45、mendments) applies. SMPTE 305M: 2005, Television Serial Data Transport Interface SMPTE 314M: 1999, Television Data Structure for DV-Based Audio, Data and Compressed Video 25 and 50 Mb/s SMPTE 322M: 2004, Television Format for Transmission of DV Compressed Video, Audio and Data Over a Serial Data Tra
46、nsport Interface 3 Abbreviations and acronyms DIF: Digital interface DVF: DIF valid flag ECC: Error correction code FF: Field/frame frequency flag FSNF: Frame sequence number flag SDI: Serial digital interface SDTI: Serial data transport interface ST: Signal type STVF: Signal type of video frame TRF
47、 Transmission rate flag TT: Transmission type 6 62071-3 IEC:2005 4 Identification within the serial data transport interface (SDTI) 4.1 SDTI header packet data The header packet data words of the serial data transport interface (SDTI) associated with this data stream format shall conform to SMPTE 3
48、05M. When the SDTI interface is transporting a data stream conforming to this standard, the block type word within the SDTI header packet shall have the value 173h for transported data contained in fixed-size blocks when ECC (error correction code) is used and the value 233h when ECC is not used. 4.
49、2 Payload The payload is composed of consecutive fixed-size blocks (see Figure 1). The SDTI data type word shall identify the data type of this payload with the value 221h. 5 Stream block format The stream block format is shown in Figure 1. The length of each stream block is 170 words, including a secondary header, two DIF (digital interface) block IDs, two DIF block data (of s
