1、BRITISH STANDARD BS EN 61834-6:2001 IEC 61834-6:2000 Recording Helical- scan digital video cassette recording system using 6, 35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 6: SDL format The European Standard EN 61834-6:2000 has the status of a British Standa
2、rd ICS 33.160.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61834-6:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15
3、 June 2001 BSI 06-2001 ISBN 0 580 37265 0 National foreword This British Standard is the official English language version of EN 61834- 6:2000. It is identical with IEC 61834-6:2000. The UK participation in its preparation was entrusted by Technical Committee EPL/100, Audio, video and multimedia sys
4、tems and equipment, to Subcommittee EPL/100/2, Recording, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC
5、27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists no
6、rmative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, o
7、r by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer
8、immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate
9、them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 45, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments
10、EUROPEAN STANDARD EN 61834-6 NORME EUROPENNE EUROPISCHE NORM November 2000 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2000
11、CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61834-6:2000 E ICS 33.160.40 English version Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 an
12、d 1250-50 systems) Part 6: SDL format (IEC 61834-6:2000) Enregistrement - Systmes de magntoscopes numriques cassette balayage hlicodal sur bande magntique de 6,35 mm, pour usage grand public (systmes 525-60, 625-50, 1125-60 et 1250-50) Partie 6: Format SDL (CEI 61834-6:2000) Aufzeichnung - Videokass
13、ettensystem mit digitaler Schrgspuraufzeichnung auf Magnetband 6,35 mm fr den Heimgebrauch (Systeme 525-60, 625-50, 1125-60 und 1250-50) Teil 6: SDL-Format (IEC 61834-6:2000) This European Standard was approved by CENELEC on 2000-09-01. CENELEC members are bound to comply with the CEN/CENELEC Intern
14、al 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 mem
15、ber. 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. CENELE
16、C 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.Foreword The text of document 100B/263/FDIS, future
17、 edition 1 of IEC 61834-6, 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 61834-6 on 2000-09-01. The following dates were
18、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) 2001-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2003-09-01 Annexes designated “normative“ are
19、part of the body of the standard. In this standard, annexes A, B and ZA are normative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61834-6:2000 was approved by CENELEC as a European Standard without any modification. _ Page2 EN618346:2000 BSI 0
20、6-2001 CONTENTS Page Clause 1 General 6 1.1 Scope. 6 1.2 Normative references 6 1.3 Definitions, symbols and abbreviations 7 1.4 Environment and test conditions 7 2 Helical recordings 7 2.1 Tape speed. 7 2.2 Record location and dimensions 7 3 Programme track data arrangement . 8 3.1 Introduction. 8
21、3.2 Labelling convention . 8 3.3 Audio sector 8 3.4 Video sector 8 3.5 Subcode sector. 8 4 Audio interface. 8 5 Video interface. 8 6 Audio signal processing . 8 6.1 Introduction. 8 6.2 Error correction code 9 6.3 Randomization pattern 9 6.4 Audio encoding . 9 6.5 Audio channel allocation . 9 6.6 Fra
22、me structure 9 6.7 Shuffling method10 6.8 Audio auxiliary data (AAUX) .11 6.9 Invalid recording 11 7 Video signal processing 11 7.1 Introduction11 7.2 Error correction code .11 7.3 Randomization pattern .11 7.4 Video structure 11 7.5 DCT processing .15 7.6 Quantization 15 7.7 Variable length coding
23、(VLC)15 7.8 Arrangement of a compressed macro block15 7.9 Arrangement of a video segment16 7.10 Data-sync block and compressed macro block .17 7.11 Video auxiliary data (VAUX) .17 7.12 Invalid recording 17 Page3 EN618346:2000 BSI 06-2001 Clause Page 8 Subcode signal processing18 8.1 The recording pe
24、riods of TAG ID18 8.2 FR ID.18 8.3 Main area and optional area.18 9 System data18 9.1 AAUX 18 9.2 VAUX 19 9.3 Subcode 20 9.4 MIC .20 10 Data structure for digital interface21 10.1 Introduction21 10.2 Data structure21 10.3 DIF sequence 21 10.4 DIF block .21 10.5 Frame period .22 10.6 Playback speed22
25、 Annex A (normative) Long play mode with narrow track pitch .40 A.1 Helical recordings 40 A.2 Absolute track number .40 Annex B (normative) Definition of AUX position on digital interface in SDL mode.43 B.1 Transmitting pattern.43 B.2 Data structure for digital interface 43 Annex ZA (normative) Norm
26、ative references to international publications with their corresponding European publications 45 Figure 1 Frames and tracks (525-60 system) 25 Figure 2 Frames and tracks (625-50 system) 25 Figure 3 Transmission samples for 525-60 system28 Figure 4 Transmission samples for 625-50 system29 Figure 5 DC
27、T block and the pixel coordinates .29 Figure 6 Rightmost DCT block in the colour difference signal30 Figure 7 DCT block arrangement 30 Figure 8 Macro block and DCT blocks.31 Figure 9 Super blocks and macro blocks in a frame on TV screen for 525-60 system 31 Figure 10 Super blocks and macro blocks in
28、 a frame on TV screen for 625-50 system 32 Figure 11 Macro block order in a super block32 Figure 12 Arrangement of video segment after bit rate reduction.33 Figure 13 The relationship between the compressed macro block number and the data-sync block .34 Figure 14 Data structure for transmission36 Fi
29、gure B.1 Data in the header section .44 Figure B.2 DFF and VAUX main area44 Page4 EN618346:2000 BSI 06-2001 Page Table 1 Record location and dimensions.23 Table 2 Sector location from SSA (525-60 system) .23 Table 3 Sector location from SSA (625-50 system) .24 Table 4 Scanner example .24 Table 6 Tra
30、ck pair number (625-50 system)26 Table 7 Audio encoding mode in an audio block26 Table 8 The construction of an audio block .27 Table 9 Basic channel allocation rule in SD-2ch audio.27 Table 10 Number of audio samples per frame (unlocked mode) 27 Table 11 Number of audio samples per frame (locked mo
31、de) .27 Table 12 Subcode data in the main operational area and recommended data for the optional area in the case of no optional use (for users tape) 35 Table 13 Subcode data in the main operational area and recommended data for the optional area in the case of no optional use (for pre-recorded tape
32、)35 Table 14 DIF sequence numbering (525-60 system)36 Table 15 DIF sequence numbering (625-50 system)36 Table 16 DIF blocks and subcode sync blocks 37 Table 17 DIF blocks and VAUX data-sync blocks 37 Table 18 DIF blocks and audio data-sync blocks.38 Table 19 DIF blocks and compressed macro blocks39
33、Table A.1 Record location and dimensions41 Table A.2 Sector location from SSA (525-60 system) 41 Table A.3 Sector location from SSA (625-50 system) 42 Table B.1 Transmitting pattern43 Table B.2 DIF frame flag.44 Page5 EN618346:2000 BSI 06-2001 HELICAL-SCAN DIGITAL VIDEO CASSETTE RECORDING SYSTEM USI
34、NG 6,35 mm MAGNETIC TAPE FOR CONSUMER USE (525-60, 625-50, 1125-60 and 1250-50 systems) Part 6: SDL format 1 General 1.1 Scope This part of IEC 61834 describes the format extension, using higher compression to increase recording time and reduce running cost. While all DVCRs must have the capability
35、of recording and/or playback in SD (SP) mode, this extension is optional. For this part of IEC 61834, the track data structure is defined by APT = 000b which consists of four areas as described in IEC 61834-1, 4.3.2 and AP1 = AP2 = AP3 = 000b. The data structure of MIC is as clause 10 in IEC 61834-2
36、. 1.2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61834. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreeme
37、nts based on this part of IEC 61834 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of cu
38、rrently valid International Standards. IEC 61834-1:1998, Recording Helical-scan digital video 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 Amendment 1 1) IEC 61834-2:1998, Recording Helical-scan di
39、gital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 2: SD format for 525-60 and 625-50 systems IEC 61834-3, Recording Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (5
40、25-60, 625-50, 1125-60 and 1250-50 systems) Part 3: HD format for 1125-60 and 1250-50 systems IEC 61883-1:1998, Consumer audio/video equipment Digital interface Part 1: General IEC 61883-5:1998, Consumer audio/video equipment Digital interface Part 5: SDL-DVCR data transmission ITU-R Recommendation
41、601-2, Encoding parameters of digital television for studios ITU-R Report 624-4, Characteristics of television systems _ 1)To be published. Page6 EN618346:2000 BSI 06-2001 1.3 Definitions, symbols and abbreviations For the purpose of this part of IEC 61834, the following definitions or abbreviations
42、 apply. AAUX: Audio auxiliary data BCH code: Bose-Chaudhuri-Hocquenghem code, one of the well-known error correction codes CGMS: Copy generation management system DCT: Discrete cosine transform EOB: End of block MIC: Memory in cassette NABTS: North American broadcasting teletext specifications OETM
43、events: Optional events except text and makers optional events TOC: Table of contents VAUX: Video auxiliary data VLC: Variable length coding 1.4 Environment and test conditions Same as IEC 61834-2. 2 Helical recordings 2.1 Tape speed The tape speed is 9,424/1,001 mm/s (525-60 system) or 9,424 mm/s (
44、625-50 system). The tape speed tolerance is 0,5 %. 2.2 Record location and dimensions Record location and dimensions for continuous recording shall be as specified in figure 1 of IEC 61834-2. The values are listed in table 1. For recording, helical tracks shall be contained within the tolerance spec
45、ified in table 1. Each sector location from the start of the SSA shall be as specified in figure 2 of IEC 61834-2 and table 2 (525-60 system) or table 3 (625-50 system). The physical tape pattern shall be specified by the centre line of each track. The effective area upper edge, record and playback
46、guarantee, overwrite margin (OM) and switching margin for recording amplifiers are as in IEC 61834-2. 2.2.1 Scanner example Scanner dimensions in table 4 are one possible configuration. Other mechanical configurations are permitted, provided the same footprint of recorded information is produced on
47、tape. Page7 EN618346:2000 BSI 06-2001 3 Programme track data arrangement 3.1 Introduction Each television frame is recorded on 5 tracks for the 525-60 system and 6 tracks for the 625-50 system. The helical tracks are recorded with video, audio and system data as for the SD format in IEC 61834-2. The
48、 arrangement of a track is as shown in IEC 61834-2 for each system. Each track is numbered from the beginning track of the television frame in order. A track which has track number i (i = 0 to 4 for the 525-60 system or i = 0 to 5 for the 625-50 system) is referred to as track i. The pilot frame is
49、performed over two television frame periods for both systems. Placement of F0, F1 and F2 tracks is shown in figure 1 for the 525-60 system, and figure 2 for the 625-50 system. In the 525-60 system, pilot frame 0 and pilot frame 1 alternate with each other. In the 625-50 system, pilot frame 0 repeats. 3.2 Labelling convention Same as IEC 61834-2. 3.3 Audio sector As IEC 61834-2 except
