1、W Lb24bb 0858L07 398 BRITISH STANDARD 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 3: HD format for 1125-60 and 1250-50 systems The European Standard EN 618343:2000 has the status of a British St
2、anard ICs 33.160.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMI“ED BY COPYRIGHT LAW BS EN 31834-3:2000 IEC 61834-3:1999 lib24bb 0858L08 224 W BS EN 618343:2000 National foreword This British Standard is the official English language version of EN 6134-3:2000. It is identical with IEC 618343199
3、9. The UK participation in its preparation was entrusted by Technical Committee EPIJ100, Audio, video and multimedia systems, to Subcommittee EPL1100/2, Recording, which has the responsibility to: - aid enquirers to undemtand the text, - present to the responsible internationaVEuropean committee any
4、 enquiries on the interpretation, or proposais for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Rom 1 January
5、1997, all IEC publications have the number 6 added to the old number. For instance, IEC 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 d
6、rawn to the fact that CEN and CENELEC Standards nody include an annex which lists nomiative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found
7、in the BSI Standards Catalogue under the section entitled “International Stan- Correspondence Index”, or 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 r
8、esponsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 64, an inside back cover and a back cover. The BSI copy
9、right notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the direction of the Electsotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 August 2000 Amendmen
10、ts issued since publication Comments Amd.No. ID* ISBN O 580 36215 9 1624669 0858109 Lb0 = EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61834-3 March 2000 ICs 33.160.40 English version Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer us
11、e (525-60, 625-50, I 125-60 and 1250-50 systems) Part 3: HD format for 1125-60 and 1250-50 systems (IEC 61 834-3: 1999) Enregistrement - Systmes de magntoscopes numriques cassette balayage hlocodal sur bande magntique de 6,35 mm pour usage grand public (systmes 525-60, 625-50, 1 125-60 et 1250-50) P
12、artie 3: Format HD pour les systmes 1 125-60 et 1250-50 (CEI 61 834-3: 1999) Aufzeichnung - Videokassettensystem mit digitaler Schrgspuraufzeichnung auf Magnetband 6,35 mm fr den Heimgebrauch (Systeme 525-60, 625-50, 1 125-60 und 1250-50) Teil 3: HD-Format fr die Systeme 1 125-60 und 1250-50 (IEC 61
13、 834-31999) This European Standard was approved by CENELEC on 2000-01-01. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibl
14、iographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibili
15、ty of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Lux
16、embourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, 8 - 1050 Br
17、ussels 2000 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61 834-3:2000 E Page 2 EN 61834-3:2000 Foreword The text of document 1 00B/233/FDISf future edition 1 of IEC 61 834-3, prepared by SC 1 OOB “Audio, video and multimedia i
18、nformation storage systems“ des IEC TC 1 O0 “Audio, video and multimedia systems and equipment“, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61 834-3 on 2000-01 -01. The following dates were fixed: - latest date by which the EN has to be implemented at national l
19、evel by publication of an identical national standard or by endorsement (dop) 2000-1 0-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2003-01 -01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“
20、 are given for information only. In this standard, annexes A and ZA are normative and annex B is informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61 834-3: 1999 was approved by CENELEC as a European Standard without any modification. Page
21、 3 EN 61834-3:2000 CONTENTS Page Clause 1 General . 7 1 . 1 Scope . 7 1.2 Normative references 7 1.3 Definitions. symbols and abbreviations 8 1.4 Environment and test conditions 8 1.5 Reference tape . 8 1.6 Calibration tape 8 1.6.1 Record locations and dimensions . 8 1.6.2 Calibration signals . 8 1.
22、6.3 Purchase . 8 2 Helical recordings 8 2.1 Tape speed . 8 2.2 Record location and dimensions 8 2.2.1 Scanner example 9 Programme track data arrangement 9 3.1 Introduction 9 3.2 Labelling convention . 9 3.3 Audio sector . 9 3.4 Video sector . 9 3.5 Subcode sector . 9 4 Audio interface 10 5 Video int
23、erface 10 6 Audio signal processing . 10 6.1 introduction 10 6.2 Error correction code 10 6.3 Randomization pattern 10 6.4 Audio encoding . 10 6.5 Audio channel allocation . 10 6.5.1 Audio block . 10 6.5.2 Audio channel mode 10 6.5.3 Channel allocation rule 11 6.6 Frame structure 12 6.6.1 Relative a
24、udio-video timing 12 6.6.2 Audio frame processing . 12 6.7 Shuffling method . 12 6.7.1 48k, 44,1k, 32k modes . 13 6.7.2 32k-2ch modes 14 6.8 Audio auxiliary data (AAUX) 14 6.9 invalid recording . 14 Video signai processing . 14 7.1 introduction 14 7.2 Error correction code 14 3 7 7.3 Randomization p
25、attern 15 O BSI 08-2000 Page 4 EN 61834-3:2000 7.4 7.5 7.6 7.7 7.8 7.9 7.10 7.1 1 7.12 Video structure . 15 7.4.1 7.4.2 7.4.3 7.4.4 7.4.5 7.4.6 Sampling structure 15 Macro block 16 DCT block . 16 Super block . 17 Definition of super block number, macro block number and value of the pixel 17 Definiti
26、on of video segment and compressed macro block 18 DCT processing 18 Quantization . 18 7.6.1 Introduction . 18 7.6.2 Bit assignment for quantization 19 7.6.3 Class number 19 7.6.4 Initial scaling . 19 7.6.5 Area number . 19 7.6.6 Quantization step 20 Variable length coding (VLC) . 20 Arrangement of a
27、 compressed macro block . 20 7.8.1 STA (status of the compressed macro block) 20 7.8.2 QNO (quantization number) . 20 7.8.3 DC 20 7.8.4 AC 20 Arrangement of a video segment . 20 7.9.1 Arrangement algorithm of a video segment 21 7.9.2 Video error code processing 22 Data-sync block and compressed macr
28、o block . 23 Video auxiliary data (VAUX) 23 Invalid recording . 23 8 Subcode signal processing . 23 8.1 The recording periods of TAG ID . 23 8.2 The writing method of the optional area . 24 8.3 The rewriting periods of TAG ID 24 9 System data 24 9.1 9.2 9.3 9.4 10 Data 10.1 10.2 10.3 10.4 10.5 10.6
29、AAUX . 24 VAUX . 25 Subcode . 26 MIC 26 structure for digital interface . 26 Introduction 26 Data structure . 26 DIF sequence . 27 DIF block 27 10.4.1 IDpart 27 10.4.2 Data part . 27 Playback speed 30 Frame period 29 O BSI 08-2000 Page 6 EN 61834-3:2000 Annex A (norma ive) 20 bits audio for profes i
30、onal use 58 A.l Channel allocation . 58 A.2 Encoding mode 58 A.3 Audio error code 58 A.4 Shuffling method 58 Annex B (informative) Manufacturers . 63 B.l Reference tape 63 8.2 Calibration tape . 63 8.3 Purchase . 63 Annex ZA (normative) Normative references to international publications with their c
31、orresponding European publications . 64 Figure I Sector arrangement on helical track (1 125-60 and 1250-50 systems) . 31 Figure 3 . 1250-50 system . 32 Figure 4 . Transmitting samples for 1125-60 system . 38 Figure 5 . Transmitting samples for 1250-50 system . 39 Figure 7 . DCT block arrangement . 4
32、0 Figure 8 . Macro block and DCT block order . 40 Figure 2 . 1125-60 system . 31 Figure 6 . DCT block and the pixel coordinates 39 Figure 9 . Arrangement of macro blocks for 1125-60 system . 41 Figure 10 . Super blocks and macro blocks in a frame on TV screen for 1125-60 system . 42 Figure 11 . Supe
33、r blocks and macro blocks in a frame on TV screen for 1250-50 system . 43 Figure 12 . Macro block order in a super block . 44 Figure 13 . Area number 44 Figure 14 . The arrangement of a compressed macro block 45 Figure 16 . The relation between the compressed macro block number and the data-sync blo
34、ck 47 Figure 17 . Main area and optional area (1 125-60 system) . 48 Figure 18 . Main area and optional area (1250-50 system) . 49 Figure 19 . Data structure for transmission . 51 Figure 20 . Transmission order of DIF blocks in a DIF sequence . 52 Figure 21 . ID data in a DIF block 53 Figure 22 . Da
35、ta in the header section . 53 Figure A.l -Sample to data bytes conversion for 20 bits . 62 Figure 15 . The arrangement of a video segment after bit-rate reduction . 46 Table I . Record location and dimensions (I 125-60 system. 1250-50 system) 30 Table 2 . Sector location from SSA (1 125-60 system. 1
36、250-50 system) . 30 Table 3 . Scanner example (1 125-60 system. 1250-50 system) . 30 Table 4 . Sequence number (1125-60 and 1250-50 systems) 32 Table 5 . Track pair number (1125-60 system) . 32 Table 6 . Track pair number (1250-50 system) . 33 Table 7 . Construction of an audio block 33 Table 8 . Ba
37、sic channel allocation rule in multi-stereo audio . 34 Table 9 . Channel allocation rule for lumped audio . 35 Q BSI 08-2000 Page 6 EN 61834-3:2000 Table 10 . The num er of audio samples per frame (unlocked mode) 36 Table 11 . The allowance range of the accumulated difference value between the numbe
38、rs of audio samples per frame in synchronous channels 36 Table 12 -The number of audio samples per frame (locked mode) . 36 Table 14 . An example of the classification for reference 44 Table 15 . Quantization step 45 Table 16 - AAUX data of the main area 50 Table 17 - VAUX data of the main area 50 T
39、able 18 - TIA data in the header section . 54 Table 19 - DIF blocks and subcode sync blocks . 54 Table 20 - DIF blocks and VAUX data-sync blocks . 55 Table 21 - DIF blocks and audio data-sync blocks 56 Table 22 - DIF blocks and compressed macro blocks . 57 Table A.l - Basic channel allocation rule 6
40、2 Table 13 . The construction of video signal sampling (1 2:4:4) . 37 O BSI 08-2000 Page 7 EN 61834-3:2000 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 3: HD format for 1125-60 and 1
41、250-50 systems I General 1.1 Scope The main object of this part of IEC 61834 is to establish basic principles applicable to the next generation of digital video cassette recording systems for consumer use for the interest of both users and manufacturers. This part of IEC 61834 specifies the content,
42、 format and recording method of the data blocks forming the helical records on the tape containing audio, video, and system data. It describes the specifications for the 1125-line system with a frame frequency of 30,OO Hz (hereinafter referred to as the “1125-60 system“) and the 1250-line system wit
43、h a frame frequency of 25,OO Hz (hereinafter referred to as the “1250-50 system“) which are not included in parts 1 and 2. One video channel and four independent audio channels are recorded in the digital format. Each of these channels is designed to be capable of independent editing. The video chan
44、nel records and reproduces a component television signal in the 1125-60 and 1250-50 systems. In part 3, the data structure of a track is defined by APT = 000b which consists of four areas as described in 4.3.2 in part 1 and API = AP2 = AP3 = 000b. The data structure of MIC is the same as clause 10 i
45、n IEC 61834-2. 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, parti
46、es to agreements 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 IS0 maintain re
47、gisters of currently valid International Standards. IEC 61 834-2: 1998, Recording - Helical-scan digital video cassette recording system using 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1725-60 and 1250-50 systems) - Part 2: SD format for 525-60 and 625-50 systems ITU-R Recommendation B
48、T.709-3: 1998, Parameter values for the HDTV standards for production and international programme exchange ITU-R Recommendation 88.775-1 :I 993, Multi-channel stereophonic sound systems with and without accompanying picture O BSI 08-2000 Page 8 EN 61834-3:2000 1.3 Definitions, symbols and abbreviati
49、ons None 1.4 Environment and test conditions Tests and measurements made on the system to check the requirements of this standard shall be carried out under the following conditions. - Temperature: 20 “C f 1 OC; - Relative humidity: (50 f 2) %; - Barometric pressure: from 86 kPa to 106 kPa; - Tape conditioning: not less than 24 h. 1.5 Reference tape Blank tape to be used for calibration recordings may be purchased from the manufacturers given in annex B. 1.6 Calibration tape Manufacturers of video tape recorders designed for this format specification may s
