1、BRITISH STANDARD BS EN 61834-1:1998 IEC 61834-1:1998 Incorporating Amendment No. 1 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 The European Standard EN 61834-1
2、:1998, with the incorporation of amendment A1:2001, has the status of a British Standard ICS 33.160.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 61834-1:1998 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, wa
3、s published under the authority of the Standards Committee and comes into effect on 15 December 1998 BSI 3 July 2002 ISBN 0 580 30870 7 National foreword This British Standard is the English language version of EN 61834-1:1998, including amendment A1:2001. It is identical with IEC 61834-1:1998. The
4、UK participation in its preparation was entrusted by Technical Committee EPL/100, Audio, Video and Multimedia Systems and Equipment, to Subcommittee EPL/100/2, Recording, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committe
5、e any enquiries on the interpretation, or proposals 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. From 1 Janu
6、ary 1997, all IEC publications have the number 60000 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 The Br
7、itish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards O
8、nline. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its 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
9、inside front cover, pages i and ii, the EN title page, pages 2 to 55 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 13618 3 July 2002 Addition of Annex ABS EN 61834-1:1998 B
10、SI 3 July 2002 i Contents Page National foreword Inside front cover Foreword 2 Text of EN 61834-1 5ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61834-1 October 1998 + A1 July 2001 ICS 33.160.40 Descriptors: Video equipment, digital technics, magnetoscopes, video recording, sound reco
11、rding, cassette for magnetic tapes, magnetic tapes, specifications, recording characteristics, dimensions, position (location), modulation, data blocks, electrical properties, mechanical properties, interchangeability English version Recording Helical-scan digital video cassette recording system usi
12、ng 6,35 mm magnetic tape for consumer use (525-60, 625-50, 1125-60 and 1250-50 systems) Part 1: General specifications (includes amendment A1:2001) (IEC 61834-1:1998 + A1:2001) Enregistrement Systme de magntoscope numrique cassette balayage hlicodal utilisant la bande magntique de 6,35 mm, destin au
13、 grand public (Systmes 525-60, 625-50, 1125-60 et 1250-50) Partie 1:Spcifications gnrales (inclut lamendement A1:2001) (CEI 61834-1:1998 + A1:2001) Aufzeichnung Videokassettensystem mit digitaler Schrgspuraufzeichnung auf Magnetband 6,35 mm fr den Heimgebrauch (Systeme 525-60, 625-50, 1125-60 und 12
14、50-50) Teil 1: Allgemeine Festlegungen (enthlt nderung A1:2001) (IEC 61834-1:1998 + A1:2001) This European Standard was approved by CENELEC on 1998-10-01; amendment A1:2001 was approved by CENELEC on 2001-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stip
15、ulate 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 member. This European Standa
16、rd 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. CENELEC members are the nationa
17、l 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. CENELEC European Committee for Electrotechnical Standardization Comit Europ
18、en de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61834-1:1998 + A1:2001 EEN 61834-1:1
19、998 BSI 3 July 2002 2 Foreword The text of document 100B/165/FDIS, future edition 1 of IEC 61834-1, prepared by SC 100B, Recording, 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 61834-1 on 1998-10-01
20、. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC 61834-1:1998 was approved by CENELEC as a European Standar
21、d without any modification. Foreword to amendment A1 The text of document 100B/285/FDIS, future amendment 1 to IEC 61834-1:1998, 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-CE
22、NELEC parallel vote and was approved by CENELEC as amendment A1 to EN 61834-1:1998 on 2001-05-01. The following dates were fixed: Endorsement notice The text of amendment 1:2001 to the International Standard IEC 61834-1:1998 was approved by CENELEC as an amendment to the European Standard without an
23、y modification. Contents Page Foreword 2 1 General 5 1.1 Scope 5 1.2 Normative reference 5 1.3 Definitions, symbols and abbreviations 5 1.4 Environment and test conditions 6 2C a s s e t t e 6 2.1 Mechanical parameters 6 2.1.1 Cassette dimensions 6 2.1.2 Identification of cassette 6 2.1.3 Tape lengt
24、h 6 2.1.4 Coating face 6 2.1.5 Datum hole and datum plane 6 2.1.6 Window and labels 7 2.1.7 Identification/MIC contacts 7 2.1.8 Accidental erasure prevention holes 7 2.1.9 Leader/trailer tape 8 2.1.10 Reels 8 2.1.11 Protection lid 8 2.2 Tape specification 8 2.2.1 Type of magnetic tape 8 2.2.2 Base 8
25、 2.2.3 Width 9 2.2.4 Width fluctuation 9 2.2.5 Tape thickness 9 2.2.6 Transmissivity 9 3 Helical recordings 9 3.1 Tape speed 9 3.2 Record location and dimensions 9 3.2.1 Reference edge 9 3.2.2 Effective area 9 3.2.3 Record and playback guaranteed heights 9 3.2.4 Track pitch 9 3.2.5 Helical track 10
26、4S y s t e m d a t a 1 0 4.1 Introduction 10 4.2 Application ID 10 4.3 System data for tape 10 4.3.1 Basic system data 10 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-07-01 latest date by which the n
27、ational standards conflicting with the EN have to be withdrawn (dow) 2001-07-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-02-01 latest date by which the national standards conflicting with
28、the amendment have to be withdrawn (dow) 2004-05-01EN 61834-1:1998 BSI 3 July 2002 3 Page 4.3.2 Application ID on tape 10 4.3.3 Area 11 4.4 System data for MIC 11 4.4.1 Basic system data 11 4.4.2 Application ID on MIC 11 4.4.3 Space 11 5M o d u l a t i o n 1 1 5.1 Introduction 11 5.2 Byte position n
29、umber 0, 1, 2 12 5.2.1 Sync patterns 12 5.2.2 Randomization and modulation 12 5.3 Byte position number 3k, 3k + 1, 3k + 2 (where k 1) 12 5.3.1 Randomization 12 5.3.2 Modulation 12 5.4 Track F0, track F1, track F2 13 5.5 Edit gap, run-up, guard area, preamble and postamble 13 6 ITI sector (area 0) 13
30、 6.1 Introduction 13 6.2 ITI preamble 13 6.3 SSA (start-sync block area) 13 6.4 TIA (track information area) 14 6.5 ITI postamble 14 7 Magnetization 15 7.1 Polarity 15 7.2 Recorded equalization 15 7.3 Record level 15 Annex A (normative) LP mode (long play mode with narrow track pitch) 52 Annex ZA (n
31、ormative) Normative references to international publications with their corresponding European publications 55 Figure 1 Top view and side view of standard cassette 16 Figure 2 Bottom view of standard cassette 17 Figure 3 Datum area and support area for standard cassette 18 Figure 4 Internal structur
32、e and tape path for standard cassette 19 Figure 5 Reels for standard cassette 20 Figure 6 Reel lock and release for standard cassette 21 Figure 7 Lid lock and release for standard cassette 22 Figure 8 Lid for standard cassette 23 Figure 9 Minimum space for recorder/player loading mechanism for stand
33、ard cassette 24 Page Figure 10 Light path and leader/trailer tape for standard cassette 25 Figure 11 Contact area of ID board or MIC for standard cassette 26 Figure 12 Top and side view of small cassette 27 Figure 13 Bottom view of small cassette 28 Figure 14 Datum area and support area for small ca
34、ssette 29 Figure 15 Internal structure and tape path for small cassette 30 Figure 16 Reels for small cassette 31 Figure 17 Reel lock and release for small cassette 32 Figure 18 Lid lock and release for small cassette 33 Figure 19 Lid for small cassette 34 Figure 20 Minimum space for recorder/player
35、loading mechanism for small cassette 35 Figure 21 Light path and leader/trailer tape for small cassette 36 Figure 22 Contact area of ID board or MIC for small cassette 37 Figure 23 Record location and dimensions 38 Figure 24 ITI sector location from SSA 39 Figure 25 Lag between each pair of successi
36、ve tracks at the beginning of the SSA 39 Figure 26 Division of a track prescribed by APT 40 Figure 27 The layer of application IDs on tape 40 Figure 28 Address 0 of bank 0 40 Figure 29 MIC memory space 41 Figure 30 Bit stream before interleaved NRZ1 modulation 41 Figure 31 Frequency characteristics
37、42 Figure 32 Structure of ITI sector 43 Figure 33 Structure of a start-sync block 43 Figure 34 Structure of a TI-sync block 43 Table 1 Mechanical tolerances 15 Table 2 Assignment of the four contacts 15 Table 3 Record location and dimensions 38 Table 4 ITI sector location from SSA 38 Table 5 Bit str
38、eam of ITI preamble for track F0 44 Table 6 Bit stream of ITI preamble for track F1 45EN 61834-1:1998 BSI 3 July 2002 4 Page Table 7 Bit stream of ITI preamble for track F2 46 Table 8 Bit stream of SSA for track F0 47 Table 9 Bit stream of SSA for track F1 48 Table 10 Bit stream of SSA for track F2
39、49 Table 11 Bit stream of TIA for track F0 50 Table 12 Bit stream of TIA for track F1 50 Table 13 Bit stream of TIA for track F2 50 Table 14 Application ID of a track in TIA 50 Table 15 Bit stream of ITI postamble for track F0 51 Table 16 Bit stream of ITI postamble for track F1 51 Table 17 Bit stre
40、am of ITI postamble for track F2 51 Table A.1 Record location and dimensions 52 Table A.2 ITI sector location with respect to SSA 53 Table A.3 Sector location from SSA (525-60 system) 54 Table A.4 Sector location from SSA (625-50 system) 54EN 61834-1:1998 BSI 3 July 2002 5 1 General 1.1 Scope This p
41、art of IEC 61834 specifies the content, format and recording method of the data blocks forming the helical records on the tape. It describes the common specifications for cassettes, modulation method, magnetization and basic system data, for helical-scan digital video cassette recording system using
42、 6,35 mm (1/4 inch) magnetic tape. The object of this standard is to define the electrical and mechanical characteristics of equipment which will provide for the interchangeability of recorded cassettes. 1.2 Normative reference The following normative document contains provisions which, through refe
43、rence in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of appl
44、ying the most recent edition of the normative document listed below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 61834-2, Recording Helical-scan digital video cassette recording system using 6,5 mm magnetic tape for consumer use (525-60, 625-50, 1 125-60
45、 and 1 250-50 systems) Part 2: SD format for 525-60 and 625-50 systems 1) . 1.3 Definitions, symbols and abbreviations For the purpose of this International Standard, the following definitions or abbreviations apply. 525-60 system standard definition television signal in the 525-line system with a f
46、rame frequency of 29,97 Hz 625-50 system standard definition television signal in the 625-line system with a frame frequency of 25,00 Hz 1125-60 system high definition television signal in the 1125-line system with a frame frequency of 30,00 Hz 1250-50 system high definition television signal in the
47、 1250-line system with a frame frequency of 25,00 Hz 1) To be published. VCR: Video cassette recorder. APi: Application ID of area i, where i = 1, 2, 3,., n. APM: Application ID of MIC. APT: Application ID of a track. BCID: Basic cassette ID. EEPROM: Electrical erasable programmable read only memory
48、. FeRAM: Ferroelectronic random access memory. FID: First ID of a start-sync block. FTI: First track information of a TI-sync block. GF: Galois field. ITI: Insert and track information. LSB: Least significant bit of data. MIC: Memory in cassette. MSB: Most significant bit of data. NRZ1: Non-return t
49、o zero change on one or non-return to zero mark. PF: Pilot frame of tracking servo. SCK: Serial clock line. SDA: Serial data line.EN 61834-1:1998 6 BSI 3 July 2002 1.4 Environment and test conditions Tests and measurements for checking the conformity with the requirements of this standard shall be carried out under the following conditions. 2 Cassette 2.1 Mechanical parameters 2.1.1 Cassette dimensions The
