1、BRITISH STANDARD BS EN 60908:1999 IEC 60908: 1999 Audio recording Compact disc digital audio system The European Standard EN60908:1999 has the status of a BritishStandard ICS 33.160.30BSEN60908:1999 This BritishStandard, having been prepared under the directionof the Electrotechnical Sector Committe
2、e, was publishedunder the authority ofthe Standards Committee andcomes into effect on 15May1999 BSI 03-2000 ISBN 0 580 32517 2 National foreword This BritishStandard is the English language version of EN60908:1999. It is identical with IEC60908:1999. It supersedes BS EN60908:1993 which will be withd
3、rawn on2001-11-01. The 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 internat
4、ional/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 them in the UK. A list of organizations represented on this committee can be obtained on request to its se
5、cretary. From1January1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-ref
6、erences Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in t
7、his document may be found in the BSI Standards Catalogue under the section entitled “International Standards 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. Us
8、ers of British Standards are responsible 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, pagesi andii, theEN title page, pages2 to92 and a back
9、cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN60908:1999 BSI 03-2000 i Contents Page National foreword Inside
10、front cover Foreword 2 Text of EN 60908 5ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60908 March1999 ICS 33.160.30 Supersedes EN60908:1992+A1:1993 Descriptors: Optical recording, sound recording, compact disc, characteristic, interchangeability, measurement, requirement English vers
11、ion Audio recording Compact disc digital audio system (IEC60908:1999) Enregistrement audio Systmeaudionumrique disque compact (CEI60908:1999) Tonaufzeichnung Digital-Audio-System Compact Disc (IEC60908:1999) This European Standard was approved by CENELEC on1998-10-01. CENELEC members are bound to co
12、mply with the CEN/CENELEC 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 bibliographical references concerning such national standards may be obtained on application, to the Central
13、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 responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status
14、 as the official versions. CENELEC 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 UnitedKingdom. CENELEC European C
15、ommittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1999 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC
16、members. Ref. No. EN60908:1999 EEN60908:1999 BSI 03-2000 2 Foreword The text of document100B/173/FDIS, future amendment to IEC60908:1987, prepared by SC100B, Recording, of IEC TC100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by
17、 CENELEC as amendment A2 to EN60908:1992 on1998-10-01. The text of this document, together with that of IEC60908:1987 and its amendment1:1992, was published by IEC as the second edition of IEC60908 in February1999. According to a decision of principle taken by the Technical Board of CENELEC, the app
18、roval of EN60908:1992/A2 has been converted into the approval of a new EN60908. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex B and Annex ZA are normative a
19、nd Annex A, Annex C, Annex D, Annex E and Annex F are informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC60908:1987 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword 2 1 Scope and object 5 2 Norm
20、ative references 5 3 Description of system 5 4 Requirements for measurements 6 4.1 Conditions of measurement 6 4.2 Requirements for the measuring pick-up 6 4.3 Requirements for the clamping of the disc 6 5 Mechanical parameters 6 5.1 Outer dimensions of disc 6 5.2 Centre hole dimensions 6 5.3 Thickn
21、ess of disc 6 5.4 Labelling 7 5.5 Reference plane 7 5.6 Clamping area 7 5.7 Mass of disc 7 5.8 Limits for the deflections of the read-out side of the disc 7 6 Optical parameters 7 6.1 Thickness of transparent substrate 7 6.2 Refractive index 7 6.3 Limits for the angular deviation of the reflected be
22、am (!) 8 6.4 Birefringence of transparent substrate 8 6.5 Reflectivity 8 6.6 Limits for reflectivity variation in program area 8 7 Recording parameters 8 7.1 Rotation during playback 8 7.2 Track 8 7.3 Limits for deviations of information layer perpendicular to reference plane 8 7.4 Limits for radial
23、 deviations of the track 9 8 Environmental conditions for playing the compact disc 9 8.1 Playing the compact disc 9 8.2 Temperature and humidity requirements 9 9 High-frequency signal 10 9.1 Measurement conditions 10 9.2 Modulation amplitude 10 9.3 Signal asymmetry 10 latest date by which the ENhas
24、to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2001-11-01EN60908:1999 BSI 03-2000 3 Page 9.4 Cross-talk 10 9.5 Frequency modulation
25、of the channel bit frequency (see clause13) 10 10 Radial differential (RD) signal 10 10.1 Measurement conditions 10 10.2 Shape of the radial differential signal 10 10.3 Sensitivity to radial offset 11 10.4 Noise 11 11 Defects 11 11.1 Block error rate (BLER) 11 11.2 Local defects 11 12 General Record
26、ed parameters 11 13 Eight to14 modulation code (EFM-code) 12 14 Frame format 12 15 EFM-modulator 13 16 Error correction 13 16.1 General 13 16.2 Structure 13 16.3 CIRC encoder and decoder 14 17 Subcode/control and display system 14 17.1 General 14 17.2 Data format 14 17.3 Subcode structure 14 17.4 Ch
27、annel P 15 17.5 Channel Q 15 17.6 Channels R to W inclusive 19 18 General 19 19 General data organization 19 19.1 Basic format 19 19.2 PACK format 19 19.3 Error correction parity P 20 19.4 Interleaving 21 19.5 P-parity encoder and interleave sequence 21 19.6 P-parity decoder and de-interleave sequen
28、ce 21 19.7 Error-correction parity Q 21 19.8 Q-parity encoder 21 19.9 Q-parity decoder 21 20 ZERO mode (MODE=0, ITEM=0) 21 20.1 General 21 20.2 ZERO mode PACK format 22 21 LINE GRAPHICS mode (MODE=1, ITEM=0) 22 21.1 General 22 21.2 LINE-GRAPHICS mode PACK format 22 Page 21.3 LINE-GRAPHICS mode FONT
29、format 23 21.4 LINE-GRAPHICS mode SCREEN format 23 21.5 LINE-GRAPHICS mode colour table 24 21.6 LINE-GRAPHICS mode instructions 24 22 TV-GRAPHICS mode (MODE=1, ITEM=1) 25 22.1 General 25 22.2 TV-GRAPHICS mode PACK format 26 22.3 TV-GRAPHICS mode FONT format 26 22.4 TV-GRAPHICS mode SCREEN format 27
30、22.5 TV-GRAPHICS mode instructions 27 23 EXTENDED TV-GRAPHICS mode (MODE=1, ITEM=1 relative humidity: 45% to 75%; air pressure: 86kPa to106kPa. wavelength: 780 10nm; polarization: circular; numerical aperture (NA): 0,45 0,01; intensity at the rim of the pupil of theobjective lens: 50% of the maximum
31、 intensity value; diffraction limited performance of theoptical system: within the Marchal criterion, preferably equally divided between disc and player. Parameters to be specified Requirements Methods and/or conditions of measurement 5 Mechanical parameters Figure 2a, Figure 2b and Figure 2c, speci
32、fy the dimensions of the disc, including reflective layer, protective layer and label 5.1 Outer dimensions of disc 5.1.1 Outer diameter 120 0,3mm 80 0,2mm To be measured at23 2 C and(50 5)% relative humidity 5.1.2 Radial run-out of outer edge 0,4mmmax. Relative to the inscribed circle of centre hole
33、 5.1.3 Edge shape Edges shall be free from burrs; chamfer or radius is permitted on both sides 5.2 Centre hole dimensions For8cm-CD, see Figure 2c and Figure 2d. 5.2.1 Diameter 15mm To be measured at23 2 C and(50 5)% relative humidity 5.2.2 Shape Cylindrical 5.2.3 Edge shape Burrs are permitted on the label side, but not on the read-out side. Chamfer or radius is permitted (see Figure 2b, detailC) 5.3 Thickness of disc 1,2mm Including protective layer and labelling +0,1 0 +0,3 0,1
