1、INTERNATIONAL STANDARD ISO/IEC 10149 Second edition 1995-07-I 5 Information technology - Data interchange on read-only 120 mm optical data disks (CD-ROM) Technologies de /information - ichange de donnkes sur des disques optiques de diamktre 120 mm B lecture unique (CD-ROM) Reference number ISO/IEC 1
2、0149:1995(E) Processed and adopted by ASC NCITS and approved by ANSI as an American National Standard.Date of ANSI Approval: 1/11/99Published by American National Standards Institute,11 West 42nd Street, New York, New York 10036Copyright 1999 by Information Technology Industry Council (ITI).All righ
3、ts reserved.These materials are subject to copyright claims of International Standardization Organization (ISO),International Electrotechnical Commission (IEC), American National Standards Institute (ANSI), andInformation Technology Industry Council (ITI). Not for resale. No part of this publication
4、 may be reproducedin any form, including an electronic retrieval system, without the prior written permission of ITI. All requestspertaining to this standard should be submitted to ITI, 1250 Eye Street NW, Washington, DC 20005.Printed in the United States of AmericaAdopted by INCITS (InterNational C
5、ommittee for Information Technology Standards) as an American National Standard.Date of ANSI Approval: 1/11/99Published by American National Standards Institute,25 West 43rd Street, New York, New York 10036Copyright 2002 by Information Technology Industry Council (ITI).All rights reserved.These mate
6、rials are subject to copyright claims of International Standardization Organization (ISO), InternationalElectrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council(ITI). Not for resale. No part of this publication may be reproduced in
7、any form, including an electronic retrieval system, withoutthe prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaISO/IEC 10149:1995(E) Contents Page 1 Scope 2 Conformanc
8、e 3 Normative references 4 Definitions 4.1 Audio Track 4.2 concentricity 4.3 Control byte 4.4 Digital Data Track 4.5 F1-Frame 4.6 F,-Frame 4.7 F,-Frame 4.8 Information Area 4.9 Information Track 4.10 Physical Track 4.11 radial acceleration 4.12 radial runout 4.13 Section 4.14 Sector 4.15 User Data A
9、rea 5 Environments 5.1 Testing environments 5.1.1 Optical stylus 5.1.2 Clamping 5.13 Normal testing environment 5.1.4 Restricted testing environment 5.2 5.3 Operating environment Storage environment 6 Inflammability 0 ISO/IEC 1995 All rights reserved. Unless otherwise specified, no part of this publ
10、ication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office l Case postale 56 l CH-1211 Genbve 20 l Switzerland Printed in Switzerland 1 1 1 1 1 1 1 1 1 2
11、 2 2 2 2 2 2 2 2 2 3 ii o ISO/XEC ISO/IEC 10149:1995(E) 7 Material 8 Mechanical, physical and dimensional characteristics 8.1 Reference planes 8.2 Centre hole 8.3 First transition area 8.4 Clamping area 8.5 Second transition area 8.6 Information Area 8.7 Rim area 8.8 General remarks 9 Mechanical def
12、lection of the entrance surface 10 Deflection of the reflective layer 11 Physical Track geometry 11.1 Physical Track shape 11.2 Direction of rotation 11.3 Physical Track pitch 11.4 Scanning velocity 11.5 Radial runout of tracks 8 12 Optical read system 8 12.1 HF signal 12.2 Modulation amplitude 12.3
13、 Symmetry 12.4 Cross talk 12.5 Quality of the HF signal 12.5.1 Position jitter of the Channel bits 12.5.2 Specification of random errors 12.5.3 Specification of burst errors 12.6 Radial track-following signal 9 9 10 12.6.1 Magnitude 12.6.2 Defects 15 13 General aspects of recording 15 15 13.1 Inform
14、ation Tracks 13.2 Bit coding 15 14 Sectors of a Digital Data Track 16 16 17 17 17 17 14.1 Sync field 14.2 Header field 14.3 EDC field 14.4 Intermediate field 14.5 P-Parity field 14.6 Q-Parity field 17 15 Scrambling . . . 111 ISO/IEC 10149:1995(E) o ISODEC 16 F, -Frames 17 18 19 19.1 19.2 19.3 19.4 C
15、IRC encoding - Fz-Frames Control Bytes - F3-Frames and Sections Recording of the F3-Frames on the disk g-to- 14 Encoding Sync Header Merging Channel bits Channel Frame 20 Track structure of the Information Area 20.1 Lead-in Area 20.2 User Data Area 20.3 Lead-out Area 21 Addressing system in the Info
16、rmation Area 22 Specification of the Control bytes of Digital Data Tracks 22.1 Setting of r-channel to w-channel 22.2 Setting of the p-channel 223 Setting of the q-channel 22.3.1 Control field 22.3.2 q-Mode field 22.3.3 q-Mode 1 - q-Data Field in the User Data Area and in the Lead-out Area 223.4 q-M
17、ode 1 - q-Data field in the Lead-in Area 223.5 q-Mode 2 - q-Data field in the Information Area 22.3.6 CRC field Annexes A - Error correction encoding by RSPC B - Scrambler C - Error correction encoding by CIRC D - S-bit to 14-Channel bit conversion E - Merging bits F - Storage tests 17 17 18 18 18 1
18、8 18 18 19 19 19 19 19 20 20 21 21 21 21 22 23 24 24 25 29 30 36 38 39 iv o ISO/IEC ISO/IEC 10149:1995(E) Foreword IS0 (the International Organization for Standardization) and IEC (the Inter- national Electrotechnical Commission) form the specialized system for worldwide standardization. National bo
19、dies that are members of IS0 or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other
20、 international organizations, governmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the field of information technology, IS0 and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical comm
21、ittee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. International Standard ISO/IEC 10149 was prepared by the European Association for Standardizing Information and Communication Systems
22、 (as ECMA-130) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 23, Optical disk cartridges for information interchange, in parallel with its approval by national bodies of IS0 and IEC. This second edition ca
23、ncels and replaces the first edition (ISOAEC 10149:1989), which has been technically revised. Annexes A to E form an integral part of this International Standard. Annex F is for information only. V INTERNATIONAL STANDARD IXYIIX ISO/IEC 10149:1995 (E) Information technology disks (CD-ROM) - Data inte
24、rchange on read-only 120 mm optical data 1 Scope This International Standard specifies the characteristics of 120 mm optical disks for information interchange between information processing systems and for information storage, called CD-ROM. The optical disk specified by this International Standard
25、is of the type in which the information is recorded before delivery to the user and can only be read from the disk. This International Standard specifies - some definitions, the environments in which the characteristics of the disk shall be tested and the environments in which it shall be used and s
26、tored, - the mechanical, physical and dimensional characteristics of the disk, - the recording characteristics, the format of the tracks, the error-detecting and the error-correcting characters, and the coding of the information, - the optical characteristics for reading the information. These chara
27、cteristics are specified for tracks recorded with digital data. According to this International Standard, a disk may also contain one or more tracks recorded with digital audio data. Such tracks shall be recorded according to IRC 908. 2 conformance An optical disk is in conformance with this Interna
28、tional Standard if it conforms to all its mandatory requirements. 3 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standard
29、s are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 9660:
30、1988, Inform cross-over points of the lead network: 65 Hz and 650 Hz; see figure 5). The rms value of the noise in the residual error signal shall correspond to a tracking error of less than 0,03 /XII, integration time 20 ms. In addition, to avoid strong single frequency noise contributions, this rm
31、s value shah be less than 0,Ol p when measured with a scanning filter with a width of 100 Hz over a range from 500 Hz to 10 kHz. 12 Optical read system For testing the requirements of 12.1 to 12.6 the information in the reflective layer shall be read by the optical beam from an optical stylus accord
32、ing to 5.1.1 and focused on this layer through the transparent substrate. During reading the scanning light spot is diffracted by the pits of the reflective information layer. The optical power that is diffracted back into the objective lens of the optical system is modulated according to the encode
33、d digital information. The modulated photo current is called the high frequency (HF) signal. 12.1 HF signal The HF signal is measured before ac. coupling (see figure 6). The highest and lowest fundamental frequencies that occur are 720 kHz and 196 kHz. The peak-to-peak values of the detector current
34、 of the highest and lowest fundamental frequencies are denoted by IS and I, r respectively. The top level of HF signal, which is given by the lowest fundamental frequency, is denoted by :.:.:.,.: .:, . . .:. .:,:. :,:.:.:.:.: . ( . . . .:4:I:i:I:i:I:I,I:I:I: :.:.: :;: c t % x d 11 ISOAEC 10149:1995
35、Q Figure 2 - Cross-section of a detail of the centre hole LABEL PROTECTIVE LAYER REFLECT Iv E I LAYER TRANSPARENT SUBSTR4TE Figure 3 - Enlarged cross-section of the information area Figure 4 - Cross-section of a detail of the rim of the disk 12 01s0/JJ3c 1s0AEc 10149:1995 Q - 20% - the User Data Are
36、a; - the Lead-out Area. The Lead-in Area shall contain only one Information Track called Lead-in Track. The Lead-out Area contains only one Information Track called Lead-out Track. The user data shall be recorded in the Information Tracks in the User Data Area. All Information Tracks containing digi
37、tal dam shall be structured in Sectors. For the purpose of linking Information Tracks in the Information Area, these tracks may have: a) Pause : b) Pre-gap : A part of an Information Track on which only control information but no user data is recorded. A first part of a Digital Dam Track not contain
38、ing user data and encoded as a Pause. It is divided into two intervals: - first interval: at least 75 Sections (at least 1 s) coded as the preceding track, i.e. the Control field (see 22.3.1) of the q-channel (see 22.3) and, in case of a preceding Digital Data Track, the setting of the Sector Mode b
39、yte are identical with those of the previous Information Track; - second interval: at least 150 Sections (at least 2 s) in which the Control field of the q-channel and the setting of the Sector Mode byte are identical with those of the part of the track where user data is recorded. In this interval
40、of the Pre-gap the data is structured in Sectors. c) Post-gap : A last part of a Digital Data Track, not containing user data, and structured in Sectors. It has the length of at least 150 Sections (at least 2 s). The setting of the Control field of the q-channel and the setting of the Sector Mode by
41、te are identical with those of the part of the track where the user data is recorded. 20.1 Lead-in Area The Lead-in Track is either a Digital Data Track or an Audio Track. If it is a Digital Data Track, it shall be structured in Sectors and end with a Post-gap. If it is an Audio Track, it shall be a
42、ccording to lEC 908. 20.2 User Data Area The Information Tracks in the User Data Area shall be either Digital Data Tracks only or Digital Data Tracks and Audio Tracks. The following rules apply to the tracks in the User Data Area: - If the first Information Track is a Digital Data Track, it shall st
43、art with a Pause of 150 Sections (2 s) and shall be coded as the second interval of a Pm-gap. - A Digital Data Track, not being the first track in the User Dam Area, shall begin with a Pre-gap if the preceding track is a Digital Data Track with a different Sector mode or if it is an Audio Track. - A
44、 Digital Data Track shall end with a Post-gap if the following track is an Audio Track. This rule applies also to the last Digital Data Track in the User Data Area, which is followed by the Lead-out Track. 20.3 Lead-out Area The Lead-out Track is either a Digital Data Track or an Audio Track. If it
45、is a Digital Data Track, it shall be structured in Sectors, without Pre-gap. If the Lead-out Track is an Audio Track, it shall be according to IEC 908. 21 Addressing system in the Information Area The address of a Section of an Information Track on the disk is given as the elapsed time from the star
46、t of the User Data Area to that Section. This time is recorded in the Control bytes of each Section, and is called absolute time. It is given with a 19 1s0/-lEc 10149:1995 Q 01s0/IEc resolution of l/75 of a second. The time is given for a data rate from the disk of 4,321 8 x lo6 Channel bits per sec
47、ond. This amounts to exactly 75 Sections per second. The address of a Sector is recorded in the Sector Header, also as an absolute time. It has no prescribed relation to the addresses of the Sections, because the mapping of a Sector on the Sections during recording is implementation-dependent due to
48、 the freedom left in clause 16. Therefore, the address of a Sector is filled in just before the Sector enters the CIRC encoder. The nominal value of the absolute time in the Header of a Sector shall be equal to the absolute time recorded in the Control bytes of that Section which is being processed
49、by the 8-to-14 encoder at the instant that the Sync of the Sector enters the CIRC encoder. This prescription assumes that the CIRC encoder is the only delaying element in the recording electronics. The tolerance on the nominal time in the address of the Header of a Sector shall be f 1 s. This tolerance is large compared with the recording time of a Section (l/75 s) and of a Sector, in order to accommodate the freedom this International Standard leaves for the implementation. Each Sector has a unique address. The address of the first Sector with User Data of an Informati
