1、INTERNATIONAL STANDARD ISO/IEC 13490-l First edition 1995-l 2-15 Information technology - Volume and file structure of read-only and write-once compact disk media for information interchange - Part 1: General Technologies de /information - Structure de volume et de fichier de supports disque compact
2、 4 lecture seule et B kriture unique pour lkhange dinformation - Partie I: GBn&alit& Reference number ISO/IEC 13490-I :I 995(E) ISOLIEC 13490-l: 1995 (E) OISO/IEC Contents 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Parts references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Conformance . . 3.1 Conformance of a medium . 1 3.2 Conformance of an information processing system . 1 4 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .l 5 Definitions . .2 5.1 application . .3 5.2 byte 3 5.3 CD-ROM 3 5.4 CD-W0 3 5.5 compact disk . 3 5.6 descriptor .3 5.7 file . 3 5.8 implementation .3 5.9 originating system .3 5.10 receivin
6、g system . .3 5.11 record . 3 5.12 sector 3 5.13 standard for recording . .3 5.14 user . .3 5.15 volume . 3 5.16 volume set . .3 6 Notation . .3 6.1 Numerical notation . .3 6.1.1 Decimal notation . .3 6.1.2 Hexadecimal notation .3 6.2 Bit fields 6.3 Descriptor formats . 6.4 Character strings . 6.5 A
7、rithmetic notation . 6.6 Schema . 6.7 Other notations . . 4 . 4 . 4 . 4 . 4 . 7 0 ISO/IEC 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any form or by any means, electronic or mechanical, including photocopying and microfilm, witho
8、ut per-mission in writing from the publisher ISO/IEC Copyright Office * Case Postale 56 * CH-1211 Genbve 20 * Switzerland Printed in Switzerland ii OISO/IEC ISO/IEC 13490-l: 1995 (E) 7 Basic types 6 7.1 Numerical values . 6 7.1.1 g-bit unsigned numerical values . .6 7.1.2 g-bit signed numerical valu
9、es . .6 7.1.3 16-bit unsigned numerical values . .6 7.1.4 16-bit signed numerical values . .6 7.1.5 32-bit unsigned numerical values . .6 7.1.6 32-bit signed numerical values . .6 7.1.7 64-bit unsigned numerical values . .6 7.2 Character sets and coding .7 7.2.1 Character set specification . .7 7.2.
10、2 CSO character set . 8 7.2.3 CSl character set . 8 7.2.4 CS2 character set . 8 7.2.5 CS3 character set . 8 7.2.6 CS4 character set . 8 7.2.7 CS5 character set . 8 7.2.8 CS6 character set . 8 7.2.9 CS7 character set . 8 7.2.10 CS8 character set . 9 7.2.11 List of character sets 9 7.2.12 Fixed-length
11、 character fields .9 7.3 Timestamp format 9 7.3.1 Timestamp . 9 7.3.2 Short timestamp . 11 7.4 Entity Identifier . 11 7.4.1 Flags (RBP 0). . 12 7.4.2 Identifier (RBP 1). . 12 7.4.3 Identifier Suffix (RBP 24) 12 iii ISO/IEC 13490-l: 1995(E) OISO/IEC Foreword IS0 (the International Organization for St
12、andardization) and IEC (the International Electrotechnical Commission) form the specialised system for worldwide standardisation. National bodies that are members of IS0 or IEC participate in the development of International Standards through technical committees established by the respective organi
13、sation to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other international organisations, governmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the field of information technolog
14、y, IS0 and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75% of the national bodies casting a
15、 vote. International Standard ISO/IEC 13490 was prepared by the European Association for Standardizing Information and Communication Systems, ECMA, (as ECMA-168) and was adopted, under a special “fast-track procedure” by joint technical committee ISO/IEC JTC 1, Information technology, in parallel wi
16、th its approval by national bodies of IS0 and IEC. ISO/IEC 13490 consists of the following parts, under the general title Information technology - Volume and file structure of read-only and write-once compact disk media for information interchange - Part 1: General - Part 2: Volume and File Structur
17、e IS O/IEC ISOAEC 13490-l: 1995 (E) Introduction ISO/IEC 13490 can be used for both CD-ROM and CD-W0 media for interchanging files. ISO/IEC 13490 is an enhancement of IS0 9660 for CD-ROM applications that has eliminated several restrictions and performance problems of IS0 9660. ISO/IEC 13346 and ISO
18、AEC 13490 follow the same volume and file structure framework. ISO/IEC 13490 has common definitions with ISO/IEC 13346 regarding volume and boot block recognition, file attributes, registration procedures and record structure. ISO/IEC 13490 is published in two parts. Part 1 - General - specifies ref
19、erences, definitions, notations and basic structures used in the other part. Part 2 - Volume and File Structure - specifies how to record various volume-related entities such as volumes and volume sets, and how to record and interpret files, both file data and file attributes, and file hierarchies w
20、ithin a volume set. INTERNATIONAL STANDARD ISOnEC ISO/IEC 13490-l: 1995 (E) Information technology - Volume and file structure of read-only and write-once compact disk media for information interchange - Part 1: General 1 Scope ISO/IEC 13490 specifies a format and associated system requirements for
21、volume and boot block recognition, volume structure, tile structure and record structure for the interchange of information between users of information processing systems usi.ng CD-W0 (a write-once compact disk medium), hybrid CD-W0 (a write-once compact disk with a read-only area) and CD-ROM disks
22、. NOTE 1 - CD-W0 is an evolution of CD-ROM technology which allows the recording of information on a write-once compact disk medium. The volume and boot block recognition is specified in ISO/IEC 13346-2. The record structure is specified in ISO/IEC 13346-5. NOTE 2 -A volume set may be recorded that
23、is in conformance with both IS0 9660 and ISO/IEC 13490. ISO/IEC 13490 is an enhancement of IS0 9660. ISO/IEC 13490 allows greater information interchange using CD-ROM. In addition, it supports incremental recording and updating of information stored on a CD-W0 disk. Under certain restrictions (see 2
24、/B.2.1), all of the tiles may be read by both a receiving system conforming to IS0 9660 and by a receiving system conforming to ISOllEC 13490. This part of ISO/IEC 13490 specifies references, definitions, notation and basic structures that apply to ISO/IEC 13490-2. 2 Parts references The first digit
25、 of a reference in ISO/IEC 13490 identifies the part. If the digit is preceded by “R”, the reference is to a part and clause of ISOLIEC 13346. For example, 2/5 refers to clause 5 in ISO/IEC 13490-2 and R2/5 refers to clause 5 in ISO/IEC 13346-2. If the reference is preceded by “figure”, the referenc
26、e is to a figure. For example, figure 2/5 refers to figure 5 in ISO/IEC 13490-2. If the reference is preceded by “table”, the reference is to a table. For example, table 2/5 refers to table 5 in ISO/IEC 13490-2. 3 Conformance 3.1 Conformance of a medium A medium shall be in conformance with ISO/IEC
27、13490 when it conforms to a standard for recording (see l/5.13) and ail information recorded on it conforms to the specifications of ISO/IEC 13490, ISO/IEC 13346-2 and ISO/IEC 13346-5, or to ISO/IEC 13490 and ISO/IEC 13346-2. A statement of conformance shall identify the parts of ISO/IEC 13346, and
28、the levels of medium interchange (see R2/10 and 2/16) to which the contents of the medium conform. 3.2 Conformance of an information processing system An information processing system shall be in conformance with ISO/IEC 13490 if it meets the requirements specified in ISO/IEC 13490, ISO/IEC 13346-2
29、and ISO/IEC 13346-5, or in ISO/IEC 13490 and ISO/IEC 13346-2 either for an originating system (see R2/12, 2/18 and R5/11) or for a receiving system (see R2/13, 2119 and R5/12) or for both types of system. A statement of conformance shall identify the parts of ISO/IEC 13346 and the levels of the requ
30、irements for the parts of ISO/IEC 13346 and ISOiIEC 13490 which can be met by the system. 4 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO/IEC 13490. At the time of publication, the editions indicated w
31、ere valid. All standards are subject to revision, and parties to agreements based on this part of ISO/IEC 13490 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid Internatio
32、nal Standards. 1 ISO/IEC 13490-l: 1995(E) OISO/IEC ISO/IEC 646: 199 1, Information technology - IS0 7-bit coded character set for information interchange. ISO/IEC 2022: 1994, Information technology - Character code structure and extension techniques. ISO/IEC 6429: 1992, Information technology - Cont
33、rol functions for coded character sets. IS0 8859-l: 1987, Information processing - 8-bit single-byte coded graphic character sets - Part I: Latin alphabet No. I. IS0 9660: 1988, Information processing - Volume and file structure of CD-ROM for information interchange. ISOAEC 9945-1:1990, Information
34、technology - Portable Operating System Interface (POSIX) - Part 1: System Application Program Interface (API) C Language. ISOIIEC 10149: 1995, Information technology - Data interchange on read-only 120 mm optical data disks (CD-ROM). ISOIIEC 10646-l : 1993, Information technology - Universal Multipl
35、e-Octet Coded Character Set (UCS) - Part 1. Architecture and Basic Multilingual Plane. ISOIIEC 13346-211995, Information technology - Volume and file structure of write-once and rewritable media using non-sequential recording for information interchange - Part 2: Volume and boot block recognition. I
36、SOIIEC 13346-511995, Information technology - Volume and file structure of write-once and rewritable media using non-sequential recording for information interchange -Part 5: Record structure. ISOIIEC 13490-2:1995, Information technology - Volume andfile structure of read-only and write-once compact
37、 disk media for information interchange - Part 2: Volume and file structure. ISOiIEC 13800”, Information technology - Procedure for the registration of identifiers and attributes for volume and file structure. IEC 908: 1987, Compact disc digital audio system. 5 Definitions For the purposes of ISO/IE
38、C 13490, the following definitions apply, ) To be published 2 OISO/IEC ISO/IEC 13490-l: 1995 (E) 5.1 application: A program that processes the contents of a file, and may also process selected attribute data relating to the file or to the volume(s) on which the file is recorded. 5.2 byte: A string o
39、f eight binary digits operated upon as a unit. If the standard for recording (see l/5.13) specifies that the container for the recording of a byte has more than eight bits, a byte shall be recorded in the least significant eight bits of the container with the remaining bits of the container set to Z
40、ERO. 5.3 CD-ROM: A read-only compact disk (see 115.5). 5.4 CD-WO: A write-once compact disk (see l/5.5) that conforms to a standard for recording (see l/5.13). 5.5 compact disk: An optical disk that is recorded according to IEC 908 and ISO/IEC 10149. 5.6 descriptor: A structure containing descriptiv
41、e information about a volume or a file. 5.7 file: A collection of information. 5.8 implementation: A set of processes which enable an information processing system to behave as an originating system, or as a receiving system, or as both types of system. 5.9 originating system: An information process
42、ing system which can create a set of files on a volume set for the purpose of data interchange with another system. 5.10 receiving system: An information processing system which can read a set of files from a volume set which has been created by another system for the purpose of data interchange. 5.
43、11 record: A sequence of bytes treated as a unit of information. 5.12 sector: The data field of an addressable part of the medium that can be accessed independently of other addressable parts of the medium as specified in the standard for recording (see l/5.13). 5.13 standard for recording: A standa
44、rd that specifies the recording method and the addressing method for the information recorded on a medium. Annex A of ISO/IEC 13490-2 specifies the restrictions on a standard for recording that are relevant for ISO/IEC 13490. The standard for recording used in conjunction with ISOLIEC 13490 is subje
45、ct to agreement between the originator and recipient of the medium. 5.14 user: A person or other entity (for example, an application) that causes the invocation of the services provided by an implementation. 5.15 volume: A sector address space as specified in the standard for recording (see l/5.13).
46、 NOTE 3 - A medium usually has a single set of sector addresses, and is therefore a single volume. A medium may have a separate set of addresses for each side of the medium, and is therefore two volumes. 5.16 volume set: A collection of one or more volumes with identical volume set identification. 6
47、 Notation The following notation is used in ISO/IEC 13490. 6.1 Numerical notation 6.1.1 Decimal notation Numbers in decimal notation are represented by decimal digits. 6.1.2 Hexadecimal notation Numbers in hexadecimal notation are represented as a sequence of one or more hexadecimal digits prefixed
48、by W: hexadecimal digit 0123456789ABCDEF decimal value 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 3 ISO/IEX 13490-l: 1995 (E) OISO/IEC 6.2 Bit fields Certain fields containing an integral value, or parts of fields containing an integral value, are intended to be interpreted as an array of bits. This arra
49、y of bits shall be referred to as a bit field. Bit positions within an n bit field are numbered such that the least significant bit is numbered 0 and the most significant bit is numbered n-l. 6.3 Descriptor formats Descriptor formats shall be specified by a table specifying the location, length, name and contents of each field. The interpretation of each field shall be given in the prose associated with the table. Table 1 - Example descriptor format Byte position Length in bytes Name Contents 0 4 Data Length (=D-L) Uint32 (l/7.1.5) 4 32 Application Identifier regid (l/7.4) 36 4 Reser
