1、BRITISH STANDARD BS ISO/IEC 11694-4:2008 Identification cards Optical memory cards Linear recording method Part 4: Logical data structures ICS 35.240.15 BS ISO/IEC 11694-4:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2008 B
2、SI 2008 ISBN 978 0 580 58564 7 National foreword This British Standard is the UK implementation of ISO/IEC 11694-4:2008. It supersedes BS ISO/IEC 11694-4:2001 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee IST/17, Cards and personal identification. A
3、 list of organizations represented on this committee can be obtained on request to its secretary. 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 cannot confer immunity from
4、 legal obligations. Amendments/corrigenda issued since publication Date Comments Reference number ISO/IEC 11694-4:2008(E)INTERNATIONAL STANDARD ISO/IEC 11694-4 Third edition 2008-07-01 Identification cards Optical memory cards Linear recording method Part 4: Logical data structures BS ISO/IEC 11694-
5、4:2008ii iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Format structure . 3 5 Track layout. 3 5.1 Track layout examples . 4 6 Track guides 5 7 Guard tracks 5 8 Format description tracks 5 8.1 Content 6 9 Test tracks . 7 9.1 Content -
6、 Test track 1 (top and bottom) . 7 9.2 Content - Test track 2 (top and bottom) . 7 9.3 Content - Test track 3 (top and bottom) . 7 9.4 Content - Test track 4 (top and bottom) . 7 10 Application description tracks 7 11 Data tracks. 7 12 Data bits. 8 13 Reference points. 8 13.1 First data bit 8 14 Tra
7、ck components 8 14.1 Track ID 8 14.2 Preformatted track header . 8 14.3 Sectors. 9 14.4 Track structure 10 15 Measurement. 11 15.1 Preformatted data measurement. 11 15.2 Preformatted data characteristics. 11 15.3 Written data characteristics. 11 16 Data encoding . 12 16.1 Error detection and correct
8、ion 12 BS ISO/IEC 11694-4:2008iv Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of Inter
9、national Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison
10、 with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technic
11、al committee is to prepare International Standards. 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 vote. Attention is dra
12、wn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 11694-4 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee
13、 SC 17, Cards and personal identification. This third edition cancels and replaces the second edition (ISO/IEC 11694-4:2001), which has been technically revised. ISO/IEC 11694 consists of the following parts, under the general title Identification cards Optical memory cards Linear recording method:
14、Part 1: Physical characteristics Part 2: Dimensions and location of the accessible optical area Part 3: Optical properties and characteristics Part 4: Logical data structures Part 5: Data format for information interchange for applications using ISO/IEC 11694-4, Annex B Part 6: Use of biometrics on
15、an optical memory card BS ISO/IEC 11694-4:2008v Introduction ISO/IEC 11694 defines the parameters for optical memory cards and the use of such cards for the storage and interchange of digital data. ISO/IEC 11694 recognizes the existence of different methods for recording and reading information on o
16、ptical memory cards, the characteristics of which are specific to the recording method employed. In general, these different recording methods will not be compatible with each other. Therefore, ISO/IEC 11694 is structured to accommodate the inclusion of existing and future recording methods in a con
17、sistent manner. This part of ISO/IEC 11694 is specific to optical memory cards using the linear recording method. Characteristics which apply to other specific recording methods are defined in separate standards documents. This part of ISO/IEC 11694 defines the logical data structures and the extent
18、 of compliance with, addition to, and/or deviation from the relevant base document ISO/IEC 11693. BS ISO/IEC 11694-4:2008blank1 Identification cards Optical memory cards Linear recording method Part 4: Logical data structures 1 Scope This part of ISO/IEC 11694 defines the logical data structures for
19、 optical memory cards necessary to allow compatibility and interchange between systems using the linear recording method. 2 Normative references The following referenced documents are indispensible for the application of this document. For dated references, only the edition cited applies. For undate
20、d references, the latest edition of the referenced document (including any amendments) applies ISO/IEC 11693, Identification cards Optical memory cards General characteristics ISO/IEC 11694-1, Identification cards Optical memory cards Linear recording method Part 1: Physical characteristics ISO/IEC
21、11694-2, Identification cards Optical memory cards Linear recording method Part 2: Dimensions and location of the accessible optical area ISO/IEC 11694-3, Identification cards Optical memory cards Linear recording method Part 3: Optical properties and characteristics ISO/IEC 10373-5, Identification
22、cards Test methods Part 5: Optical memory cards 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 11693, ISO/IEC 11694-1, ISO/IEC 11694-2, ISO/IEC 11694-3 and the following apply. 3.1 data bit area which represents data on an optical memory card NO
23、TE It is usually a mark which has a different reflectivity and/or phase difference from the background reflectivity. 3.2 data track area located between adjacent track guides where data are written and/or read BS ISO/IEC 11694-4:20082 3.3 error correction code ECC code designed to correct certain ki
24、nds of errors in data 3.4 error detection and correction EDAC family of methods in which redundancy is added to a message block, at the time the message block is recorded, in known fashion, and in which, upon read back, a decoder removes the redundancy and uses the redundant information to detect an
25、d correct erroneous channel symbols 3.5 modulation code system for coding which transforms information bits into some physical representation for recording onto the optical memory card 3.6 data pitch distance between corresponding points on adjacent data spots 3.7 sector minimum unit of data that ca
26、n be accessed on a card for any read and/or write command 3.8 address character or group of characters that identifies a register, a particular part of storage, or some other data source or destination 3.9 BEST code Burst and random-Error correction-System for-Teletext code 272,190 majority-logic de
27、codable cyclic error detection and correction code 3.10 code word fixed length sequence of bits resulting from encoding a message block using some error detection and correction method 3.11 data area portion of the accessible optical area that can be written and/or read under the control of the appl
28、ication software 3.12 error detection code EDC set of code words in which elements conform to specific rules NOTE If errors occur, the resulting presentation will not conform to the rules, indicating that errors are present. 3.13 error message message returned by a card drive unit to indicate that t
29、he card inserted in the drive cannot be processed BS ISO/IEC 11694-4:20083 3.14 information totality of data present on the card including service, system and user data for interchange independent of the method of recording NOTE Information can be replicated or written by means of an optical beam. 3
30、.15 interleaving process of distributing the physical location of code words to render the data more immune to clustered bit errors 3.16 message block fixed length sequence of data bits which is encoded using error detection and correction methods to form a code word 3.17 MFM-RZ modified-frequency-m
31、odulation-return-to-zero modification of MFM encoding with a return to zero so that a flux reversal is used to indicate a 1 bit and the lack of a flux reversal is used to indicate a 0 bit NOTE Also referred to as 1,3 RLL. 3.18 NRZI-RZ non-return-to-zero-inverted, return to zero encoding similar to M
32、FM-RZ (3.17) except that a transition does not occur between adjacent zeros 3.19 sector code word sector data block encoded using an error detection and correction code 3.20 sector data block block of data containing user data and system information 4 Format structure This section details informatio
33、n which makes up the accessible optical area and is placed on cards during manufacture and/or at the time of card initialization. Area Subsets Accessible optical area Guard tracks and data area. Data area Format description tracks, test tracks, application description tracks and application area. Ap
34、plication area Application data and user data. 5 Track layout Track layout information shall be preformatted on cards during manufacture and/or written to cards prior to use. Tracks shall be arranged in reverse order beginning with the reference track, the last bottom guard track located nearest the
35、 reference edge. BS ISO/IEC 11694-4:20084 The track layout is outlined below. Because the total number of tracks can vary, the numbers of all tracks located between the last user data track and the reference track are given in parametric form where n is the nominal number of tracks and n+9 is the nu
36、mber of the last bottom guard track, the reference track. Track Description Track # Hex Guard track (last bottom) n+9 : : Guard track (first bottom) n Format description track n-1 aTest track 1 (bottom) n-2a: : Test track 4 (bottom) n-5aApplication description track n-6a,bLast user data track n-7a,b
37、: : First user data track 6a,b0006 Application description track 5a,b0005 Test track 4 (top) 4a0004 : : : Test track 1 (top) 1a0001 Format description track 0a0000 Guard track (last top) -1 3FFF : : : Guard track (first top) -10 3FF6 aData area bApplication area 5.1 Track layout examples This sectio
38、n provides information concerning data structures that support the optional card layouts described in ISO/IEC 11694-2. 5.1.1 Cards with moderate data capacity NOTE These layouts support the inclusion of a magnetic stripe and/or signature panel. 5.1.1.1 Normal density mode Nominal number of tracks 25
39、83. This layout shall contain 2603 tracks, of which 2571 shall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 2592, the reference track. 5.1.1.2 High density mode Nominal number of tracks 4144. This layout shall contain 4164 tracks, of which 4132 s
40、hall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 4153, the reference track. 5.1.2 Cards with small data capacity NOTE These layout options support the inclusion of a magnetic stripe, IC chip with contacts, embossing and/or signature panel. BS IS
41、O/IEC 11694-4:20085 5.1.2.1 Normal density mode Nominal number of tracks 1000. This layout shall contain 1020 tracks, of which 988 shall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 1009, the reference track. 5.1.2.2 High density mode Nominal num
42、ber of tracks 1612. This layout shall contain 1632 tracks, of which 1600 shall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 1621, the reference track. 5.1.3 Cards with maximum data capacity NOTE These layouts support the inclusion of a magnetic s
43、tripe and/or signature panel. 5.1.3.1 Normal density mode Nominal number of tracks 3425. This layout shall contain 3445 tracks, of which 3413 shall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 3434, the reference track. 5.1.3.2 High density mode
44、Nominal number of tracks 5492. This layout shall contain 5512 tracks, of which 5480 shall be user data tracks. Tracks shall be numbered sequentially, in reverse order, beginning with track 5501, the reference track. The total number of tracks may vary dependent on the application requirements; howev
45、er, in all cases, tracks shall be arranged in order, and numbered sequentially, beginning with the reference track. 6 Track guides Track guides shall be uniformly spaced across the card and shall extend the length of the accessible optical area. The accumulated tolerances across the width of all tra
46、ck guides shall be less than or equal to 0,01 % at 25 C. The width of the track guides shall be 2,2 m 0,5 m. The distance from the centre of one track guide to the centre of an adjacent track guide shall be 12,0 m 0,1 m in the normal density mode and 7,5 m 0,1 m in the high density mode. A maximum o
47、f ten track guides can have breaks exceeding 100 m; no breaks shall exceed 500 m. 7 Guard tracks There shall be 20 guard tracks, ten located directly above and ten directly below the user data area to enable the optics to locate the user data tracks and prevent the optical head from over running the
48、 accessible optical area if auto-tracking is lost. Guard tracks -1 to -10 and n to n+9 shall contain a copy of the card manufacturing information from sector 0 of the format description track formatted using sector type 13. The excess bytes shall be filled with zeros. 8 Format description tracks The
49、re shall be two format description tracks, one located at the top and the other at the bottom of the data area, that shall be preformatted with information that permits the card drive to automatically switch between formats and allows later generations of card formats to be introduced alongside earlier generations. To BS ISO/IEC 11694-4:20086 achieve this upward compatibility, the format description track must
