ISO/IEC 11694-4:2008
(Main)Identification cards — Optical memory cards — Linear recording method — Part 4: Logical data structures
Identification cards — Optical memory cards — Linear recording method — Part 4: Logical data structures
ISO/IEC 11694-4:2008 defines the logical data structures for optical memory cards necessary to allow compatibility and interchange between systems using the linear recording method.
Cartes d'identification — Cartes à mémoire optique — Méthode d'enregistrement linéaire — Partie 4: Structures de données logiques
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INTERNATIONAL ISO/IEC
STANDARD 11694-4
Third edition
2008-07-01
Identification cards — Optical memory
cards — Linear recording method —
Part 4:
Logical data structures
Cartes d'identification — Cartes à mémoire optique — Méthode
d'enregistrement linéaire —
Partie 4: Structures de données logiques
Reference number
©
ISO/IEC 2008
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ii © ISO/IEC 2008 – All rights reserved
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 - 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 Track 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 correction . 12
© ISO/IEC 2008 – All rights reserved iii
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 International 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 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 technical 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 drawn 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 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:
⎯ 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 an optical memory card
iv © ISO/IEC 2008 – All rights reserved
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 optical
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 consistent 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 of compliance with, addition to,
and/or deviation from the relevant base document ISO/IEC 11693.
© ISO/IEC 2008 – All rights reserved v
INTERNATIONAL STANDARD ISO/IEC 11694-4:2008(E)
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 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 undated 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 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 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
NOTE 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
© ISO/IEC 2008 – All rights reserved 1
3.3
error correction code
ECC
code designed to correct certain kinds 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 and 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 can 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 decodable 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 application
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 the card inserted in the drive cannot be processed
2 © ISO/IEC 2008 – All rights reserved
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.
3.15
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-modulation-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
...
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