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1、BRITISH STANDARD BS ISO/IEC 15457-2:2001 Identification cards Thin flexible cards Part 2: Magnetic recording techniques ICS 35.240.15 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Co
2、py, (c) BSI BS ISO/IEC 15457-2:2001 This British Standard, having been prepared under the direction of the DISC Board, was published under the authority of the Standards Policy and Strategy Committee on 19 November 2001 BSI 19 November 2001 ISBN 0 580 38679 1 National foreword This British Standard
3、reproduces verbatim ISO/IEC 15457-2:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee IST/17, Cards and Personal Identification, which has the responsibility to: A list of organizations represented on this committee can b
4、e obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “F
5、ind” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from leg
6、al obligations. aid enquirers to understand the text; present to the responsible international/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. S
7、ummary of pages This document comprises a front cover, an inside front cover, the ISO/IEC title page, pages ii to iv, pages 1 to 18, an inside back cover and a back cover The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publicatio
8、n Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO/IEC 15457-2:2001(E) INTERNATIONAL STANDARD ISO/IEC 15457-2 First edition 2001-11-01 Identification cards Thin flexible cards Part 2: Magnetic record
9、ing techniques Cartes didentification Cartes flexibles fines Partie 2: Techniques denregistrement magntique Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) ii Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:
10、53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) iii ContentsPage 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 General characteristics.4 4.1 Introduction.4 4.2 Requirements common to all formats4 4.3 Environmental conditions5 5 Magnetic stripe characteristics
11、5 5.1 Stripe surface5 5.2 Stripe adherence.6 5.3 Stripe life .7 5.4 Magnetic characteristics7 5.5 Magnetic stripe zone reservation7 6 TFC.0 data recording.8 6.1 Magnetic track characteristics8 6.2 Encoding characteristics.8 7 TFC.1 data recording.9 7.1 Magnetic track characteristics9 7.2 TFC.1-speci
12、fic stripe requirements 10 7.3 Encoding characteristics.11 8 TFC.5 data recording.12 8.1 Magnetic track characteristics12 8.2 TFC.5-specific stripe requirements 12 8.3 Encoding characteristics.12 Annex A (normative) Magnetics classes .14 A.1 Signal amplitude requirements 14 A.1.1 New, unused unencod
13、ed cards.14 A.1.2 Unused, encoded cards15 A.1.3 Returned cards15 A.2 Static magnetic characteristics15 Annex B (normative) Encoding classes 16 B.1 Encoding methods.16 B.1.1 F/2F.16 B.1.2 Split phase.16 B.2 Encoding bit densities.17 B.2.2 Transition angle 17 B.2.3 Flux transition spacing.17 Licensed
14、Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) iv Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardiza
15、tion. 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 mutua
16、l interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. In the field of information technology, ISO and IEC hav
17、e 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 vote. Attention
18、is drawn to the possibility that some of the elements of this part of ISO/IEC 15457 may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. International Standard ISO/IEC 15457-2 was prepared by Joint Technical Committee ISO/IEC J
19、TC 1, Information technology, Subcommittee SC 17, Identification cards and related devices. ISO/IEC 15457 consists of the following parts, under the general title Identification cards Thin flexible cards: Part 1: Physical characteristics Part 2: Magnetic recording techniques Part 3: Test methods Ann
20、exes A and B form a normative part of this part of ISO/IEC 15457. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARDISO/IEC 15457-2:2001(E) 1 Identification cards Thin flexible cards Part 2: Magnetic recording techniques
21、1 Scope Thin flexible cards, the subject of this International Standard, are used to automate the controls for access to goods or services such as mass transit, highway toll systems, car parks, vouchers, stored value, etc. For these applications, data can be written and/or read by machines using var
22、ious recording techniques such as magnetic stripe, optical character recognition (OCR), bar code, etc. This part of ISO/IEC 15457 specifies the magnetic stripe and encoding characteristics of thin flexible cards at two points in the card life cycle: 1.at the point of loading into the card issuing eq
23、uipment; 2.at the point of issue to the public. Guidance concerning the storage and usage of finished cards (including magnetic stripe cards) under various environmental conditions is given in ISO/IEC 15457-1. 2 Normative references The following normative documents contain provisions which, through
24、 reference in this text, constitute provisions of this part of ISO/IEC 15457. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO/IEC 15457 are encouraged to investigate the possibility of a
25、pplying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 4287-1, Surface roughness Terminology Part
26、1: Surface and its parameters ISO 4287-2, Surface roughness Terminology Part 2: Measurement of surface roughness parameters ISO/IEC 7811-2, Identification cards Recording technique Part 2: Magnetic stripe Low coercivity ISO/IEC 7811-6, Identification cards Recording technique Part 6: Magnetic stripe
27、 High coercivity ISO/IEC 15457-1, Identification cards Thin flexible cards Part 1: Physical characteristics ISO/IEC 15457-3, Identification cards Thin flexible cards Part 3: Test methods IEC 60050-221, International Electrotechnical Vocabulary Chapter 221: Magnetic materials and components 3 Terms a
28、nd definitions For the purposes of this part of ISO/IEC 15457, the terms and definitions given in ISO/IEC 15457-1 and the following apply. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) 2 3.1 track area of stripe sur
29、face occupied by the data encoded by a single channel of the magnetic recording write/read interface 3.2 central stripe stripe centred on the widthwise axis of the card 3.3 lateral stripe any widthwise stripe which is not centred on the widthwise axis of the card 3.4 re-usable card durable card able
30、 to be recovered from the field (generally by automatic equipment operation) and re-issued 3.5 unused, unencoded card card possessing all the components required for its intended purpose that has not been subjected to any personalization or testing operation and that has been stored in a clean envir
31、onment with no more than 48 hour exposure to daylight at temperatures between 5 C and 30 C and humidity between 10 % and 90 % without experiencing thermal shock 3.6 unused encoded card card according to 3.11 that has only been encoded with all the data required for its intended purpose (e.g. magneti
32、c encoding, printing etc.)1 3.7 returned card card according to 3.12 after it has been issued to the card holder and returned for the purpose of testing (e.g. re- usable card returned for possible re-issue)2 3.8 Ra, Rz measures of surface irregularity see ISO 4287 3.9 maximum field Hmax maximum abso
33、lute magnetic field strength applied as described by the test method ISO/IEC 7811-6 3.10 coercivity HcM= HcJ continuously applied magnetic field which reduces the magnetisation to zero from a previous maximum magnetisation state in the opposite direction, the quantity of interest being that which is
34、 measured parallel to the longitudinal axis of the stripe ISO/IEC 7811-6 1 The definitions used in ISO/IEC 7811 refer to embossing and electronic encoding which are not defined in ISO/IEC 15457. However, printing on issue (as opposed to pre-printing) frequently accompanies magnetic encoding in appli
35、cations of thin flexible cards. 2In certain applications of thin flexible cards, the purpose of testing returned cards is to establish their suitability to be re-issued for re-use. Such testing is generally done automatically by bulk sorter/encoder equipment. Licensed Copy: sheffieldun sheffieldun,
36、na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) 3 3.11 longitudinal squareness SQ = Mr/M at (Hmax) ratio of the value of magnetisation (Mr) at zero magnetic field (H=0) after the application and removal of the maximum field (Hmax) to the magnetisation (M) a
37、t the maximum field applied (Hmax) measured along the longitudinal axis of the stripe ISO/IEC 7811-6 3.12 switching field by derivative SFD the width at half height of the differentiated static magnetisation curve M(H) divided by the coercivity from the same curve ISO/IEC 7811-6 3.13 switching field
38、 by slope SFS (/H2/-/H1/)/ HcM, where M(-/H1/) = 0,5Mrand M(-/H2/) = -0,5 Mr;the difference between the field values at the intercept of the static magnetisation M (H) loop with M (H) = 0,5 Mrand M (H) = -0,5 Mr, divided by the coercivity ISO/IEC 7811-6 3.14 recording technique technique, such as ma
39、gnetic or optical encoding etc., used to store data on the card 3.15 nominal bit density DR encoding density specified for a track 3.16 maximum test current Imax upper of two test write currents used for testing TFC magnetic stripes 3.17 maximum test density Dmax upper of two test recording densitie
40、s used for testing TFC magnetic stripes 3.18 minimum test current Imin lower of the two test write currents used for testing TFC magnetic stripes 3.19 minimum test density Dmin lower of two test recording densities used for testing TFC magnetic stripes 3.20 individual signal amplitude Ui base to pea
41、k amplitude of a single readback signal pulse Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) 4 3.21 average signal amplitude UA The arithmetic mean of the absolute values of the individual signal amplitudes found in
42、a readback waveform: )amplitudessignalindividualofnumbertheis(where= 1= i A n n U U n k k 3.22 modulation m range of variation of a readback signal defined by: A U UU m = 2 iminimax where Uiis the individual readback signal amplitude and UAis the average readback signal amplitude recorded at Dmaxand
43、 Imax. 4 General characteristics 4.1 Introduction Three card sizes, TFC.0, TFC.1 and TFC.5, are defined in ISO/IEC 15457-1. Common physical characteristics and the geometrical and topographical characteristics of each card size are specified in ISO/IEC 15457-1. In this part of ISO/IEC 15457, the mag
44、netic stripe and track characteristics specific to each size of card are given in separate clauses. Common characteristics are specified in clause 4. Specifications for the permitted magnetic and encoding characteristics are given in the annexes. All clauses in all parts of ISO/IEC 15457 apply to fi
45、nished cards or to the reels/packs from which such cards are taken. Certain clauses however, such as durability, concern the characteristics of the card throughout its life. As a matter of convenience and practicality, certain tests can be carried out on unfinished cards where it can be demonstrated
46、 that no significant change in that property can arise during subsequent processing. 4.2 Requirements common to all formats 4.2.1 General requirements Thin flexible cards may be finished in a variety of ways, according to the requirements of the system in which they are to be used. This part of the
47、standard deals with those which are equipped with a magnetic stripe. Stripes may be magnetically encoded, in accordance with this part of ISO/IEC 15457. The addition of a magnetic stripe and the encoding of that stripe shall not affect the continued conformance of the finished cards to the other app
48、licable parts of ISO/IEC 15457. Magnetic stripes, however presented, shall be free from defects which could interfere with usage, such as joins, discontinuities, loose particles, embedded debris, creases, indentations and high spots. They shall not adhere to, or leave an impression on, the adjacent
49、cards in a reel or pack. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 21 05:53:08 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO/IEC 15457-2:2001(E) 5 4.2.2 Reference edges Once identified in accordance with the criteria defined in clause 5 of ISO/IEC 15457-1, the same front and reference edges shall be used exclusively and consistently in applying all relevant parts of ISO/IEC 15457, including this. NOTE 1In the case of a central stripe, this constraint results in a unique relationship between reference edge