BS ISO IEC 7811-7-2014 Identification cards Recording technique Magnetic stripe High coercivity high density《识别卡 记录技术 磁条 高矫顽力和高密度》.pdf

1、BSI Standards Publication BS ISO/IEC 7811-7:2014 Identification cards Recording technique Part 7: Magnetic stripe High coercivity, high densityBS ISO/IEC 7811-7:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO/IEC 7811-7:2014. The UK participation in its

2、preparation was entrusted to Technical Committee IST/17, Cards and personal identification. A 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 responsibl

3、e for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 80374 1 ICS 35.240.15 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standar

4、ds Policy and Strategy Committee on 30 September 2014. Amendments issued since publication Date Text affectedBS ISO/IEC 7811-7:2014 Identification cards Recording technique Part 7: Magnetic stripe High coercivity, high density Cartes didentification Technique denregistrement Partie 7: Bandeau magnti

5、que Haute coercitivit, haute densit ISO/IEC 2014 INTERNATIONAL STANDARD ISO/IEC 7811-7 Second edition 2014-09-01 Reference number ISO/IEC 7811-7:2014(E)BS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E)ii ISO/IEC 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2014 All rights reserved. Unles

6、s otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the ad

7、dress below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E) ISO/IEC 2014 All rights re

8、served iii Contents Page Foreword iv 1 Scope .1 2 Conformance .1 3 Normative references 1 4 Terms and definitions . 2 5 Physical characteristics of the identification card 4 5.1 Magnetic stripe area warpage 4 5.2 Surface distortions . 4 6 Physical characteristics of the magnetic stripe 5 6.1 Height

9、and surface profile of the magnetic stripe area 5 6.2 Surface roughness 7 6.3 Adhesion of stripe to card . 7 6.4 Wear of magnetic stripe from read/write head . 7 6.5 Resistance to chemicals . 8 7 Performance characteristics for the magnetic material .8 7.1 General . 8 7.2 Testing and operating envir

10、onment . 8 7.3 Signal amplitude requirements for magnetic media 8 8 Encoding technique 10 9 Encoding specification.11 9.1 Angle of recording .11 9.2 Nominal bit density 12 9.3 Flux transition spacing variation .12 9.4 Signal amplitude requirements .12 9.5 Bit configuration .12 9.6 Direction of recor

11、ding 13 9.7 Leading and trailing clock bits13 10 Data structure 13 10.1 Track format .13 10.2 Coding for error detection and correction .15 11 Decoding 18 12 Location of encoded tracks .19 Annex A (informative) Compatibility of magnetic stripes (ISO/IEC 7811-6 and ISO/IEC 7811-7) .20 Annex B (inform

12、ative) Magnetic stripe abrasivity 21 Annex C (informative) Static magnetic characteristics 22 Annex D (informative) Reed-Solomon code references .25BS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnic

13、al 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 activ

14、ity. 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 commit

15、tee, ISO/IEC JTC 1. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of document should be noted. This document was drafted in acco

16、rdance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). 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 right

17、s. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitu

18、te an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The comm

19、ittee responsible for this document is Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 17, Cards and personal identification. This second edition cancels and replaces the first edition (ISO/IEC 7811-7:2004) of which it constitutes a major revision with the following

20、changes. The primary standard cards held by Q-Card are used to calibrate the manufacture of secondary reference cards. Other primary standard cards held by PTB and Card testing International (CTI) are used as backup to replace cards held by Q-Card as they wear out. Delete reference to character sets

21、 in the Scope since none are used in this International Standard. List of major differences has been moved from the Introduction to Annex A. The supplier of secondary reference cards has changed from PTB to Q-Card. ISO/IEC 7811 consists of the following parts, under the general title Identification

22、cards Recording technique: Part 1: Embossing Part 2: Magnetic stripe Low coercivity Part 6: Magnetic stripe High coercivity Part 7: Magnetic stripe High coercivity, high density Part 8: Magnetic stripe High coercivity of 51,7 kA/m (650 Oe) Part 9: Tactile identifier mark Notes in this International

23、Standard are only used for giving additional information intended to assist in the understanding or use of the International Standard and do not contain provisions or requirements to which it is necessary to conform in order to be able to claim compliance with this International Standard.iv ISO/IEC

24、2014 All rights reservedBS ISO/IEC 7811-7:2014INTERNATIONAL ST ANDARD ISO/IEC 7811-7:2014(E) Identification cards Recording technique Part 7: Magnetic stripe High coercivity, high density 1 Scope This part of ISO/IEC 7811 is one of a series of International Standards describing the characteristics f

25、or identification cards as defined in the definitions clause and the use of such cards for international interchange. This part of ISO/IEC 7811 specifies requirements for a high coercivity magnetic stripe (including any protective overlay) on an identification card and encoding technique. It takes i

26、nto consideration both human and machine aspects and states minimum requirements. Coercivity influences many of the quantities specified in this part of ISO/IEC 7811 but is not itself specified. The main characteristic of the high coercivity magnetic stripe is its improved resistance to erasure. Thi

27、s is achieved with minimal probability of damage to other magnetic stripes by contact while retaining read compatibility with magnetic stripes as defined in ISO/IEC 7811-2. This standard provides for a card capacity of approximately 10 times that of a card conforming to ISO/IEC 7811-6. The number of

28、 tracks has been increased to six, each track being approximately half the width of tracks conforming to ISO/IEC 7811-6, located so that readers designed to read these high density tracks will also be able to read cards conforming to ISO/IEC 7811-2 and ISO/IEC 7811-6. Data is encoded in 8 bit bytes

29、using the MFM encoding technique. Data framing is used to limit error propagation and error correction techniques further improve reliability of reading. It is the purpose of this series of International Standards to provide criteria to which cards shall perform. No consideration is given within the

30、se International Standards to the amount of use, if any, experienced by the card prior to test. Failure to conform to specified criteria should be negotiated between the involved parties. ISO/IEC 10373-2 specifies the test procedures used to check cards against the parameters specified in this part

31、of ISO/IEC 7811. NOTE Numeric values in the SI and/or Imperial measurement system in this part of ISO/IEC 7811 might have been rounded off and therefore are consistent with, but not exactly equal to, each other. Either system can be used, but the two should not be intermixed or reconverted. The orig

32、inal design was made using the Imperial measurement system. 2 Conformance A prerequisite for conformance with this part of ISO/IEC 7811 is conformance with ISO/IEC 7810. An identification card is in conformance with this part of ISO/IEC 7811 if it meets all mandatory requirements specified herein. D

33、efault values apply if no others are specified. 3 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition

34、 of the referenced document (including any amendments) applies. ISO/IEC 4287-1, Surface roughness Terminology Part 1: Surface and its parameters ISO/IEC 2014 All rights reserved 1BS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E) ISO/IEC 7810, Identification cards Physical characteristics ISO/IEC 10373-1,

35、 Identification cards Test methods Part 1: General characteristics ISO/IEC 10373-2, Identification cards Test methods Part 2: Cards with magnetic stripes 4 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC 7810 and the following apply. 4.1 primary st

36、andard set of reference cards established by Physikalisch-Technische Bundesanstalt (PTB) and maintained by PTB, Q-Card, and WG1 secretariat that represent the values of UR and IR designated RM7811-6 4.2 secondary standard reference card designated RM7811-6 that is related to the primary standard as

37、stated in the calibration certificate supplied with each card Note 1 to entry: Secondary standards can be ordered from Q-Card, 301 Reagan St., Sunbury, PA 17801, USA. The source of secondary standards will be maintained at least until 2018. 4.3 unused un-encoded card card possessing all the componen

38、ts required for its intended purpose, which has not been subjected to any personalization or testing operation, and which has been stored in a clean environment with no more than 48 h exposure to day-light at temperatures between 5 C to 30 C and humidity between 10 % to 90 % without experiencing the

39、rmal shock 4.4 unused encoded card card according to 4.3 that has only been encoded with all the data required for its intended purpose (e.g. magnetic encoding, embossing, electronic encoding) 4.5 returned card card according to 4.4 after it has been issued to the card holder and returned for the pu

40、rpose of testing 4.6 flux transition location of the greatest rate of change with distance of the magnetization 4.7 reference current I R minimum recorded current amplitude under the given test conditions that causes, on the reference card, a readback signal amplitude equal to 80 % of the reference

41、signal amplitude U R , at a density of 20 flux transitions per mm (508 flux transitions per inch) as shown in Figure 6 4.8 reference flux level F R flux level in the test head that corresponds to the reference current I R 4.9 test recording currents two recording currents defined by: I min= recordin

42、g current corresponding to 2,2 F R and I max= recording current corresponding to 2,5 F R2 ISO/IEC 2014 All rights reservedBS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E) 4.10 individual signal amplitude U i base-to-peak amplitude of a single readback voltage signal 4.11 average signal amplitude U A sum

43、 of the absolute values of the amplitude of each signal peak (U i ) divided by the number of signal peaks (n) for a given track over the length of the magnetic stripe area 4.12 reference signal amplitude U R maximum value of the average signal amplitude of a reference card corrected to the primary s

44、tandard 4.13 physical recording density number of flux transitions per unit length recorded on a track 4.14 bit density number of data bits stored per unit of length (bits/mm or bpi) 4.15 bit cell distance for a data bit nominally the reciprocal of the bit density (see Figure 8) 4.16 average bit cel

45、l B a product of bit cell length and sum of the actual distances for all flux transition intervals on a track divided by the sum of the nominal distances for all flux transition intervals on the track 4.17 local average bit cell B a6 comparison reference for a given flux transition interval equal to

46、 the nominal L1 distance multiplied by the sum of the actual distances for the previous six flux transition intervals divided by the sum of the nominal distances for the previous six flux transition intervals L1 ( actual)/( nominal) 4.18 demagnetization current I d D C current value that reduces the

47、 average signal amplitude to 80 % of the reference signal amplitude (U R ) on a secondary reference card that has been encoded at a density of 40 ft/mm (1 016 ftpi) at a current of I min 4.19 L 1 short distance between adjacent flux transitions nominally equal to 1 times the bit cell 4.20 L 2 medium

48、 distance between adjacent flux transitions nominally equal to 1,5 times the bit cell ISO/IEC 2014 All rights reserved 3BS ISO/IEC 7811-7:2014ISO/IEC 7811-7:2014(E) 4.21 L 3 long distance between adjacent flux transitions nominally equal to 2 times the bit cell 4.22 FSC frame synchronization charact

49、er 4.23 CRC cyclic redundancy check 4.24 CP column parity 4.25 U F magnitude of the individual element at 20 flux transitions per mm frequency of the Fourier spectrum for a given track over the length of the magnetic stripe area 5 Physical characteristics of the identification card The identification card shall conform to the specification given in ISO/IEC 7810. WARNING The attention of card issuers is drawn to the fact that information held on the magnetic stripe may be rendered ine