ISO-7811-6-2001.pdf
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1、 Reference number ISO/IEC 7811-6:2001/Amd.1:2005(E) ISO/IEC 2005 INTERNATIONAL STANDARD ISO/IEC 7811-6 Second edition 2001-02-01 AMENDMENT 1 2005-10-01 Identification cards Recording technique Part 6: Magnetic stripe High coercivity AMENDMENT 1: Ui6 criteria and test method Cartes didentification Te
2、chnique denregistrement Partie 6: Bandeau magntique Haute coercitivit AMENDEMENT 1: Critres Ui6 et mthode dessai ISO/IEC 7811-6:2001/Amd.1:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not
3、 be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe
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5、mber bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
6、 or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address 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 We
7、b www.iso.org Published in Switzerland ii ISO/IEC 2005 All rights reserved ISO/IEC 7811-6:2001/Amd.1:2005(E) ISO/IEC 2005 All rights reserved iii Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for
8、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 collabora
9、te 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
10、 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
11、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 righ
12、ts. Amendment 1 to ISO/IEC 7811-6:2001 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 17, Cards and personal identification. -,-,- ISO/IEC 7811-6:2001/Amd.1:2005(E) ISO/IEC 2005 All rights reserved 1 Identification cards Recording technique Part 6: M
13、agnetic stripe High coercivity AMENDMENT 1: Ui6 criteria and test method page v, Foreword Add the following after point 5: 6. The algorithm defined in Figure 7 of ISO/IEC 7811-6 has been changed to produce more consistent results. page 8, subclause 7.3, Table 1 In the Requirement column for the Wave
14、form row, replace “Ui6 u 0,05 UA6” with “Ui6 u 0,07 UA6”. Add a row above the note at the end of the table for the following text: “Use test method in Annex E for waveform criteria.” Add the following sentence to the existing note: “These values are for unencoded card tests and are not applicable fo
15、r encoded cards.” -,-,- ISO/IEC 7811-6:2001/Amd.1:2005(E) 2 ISO/IEC 2005 All rights reserved Page 9, subclause 7.3, Figure 7 Replace the figure with the one shown below. Ui6 Last 0 cross point Midpoint between adjacent peaks Midpoint between adjacent peaks a 1,5a Ui6 measurement area for Ui6 Last 0
16、cross point Last 0 cross point Last 0 cross point a 1,5a measurement area for Ui6 1. Find midpoint between 2 adjacent peaks. 2. Find 0 crossing point for waveform between midpoint and adjacent peak. 3. The measurement area is 1,5 times the distance between the midpoint and 0 cross point. 4. Find the
17、 largest signal amplitude level in the measurement area defined in the figure. 5. The absolute value of this level is the Ui6 for the waveform. ISO/IEC 7811-6:2001/Amd.1:2005(E) ISO/IEC 2005 All rights reserved 3 Page 23 Add the following annex after Annex D. Annex E (normative) Waveform Ui6 test me
18、thod E.1 Purpose The purpose of this test is to determine the degree of waveform distortion present in the read back waveform when recorded under the specified conditions. NOTE This test method will be included in the next published version of ISO/IEC 10373-2 (currently under revision). E.2 Apparatu
19、s The test shall be conducted using the apparatus specified in ISO/IEC 10373-2 for Amplitude measurements against this standard. E.3 Procedure Perform the entire sequence of measurements on the same equipment and under the same conditions. The read pass upon which measurements are made shall be perf
20、ormed while reading in the same direction as recording. Only the traverse necessary to restore the card to its start position shall intervene between the recording pass and the read pass upon which the measurements are performed. Record and read the card under the conditions specified in the base st
21、andard, with the following additional constraints: a) Encode flux transitions at the density specified in Table 1 across the full length on the card in the track 2 position. b) Determine and record the value of the average amplitude UA6. c) Using the procedure in the base standard, find the largest
22、value of Ui6 for the card and record this as the Ui6 value. E.4 Test report The report shall give the quantity values obtained and shall state whether or not the result conforms to the requirements of the base standard. -,-,- ISO/IEC 7811-6:2001/Amd.1:2005(E) ICS 35.240.15 Price based on 3 pages ISO
23、/IEC 2005 All rights reserved Reference number ISO/IEC 7811-6:2001(E) ISO/IEC 2001 INTERNATIONAL STANDARD ISO/IEC 7811-6 Second edition 2001-02-01 Identification cards Recording technique Part 6: Magnetic stripe High coercivity Cartes didentification Technique denregistrement Partie 6: Bandeau magnt
24、ique Haute coercitivit ISO/IEC 7811-6:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer perf
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