标准编号：ISO/IEC 7811-7:2014
中文名称：识别卡 记录技术 第2部分：磁条 高矫顽磁性、高密度
英文名称：Identification cards — Recording technique — Part 7: Magnetic stripe — High coercivity, high density
发布日期：2014-09
标准范围
This part of ISO/IEC 7811 is one of a series of International Standards describing the characteristicsfor identification cards as defined in the definitions clause and the use of such cards for internationalinterchange.This part of ISO/IEC 7811 specifies requirements for a high coercivity magnetic stripe (including anyprotective overlay) on an identification card and encoding technique. It takes into consideration bothhuman and machine aspects and states minimum requirements.Coercivity influences many of the quantities specified in this part of ISO/IEC 7811 but is not itselfspecified. The main characteristic of the high coercivity magnetic stripe is its improved resistance toerasure. This is achieved with minimal probability of damage to other magnetic stripes by contact whileretaining 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 toISO/IEC 7811-6. The number of tracks has been increased to six, each track being approximately halfthe width of tracks conforming to ISO/IEC 7811-6, located so that readers designed to read these highdensity tracks will also be able to read cards conforming to ISO/IEC 7811-2 and ISO/IEC 7811-6. Data isencoded in 8 bit bytes using the MFM encoding technique. Data framing is used to limit error propagationand 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 these International Standards to the amount of use, if any, experiencedby the card prior to test. Failure to conform to specified criteria should be negotiated between theinvolved parties.ISO/IEC 10373-2 specifies the test procedures used to check cards against the parameters specified inthis part of ISO/IEC 7811.NOTE Numeric values in the SI and/or Imperial measurement system in this part of ISO/IEC 7811 mighthave been rounded off and therefore are consistent with, but not exactly equal to, each other. Either system canbe used, but the two should not be intermixed or reconverted. The original design was made using the Imperialmeasurement system.
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