识别卡.记录技术.第6部分:磁条.高矫顽磁性

[中文适用范围]： ISO/IEC 7811 定义了 ISO/IEC 7811 本部分第 4 条中定义的身份证的特征以及此类卡在国际交换中的使用。 ISO/IEC 7811 的这一部分规定了身份证上高矫顽力磁条（包括任何保护性覆盖层）、编码技术和编码字符集的要求。 它考虑了人和机器方面并规定了最低要求。 矫顽力影响 ISO/IEC 7811 本部分中指定的许多量，但其本身并未指定。 高矫顽力磁条的主要特点是提高了耐擦除性。 这是通过最小化接触损坏其他磁条的可能性来实现的，同时保持与 ISO/IEC 7811-2 中定义的磁条的读取兼容性。 ISO/IEC 7811 提供了卡的执行标准。 ISO/IEC 7811 中没有考虑卡在测试前所经历的使用量（如果有）。 不符合规定标准的，有关各方应进行协商。 ISO/IEC 10373-2 规定了用于根据 ISO/IEC 7811 本部分中规定的参数检查卡的测试程序。 注：ISO/IEC 7811 本部分中的 SI 和/或英制测量系统中的数值可能已被四舍五入后，因此彼此一致，但不完全相等。 可以使用任一系统，但两者不应混合或重新转换。 最初的设计是使用英制测量系统进行的。 [外文原描述]： ISO/IEC 7811 defines the characteristics of identification cards. ISO/IEC 7811-6:2008 provides criteria to which cards shall perform and specifies the requirements for such cards used for international interchange. It takes into consideration both human and machine aspects and states minimum requirements. ISO/IEC 7811-6:2008 specifies requirements for a high coercivity magnetic stripe (including any protective overlay) on an identification card, the encoding technique and coded character sets. It includes a modified algorithm for waveform measurement which produces more consistent results (incorporated from ISO/IEC 7811-6:2001/Amd.1:2005), and an additional requirement has been added for signal amplitude. ISO/IEC 7811-6:2008 specifies the following: the conditions for conformance; physical characteristics for the card (warpage and surface distortions) and the magnetic stripe area (location, height and surface profile, roughness, adhesion, wear, and resistance to chemicals); the signal amplitude performance characteristics of the magnetic stripe; the encoding specification including technique (F2F), angle of recording, bit density, flux transition spacing variation, and signal amplitude; the data structure including track format, the use of error correction techniques; the location of encoded tracks. ISO/IEC 7811-6:2008, together with a standard for test methods, provides for interchange between various types of identification card processing devices and systems.