ISO/IEC 7811-7:2004 确认卡 记录技术-第7部分： 磁条 高矫顽磁性、高密度

标准编号：ISO/IEC 7811-7:2004

中文名称：确认卡 记录技术-第7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：2004-07

标准范围

ISO/IEC 7811-7（2004）是描述识别卡特性的一系列国际标准之一。ISO/IEC 7811-7的目的是提供卡的性能标准，并规定用于国际交换的此类卡的要求。它考虑了人和机器两个方面，并规定了最低要求。ISO/IEC 7811-7规定了识别卡上的高矫顽力磁条（包括任何保护性覆盖层）、编码技术和编码字符集的要求。这种编码技术提供的卡容量大约是符合ISO/IEC 7811-6的卡容量的10倍。轨道数量增加到六条，每条轨道的宽度约为符合ISO/IEC 7811-如图6所示，其位置使得设计用于读取这些高密度磁道的读取器也能够读取符合ISO/IEC 7811-2和ISO/IEC 7811-6的卡。使用MFM编码技术以八位字节对数据进行编码。数据成帧用于限制错误传播，纠错技术进一步提高了读取的可靠性。ISO/IEC 7811-7规定:符合性条件、卡的物理特性（翘曲和表面畸变）和磁条区域（位置、高度和表面轮廓、粗糙度、附着力、磨损和耐化学性）、磁条的信号幅度性能特性、包括技术（MFM）的编码规范、记录角度、位密度、磁通过渡间距变化和信号幅度、包括磁道格式的数据结构、纠错技术的使用、ID-1、ID-2和ID-3尺寸卡、解码技术和编码轨道的位置。ISO/IEC 7811-7与测试方法标准一起提供了各种类型的识别卡处理设备和系统之间的互换。

ISO/IEC 7811-7(2004) is one of a series of International Standards describing the characteristics of identification cards. It is the purpose of ISO/IEC 7811-7 to provide criteria to which cards shall perform and to specify the requirements for such cards used for international interchange. It takes into consideration both human and machine aspects and states minimum requirements.ISO/IEC 7811-7 specifies requirements for a high coercivity magnetic stripe (including any protective overlay) on an identification card, the encoding technique and coded character sets. This encoding technique provides for a card capacity of approximately 10 times that of a card conforming to ISO/IEC 7811-6. The number of 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 eight-bit bytes using the MFM encoding technique. Data framing is used to limit error propagation, and error correction techniques further improve reliability of reading.ISO/IEC 7811-7 specifies:

• 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 (MFM), angle of recording, bit density, flux transition spacing variation and signal amplitude,
• the data structure including track format, use of error correction techniques, user data capacity for ID-1, ID-2 and ID-3 size cards, and decoding techniques, and
• the location of encoded tracks.

ISO/IEC 7811-7, together with a standard for test methods, provides for interchange between various types of identification card processing devices and systems.

标准预览图