公开(公告)号：US06600313B1

公开(公告)日：2003-07-29

申请号：US10088802

申请日：2002-07-01

申请人： Kevin John Atkins ,  Ian Macdonald Green

发明人： Kevin John Atkins ,  Ian Macdonald Green

IPC分类号： G06K708

CPC分类号： G07D7/04 ,  G06K7/015 ,  G11B5/02 ,  G11B5/035

摘要： A device for reading an elongate magnetic data carrier attached to or embedded in an article, having an active read head adapted to have a lateral extent greater than the width of the data carrier, preferably four times greater, such that the magnetic field produced by the read head results in a signal from the data carrier which has an amplitude which varies by less than 50% for head to data carrier spacings of from 0 to 60 microns. A wide read head can also make the reading of data more reproducible when reading narrow tracks using swipe readers, where precise alignment is difficult to achieve.

摘要翻译： 用于读取附接到或嵌入在物品中的细长磁性数据载体的装置，其具有适于具有大于数据载体的宽度的横向范围的有效读取头，优选地为四倍以上， 读取头导致来自数据载体的信号，其具有从0到60微米的头对数据载体间隔变化小于50％的幅度。 当使用滑动读取器读取窄轨迹时，宽的读取头也可以使数据的读取更加可重现，这样难以实现精确的对准。