公开(公告)号：US06771567B2

公开(公告)日：2004-08-03

申请号：US09992588

申请日：2001-11-06

申请人： Jean-Pierre Nozieres ,  Sebastien Ferrand ,  Yannick Maral ,  Jean-Christophe Toussaint ,  Jørn Raastad

发明人： Jean-Pierre Nozieres ,  Sebastien Ferrand ,  Yannick Maral ,  Jean-Christophe Toussaint ,  Jørn Raastad

IPC分类号： G11B1100

CPC分类号： G11B11/10547

摘要： A magneto-optical read head for detecting magnetic transitions representing data stored in a magnetic recording medium as a sense layer having an optical property that is magnetic field-dependent, two magnetic shield layers respectively disposed on opposite sides of the sense layer and allowing magnetic flux from substantially only one of the magnetic transitions to interact with the sense layer at a time, with one of the magnetic shield layers being transparent at a wavelength allowing light at that wavelength to enter into and exit from the sense layer.

摘要翻译： 一种磁光读头，用于检测表示存储在磁记录介质中的数据的磁转换，作为具有磁场依赖性的光学特性的感测层，分别设置在感测层的相对侧上的两个磁屏蔽层，并允许磁通量 从基本上只有一个磁性跃迁到一次与感应层相互作用，其中一个磁屏蔽层在允许该波长的光进入和离开感测层的波长处是透明的。

公开(公告)号：US07405907B2

公开(公告)日：2008-07-29

申请号：US10910331

申请日：2004-08-03

申请人： Jørn Raastad

发明人： Jørn Raastad

IPC分类号： G11B5/127

CPC分类号： G11B5/3903

摘要： A read head for reading magnetically stored data in adjacent tracks of a medium has at least two elongate bodies, each having at least one magnetoresistive part. The magnetoresistive parts have sensor portions defined along a length of the elongate bodies, by electrical connections to the magnetoresistive parts. A shield is provided at least on opposite transfer sides of the elongate bodies. The read head is used for calculating a position error signal by calculating a correlation between signals received from the respective sensor portions when the head is positioned over adjacent tracks on the medium, with one of the sensors positioned near a boundary between the tracks. The position error is calculated by determining the correlation between signals from the respective sensor portions.

摘要翻译： 用于在介质的相邻轨道中读取磁存储数据的读头具有至少两个细长体，每个细长体具有至少一个磁阻部分。 磁阻部件具有通过与磁阻部件的电连接沿着细长主体的长度限定的传感器部分。 至少在细长体的相对的转移侧上设置护罩。 读取头用于通过计算位置误差信号来计算当磁头位于介质上的相邻轨道上时从各个传感器部分接收的信号之间的相关性，其中一个传感器位于轨道之间的边界附近。 通过确定来自相应传感器部分的信号之间的相关性来计算位置误差。

公开(公告)号：US07172149B1

公开(公告)日：2007-02-06

申请号：US11209121

申请日：2005-08-22

申请人： Guttorm Rudi ,  Ladislav Rubas ,  Jørn Raastad

发明人： Guttorm Rudi ,  Ladislav Rubas ,  Jørn Raastad

IPC分类号： G03B1/58

CPC分类号： G11B15/60 ,  G11B15/673 ,  G11B23/107

摘要： In a tape system and method for guiding a tape from a tape reel to a read/write tape head and then to a take-up reel, the tape is guided along a tape path such that the path surrounds the take-up reel and then begins winding on the take-up reel. With such a long tape guide path, less pressure is required on an edge of the tape for positioning the tape at the tape head.

摘要翻译： 在将带从磁带卷轴引导到读/写磁带头然后到卷取卷轴的磁带系统和方法中，磁带沿着磁带路径被引导，使得路径围绕卷绕卷轴然后 开始卷绕在收纸卷轴上。 使用这种长的带引导路径，在带的边缘上需要更少的压力以将带定位在磁头上。