公开(公告)号：US06377413B1

公开(公告)日：2002-04-23

申请号：US09425576

申请日：1999-10-22

申请人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

发明人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

IPC分类号： G11B509

CPC分类号： G11B5/596 ,  Y10T29/49025 ,  Y10T29/49036

摘要： A method and apparatus for processing a magnetic disc prior to assembly of the disc in a disc drive storage assembly includes measuring a physical characteristic of the magnetic disc and encoding an information pattern within the magnetic disc. The information pattern is associated with the measured physical characteristic.

摘要翻译： 在将盘组装在盘驱动器存储组件中之前处理磁盘的方法和装置包括测量磁盘的物理特性并对磁盘内的信息模式进行编码。 信息模式与测量的物理特性相关联。

公开(公告)号：US06879458B2

公开(公告)日：2005-04-12

申请号：US10304924

申请日：2002-11-26

申请人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

发明人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

IPC分类号： G11B5/00 ,  G11B5/55 ,  G11B5/596 ,  G11B21/02

CPC分类号： G11B5/00 ,  G11B5/5534 ,  G11B5/59633

摘要： A method for thermally writing a magnetic servo pattern on a magnetic disc medium prior to assembling the medium in a disc drive is provided in which the medium is first magnetized in a uniform magnetization direction. A plurality of magnetic domains are then thermally written on the medium, one magnetic domain at a time, by individually heating each magnetic domain with a light beam while exposing the magnetic domain to a magnetic field. The magnetic field has an orientation that is opposite to the uniform magnetization direction. The light beam forms an illumination pattern on the medium having a shape that at least partially defines a boundary of each magnetic domain.

摘要翻译： 提供了在将介质组装在盘驱动器中之前将磁性伺服图形热写入磁盘介质上的方法，其中介质首先以均匀的磁化方向被磁化。 然后通过在将磁畴暴露于磁场的同时用光束单独加热每个磁畴，将多个磁畴一次热写入介质一个磁畴。 磁场具有与均匀磁化方向相反的取向。 光束在具有至少部分地限定每个磁畴的边界的形状的介质上形成照明图案。

公开(公告)号：US06490117B1

公开(公告)日：2002-12-03

申请号：US09425768

申请日：1999-10-22

申请人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

发明人： Alexei H. Sacks ,  Li-Ping Wang ,  Donald E. Curtiss

IPC分类号： G11B2102

CPC分类号： G11B5/00 ,  G11B5/5534 ,  G11B5/59633

摘要： A method and apparatus for thermally writing a magnetic servo pattern on a magnetic disc medium prior to assembling the medium in a disc drive are provided in which the medium is first magnetized in a uniform magnetization direction. A plurality of magnetic domains are then thermally written on the medium, one magnetic domain at a time, by individually heating each magnetic domain with a light beam while exposing the magnetic domain to a magnetic field. The magnetic field has an orientation that is opposite to the uniform magnetization direction. The light beam forms an illumination pattern on the medium having a shape that at least partially defines a boundary of each magnetic domain.

摘要翻译： 提供了在将介质组装在盘驱动器中之前将磁性伺服图形热写入磁盘介质上的方法和装置，其中介质首先以均匀的磁化方向被磁化。 然后通过在将磁畴暴露于磁场的同时用光束单独加热每个磁畴，将多个磁畴一次热写入介质一个磁畴。 磁场具有与均匀磁化方向相反的取向。 光束在具有至少部分地限定每个磁畴的边界的形状的介质上形成照明图案。