公开(公告)号：US20110080820A1

公开(公告)日：2011-04-07

申请号：US12894248

申请日：2010-09-30

申请人： Jae-chul SHIM ,  Hae-Jung LEE

发明人： Jae-chul SHIM ,  Hae-Jung LEE

IPC分类号： G11B27/36

CPC分类号： G11B5/09 ,  G11B20/10009 ,  G11B20/1037 ,  G11B20/10481 ,  G11B20/1258 ,  G11B2020/1242 ,  G11B2020/1289 ,  G11B2020/1292 ,  G11B2220/2516

摘要： A data storage device determines a zone layout based on a quality evaluation factor. The zone layout is designed such that a measurement value of the quality evaluation factor for each track in each zone is within a range between a predetermined upper limit and a predetermined lower limit and a maximum amount of variation of the measurement value within each zone is substantially equal to a difference between the upper limit and the lower limit.

摘要翻译： 数据存储设备基于质量评估因子确定区域布局。 区域布局被设计成使得每个区域中的每个轨道的质量评估因子的测量值在预定上限和预定下限之间的范围内，并且每个区域内的测量值的最大变化量基本上 等于上限和下限之间的差值。

公开(公告)号：US20090316295A1

公开(公告)日：2009-12-24

申请号：US12483330

申请日：2009-06-12

申请人： Yong-su KIM ,  Jae-chul SHIM ,  Cheol-soon KIM

发明人： Yong-su KIM ,  Jae-chul SHIM ,  Cheol-soon KIM

IPC分类号： G11B5/00

CPC分类号： G11B5/59644

摘要： A method of servo writing for each track of a magnetic recording medium divided into a plurality of circular tracks including performing a phase adjustment operation by controlling a phase of a recording current according to a skew angle formed by a magnetic head and a track of the magnetic recording medium, and writing a servo pattern when the magnetic recording medium is magnetized using a magnetic head so as to have a magnetized pattern corresponding to a servo pattern.

摘要翻译： 一种用于分割成多个圆形轨迹的磁记录介质的每个轨道的伺服写入的方法，包括通过根据由磁头和磁道的轨道形成的倾斜角来控制记录电流的相位来执行相位调整操作 记录介质，并且当使用磁头磁化磁记录介质以便具有对应于伺服图案的磁化图案时，写入伺服图案。