公开(公告)号：US20070127150A1

公开(公告)日：2007-06-07

申请号：US11606912

申请日：2006-12-01

申请人： Yoon-chul Cho ,  Keung-youn Cho

发明人： Yoon-chul Cho ,  Keung-youn Cho

IPC分类号： G11B21/02 ,  G11B19/02

CPC分类号： G11B5/1871 ,  G11B5/02 ,  G11B2005/001

摘要： An apparatus and method is provided for storing and retrieving information from a disk in which a TPI (tracks per inch) profile of a disk drive including a write pole having a trapezoidal cross-section is adaptively varied. The method includes comparing the slope angle of sides of a write pole associated with a magnetic head to a skew angle associated with a disk area; and dividing the disk areas into a first area in which the slope angle is greater than the skew angle and a second area in which the slope angle is not greater than the skew angle. Based on this comparison result, different track pitches for the first area and the second area are determined.

摘要翻译： 提供了一种装置和方法，用于从盘中存储和检索信息，其中包括具有梯形横截面的写入极的盘驱动器的TPI（每英寸轨迹）轮廓自适应地变化。 该方法包括将与磁头相关联的写入极的边的倾斜角与与盘区相关联的倾斜角进行比较; 并且将所述盘区域划分为倾斜角度大于所述歪斜角度的第一区域和所述倾斜角度不大于所述歪斜角度的第二区域。 基于该比较结果，确定了第一区域和第二区域的不同轨道间距。

公开(公告)号：US20100297364A1

公开(公告)日：2010-11-25

申请号：US12783803

申请日：2010-05-20

申请人： Yoon Chul CHO ,  Cheol-Soon Kim ,  Ha Yong Kim

发明人： Yoon Chul CHO ,  Cheol-Soon Kim ,  Ha Yong Kim

IPC分类号： G11B5/127

CPC分类号： G11B5/865 ,  G11B5/59655 ,  G11B5/59688

摘要： A servo pattern forming method of a hard disk drive includes magnetically printing a reference servo pattern, which has different features according to zones divided along a radial direction of a disk, on the disk, and recording a final servo pattern in the disk on the basis of the reference servo pattern. As a result, the quality of a final servo pattern can be enhanced by preventing an amplitude drop that arises in an ID zone of the disk when a reference servo pattern is recorded using a conventional servo track writer.

摘要翻译： 硬盘驱动器的伺服模式形成方法包括：将根据盘的径向分割的区域具有不同特征的参考伺服模式磁性地打印在盘上，并基于该方式将最终的伺服模式记录在盘中 的参考伺服模式。 结果，当使用传统的伺服记录器记录参考伺服模式时，可以通过防止在盘的ID区中产生的振幅下降来提高最终伺服模式的质量。

公开(公告)号：US07414808B2

公开(公告)日：2008-08-19

申请号：US11606912

申请日：2006-12-01

申请人： Yoon-chul Cho ,  Keung-youn Cho

发明人： Yoon-chul Cho ,  Keung-youn Cho

IPC分类号： G11B5/09 ,  G11B5/187

CPC分类号： G11B5/1871 ,  G11B5/02 ,  G11B2005/001

摘要： An apparatus and method is provided for storing and retrieving information from a disk in which a TPI (tracks per inch) profile of a disk drive including a write pole having a trapezoidal cross-section is adaptively varied. The method includes comparing the slope angle of sides of a write pole associated with a magnetic head to a skew angle associated with a disk area; and dividing the disk areas into a first area in which the slope angle is greater than the skew angle and a second area in which the slope angle is not greater than the skew angle. Based on this comparison result, different track pitches for the first area and the second area are determined.

摘要翻译： 提供了一种装置和方法，用于从盘中存储和检索信息，其中包括具有梯形横截面的写入极的磁盘驱动器的TPI（每英寸轨迹）轮廓自适应地变化。 该方法包括将与磁头相关联的写入极的边的倾斜角与与盘区相关联的倾斜角进行比较; 并且将所述盘区域划分为倾斜角度大于所述歪斜角度的第一区域和所述倾斜角度不大于所述歪斜角度的第二区域。 基于该比较结果，确定了第一区域和第二区域的不同轨道间距。

公开(公告)号：US08035908B2

公开(公告)日：2011-10-11

申请号：US12535898

申请日：2009-08-05

申请人： Sang-Hyun Park ,  Kwang Jo Jung ,  Da Woon Chung ,  Yoon Chul Cho

发明人： Sang-Hyun Park ,  Kwang Jo Jung ,  Da Woon Chung ,  Yoon Chul Cho

IPC分类号： G11B5/86 ,  G11B5/596

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/59644 ,  G11B5/743 ,  G11B5/82

摘要： A method of forming a servo track on a recording medium includes; forming a magnetic layer, defining a first servo track region having a plurality of first magnetic segments and a second servo track region having a second plurality of magnetic segments in the magnetic layer, applying a first magnetic field to induce a first magnetization direction in the first and second pluralities of magnetic segments, forming first magnetic patterns, each having a first width, and second magnetic patterns, each having a second width different from the first width, on a first side of a substrate, disposing the substrate on the recording medium, such that the first magnetic patterns are aligned in correspondence with the plurality of first magnetic segments and the second magnetic patterns are aligned in correspondence with the plurality of second magnetic segments, and applying a second magnetic field to the recording medium to selectively induce a second magnetization direction into first selected ones of the first plurality of magnetic segments and second selected ones of the second plurality of magnetic segments.

摘要翻译： 在记录介质上形成伺服轨迹的方法包括： 形成磁性层，限定具有多个第一磁性段的第一伺服磁道区域和在磁性层中具有第二多个磁段的第二伺服磁道区域，施加第一磁场以在第一磁体区域中引入第一磁化方向 和第二多个磁段，在基板的第一面上形成每个具有第一宽度的第一磁性图案和分别具有不同于第一宽度的第二宽度的第二磁性图案，将基板设置在记录介质上， 使得第一磁图案对应于多个第一磁性段，并且第二磁性图案对应于多个第二磁性段，并且向记录介质施加第二磁场以选择性地引起第二磁化 方向进入第一多个磁段和第二选择器中的第一选定的磁极段 d个第二多个磁段。

公开(公告)号：US20100033864A1

公开(公告)日：2010-02-11

申请号：US12535898

申请日：2009-08-05

申请人： Sang-Hyun PARK ,  Kwang Jo JUNG ,  Da Woon CHUNG ,  Yoon Chul CHO

发明人： Sang-Hyun PARK ,  Kwang Jo JUNG ,  Da Woon CHUNG ,  Yoon Chul CHO

IPC分类号： G11B5/02

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/59644 ,  G11B5/743 ,  G11B5/82

摘要： A method of forming a servo track on a recording medium includes; forming a magnetic layer, defining a first servo track region having a plurality of first magnetic segments and a second servo track region having a second plurality of magnetic segments in the magnetic layer, applying a first magnetic field to induce a first magnetization direction in the first and second pluralities of magnetic segments, forming first magnetic patterns, each having a first width, and second magnetic patterns, each having a second width different from the first width, on a first side of a substrate, disposing the substrate on the recording medium, such that the first magnetic patterns are aligned in correspondence with the plurality of first magnetic segments and the second magnetic patterns are aligned in correspondence with the plurality of second magnetic segments, and applying a second magnetic field to the recording medium to selectively induce a second magnetization direction into first selected ones of the first plurality of magnetic segments and second selected ones of the second plurality of magnetic segments.

摘要翻译： 在记录介质上形成伺服轨迹的方法包括： 形成磁性层，限定具有多个第一磁性段的第一伺服磁道区域和在磁性层中具有第二多个磁段的第二伺服磁道区域，施加第一磁场以在第一磁体区域中引入第一磁化方向 和第二多个磁段，在基板的第一面上形成每个具有第一宽度的第一磁性图案和分别具有不同于第一宽度的第二宽度的第二磁性图案，将基板设置在记录介质上， 使得第一磁图案对应于多个第一磁性段，并且第二磁性图案对应于多个第二磁性段，并且向记录介质施加第二磁场以选择性地引起第二磁化 方向进入第一多个磁段和第二选择器中的第一选定的磁极段 d个第二多个磁段。