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    • 3. 发明授权
    • Methods of forming and reading servo track and data storage apparatus
    • 伺服轨迹和数据存储装置的形成和读取方法
    • US08035908B2
    • 2011-10-11
    • US12535898
    • 2009-08-05
    • Sang-Hyun ParkKwang Jo JungDa Woon ChungYoon Chul Cho
    • Sang-Hyun ParkKwang Jo JungDa Woon ChungYoon Chul Cho
    • G11B5/86G11B5/596
    • G11B5/865B82Y10/00G11B5/59644G11B5/743G11B5/82
    • 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.
    • 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。