Method and apparatus for head positioning using spiral servo patterns in a disk drive
    4.
    发明授权
    Method and apparatus for head positioning using spiral servo patterns in a disk drive 有权
    在磁盘驱动器中使用螺旋伺服模式进行磁头定位的方法和装置

    公开(公告)号:US07855850B2

    公开(公告)日:2010-12-21

    申请号:US12146622

    申请日:2008-06-26

    IPC分类号: G11B21/12

    摘要: According to one embodiment, a disk drive having a disk, a read head, a servo controller, and a CPU. In the disk, a multi-spiral servo pattern is recorded. The read head reproduces a hexagon-shaped detection signal from the multi-spiral servo pattern. The servo controller generates amplitudes values for respective frames, from the multi-spiral servo pattern. The CPU performs positional-error calculation by using the amplitude values for the frames. Upon detecting a positional change of the head is detected, the CPU performs the positional-error calculation by using the amplitude values generated at the time of replacing the frames with other frames, and corrects the positional error by adding an offset determined from the positional change of the head, to the result of the positional-error calculation.

    摘要翻译: 根据一个实施例,具有盘,读头,伺服控制器和CPU的盘驱动器。 在盘中记录多螺旋伺服模式。 读取头再现来自多螺旋伺服模式的六边形检测信号。 伺服控制器从多螺旋伺服模式产生各个帧的振幅值。 CPU通过使用帧的振幅值来执行位置误差计算。 在检测到检测到头部的位置变化时,CPU通过使用在用其他帧替换帧时产生的振幅值来执行位置误差计算,并且通过将从位置变化确定的偏移相加来校正位置误差 的位置误差计算结果。

    DISK DRIVE DEVICE AND SERVO WRITE METHOD
    6.
    发明申请
    DISK DRIVE DEVICE AND SERVO WRITE METHOD 有权
    磁盘驱动器件和伺服写入方法

    公开(公告)号:US20090168218A1

    公开(公告)日:2009-07-02

    申请号:US12248827

    申请日:2008-10-09

    IPC分类号: G11B5/09

    摘要: According to one embodiment, a servo write module is configured to write radial servo patterns on the disk media using a first spiral servo pattern of the spiral servo patterns as a base pattern for tracing, to detect a shift amount of a sync mark position in each of other spiral servo patterns with respect to a sync mark position in the first spiral servo pattern, and to adjust, when the base pattern is switched from the first spiral servo pattern to a second spiral servo pattern of the spiral servo patterns, a phase of the servo write clock based on the detected shift amount corresponding to the second spiral servo pattern.

    摘要翻译: 根据一个实施例,伺服写入模块被配置为使用螺旋伺服模式的第一螺旋伺服模式作为跟踪的基本模式在盘介质上写入径向伺服模式,以检测每个中的同步标记位置的移位量 相对于第一螺旋伺服模式中的同步标记位置的其他螺旋伺服模式,并且当基本模式从第一螺旋伺服模式切换到螺旋伺服模式的第二螺旋伺服模式时,调整相位 基于对应于第二螺旋伺服模式的检测到的移位量的伺服写入时钟。

    Method and apparatus for writing servo data in a disk drive
    8.
    发明申请
    Method and apparatus for writing servo data in a disk drive 失效
    将伺服数据写入磁盘驱动器的方法和装置

    公开(公告)号:US20050078403A1

    公开(公告)日:2005-04-14

    申请号:US10946362

    申请日:2004-09-22

    申请人: Seiji Mizukoshi

    发明人: Seiji Mizukoshi

    CPC分类号: G11B5/59633 G11B5/59655

    摘要: A disk drive having a servo writer is disclosed. The servo writer is configured to write a new servo pattern for which an offset is adjusted by using an offset value of a track unit with respect to a disk on which a basic servo pattern is recorded.

    摘要翻译: 公开了一种具有伺服写入器的磁盘驱动器。 伺服写入器被配置为通过使用相对于其上记录有基本伺服模式的盘的轨道单元的偏移值来写入对其进行偏移的新的伺服模式。