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。

    Method and apparatus for writing servo data in a disk drive
    7.
    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。

    METHOD AND APPARATUS FOR POSITIONING HEAD ON DATA TRACK WITH A VARIABLE TRACK WIDTH IN A DISK DRIVE
    8.
    发明申请
    METHOD AND APPARATUS FOR POSITIONING HEAD ON DATA TRACK WITH A VARIABLE TRACK WIDTH IN A DISK DRIVE 审中-公开
    用于在盘驱动器中具有可变轨迹宽度的数据跟踪上的头部定位的方法和装置

    公开(公告)号:US20090002872A1

    公开(公告)日:2009-01-01

    申请号:US12146851

    申请日:2008-06-26

    IPC分类号: G11B5/58

    CPC分类号: G11B5/59627 G11B5/59688

    摘要: According to one embodiment, there is provided a disk drive has a controller that performs positioning control of a head on a data track with a variable track width. The disk drive has a disk in which concentric servo tracks are configured at regular intervals and in which the positions of the individual servo tracks and servo data including position information that enables a position in the range of a servo track width to be detected in units of a specific minimum offset are recorded. The controller performs positioning control of the head on a data track with a variable track width on the basis of the servo track.

    摘要翻译: 根据一个实施例,提供了一种磁盘驱动器,其具有控制器,该控制器对具有可变磁道宽度的数据磁道执行头部的定位控制。 磁盘驱动器具有以规则的间隔配置同心伺服磁道的磁盘,其中包括能够以伺服磁道宽度范围内的位置检测的各个伺服磁道和伺服数据的位置被检测为单位为 记录特定的最小偏移量。 控制器基于伺服轨迹在具有可变轨道宽度的数据轨道上执行头部的定位控制。