Method and apparatus for writing servo information
    3.
    发明申请
    Method and apparatus for writing servo information 审中-公开
    用于写入伺服信息的方法和装置

    公开(公告)号:US20070047132A1

    公开(公告)日:2007-03-01

    申请号:US11447981

    申请日:2006-06-07

    IPC分类号: G11B5/58

    CPC分类号: G11B5/59655

    摘要: According to one embodiment, a servo write method for writing servo information to a disk medium used in a disk drive is disclosed. In the procedure of the servo write method, first servo information is spirally written to a disk medium in a clean room before the disk medium is incorporated into the disk drive, then, the disk medium is incorporated into the disk drive, and second servo information is concentrically written to the disk medium already incorporated in the disk drive.

    摘要翻译: 根据一个实施例,公开了一种用于将伺服信息写入到用于磁盘驱动器中的磁盘介质的伺服写入方法。 在伺服写入方法的过程中,在将磁盘介质并入磁盘驱动器之前,将第一伺服信息螺旋地写入清洁室中的磁盘介质,然后将磁盘介质并入磁盘驱动器中,并且将第二伺服信息 同心地写入已经并入磁盘驱动器的磁盘介质。

    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 HEAD POSITIONING USING SPIRAL SERVO PATTERNS IN A DISK DRIVE
    10.
    发明申请
    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头部定位的方法和装置

    公开(公告)号:US20090002871A1

    公开(公告)日:2009-01-01

    申请号:US12146622

    申请日:2008-06-26

    IPC分类号: G11B5/00

    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。