Digital filter, servo control unit, and disk drive
    7.
    发明授权
    Digital filter, servo control unit, and disk drive 有权
    数字滤波器,伺服控制单元和磁盘驱动器

    公开(公告)号:US06377418B1

    公开(公告)日:2002-04-23

    申请号:US09148846

    申请日:1998-09-03

    IPC分类号: G11B5596

    摘要: The present invention provides a digital filter which is capable of preventing filter outputs from being discontinuous when a filter characteristic is changed. Initially, a servo assistant (SA) computes parameters for computing servo data, and based on the computed parameters, the SA judges an operating mode. If the mode has been changed, the SA will advance in processing. Next, the parameters of a filter are changed in correspondence with the judged operating mode, and the initial values of the interior variables of the filter are set to appropriate values.

    摘要翻译: 本发明提供一种数字滤波器,当滤波器特性改变时,能够防止滤波器输出不连续。 最初,伺服助理(SA)计算用于计算伺服数据的参数,并且基于所计算的参数,SA判断操作模式。 如果模式发生变化,SA将进行处理。 接下来,根据判断的操作模式改变滤波器的参数,并将滤波器的内部变量的初始值设置为适当的值。