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公开(公告)号：US09117471B1
公开(公告)日：2015-08-25
申请号：US14577400
申请日：2014-12-19
发明人： Xiong Liu , Mingzhong Ding , KianKeong Ooi , Hoang Dung Vu , Chan Fan Lau , Xiang Lu
CPC分类号： G11B5/56 , G11B5/59627
摘要： An apparatus includes a controller configured to be coupled to a read/write head. The controller is configured to perform various operations including detecting a change in a time interval difference between servo sectors of a servo marked recording medium, converting the change to an offset signal that compensates for the change, and positioning the read/write head relative to the servo mark recording medium in response to the offset signal. The change in the time interval difference is representative of disk slip.
摘要翻译： 一种装置包括被配置为耦合到读/写头的控制器。 控制器被配置为执行各种操作，包括检测伺服标记的记录介质的伺服扇区之间的时间间隔差的变化，将改变转换为补偿变化的偏移信号，以及将读/写头相对于 响应于偏移信号的伺服标记记录介质。 时间间隔差异的变化代表了磁盘滑移。
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公开(公告)号：US10002630B1
公开(公告)日：2018-06-19
申请号：US15636438
申请日：2017-06-28
发明人： Hoang Dung Vu , Xiang Lu , GuoQing Zhang , Chan Fan Lau
CPC分类号： G11B5/59622 , G11B5/5582 , G11B5/59627
摘要： An apparatus includes a frequency analyzer circuitry, filter circuitry, and voice coil motor (VCM) control circuitry. The frequency analyzer circuitry is configured to detect one or more dominant frequencies of a position error signal (PES). The filter circuitry is configured to identify one or more filters in response to detecting the one or more dominant frequencies, apply the one or more identified filters to at least one of a microactuator control signal and PES, and generate a VCM compensation signal in response to the filtered PES or the microactuator control signal. The VCM control circuitry is configured to generate a VCM control signal in response to the VCM compensation signal.
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