Method of modifying on-track declaration algorithm of a disk drive based upon detection of external vibration condition
    2.
    发明授权
    Method of modifying on-track declaration algorithm of a disk drive based upon detection of external vibration condition 有权
    基于外部振动条件的检测来修改磁盘驱动器的轨道上声明算法的方法

    公开(公告)号:US06795262B1

    公开(公告)日:2004-09-21

    申请号:US10185970

    申请日:2002-06-28

    IPC分类号: G11B1904

    摘要: A method of expanding the on-track operational range of a disk drive based upon detection of an external vibration condition. The method involves detecting that a vibration state exists and, while the existence of the vibration state is detected, modifying the default on-track-declaration algorithm such that a data transfer operation can be completed in less time than if the default on-track-declaration algorithm was in use.

    摘要翻译: 一种基于外部振动条件的检测来扩展磁盘驱动器的在轨操作范围的方法。 该方法涉及检测到振动状态存在,并且当检测到振动状态的存在时,修改默认的在轨声明算法,使得数据传送操作可以在比默认的在轨 - 声明算法正在使用中。

    Adjusting seek current profile on the fly
    3.
    发明授权
    Adjusting seek current profile on the fly 有权
    调整寻找当前配置文件

    公开(公告)号:US06781787B1

    公开(公告)日:2004-08-24

    申请号:US10062835

    申请日:2002-01-31

    IPC分类号: G11B5596

    CPC分类号: G11B5/5547

    摘要: A hard disk drive that determines a saturation current of a voice coil motor (VCM) during the acceleration portion of a seek operation, and uses the information to advantageously adjust current profile for subsequent portion of the seek. One example of determining the saturation current is utilization of the peak value of the saturated acceleration current whose magnitude depends on operating conditions such as temperature and supply voltage. Traditional hard disk drives use predetermined seek current profiles that are formed conservatively to account for such variations in the available current to the VCM, at the expense of sacrificing some seek performance. By determining the available current for each seek operation, the current profile can be adjusted on the fly so as to improve the seek performance.

    摘要翻译: 一种在寻道操作的加速部分期间确定音圈电动机(VCM)的饱和电流的硬盘驱动器,并且使用该信息有利地调整追踪部分的当前轮廓。 确定饱和电流的一个例子是其幅度取决于诸如温度和电源电压的操作条件的饱和加速电流的峰值的利用。 传统硬盘驱动器使用保守形成的预定寻找电流配置文件来解释对VCM的可用电流的这种变化,而牺牲某些寻找性能为代价。 通过确定每个搜索操作的可用电流,可以即时调整当前配置文件,以提高搜索性能。