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    • 1. 发明授权
    • Disk drive resetting fly height reference generated from a degrading calibration track
    • 从降级校准轨道生成的磁盘驱动器重置飞行高度参考
    • US08773802B1
    • 2014-07-08
    • US13157809
    • 2011-06-10
    • Kent D. AndersonShafa DahandehGalvin T. ChiaAlvin W. TanNoureddine KermicheMing Jin
    • Kent D. AndersonShafa DahandehGalvin T. ChiaAlvin W. TanNoureddine KermicheMing Jin
    • G11B5/60
    • G11B5/6076G11B5/6029
    • A disk drive is disclosed comprising a head actuated over a disk and a fly height actuator operable to control a fly height of the head in response to a fly height control signal. A touchdown operation is executed to set an operating fly height control signal by adjusting the fly height control signal until the head contacts the disk. A fly height calibration track is then read to set a fly height reference. When calibrating the operating fly height control signal, the fly height calibration track is read and the operating fly height control signal is adjusted in response to the fly height reference. When the adjusted operating fly height control signal is invalid, the touchdown operation is re-executed to reset the operating fly height control signal and then the fly height calibration track is read to reset the fly height reference.
    • 公开了一种磁盘驱动器,其包括在磁盘上致动的磁头和可高速运行的飞行高度致动器,用于响应于飞行高度控制信号来控制磁头的飞行高度。 执行触地操作以通过调整飞行高度控制信号直到磁头与磁盘接触来设定操作飞行高度控制信号。 然后读取飞行高度校准轨道以设置飞行高度参考。 当校准操作飞行高度控制信号时,读取飞行高度校准轨迹,并且响应于飞行高度参考来调整操作飞行高度控制信号。 当调整后的操作飞行高度控制信号无效时,重新执行触地操作以复位操作飞行高度控制信号,然后读取飞行高度校准轨道以重置飞行高度参考。
    • 5. 发明授权
    • Systems and methods for off track error recovery
    • 离线错误恢复的系统和方法
    • US08810940B2
    • 2014-08-19
    • US13021814
    • 2011-02-07
    • Ming JinShaohua Yang
    • Ming JinShaohua Yang
    • G11B5/09
    • G11B5/59627G11B5/012G11B20/10388G11B2220/2516
    • Various embodiments of the present invention provide systems and methods for recovering data from a storage medium. As an example, a data recovery circuit is disclosed that includes: a controller circuit, a data processing circuit, a selector circuit, and a combining circuit. The controller circuit is operable to position a sensor over a track of the storage medium at a first distance from the center of the track to yield a first data set, and to position the sensor over the track of the storage medium at a second distance from the center of the track to yield a second data set. The data processing circuit is operable to process a processing data set, and the selector circuit is operable to select between the first data set and a combined data set as the processing data set. The combining circuit is operable to combine the first data set with at least the second data set to yield the combined data set.
    • 本发明的各种实施例提供了用于从存储介质恢复数据的系统和方法。 作为示例,公开了一种数据恢复电路,其包括:控制器电路,数据处理电路,选择器电路和组合电路。 控制器电路可操作以将传感器定位在与轨道中心隔开的第一距离处的存储介质的轨道上,以产生第一数据集,并且将传感器定位在距离存储介质的第二距离处的存储介质的轨道上 轨道的中心产生第二个数据集。 数据处理电路可操作来处理处理数据集,并且选择器电路可操作以在第一数据集和组合数据集之间进行选择作为处理数据集。 组合电路可操作以将第一数据集与至少第二数据集组合以产生组合数据集。