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公开(公告)号：US20240290348A1
公开(公告)日：2024-08-29
申请号：US18232031
申请日：2023-08-09
发明人： Xianghui Xiao , Noureddine Kermiche
CPC分类号： G11B5/5586 , G11B20/24
摘要： Various aspects are directed to a data storage device comprising one or more disks, an actuator mechanism configured to position a selected head among one or more heads proximate to a corresponding disk surface among the one or more disks, and one or more processing devices. The one or more processing devices are configured to detect repeatable runout (RRO) noise components from a measurement of fly height of the selected head above one or more sectors of a fly height measurement track, and remove the detected RRO noise components from one or more per-sector readback signal measurements.
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公开(公告)号：US08891193B1
公开(公告)日：2014-11-18
申请号：US13890937
申请日：2013-05-09
CPC分类号： G11B5/6029 , G11B5/6076
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks. The head comprises a touchdown element operable to generate a touchdown signal. The touchdown signal is amplified by a gain to generate an amplified touchdown signal, and a touchdown event is detected by comparing the amplified touchdown signal to a threshold. During a calibration operation, the gain is adjusted and the threshold is adjusted until the amplified touchdown signal does not exceed the threshold. During a normal operation, the touchdown event is detected based at least partly on the adjusted gain and the adjusted threshold.
摘要翻译： 公开了一种磁盘驱动器，包括在包括多个轨道的盘上致动的磁头。 头部包括可触发触发信号的触地元件。 触地信号被增益放大以产生放大的触地信号，并且通过将放大的触地降信号与阈值进行比较来检测触地事件。 在校准操作期间，调整增益并调整阈值，直到放大的触地信号不超过阈值。 在正常操作期间，至少部分地基于经调整的增益和调整的阈值来检测触地事件。
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