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公开(公告)号：US08238051B2
公开(公告)日：2012-08-07
申请号：US12633518
申请日：2009-12-08
IPC分类号： G11B5/09
CPC分类号： G11B19/28 , G11B5/6011 , G11B19/042 , G11B19/043 , G11B19/06 , G11B21/12 , G11B27/36 , G11B2220/2516
摘要： Real time monitoring inconsistent operations in a hard disk drive, wherein the hard disk drive comprises a magnetic disk, a controller and a channel clock. A timing signal from the channel clock is measured in real time in the controller. Time intervals between sector identifier marks of the magnetic disk are detected using the timing signal from the channel clock during reading and writing operations of the hard disk drive in the controller. An inconsistency in the drive operations is detected in the controller based on changes in the time intervals between the sector identifier marks is detected during operation of the hard disk drive. The detection of the inconsistency in the drive operations is responded to.
摘要翻译： 实时监控硬盘驱动器中的不一致操作，其中硬盘驱动器包括磁盘，控制器和通道时钟。 来自通道时钟的定时信号在控制器中实时测量。 在控制器中的硬盘驱动器的读取和写入操作期间，使用来自通道时钟的定时信号来检测磁盘的扇区标识符标记之间的时间间隔。 基于在硬盘驱动器的操作期间检测到的扇区标识符标记之间的时间间隔的变化，在控制器中检测到驱动器操作的不一致。 对驱动器操作不一致的检测作出回应。
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公开(公告)号：US07199960B1
公开(公告)日：2007-04-03
申请号：US10317016
申请日：2002-12-11
申请人： Erhard T. Schreck , Robert E. Eaton
发明人： Erhard T. Schreck , Robert E. Eaton
IPC分类号： G11B21/02
CPC分类号： G11B5/6017 , G11B21/21
摘要： A disk drive includes a disk for storing information, a head with a transducer that writes data to and reads data from the disk, and an AC power source. The head is suspended adjacent to the disk and a flying height gap exists at the head/disk interface. The AC power source generates an AC exciter signal across the flying height gap that discharges electrostatic charge at the head/disk interface. The head/disk capacitance can be measured based on the AC exciter signal to sense the flying height. The AC exciter signal can also alter an attraction force between the head and the disk and thus control flying height. The AC exciter signal can also be based on a flying height signal representative of the head/disk capacitance and thus the flying height.
摘要翻译： 磁盘驱动器包括用于存储信息的磁盘，具有向磁盘写入数据和从盘读取数据的传感器的磁头以及AC电源。 磁头与磁盘相邻地悬挂，并且在磁头/磁盘接口处存在飞高高度的间隙。 交流电源在飞越高度间隙产生交流励磁信号，从而在磁头/磁盘接口处放电静电。 可以基于AC激励器信号来测量头/盘电容以感测飞行高度。 交流励磁机信号也可以改变磁头和磁盘之间的吸引力，从而控制飞行高度。 交流励磁信号也可以基于代表磁头/磁盘电容的飞行高度信号，从而基于飞行高度。
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公开(公告)号：US07808734B2
公开(公告)日：2010-10-05
申请号：US11894360
申请日：2007-08-20
IPC分类号： G11B27/36
CPC分类号： G11B5/607 , G11B5/6029 , G11B5/6058
摘要： A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. The fly height is modulated with a predetermined modulation frequency with a fly height control device. A read-back signal is read from the recording media with the magnetic transducer. A change of the read back signal is measured that results from modulating the fly height. A fault signal is provided in response to the change crossing a threshold.
摘要翻译： 用于监测磁换能器的飞行高度的方法包括使磁换能器与记录介质分离的距离飞行。 用飞行高度控制装置以预定的调制频率调制飞行高度。 使用磁换能器从记录介质读取回读信号。 通过调节飞行高度而测量回读信号的变化。 响应于越过阈值的变化提供故障信号。
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公开(公告)号：US20110134557A1
公开(公告)日：2011-06-09
申请号：US12633518
申请日：2009-12-08
IPC分类号： G11B27/36
CPC分类号： G11B19/28 , G11B5/6011 , G11B19/042 , G11B19/043 , G11B19/06 , G11B21/12 , G11B27/36 , G11B2220/2516
摘要： Real time monitoring inconsistent operations in a hard disk drive, wherein the hard disk drive comprises a magnetic disk, a controller and a channel clock. A timing signal from the channel clock is measured in real time in the controller. Time intervals between sector identifier marks of the magnetic disk are detected using the timing signal from the channel clock during reading and writing operations of the hard disk drive in the controller. An inconsistency in the drive operations is detected in the controller based on changes in the time intervals between the sector identifier marks is detected during operation of the hard disk drive. The detection of the inconsistency in the drive operations is responded to.
摘要翻译： 实时监控硬盘驱动器中的不一致操作，其中硬盘驱动器包括磁盘，控制器和通道时钟。 来自通道时钟的定时信号在控制器中实时测量。 在控制器中的硬盘驱动器的读取和写入操作期间，使用来自通道时钟的定时信号来检测磁盘的扇区标识符标记之间的时间间隔。 基于在硬盘驱动器的操作期间检测到的扇区标识符标记之间的时间间隔的变化，在控制器中检测到驱动器操作的不一致。 对驱动器操作不一致的检测作出回应。
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公开(公告)号：US20090052080A1
公开(公告)日：2009-02-26
申请号：US11894360
申请日：2007-08-20
IPC分类号： G11B21/02
CPC分类号： G11B5/607 , G11B5/6029 , G11B5/6058
摘要： A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. The fly height is modulated with a predetermined modulation frequency with a fly height control device. A read-back signal is read from the recording media with the magnetic transducer. A change of the read back signal is measured that results from modulating the fly height. A fault signal is provided in response to the change crossing a threshold.
摘要翻译： 用于监测磁换能器的飞行高度的方法包括使磁换能器与记录介质分离的距离飞行。 用飞行高度控制装置以预定的调制频率调制飞行高度。 使用磁换能器从记录介质读取回读信号。 通过调节飞行高度而测量回读信号的变化。 响应于越过阈值的变化提供故障信号。
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公开(公告)号：US07697223B2
公开(公告)日：2010-04-13
申请号：US11894317
申请日：2007-08-20
IPC分类号： G11B27/36
CPC分类号： G11B5/6029 , G11B5/6058 , G11B5/607
摘要： A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. A read-back signal is read with the magnetic transducer from the recording media. The read-back signal is rectified to produce a rectified signal. The rectified signal is filtered thereby providing a filtered signal. A fault signal is provided in response to the filtered signal exceeding a threshold.
摘要翻译： 用于监测磁换能器的飞行高度的方法包括使磁换能器与记录介质分离的距离飞行。 从记录媒体用磁换能器读取回读信号。 读回信号被整流以产生整流信号。 经整流的信号被滤波，从而提供滤波信号。 响应于滤波信号超过阈值提供故障信号。
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公开(公告)号：US20090052091A1
公开(公告)日：2009-02-26
申请号：US11894317
申请日：2007-08-20
IPC分类号： G11B21/22
CPC分类号： G11B5/6029 , G11B5/6058 , G11B5/607
摘要： A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. A read-back signal is read with the magnetic transducer from the recording media. The read-back signal is rectified to produce a rectified signal. The rectified signal is filtered thereby providing a filtered signal. A fault signal is provided in response to the filtered signal exceeding a threshold.
摘要翻译： 用于监测磁换能器的飞行高度的方法包括使磁换能器与记录介质分离的距离飞行。 从记录媒体用磁换能器读取回读信号。 读回信号被整流以产生整流信号。 经整流的信号被滤波，从而提供滤波信号。 响应于滤波信号超过阈值提供故障信号。
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