Methods and apparatuses for measuring VCM BEMF at a VCM control update rate
    11.
    发明授权
    Methods and apparatuses for measuring VCM BEMF at a VCM control update rate 有权
    用VCM控制更新速率测量VCM BEMF的方法和装置

    公开(公告)号:US07728539B2

    公开(公告)日:2010-06-01

    申请号:US11750839

    申请日:2007-05-18

    IPC分类号: H02P6/18

    摘要: Devices and methods for performing dynamic sampling of a back electromotive force (BEMF) measurement are provided. A device has hardware, including a voice coil motor (VCM) for receiving a VCM command signal and a correction circuit, for obtaining the VCM command signal and a coil voltage measurement from the hardware, where the correction circuit removes a transient voltage measurement due to a change in the VCM command signal from the coil voltage measurement and outputs an estimated BEMF measurement.

    摘要翻译: 提供了用于执行反电动势(BEMF)测量的动态采样的装置和方法。 一种设备具有硬件,包括用于接收VCM命令信号的音圈电机(VCM)和用于从硬件获得VCM命令信号和线圈电压测量的校正电路,其中校正电路去除由于 来自线圈电压测量的VCM命令信号的变化并输出估计的BEMF测量值。

    Method of self-servo writing in a disk drive using multiple timing windows
    13.
    发明授权
    Method of self-servo writing in a disk drive using multiple timing windows 有权
    使用多个定时窗口在磁盘驱动器中自写入的方法

    公开(公告)号:US07375918B1

    公开(公告)日:2008-05-20

    申请号:US11413416

    申请日:2006-04-27

    IPC分类号: G11B5/596

    摘要: A disk drive includes a head and a disk, spiral patterns are located on the disk, and the disk drive self-writes servo patterns on the disk using the spiral patterns as a reference for servoing the head. In an embodiment, the disk drive uses preliminary servo patterns to determine repeatable runout of the spiral patterns. In another embodiment, the disk drive reads each spiral pattern with multiple timing windows.

    摘要翻译: 磁盘驱动器包括磁头和磁盘,螺旋图案位于磁盘上,磁盘驱动器使用螺旋图案自动写入磁盘上的伺服模式作为伺服磁头的参考。 在一个实施例中,磁盘驱动器使用初步伺服模式来确定螺旋图案的可重复跳动。 在另一个实施例中,磁盘驱动器以多个定时窗口读取每个螺旋图案。

    Disk-synchronized loading/unloading of magnetic head
    14.
    发明授权
    Disk-synchronized loading/unloading of magnetic head 有权
    磁头同步加载/卸载磁头

    公开(公告)号:US08767337B2

    公开(公告)日:2014-07-01

    申请号:US11736441

    申请日:2007-04-17

    IPC分类号: G11B5/596

    CPC分类号: G11B21/12

    摘要: Systems and methods from loading/unloading a data head for a disk drive provide for more efficient use of disk space. A method of loading/unloading a data head for a disk drive comprises determining a disk phase of a spinning disk arrangement, determining a loading/unloading position based on the disk phase, and loading or unloading the data head on or from, respectively, the spinning disk arrangement based on the determined disk phase. The determining a disk phase may be based on zero crossing of voltages for a three-phase motor associated with the spinning disk arrangement.

    摘要翻译: 从磁盘驱动器加载/卸载数据头的系统和方法可以更有效地使用磁盘空间。 一种用于加载/卸载用于磁盘驱动器的数据头的方法包括确定旋转磁盘布置的磁盘相位,基于磁盘相位确定加载/卸载位置,以及分别在或从其分别加载或卸载数据磁头 基于确定的磁盘相位旋转磁盘布置。 确定盘相位可以基于与旋转盘装置相关联的三相电动机的电压的过零点。

    Self-servo writing using staged patterning
    15.
    发明授权
    Self-servo writing using staged patterning 有权
    自动伺服写入使用分段图案

    公开(公告)号:US07619846B2

    公开(公告)日:2009-11-17

    申请号:US11750767

    申请日:2007-05-18

    IPC分类号: G11B21/02

    CPC分类号: G11B5/59644

    摘要: An apparatus and method for servo writing are disclosed. The method includes writing of first servo data to a medium, detecting a velocity integrated position of the first servo data, and writing second servo data in relation to the detected position of the first servo data.

    摘要翻译: 公开了一种用于伺服写入的装置和方法。 该方法包括将第一伺服数据写入介质,检测第一伺服数据的速度积分位置,以及相对于检测到的第一伺服数据的位置写入第二伺服数据。

    SELF-SERVO WRITING USING STAGED PATTERNING
    17.
    发明申请
    SELF-SERVO WRITING USING STAGED PATTERNING 有权
    自助写字板使用分层图案

    公开(公告)号:US20080013202A1

    公开(公告)日:2008-01-17

    申请号:US11750767

    申请日:2007-05-18

    IPC分类号: G11B21/02

    CPC分类号: G11B5/59644

    摘要: Preferred embodiments of the present invention are generally directed to the writing of first servo data to a medium, detecting a velocity integrated position of said first servo data, and writing second servo data in relation to the detected position of the first servo data.

    摘要翻译: 本发明的优选实施例一般涉及将第一伺服数据写入介质,检测所述第一伺服数据的速度积分位置,以及相对于检测到的第一伺服数据的位置写入第二伺服数据。

    METHODS AND APPARATUSES FOR MEASURING VCM BEMF AT A VCM CONTROL UPDATE RATE
    18.
    发明申请
    METHODS AND APPARATUSES FOR MEASURING VCM BEMF AT A VCM CONTROL UPDATE RATE 有权
    用于在VCM控制更新速率下测量VCM BEMF的方法和装置

    公开(公告)号:US20080007271A1

    公开(公告)日:2008-01-10

    申请号:US11750839

    申请日:2007-05-18

    IPC分类号: G01R35/00 G01R27/02

    摘要: Devices and methods for performing dynamic sampling of a back electromotive force (BEMF) measurement are provided. A device has hardware, including a voice coil motor (VCM) for receiving a VCM command signal and a correction circuit, for obtaining the VCM command signal and a coil voltage measurement from the hardware, where the correction circuit removes a transient voltage measurement due to a change in the VCM command signal from the coil voltage measurement and outputs an estimated BEMF measurement.

    摘要翻译: 提供了用于执行反电动势(BEMF)测量的动态采样的装置和方法。 一种设备具有硬件,包括用于接收VCM命令信号的音圈电机(VCM)和用于从硬件获得VCM命令信号和线圈电压测量的校正电路,其中校正电路去除由于 来自线圈电压测量的VCM命令信号的变化并输出估计的BEMF测量值。