Invention Grant
US08824262B1 Disk drive accounting for sinusoidal offset between heads when executing a rotational position optimization algorithm
有权
当执行旋转位置优化算法时，磁盘驱动器会计算磁头之间的正弦偏移
- Patent Title: Disk drive accounting for sinusoidal offset between heads when executing a rotational position optimization algorithm
- Patent Title (中): 当执行旋转位置优化算法时，磁盘驱动器会计算磁头之间的正弦偏移
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Application No.: US14051604Application Date: 2013-10-11
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Publication No.: US08824262B1Publication Date: 2014-09-02
- Inventor: Kexiu Liu , Orhan Beker
- Applicant: Western Digitial Technologies, Inc.
- Applicant Address: US CA Irvine
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA Irvine
- Main IPC: G11B15/12
- IPC: G11B15/12 ; G11B5/596
Abstract:
A disk drive is disclosed wherein a radial offset is measured between a first head and a second head at a plurality of points along a circumference of a corresponding first and second disk surface to generate a first plurality of radial offsets. A first radial offset is determined and a second radial offset is determined based on the first plurality of radial offsets, wherein the first radial offset corresponds to approximately a maximum in the first plurality of radial offsets and the second radial offset corresponds to approximately a minimum in the first plurality of radial offsets. A plurality of access commands are stored in a command queue, and a rotational position optimization (RPO) algorithm is executed to select a next access command to execute from the command queue, wherein the RPO algorithm is responsive to the first and second radial offsets.
Information query
IPC分类:
