Methods and apparatus for managing write inhibit in response to a predictive metric
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United States of America Patent
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Jul 15, 2008
Grant Date -
N/A
app pub date -
May 8, 2006
filing date -
Oct 7, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods of controlling reading/writing by a read/write head of a disk drive include generating a position error signal indicative of a displacement of the read/write head from a desired radial location on a surface of a data storage disk. A control signal for moving the read/write head to the desired location is calculated responsive to the position error signal. Writing by the read/write head is inhibited responsive to the control signal exceeding a control signal threshold value. A disk drive includes a controller configured to generate a position error signal indicative of a displacement of a read/write head from a desired location on a surface of a disk, and to generate a control signal for moving the read/write head to the desired location. The controller is further configured to inhibit writing by the read/write head responsive to a predictive metric that is predictive of the position error signal exceeding a threshold.
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