Method to avoid contact between the head and disk protrusions
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United States of America Patent
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Jun 3, 2008
Grant Date -
Oct 12, 2006
app pub date -
Apr 11, 2005
filing date -
Apr 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A hard disk drive with a controller that controls a movement of a head relative to a disk. The controller causes the head to avoid a defect on the disk during a seek routine. The location of the defect is previously identified and stored in the drive. The drive may create a 'no-fly' zone about the defect to insure no contact with the head. The no-fly zone can be avoided by delaying the start of a seek routine, varying the displacement profile of the head or other techniques.
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