Method and system for time-shift based rotational vibration sensing in disk drives
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United States of America Patent
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Sep 20, 2005
Grant Date -
Nov 27, 2003
app pub date -
May 24, 2002
filing date -
May 24, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a pattern on the rotating disk, and analyzing a time interval between adjacent ones of the reference bits.
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