Method and apparatus to compensate for servo wedge rotational offset after a head switch
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United States of America Patent
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May 23, 2000
Grant Date -
N/A
app pub date -
Nov 18, 1997
filing date -
Nov 18, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A disk drive controller having a microprocessor and a sampled signal head positioning system measures and stores the relative rotational offsets between heads arranged in a stacked relationship and respective servo wedges on different disk surfaces. The offsets are stored in a table and subsequently applied to a servo wedge detection circuit to ensure that a next sequential wedge is detected after a head switch.
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Cited Art Landscape
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