Head positioning control system for use in a disk storage drive
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United States of America Patent
Stats
-
Jan 16, 2001
Grant Date -
N/A
app pub date -
May 29, 1998
filing date -
Dec 26, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A servo system uses a disk on which two pairs of burst data items A and B and burst data items C and D are prerecorded, and the servo system performs positioning control for positioning a head within a range of a track on a disk. The servo system sets a range of a track to be divided into a first area regarding the track center as a reference position, a second area regarding a boundary position between tracks as a reference position, and a third area regarding a middle position between the reference positions, as a reference position. In the first area, the servo system calculates position information of the head by a first calculation formula using the burst data items A and B. In the second area, the servo system calculates position information of the head by a second calculation formula using the burst data items C and D. Further, in the third area, the servo system calculates an average value of calculation results from the first and second calculation formulas, as position information.
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Family
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Cited Art Landscape
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