Head positioning control system for use in a disk drive using different target velocity data for read and write seeks
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United States of America Patent
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Dec 14, 1999
Grant Date -
N/A
app pub date -
Aug 26, 1997
filing date -
Dec 27, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A head positioning control system for use in a HDD and arranged to position a head in a target position has different seek control systems arranged to be operated respectively when a read access is made and when a write access is made. When the read access is made, the system using target velocity data for controlling read seek executes read seek control. When the write access is made, the system using target velocity data for controlling write seek executes write seek control. The read seek control allows the head to be moved to the target position at relatively high velocity. The write seek control allows the head to relatively stably and accurately reach the target position.
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