Disk playback apparatus and disk acceleratiion adjusting method
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United States of America Patent
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N/A
Issued Date -
Sep 29, 2005
app pub date -
Mar 18, 2005
filing date -
Mar 26, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
When servo lock cannot be achieved because the number of disk revolutions cannot reach the vicinity of its regular number of disk revolutions, a table value is increased to prolong the disk acceleration time. In case of success in servo lock, the table value is reduced to shorten the disk acceleration time. Accordingly, it is possible to set the disk acceleration time optimized in accordance with a variation of torque in the disk motor. As a result, it is possible to save an unnecessary current which would be otherwise consumed till disk servo lock is achieved, so that it is possible to suppress the power consumption.
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