Tracking and focus servo system with head load
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United States of America Patent
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Aug 16, 2005
Issued Date -
N/A
app pub date -
Sep 10, 2001
filing date -
Jan 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A head load algorithm for an optical disk drive is presented. On startup, the optical media can be spun up. Then an optical pick-up unit can be positioned at an extreme position, for example at the inner diameter, and focus can be closed. The optical pick-up unit then can be incrementally moved away from the extreme position while the tracking error signal is monitored to locate an area of the optical media with tracks. Once the area is located, a tracking servo system can close on one of the tracks.
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