Method and apparatus for tracking servo system
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United States of America Patent
Stats
-
Jan 11, 2005
Grant Date -
Sep 19, 2002
app pub date -
Aug 17, 2001
filing date -
Mar 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a method for guiding a pick-up head to follow an information track. The method comprises the steps of sensing and sending notification of displacement between the pick-up head and the center of the information track, generating a first correction directly proportional to the displacement, generating from the first correction a second correction non-proportional to the displacement, generating a third correction from an amplified tracking error signal and generating a driving force proportional to the sum of the second and third corrections, driving the pick-up head to follow the information track.
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