Method for adjusting a control parameter and optical disc drive server system using the same
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United States of America Patent
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Dec 25, 2007
Grant Date -
Jan 20, 2005
app pub date -
Jul 16, 2004
filing date -
Jul 18, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for adjusting a control parameter is adopted in an optical disc drive server system, which has a compensator, a control loop and a parameter regulator. The control loop includes an optical pickup and outputs a first tracking error signal/focus error signal. The compensator adjusts the first tracking error signal/focus error signal to obtain a compensated signal for driving the optical pickup to read/write the optical disc. The parameter regulator generates a first sinusoidal signal to be inputted to the control loop, which amplifies the first sinusoidal signal to obtain a second sinusoidal signal. The parameter regulator filters the second sinusoidal signal and calculates a relationship between the first sinusoidal signal and the second sinusoidal signal to obtain a control parameter. The parameter regulator adjusts the compensator to output the compensated signal according to the control parameter.
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