Focus servo system of compact disc player for automobile

摘要

The present invention relates to a focus servo apparatus for an automotive compact disk player, and more particularly to a focus servo apparatus for detecting a focus error of a reproduced signal picked up and output from an optical pickup unit (10) A compensation unit 30 for detecting and generating a compensation signal for compensating for a focus error provided from the focus error generating unit 20, And a focus actuator unit 50 driven by the driving signal of the driving unit 30 to drive the optical pickup unit 10 in the upward or downward direction, And a vibration compensation unit (60) for generating a compensation signal for compensating for a focus error due to vibration caused by the running of the automobile among the focus error signal provided from the generator (20) It is configured.;Therefore, the present invention has an effect that the focus servo can be performed without being affected by the focus error due to the influence of the vibration due to the running of the automobile.