| 摘要 |
A device for correcting optical path deviation of an optical pickup in an optical recording system includes a push-pull signal generator for generating a push-pull signal while the optical pickup is operated in a focusing and non-track-locking state, a low-pass filter module for generating a direct current (DC) level error signal from the push-pull signal, and a combiner for generating a calibrating servo signal based on the DC level error signal and a servo control signal from a servo controller of the optical recording system and for applying the calibrating servo signal to a servo mechanism of the optical recording system so as to adjust position of an objective lens of the optical pickup in order to maintain the DC level of the push-pull signal at an ideal level.
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