Optical disk system

摘要

It is directed to provide a quick-response optical disk system. Signals from photodiodes ( 1b1 and 1b2 ) are converted through a differential amplifier ( 2 ) to a tracking error signal TE that is further converted to a tracking drive signal TRD and a slide driving signal SLD by a tracking control circuit ( 3 ). The signal TRD through a driving circuit ( 5 ) effects a tracking actuator ( 1a ). The signal TRD is also converted to a signal TRDFS by a low-pass filter ( 10 ). The signals SLD and TRDFS are sent through a switch ( 11 ) to a microcomputer ( 6 ) which drives a slide motor ( 8 ) through a slide driving circuit ( 7 ) according to the signals SLD and TRDFS. <IMAGE>