发明名称 A TRACKING SYSTEM IN AN OPTICAL RECORDING/REPRODUCING DEVICE
摘要 The present invention relates to an optical recording apparatus and method characterized by employing a recording medium in which pregrooves or pits for guiding a light spot to-be-projected along a track are provided, constructing a tracking actuator so that the light spot to be projected on said recording medium may cross the pregrooves, tracks or pits aslant, detecting a tracking signal with higher-frequency offset components reduced through a predetermined operation of output signals of a quadrantal detector which receives reflected light based on the light spot projected on said recording medium, correcting the tracking signals on the basis of an error signal which is obtained from the reflected light from said recording medium and recording or reproducing information while said tracking actuator is being driven for a tracking control on the basis of the corrected tracking signal.
申请公布号 AU7054091(A) 申请公布日期 1991.06.26
申请号 AU19910070540 申请日期 1990.12.04
申请人 DEUTSCHE THOMSON-BRANDT GMBH 发明人 YASUAKI MORIMOTO;SEIJI YONEZAWA
分类号 G11B7/09 主分类号 G11B7/09
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