| 摘要 |
An apparatus for reading an optical disk having tangentially extending tracks (Q1, Q2), including: a driving device for moving at least one light spot (A, B1, B2); a first circuit means for producing a tracking error signal (S1) which indicates a deviation of the light spot (A) from one of the tracks (Q1, Q2); and a second circuit means (7) for producing acceleration and deceleration signals (S6), the driving device being controlled to affect a track jump of the light spot (A) in accordance with the acceleration and deceleration signals (S6). The second circuit means (7) produces the acceleration signal when a track jump is to be initiated, and produces the deceleration signal when the ratio of the level of the tracking error signal (S1) to the peak value (S3) of the tracking error signal becomes a predetermined value. |
