| 摘要 |
<p>An optical disk drive includes an optical pickup (10) that includes at least one optical element (4) and a group of actuators (5, 6) supporting the optical element such that the optical element is movable in a plurality of moving directions and reads or writes a signal from/onto an optical disk (1) through the optical element, and a drive circuit (30) that generates a plurality of driving signals corresponding to the plurality of moving directions according to a PWM method every PWM period to drive the actuators on the basis of the generated driving signals. The drive circuit generates a plurality of driving signals so that the start of the PWM period of one driving signal as a reference is different from that of at least another driving signal.</p> |
