| 摘要 |
<p>A magneto-optical disk apparatus (50) includes a discrimination circuit (15) for controlling an optical head (2) and a magnetic head (3) to record a known reference signal (RF) in a magneto-optical disk (1), supplying a power setting signal (PW) to a laser driving circuit (4) to set a power of a laser beam source (20) to a predetermined level, controlling the optical head (2) and the magnetic head (3) to reproduce the known reference signal (RF) from the magneto-optical disk 1 with the set power, comparing the reproduced signal with the known reference signal (RF), and determining the set power as an optimal power if the reproduced signal is identical to the known reference signal (RF). As a result, a laser power required for magnetic domain enlargement/reproduction can be optimized. <IMAGE></p> |
