| 摘要 |
<p>This invention relates to an optical disk recording and reproducing apparatus for recording a predetermined signal on and/or reproducing the same from a writable disk (51) which is rotated at the constant linear velocity by using the laser from a laser source (LD). In this case, upon reproducing the above-described signal, if a signal recorded on the inner periphery of the disk (51) is accessed, during the period from this addressing up to the time when the linear velocity at the inner periphery of the disk (51) becomes constant, on the basis of a spindle lock signal, the beam amount of the laser from the laser source (LD) and irradiating the disk (51) is decreased to thereby prevent useless data from being rewritten in the disk (51</p> |
