| 摘要 |
<p>A most suitable power is determined in consideration of the recorded state of the substrate track recorded by test recording prior to the recording of user data. The test recording of a signal is performed by using an upper limit which is a second recording power higher than a first recording power and a lower limit which is a third recording power lower than the first recording power, and the recorded signal is reproduced. If a predetermined quality of reproduced signal is achieved, a recording power higher than the third one and lower than the second one is determined. Three or more tracks are continuously recorded with a preset recording power. If a predetermined quality of reproduced signal is achieved, the recording power is made the recording power of when data is recorded.</p> |
