| 摘要 |
Technology is provided allowing recording to be always conducted at the optimum laser power, regardless of the recording location on the disk. A target reflected light level (target B level) at which the optimum laser power is obtained is found by conducting test writing in a test write area, recording is started at an angular velocity corresponding to a linear velocity in the vicinity of the innermost periphery, and the rotation frequency is increased to a target rotation frequency, while controlling the laser power so as to obtain the target B level. Furthermore, the relation between the linear velocity and optimum laser power obtained at this time is recorded. The laser power may be also controlled so as to obtain the preset beta value, instead of controlling the laser power so as to obtain the target B level.
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