| 摘要 |
A method is designed for controlling a power of a laser beam irradiated onto a track of an optical disc for recording of data at a given linear velocity. The method is carried out by the steps of performing test recording into a predetermined area of the optical disc before actual recording of data, acquiring a reproduction signal representative of a result of the test recording from the predetermined area of the optical disc, acquiring velocity-parameter characteristic information indicative of the relationship between plural levels of the linear velocity and target values of a parameter representative of a quality of the recording, deriving velocity-power characteristic information indicative of the relationship between the levels of the linear velocity and optimal values of the power based on both of the reproduction signal representative of the result of the test recording and the velocity-parameter characteristic information, and controlling the power of the laser beam irradiated onto the optical disc in accordance with the velocity-power characteristic information at the time of the actual recording.
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