| 摘要 |
<p>A recording power row P(i) is selected and a signal is recorded in a recording test region of an optical disk, while shifting a recording power, to detect a reproduced signal amplitude row m(i) that corresponds to the recording power row P(i). The relation of the recording power row P(i) and the row of multiplication products P(i) x m(i) is linearly approximated and the intersection of the linear approximation straight line and the recording power axis is computationally determined as recording threshold power P thr , for at least three recording power rows P j (i) that are centered at P f (j) in the recording power row P(i) within a defined range. Then, the recording power P t (j) is computed as a multiplication product of the recording threshold power P thr (j) and a factor K contained in the disk information, for each recording power row P j (i). Finally, the optimum recording power P wcpt is computationally determined according to the at least three recording powers P t (j).</p> |
