| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem with a conventional optical disc that when a power calibration area is used up, the optimum power of a light beam is not detected. <P>SOLUTION: When the power calibration area is used up, the optimum power of a light beam is detected by performing power calibration in an outer power calibration area and recording is continued by using the light beam of the detected optimum power. <P>COPYRIGHT: (C)2010,JPO&INPIT |
