| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording method for performing recording by a drive coping with CAV capable of randomly accessing and recording at high speed to a phase change type optical recording medium capable of recording by the drive coping with a low linear speed of low peak power and also by the drive coping with a high linear speed. <P>SOLUTION: In the recording method of using the linear speed within the range of the lowest linear speed and the highest linear speed capable of recording, controlling irradiation power by three values of (Pp), (Pe) and (Pb), alternately impressing (Pp) and (Pb) in a pulse shape when forming a mark, and changing the pulse impression time by Tw corresponding to the linear speed changing from the inner peripheral part to the outer peripheral part; the reference of the peak power impression start time of a leading part is denoted as (a); the reference of the bias power impression end time of the last part is denoted as b, and for the mark of at least two lengths to be formed for each linear speed, the time (dTtop) until starting the impression of the peak power of the leading part to the reference (a) is set to (k/16) times of Tw (k is an integer). <P>COPYRIGHT: (C)2007,JPO&INPIT |
