| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk and a control method of the optical disk which can effectively cool the inside of a device without adding many component parts. <P>SOLUTION: An optical disk 1 for irradiating an optical disk D with a laser beam includes a motor 2 for rotating the optical disk D and a control unit 7 for increasing/decreasing a rotational speed of the motor 2 based on a driving current of a laser element for irradiating the optical disk D with a laser beam and a temperature change of the laser element. <P>COPYRIGHT: (C)2012,JPO&INPIT |
