Title:
レーザパワー制御装置と情報記録装置と光ディスク装置とレーザ光源駆動電流値決定方法と情報記録方法と光ディスク記録方法
Document Type and Number:
Japanese Patent JP4145713
Kind Code:
B2
Abstract:
A laser power control device controls a light-emitting power of a laser light beam emitted from a laser power source that emits a laser light beam of first power intensity, a laser light beam of second power intensity greater than the first power intensity, and a laser light beam of third power intensity greater than the second power intensity to record information on a recording medium. The laser power control device includes a characteristic obtaining mechanism that obtains a characteristic of the laser power source by causing the laser power source to emit the laser light beam of the second power intensity before recording information on the recording medium, and a current value determining mechanism that determines a value of current required to be supplied to the laser power source to emit the laser light beam of the third power intensity based on the characteristic of the laser power source.
Inventors:
Akihiro Kanno
Application Number:
JP2003140318A
Publication Date:
September 03, 2008
Filing Date:
May 19, 2003
Export Citation:
Assignee:
株式会社リコー
International Classes:
G11B7/0045; G11B7/125; G11B7/1267
Domestic Patent References:
| JP2003142770A | ||||
| JP2001229561A |
Attorney, Agent or Firm:
Kei Osawa