Title:
METHOD FOR RECORDING OPTICAL INFORMATION AND DEVICE THEREOF
Document Type and Number:
Japanese Patent JP3734621
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect the form state of a record mark during recording, and to perform recording, controlling to rectify a drift of an optimal recording power caused by the fluctuations of a power of a light source, variations in a tilt, sensitivity of a recording medium, etc., without depending on the characteristics, etc., of the recording medium.
SOLUTION: This device detects the form state of a record mark M during recording by detecting a change in a received photo signal Pd in a certain predetermined section from t11, immediately after having controlled an output power of a light source to a bottom power Pb' by which the record mark M is not formed. Even if the drift of an optimum record power is caused by the variations in the output of the light source, a tilt of a recording medium, etc., it is possible to perform recording by always controlling the output power of the light source to an optimum recording power in that state according to a detection result.
Inventors:
Shigehiro Masui
Kenya Yokoi
Kenya Yokoi
Application Number:
JP18919098A
Publication Date:
January 11, 2006
Filing Date:
July 03, 1998
Export Citation:
Assignee:
株式会社リコー
International Classes:
G11B7/00; G11B7/125; G11B7/0045; G11B7/126; (IPC1-7): G11B7/00; G11B7/125
Domestic Patent References:
| JP5151575A | ||||
| JP6103576A |
Attorney, Agent or Firm:
Tadahiko Ito