Optical recorder and laser power control method

Details Optical recorder and laser power control method Optical recorder and laser power control method

2005-11-22

2005-11-22

Klimowicz, William (Department: 2652)

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

C369S053220

Reexamination Certificate

active

06967914

ABSTRACT:
An optical recording apparatus obtains the most appropriate recording laser power state in real time according to an environmental mark-generation condition. When data is recorded (mark is generated) by emitting pulse-train-manner laser outputs to an organic-pigment recording medium, a first signal value corresponding to a first pulse in the pulse-train-manner laser outputs and a second signal value corresponding to second and subsequent pulses in the pulse-train-manner laser outputs are detected as a reflected-light information signal; the ratio thereof is obtained; and the obtained ratio and a reference ratio are used to generate a laser-power compensation signal to control the power of the laser outputs.

REFERENCES:
patent: 5790482 (1998-08-01), Saga et al.
patent: 6657935 (2003-12-01), Eguchi et al.
patent: 6678228 (2004-01-01), Kando et al.
patent: 2000-298834 (2000-10-01), None
patent: 2002-109739 (2002-04-01), None

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