Optical disk recording apparatus with optimum power control

Details Optical disk recording apparatus with optimum power control Optical disk recording apparatus with optimum power control

2006-09-12

2006-09-12

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

Reexamination Certificate

active

07106673

ABSTRACT:
An optical disk recording apparatus capable of recording data in an optical disk using an optimized recording power is provided. Data formed beforehand in an embossed part of the optical disk are reproduced with a predetermined reproducing power, using an optical pick up unit, and an evaluation index is determined by an evaluation index determining part of a control unit from an envelope of the signal which is produced with the reproducing power. Test data are recorded in a test area of the optical disk by varying the recording power and the test data thus recorded are reproduced with the reproducing power to determine the evaluation index. A control unit sets the evaluation index obtained from the embossed part as a target evaluation index. Desired data are recorded with the recording power corresponding to the target evaluation index.

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