Optical disk device

Details Optical disk device Optical disk device

2005-10-25

2005-10-25

Young, W. R. (Department: 2653)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S053270, C369S116000, C369S053220

Reexamination Certificate

active

06958962

ABSTRACT:
The present invention provides an optical disk device which optimizes recording power level used when recording data. A controller records test data in a test region of an optical disk and evaluates reproduced signal quality of the test data, so as to determine an optimum recording power level Po (OPC). Subsequently, the controller uses reflected light intensity level B obtained when recording data to make adjustments to the optimum recording power level Po, thereby obtaining recording power level P. The recording power level P is adjusted such that Bm/Pn=constant, where m and n are positive rational numbers satisfying m<n. When m=1, the value of n is greater than or equal to 1.5 and no larger than 10.

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