Optical disc device

Details Optical disc device Optical disc device

2006-02-01

2010-02-02

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

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

Mechanism control by the control signal

C369S119000

Reexamination Certificate

active

07656761

ABSTRACT:
An optical disc device includes a recording power acquiring unit that finds an optimum recording power when data is written in a data area by writing data for calibration in a power calibration area, and a data writing unit that writes data in a data area to be written by using an optimum recording power found by the recording power acquiring unit. A method for acquiring an optimum recording power used by the recording power acquiring unit when an area to be written is a not-yet-recorded area is different from a method for an already recorded area. When an area to be written is a not-yet-recorded area, the recording power acquiring unit finds an optimum recording power. When an area to be written is an already recorded area, the recording power acquiring unit writes preliminary data in a power calibration area and finds an optimum recording power.

REFERENCES:
patent: 2006/0153035 (2006-07-01), Eguchi et al.
patent: 2000-195053 (2000-07-01), None
patent: A-2003-099933 (2003-04-01), None
patent: 2004-86951 (2004-03-01), None

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