Optical disk apparatus

Details Optical disk apparatus Optical disk apparatus

2007-09-20

2010-11-16

Feild, Joseph H (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S047530, C369S053220

Reexamination Certificate

active

07835248

ABSTRACT:
In an exemplary embodiment of the present invention, after test write is performed with a predetermined test power to a first track on an optical disk, test write is performed with the same test power as the first track to a second track adjacent to the first track. Then, reproduction signals are obtained by reproducing the first track and the second track respectively, and a determination whether or not the test power is set to a recording laser power in recording main information is made based on a relationship between the obtained reproduction signals.

REFERENCES:
patent: 7564754 (2009-07-01), Matsumoto
patent: 2006/0072409 (2006-04-01), Kato et al.
patent: 2003-228840 (2003-08-01), None

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