Recording/playback apparatus and laser drive pulse adjusting...

Details Recording/playback apparatus and laser drive pulse adjusting... Recording/playback apparatus and laser drive pulse adjusting...

2007-09-17

2011-11-22

Klimowicz, Will J (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

Reexamination Certificate

active

08064309

ABSTRACT:
A recording/playback apparatus includes an optical head unit, a laser drive pulse generator, a power setting unit, an evaluation value calculator, and an adjustment controller. The adjustment controller performs control such that recording operations for adjusting laser drive pulses are performed on an optical recording medium by changing the adjustment setting for the laser drive pulses to different adjustment setting conditions under a condition that each of two or more levels of power of the laser light is set to obtain a quality evaluation value for each adjustment setting condition, and determines the adjustment setting for the laser drive pulses on the basis of the obtained quality evaluation value, and sets the determined adjustment setting in the laser drive pulse generator.

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