Optical disk device having means for generating a tracking...

Details Optical disk device having means for generating a tracking... Optical disk device having means for generating a tracking...

2007-01-30

2007-01-30

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S044350

Reexamination Certificate

active

10235700

ABSTRACT:
An optical disk device capable of data recording. A tracking error signal is generated from return light from an optical disk, and the tracking error signal to which a tracking offset signal is further added is supplied to a tracking servo circuit. A tracking offset signal in accordance with the driving current when recording data is determined based on the relationship between the driving current of the laser diode and the optimum tracking offset. Tracking control is performed using a fixed tracking offset signal when reproducing data and using a tracking offset signal which is variable in accordance with the driving current when recording data.

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