Power control apparatus and method for an optical drive

Details Power control apparatus and method for an optical drive Power control apparatus and method for an optical drive

2007-01-31

2010-10-05

Chow, Lixi (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S116000

Reexamination Certificate

active

07808871

ABSTRACT:
A power control apparatus and method for an optical drive is disclosed. The power control apparatus estimates the temperature rising effect of a laser diode and performs a partial open-loop power control, achieving accurate write power control. Therefore, regarding to a high-speed, high-density optical disk recording medium combined with multi-pulse write waveforms, the invention can also achieve accurate write power control even though the response speed of a front photodiode is much slower than the modulation speed of recording pulses of the laser diode.

REFERENCES:
patent: 2006/0007971 (2006-01-01), Santo et al.
patent: 2006/0146894 (2006-07-01), Shin
patent: 2006/0239153 (2006-10-01), Hsin et al.
patent: 2007/0189345 (2007-08-01), Ko et al.
patent: 1917050(A) (2007-02-01), None

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