Method and apparatus for controlling power of laser diode in...

Details Method and apparatus for controlling power of laser diode in... Method and apparatus for controlling power of laser diode in...

2007-12-04

2007-12-04

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S106000, C372S029011

Reexamination Certificate

active

10859290

ABSTRACT:
A method of and an apparatus for controlling a power of a light emitter in an optical disc drive to stabilize a servo control operation by efficiently compensating a slow tail effect occurring in a photodiode monitoring outputs of the light emitter are provided. The method includes: detecting an intensity of a laser signal reflected from a recording medium; normalizing the reference value using the detected value; and adjusting the reference value using the normalization result.

REFERENCES:
patent: 6222815 (2001-04-01), Nagano
patent: 7057990 (2006-06-01), Seo
patent: 07030398 (1995-01-01), None
patent: 11-273077 (1999-10-01), None

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