OPTICAL DISC APPARATUS AND METHOD FOR OPTICAL POWER STUDY THEREOF

摘要

An optical disc device and an optical output study method are provided to prevent the inaccuracy of a power study result capable of being generated according to the saturation of an LD(Laser Diode) output in a high temperature and perform accurate power study in a low output. An LD(Laser Diode)(24) emits a laser of a corresponding output according to an optical output control signal. An FPD(Front Photo Diode)(22) detects a part of the emitted laser, and outputs a signal corresponding to the output of the emitted laser. A control unit(34) provides the optical output control signal of a uniform range to the LD(24), and calculates a characteristic of the laser output corresponding to the optical output control signal in consideration of whether the LD(24) is saturated by using the output signal of the LD(24).