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    • 4. 发明申请
    • Optical disc apparatus and method for performing optical power study thereof
    • 光盘装置及其光功率研究方法
    • US20070195679A1
    • 2007-08-23
    • US11657087
    • 2007-01-24
    • Ji Seon BaekOtsuka TatsuhiroKyung Geun Lee
    • Ji Seon BaekOtsuka TatsuhiroKyung Geun Lee
    • G11B7/00
    • G11B7/1267H01S5/0683
    • An optical disc apparatus and a method for performing optical power study thereof can prevent errors for a power study result, which may be generated in a condition that the output power of a laser diode (LD) is saturated at a high temperature, in which the power study detects output characteristics of the LD. The optical disc apparatus includes a laser output device which outputs a laser beam in response to a light output control signal, a sensor which detects some of the outputted laser beam to output a signal corresponding to the outputted laser beam, and a controller which applies the light output control signal of a certain range to the laser output device and which calculates characteristics of the laser output power which is outputted from the laser output device in response to the light output control signal, based on the output signals of the sensor, which correspond to the light output control signal, and whether the laser output device is in a saturated state. Therefore, the optical disc apparatus can prevent errors of the result of the power study procedure generated due to power saturation of the LD at a relatively high temperature, and can correctly obtain the result of the power study procedure at a relatively low temperature.
    • 用于进行光功率研究的光盘装置和方法可以防止在激光二极管(LD)的输出功率在高温下饱和的条件下产生的功率研究结果的误差,其中 电力研究检测LD的输出特性。 光盘装置包括:响应于光输出控制信号输出激光束的激光输出装置;检测输出的激光束的一部分输出与输出的激光束对应的信号的传感器;以及控制器, 基于传感器的输出信号,对激光输出装置输出一定范围的光输出控制信号,并根据传感器的输出信号计算从激光输出装置输出的激光输出功率的特性 到光输出控制信号,以及激光输出装置是否处于饱和状态。 因此,光盘装置可以防止在相对较高的温度下由于LD的功率饱和而产生的功率研究过程的结果的误差,并且可以在相对较低的温度下正确地获得功率研究程序的结果。