公开(公告)号：US06700857B1

公开(公告)日：2004-03-02

申请号：US09704987

申请日：2000-11-02

申请人： Je-kook Kim ,  Young-wook Jang ,  Bom-yun Kim

发明人： Je-kook Kim ,  Young-wook Jang ,  Bom-yun Kim

IPC分类号： G11B700

CPC分类号： G11B7/1263 ,  G11B7/0903

摘要： Method and apparatus for controlling the light power of an optical disk system, and optical disk system having the same are provided. The optical disk system includes a microcontroller for controlling the operation of the optical disk system, a light power adjusting apparatus for generating a light quantity control signal for controlling the quantity of light emitted from the optical disk, and an optical pickup device for adjusting the quantity of light emitted from the optical disk in response to the light quantity control signal. The method includes the steps of converting E and F beam signals used for generating a tracking error signal into the form of voltage and synthesizing the converted E and F beam signals to obtain a tracking sum signal; maintaining the light power of the light emitting diode when the level of the tracking sum signal is the same as that of a reference signal; decreasing the light power of the light emitting diode, corresponding to the difference between the tracking sum signal and the reference signal, when the level of the travel sum signal is higher than that of the reference signal; and increasing the light power of the light emitting diode, corresponding to the difference between the tracking sum signal and the reference signal, when the level of the travel sum signal is lower than that of the reference signal. The progress of the method returns back to the stop of obtaining a tracking sum signal after increasing or decreasing the light power. Accordingly, the quantity of light reflected from the an optical disk can be constantly maintained.

摘要翻译： 提供了用于控制光盘系统的光功率的方法和装置，以及具有该光盘系统的光盘系统。 光盘系统包括用于控制光盘系统的操作的微控制器，用于产生用于控制从光盘发射的光量的光量控制信号的光功率调节装置，以及用于调节光量的光学拾取装置 响应于光量控制信号从光盘发射的光。 该方法包括以下步骤：将用于产生跟踪误差信号的E和F波束信号转换为电压形式，并合成转换的E和F波束信号以获得跟踪和信号; 当跟踪和信号的电平与参考信号的电平相同时，保持发光二极管的光功率; 当旅行和信号的电平高于参考信号的电平时，减小对应于跟踪和信号与参考信号之间的差的发光二极管的光功率; 并且当旅行和信号的电平低于参考信号的电平时，增加对应于跟踪和信号和参考信号之间的差的发光二极管的光功率。 该方法的进展返回到在增加或减少光功率之后获得跟踪和信号的停止。 因此，可以恒定地维持从光盘反射的光量。