Patent ID: 7668067

Claim:
A power control device of multi base powers for an optical read/write module of an optical disk drive, wherein the optical read/write module generates a power feedback signal and a temperature signal, the device comprising: a base power selecting module for selecting one of a first base power signal and a second base power signal to output a base power signal; a current compensating module for generating an operating current compensating signal and a threshold compensating signal according to the power feedback signal, the temperature signal, the base power signal and a function relationship between the temperature signal and the threshold current of the optical read/write module; a current computing module for receiving the operating current compensating signal to compute a first operating current signal, a second operating current signal and a third operating current signal based on the operating current compensating signal according to the base power signal and a reference power signal; a current integrating module for receiving the threshold current compensating signal, the first operating current signal, the second operating current signal and the third operating current signal to generate a power control signal to drive the optical read/write module.