Power control device and method of single base power for...

Details Power control device and method of single base power for... Power control device and method of single base power for...

2006-01-26

2009-12-29

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S047500

Reexamination Certificate

active

07639590

ABSTRACT:
A power control device of single base power is provided for an optical read/write module of an optical disk drive. The optical read/write module generates a power feedback signal and a temperature signal. The power control device includes a current compensating module, a current computing module and a current integrating module. The current compensating module generates an operating current compensating signal and a threshold compensating signal according to the power feedback signal, the temperature signal, a base power signal and a function relationship between the temperature signal and the threshold current of the optical read/write module. The current computing module receives the operating current compensating signal to compute a first operating current signal and a second operating current signal based on the operating current compensating signal according to the base power signal and a reference power signal. The current integrating module receives the threshold current compensating signal, the first operating current signal and the second operating current signal to generate a power control signal to drive the optical read/write module.

REFERENCES:
patent: 5036519 (1991-07-01), Ema et al.
patent: 6671248 (2003-12-01), Miyabata et al.
patent: 6922383 (2005-07-01), Sakata et al.
patent: 7242660 (2007-07-01), Lai et al.
patent: 7280446 (2007-10-01), Suzuki et al.

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