CPU frequency regulating circuit

Details CPU frequency regulating circuit CPU frequency regulating circuit

2006-09-22

2009-06-02

Suryawanshi, Suresh K (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

C713S322000, C323S284000

Reexamination Certificate

active

07543162

ABSTRACT:
An exemplary CPU frequency regulating circuit includes a detecting circuit, a comparing circuit, and an adjusting circuit. The detecting circuit is coupled to a power circuit of a CPU for receiving and amplifying a load voltage. The comparing circuit is coupled to the detecting circuit for comparing the amplified load voltage with a default voltage. The adjusting circuit is coupled between the comparing circuit and the CPU for selecting a CPU frequency according to a result of the comparison. The CPU frequency regulating circuit detects the load voltage of the power circuit of the CPU for selecting an appropriate frequency to the CPU according to a working condition.

REFERENCES:
patent: 4958117 (1990-09-01), Kerkman et al.
patent: 6134167 (2000-10-01), Atkinson
patent: 6519707 (2003-02-01), Clark et al.
patent: 6639391 (2003-10-01), Huang et al.
patent: 2002/0062454 (2002-05-01), Fung
patent: 2007/0057720 (2007-03-01), Hand et al.
patent: 1614530 (2005-05-01), None

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