System and method for cooling a CPU passively

Details System and method for cooling a CPU passively System and method for cooling a CPU passively

2006-09-15

2010-02-16

Ford, John K (Department: 3744)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S323000, C710S267000, C702S132000, C340S584000, C340S588000

Reexamination Certificate

active

07664977

ABSTRACT:
The present invention provides a method for cooling a CPU. The method includes the steps of: setting a passive cooling mode; setting a critical temperature and a reference temperature that is lower than the critical temperature; setting a plurality of temperature intervals between the reference temperature and the critical temperature; predetermining a duty cycle corresponding to each temperature interval; detecting a current temperature of the CPU; comparing the current temperature with the reference temperature and the critical temperature; entering into the passive cooling mode if the current temperature is between the reference temperature and the critical temperature; confirming which temperature interval the current temperature falls in; confirming a corresponding predetermined duty cycle according to the temperature interval; and switching the CPU between a working status and a sleeping status according to the confirmed predetermined duty cycle. A related system is also disclosed.

REFERENCES:
patent: 6166907 (2000-12-01), Chien
patent: 6172611 (2001-01-01), Hussain et al.

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