Method for rechecking whether a CPU enters a powr saving...

Details Method for rechecking whether a CPU enters a powr saving... Method for rechecking whether a CPU enters a powr saving...

2007-07-10

2007-07-10

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Reexamination Certificate

active

10808488

ABSTRACT:
Embodiments of a device and method for managing power in a computer system can reduce power consumption. A circuit such as a filter driver having a packet monitoring function can be used to perform a check on whether a specific device such as an audio or USB device is in use and a check on the power management state of a CPU. Depending on the checked results, the filter driver forces the CPU power management state to enter a specific power saving state. Accordingly, unnecessary power consumption caused by the CPU in an idle state can be reduced or prevented. Further, heat generated by the CPU can be reduced or suppressed.

REFERENCES:
patent: 5784628 (1998-07-01), Reneris
patent: 6148345 (2000-11-01), Yamaki
patent: 6308278 (2001-10-01), Khouli et al.
patent: 6499102 (2002-12-01), Ewertz
patent: 6968468 (2005-11-01), Lam
patent: 10-2002-38385 (2002-05-01), None
patent: WO 98/44405 (1998-10-01), None
Chinese Office Action (dated May 27, 2005).

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