System and method for switching a computer system to a first...

Details System and method for switching a computer system to a first... System and method for switching a computer system to a first...

2006-02-28

2006-02-28

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

Reexamination Certificate

active

07007180

ABSTRACT:
A power saving method and device capable of dynamically select an appropriate power saving mode according to operation states of a computer system. When a power saving system task15detects that an execution queue132does not contain any executable user task and the computer system has entered an idle state, a power saving transition check module154checks if an event queue131contains a timer-expiration-waiting event. Depending upon whether or not the timer-expiration-waiting event is present, the computer system moves from a normal operation mode to a first or a second power saving operation mode, each power saving operation mode having its own power saving effect. A power saving mode release module231of an interrupt handler23returns the system from the first or second power saving operation mode to the normal operation mode in response to an occurrence of an interrupt. For example, in the first power saving operation mode, the CPU operation clock is stopped. In the second power saving operation mode, the CPU operation clock is stopped and, at the same time, a timer interrupt operation is disabled.

REFERENCES:
patent: 5511202 (1996-04-01), Combs
patent: 5560022 (1996-09-01), Dunstan et al.
patent: 5638541 (1997-06-01), Sadashivaiah
patent: 5832283 (1998-11-01), Chou et al.
patent: 6000035 (1999-12-01), Matsushima et al.
patent: 6189106 (2001-02-01), Anderson
patent: 6457132 (2002-09-01), Borgendale et al.
patent: 6678831 (2004-01-01), Mustafa et al.
patent: 6816977 (2004-11-01), Brakmo et al.
patent: 6832263 (2004-12-01), Polizzi et al.
patent: 2-311916 (1990-12-01), None
patent: 7-44469 (1995-02-01), None
patent: 7-295694 (1995-11-01), None

Affiliated with

Also associated with

Rating

System and method for switching a computer system to a first... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for switching a computer system to a first..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for switching a computer system to a first... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3709701