Program, recording medium, method, and information...

Electrical computers and digital processing systems: support – Computer power control – Power conservation

Reexamination Certificate

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Details

C713S324000, C713S330000

Reexamination Certificate

active

07325151

ABSTRACT:
Disclosed is a program product for directing the information processing apparatus to control an execution mode of a central processing unit(CPU) provided, the CPU having a plurality of execution modes, whose types and power consumptions of executable processing are different from one another, the program product comprising: an apparatus readable medium; recovery time acquisition means for acquiring a recovery time which is a time required for the CPU to recover from a low power mode to a high power mode of which power consumption is higher than that of the low power mode; allowed time acquisition means for acquiring the longest allowed time from a request for processing unprocessable in the low power mode and processable in the high power mode to a start of the processing after the CPU recovers to the high power mode, the request being made by an input/output device; and execution mode setting means for settingthe CPU in a state of being shiftable to the low power mode if it is determined that the CPU is able to shift to the low power mode based on the allowed time and the recovery time.

REFERENCES:
patent: 5999730 (1999-12-01), Lewis
patent: 6934199 (2005-08-01), Johnson et al.
patent: 6941480 (2005-09-01), Dai
patent: 7149915 (2006-12-01), Matsuoka et al.
patent: 2005/0149768 (2005-07-01), Kwa et al.
patent: 08-006881 (1996-01-01), None

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