Multiprocessor system controlling frequency of clock input...

Details Multiprocessor system controlling frequency of clock input... Multiprocessor system controlling frequency of clock input...

2005-08-09

2005-08-09

Fleming, Fritz M. (Department: 2182)

Electrical computers and digital processing systems: support

Computer power control

Power conservation

C713S320000, C713S400000, C713S600000

Reexamination Certificate

active

06928566

ABSTRACT:
The first processor controls the clock frequency control unit according to a ratio between an estimate of the processing time of the first program and an estimate of the processing time of the second program, to change the frequency of a clock being input into the first processor. In addition, the first processor controls the variable power source according to the frequency of the clock being input into the first processor, to change the power supply voltage being supplied to the first processor. Thus, the power consumption of the first processor can be reduced considerably.

REFERENCES:
patent: 5774704 (1998-06-01), Williams
patent: 6026231 (2000-02-01), Tymchenko
patent: 6141762 (2000-10-01), Nicol et al.
patent: 6298448 (2001-10-01), Shaffer et al.
patent: 6715089 (2004-03-01), Zdravkovic
patent: 5-28116 (1993-02-01), None
patent: 8-6681 (1996-01-01), None
patent: 08-190535 (1996-07-01), None
Machine translation of JP 05-028116.
Machine translation of JP 08-190535.
“Computer Architecture: Design and Performance”, B. Wilkinson, Apr. 30, 1994, p. 210.
“Real-Time Task Scheduling for a Variable Voltage Processor”, T. Okuma et al., The Journal of The Institute of Electronics, Information and Communication Engineers, C vol. J83-C No. 6, Jun. 2000, pp. 454-462.

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