System for, and method of, regulating the amount of power provid

Details System for, and method of, regulating the amount of power provid System for, and method of, regulating the amount of power provid

1998-03-09

2000-04-04

Wambach, Margaret R.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Determining machine or apparatus operating time or...

377 1, 377 39, 320114, 320136, G07C 300

Patent

active

060470380

ABSTRACT:
A first device provides a repetitive count of time. A second device indicates in each successive count of time by the first device during the processing apparatus operation whether the processing apparatus has processed data for at least a first particular percentage of time in each such successive time count. A third device indicates in each successive count of time by the first device during the processing apparatus operation whether the processing apparatus has processed data for at least a second particular percentage of time in each such successive time count where the second particular time percentage is less than the first particular time percentage. A power supply provides power to the processing apparatus during the time that the apparatus is processing data. A control device adjusts the amount of power supplied to the processing apparatus, during the time that the apparatus is processing data, in accordance with the indications provided by the second and third devices in the successive counts of time by the first device. Specifically, the control device increases the power level supplied to the processing apparatus when the time percentage is greater than the first particular value. The control device decreases the power level supplied to the processing apparatus when the time percentage is less than the second particular value. The increases and decreases in the power level may be respectively provided by increases and decreases in the frequency of a clock signal in the processing apparatus.

REFERENCES:
patent: 5317601 (1994-05-01), Riordan et al.
patent: 5469116 (1995-11-01), Slemmer
patent: 5638028 (1997-06-01), Voth
patent: 5887178 (1999-03-01), Tsujimoto et al.

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