Electrical computers and digital processing systems: support – Computer power control
Reexamination Certificate
2005-08-09
2005-08-09
Jean, Frantz B. (Department: 2151)
Electrical computers and digital processing systems: support
Computer power control
C713S320000, C713S322000, C713S330000
Reexamination Certificate
active
06928559
ABSTRACT:
A computing device operates over a range of voltages and frequencies and over a range of processor usage levels. The computing device includes at least a variable frequency generator, a variable voltage power supply and voltage supply level and clocking frequency management circuitry. The variable frequency generator is coupled to the processor and delivers a clock signal to the processor. The variable voltage power supply is coupled to the processor and delivers voltage to the processor. The voltage supply level and clocking frequency management circuitry adjust both the voltage provided by the variable voltage power supply and the frequency of the signal provided by the variable frequency generator. The computing device includes a temperature sensor that provides signals indicative of the temperature of the processor and the voltage supply level and clocking frequency management circuitry adjusts the voltage and/or the clocking frequency provided by the variable voltage power supply. The computing device may also include a fan controlled by the voltage supply level and clocking frequency management circuitry, the fan adjusting the temperature of the processor when activated. In cold weather applications, the computing device may further include a heater controlled by the voltage supply level and clocking frequency management circuitry that raises the temperature of the processor when activated.
REFERENCES:
patent: 4254475 (1981-03-01), Cooney et al.
patent: 4885521 (1989-12-01), Crampton
patent: 5053943 (1991-10-01), Yokoyama
patent: 5142684 (1992-08-01), Perry et al.
patent: 5179493 (1993-01-01), Imanishi
patent: 5257202 (1993-10-01), Feddersen et al.
patent: 5300835 (1994-04-01), Assar et al.
patent: 5307257 (1994-04-01), Fukushima
patent: 5402524 (1995-03-01), Bauman et al.
patent: 5475847 (1995-12-01), Ikeda
patent: 5483464 (1996-01-01), Song
patent: 5515134 (1996-05-01), Taguchi
patent: 5627412 (1997-05-01), Beard
patent: 5713030 (1998-01-01), Evoy
patent: 5719800 (1998-02-01), Mittal et al.
patent: 5727193 (1998-03-01), Takeuchi
patent: 5745375 (1998-04-01), Reinhardt et al.
patent: 5778237 (1998-07-01), Yamamoto et al.
patent: 5787294 (1998-07-01), Evoy
patent: 5787369 (1998-07-01), Knaak
patent: 5832284 (1998-11-01), Michail et al.
patent: 5848282 (1998-12-01), Kang
patent: 5987244 (1999-11-01), Kau et al.
patent: 6062202 (2000-05-01), Chasteen
patent: 6216235 (2001-04-01), Thomas et al.
R.F. Lyon; Cost, Power, and Parallelism in Speech Signal Processing; 1993 IEEE; pp. 15.1.1-15.1.9.
L.S. Nielsen, C. Niessen, J. Sparso, K. van Berkel; Low-Power Operation Using Self-Timed Circuits and Adaptive Scaling of the Supply Voltage; Dec. 1994 IEEE; pp. 391-397.
K. Govil, E. Chan, H. Wasserman; Comparing Algorithms for Dynamic Speed-Setting of a Low-Power CPU; 1995; pp. 13-25.
V. von Kaenel, P. Macken, M.G.R. Debrauwe; A Voltage Reduction Technique for Battery-Operated Systems; 1990 IEEE; pp. 1136-1140.
M. Weiser, B. Welch, A. Demers, S. Shenker; Scheduling for Reduced CPU Energy; Nov. 1994.
C. Melear; Hardware and Software Techniques for Power Conservation in Portable Devices; Sep. 1994; pp. 453-461.
Broadcom Corporation
Jean Frantz B.
McAndrews Held & Malloy Ltd.
LandOfFree
Battery powered device with dynamic power and performance... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery powered device with dynamic power and performance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery powered device with dynamic power and performance... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3477334