Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1991-11-01
1994-06-28
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219508, 219501, 219210, 310315, 331176, H05B 102, H05B 100
Patent
active
053249160
ABSTRACT:
A system and method for compensating in real time the dynamic power variation of a computer chip containing CMOS devices is provided. The present invention functions to control the temperature variations on the chip thus eliminating the drift to analog signals associated with CMOS devices. The present invention controls the temperature with the use of a compensation heater located on the CMOS chip. The compensation heater is driven by a plurality of signals which act in harmony with one another to control the temperature on the chip when it becomes unstable. The system and method includes driving the compensation heater with a maximum dynamic power value to effectively maintain the temperature on the chip, evaluating the chip for temperature fluctuation, and compensating for the temperature fluctuation by driving the compensation heater with at least one compensation power value.
REFERENCES:
patent: 4284872 (1981-08-01), Graeme
patent: 4593258 (1986-06-01), Block
Patent Abstracts of Japan, vol. 6, No. 218 (E139) (1096) Nov. 2, 1982 & JP-A-57 121 268.
Patent Abstracts of Japan, vol. 11, No. 273 (C-445) (2720) Sep. 4, 1987 & JP-A-62 074 457.
Patent Abstracts of Japan, vol. 9, No. 318 (E-366) (2041) Dec. 13, 1985 & JP-A-60 152 045.
Goto Masaharu
Koerner Christopher
Hewlett--Packard Company
Paschall Mark H.
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