JPS6423317A - Power control circuit - Google Patents
Power control circuitInfo
- Publication number
- JPS6423317A JPS6423317A JP62180350A JP18035087A JPS6423317A JP S6423317 A JPS6423317 A JP S6423317A JP 62180350 A JP62180350 A JP 62180350A JP 18035087 A JP18035087 A JP 18035087A JP S6423317 A JPS6423317 A JP S6423317A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- circuit
- working frequency
- frequency
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To keep the temperature of a power control circuit within an allowable range by changing the working frequency supplied to a computer system comprising a CMOS circuit and controlling the generated electric power. CONSTITUTION:The temperature of a computer system 1 is always monitored by a temperature monitor 5. The temperature data obtained by the monitor 5 are read by a program of the system 1 and a selection signal is given to a selector 9 from an output circuit 10 for control of a working frequency fB. The selector 9 selects a frequency fS that is accordant with the present temperature conditions out of those working frequencies 1/2fB-1/nfB outputted from a dividing circuit 8 and supplies the frequency fS to the system 1. Thus a power control circuit 12 increases the working frequency against a low temperature to increase the processing speed and then reduces the working frequency against a high temperature to reduce the processing speed respectively for suppression of the generated electric power. Thus it is possible to control the generated power and to keep the circuit temperature under an allowable range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62180350A JPS6423317A (en) | 1987-07-20 | 1987-07-20 | Power control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62180350A JPS6423317A (en) | 1987-07-20 | 1987-07-20 | Power control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6423317A true JPS6423317A (en) | 1989-01-26 |
Family
ID=16081695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62180350A Pending JPS6423317A (en) | 1987-07-20 | 1987-07-20 | Power control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6423317A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0592783A2 (en) * | 1992-10-16 | 1994-04-20 | Cirrus Logic, Inc. | Heat regulator for integrated circuits |
WO1995025296A1 (en) * | 1994-03-15 | 1995-09-21 | Ing. C. Olivetti & C., S.P.A. | Device for thermal control of a central processing unit |
EP0706108A3 (en) * | 1994-10-03 | 1996-06-26 | Advanced Micro Devices Inc | Clock control circuits for microprocessors |
US7028211B2 (en) | 2000-09-08 | 2006-04-11 | Fujitsu Limited | Method and apparatus for determining a system clock frequency by summing calculated CPU usage rates for each of a plurality applications |
-
1987
- 1987-07-20 JP JP62180350A patent/JPS6423317A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0592783A2 (en) * | 1992-10-16 | 1994-04-20 | Cirrus Logic, Inc. | Heat regulator for integrated circuits |
WO1995025296A1 (en) * | 1994-03-15 | 1995-09-21 | Ing. C. Olivetti & C., S.P.A. | Device for thermal control of a central processing unit |
EP0706108A3 (en) * | 1994-10-03 | 1996-06-26 | Advanced Micro Devices Inc | Clock control circuits for microprocessors |
US7028211B2 (en) | 2000-09-08 | 2006-04-11 | Fujitsu Limited | Method and apparatus for determining a system clock frequency by summing calculated CPU usage rates for each of a plurality applications |
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