Power-supply control system of peripheral equipment of computer
First Claim
1. A power-supply control system for a peripheral equipment of a computer comprising:
- first switching means for generating a serial port sensing signal and an address selecting signal which is user adjustable;
input-output sensing means for both determining which input and output means are being used by testing a serial port sensing enable signal, an address selecting signal, an address signal and an address enable signal, and for outputting a signal which senses the use of an input-output means;
internal-operation sensing means for both generating a delay-time signal and a hardware disable signal, and for sensing the internal state and operation of a computer from a chip selecting signal of the input-output sensing means, a data signal, said delay-time signal and a state signal;
second switching means for enabling an adjustment of said delay-time signal by the user;
a counter for outputting a current counting value, for performing a continuous counting operation, and for resetting in response to a counter clear signal; and
controlling means for outputting a power controlling signal to an external input-output means based on the use of the input-output means of said input-output sensing means, the delay-time signal of said internal-operating sensing means, the hardware disable signal, a reset signal of a system bus, a signal for reading the input and output means, and the counting value of said counter.
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Accused Products
Abstract
The present invention discloses a power supply control system for the peripheral equipment of a computer which generates a signal for automatically cutting off the input power supplied to the peripheral equipment after a user has stop working on a computer for a predetermined period of time. Power to the peripheral equipment is then resumed when data is input to the computer system through an input. This system includes a first switching mechanism, an input-output sensing programmable array logic unit (PAL), internal-operation sensing programmable array logic unit, second switching mechanism, a counter and a controlling programmable array logic unit.
38 Citations
5 Claims
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1. A power-supply control system for a peripheral equipment of a computer comprising:
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first switching means for generating a serial port sensing signal and an address selecting signal which is user adjustable; input-output sensing means for both determining which input and output means are being used by testing a serial port sensing enable signal, an address selecting signal, an address signal and an address enable signal, and for outputting a signal which senses the use of an input-output means; internal-operation sensing means for both generating a delay-time signal and a hardware disable signal, and for sensing the internal state and operation of a computer from a chip selecting signal of the input-output sensing means, a data signal, said delay-time signal and a state signal; second switching means for enabling an adjustment of said delay-time signal by the user; a counter for outputting a current counting value, for performing a continuous counting operation, and for resetting in response to a counter clear signal; and controlling means for outputting a power controlling signal to an external input-output means based on the use of the input-output means of said input-output sensing means, the delay-time signal of said internal-operating sensing means, the hardware disable signal, a reset signal of a system bus, a signal for reading the input and output means, and the counting value of said counter.
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2. A power-supply control system of a peripheral equipment of a computer comprising:
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a system for sensing when a user does not input data to a computer through input means, for sensing when a user resumes working on the computer, and for outputting a power controlling signal via a data signal line; and a power controller for the peripheral equipment which is connected to said system and said data signal line for controlling an AC power supplied to the peripheral equipment, where the AC power supplied is cut off in response to the power controlling signal input from said system.
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3. A power-supply control system for a peripheral equipment of a computer system comprising:
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a system for sensing when a user does not input data to a computer through input means, for sensing when a user resumes working on the computer, and for outputting a power controlling signal via a data signal line; a power controller for the peripheral equipment which is connected to said system and said data signal line for controlling an AC power supplied to the peripheral equipment, where the AC power supplied is cut off in response to the power controlling signal input from said system; wherein said power controller for said peripheral equipment includes a photo-coupler for operating when the power controlling signal is input from said system, and for transmitting the power controlling signal after said power controlling signal is converted into a photo-signal and converted into an electrical signal again; and a plurality of relays for applying an AC power to a power supply when said photo-coupler operated, and for cutting off the supply of the AC power when said photo-coupler does not operate.
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4. A power-supply control system of a peripheral equipment of a computer comprising:
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a system for sensing when a user does not input data to a computer through input means, for sensing when a user resumes working on the computer, and for outputting a power controlling signal via a data signal line; and power cut-off means for peripheral equipment which eliminates noise and mechanical abrasion by applying or cutting off an AC power supplied to the peripheral equipment using gate turn-off thyristors which operate in response to the power controlling signal input from said system.
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5. A power-supply control system for a peripheral equipment of a computer system comprising:
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a system for sensing when a user does not input data to a computer through input means, for sensing when a user resumes working on the computer, and for outputting a power controlling signal via a data signal line; and power cut-off means for peripheral equipment which eliminates noise and mechanical abrasion by applying or cutting off an AC power supplied to the peripheral equipment using gate turn-off thyristors which operate in response to the power controlling signal input from said system, wherein said power cut-off means for peripheral equipment includes; a photo-coupler responsive to the power controlling signal from said system which transmits said power controlling signal after it is converted from a photo-signal to an electric signal; gate turn-off thyristors which are connected to each other in parallel with reversed polarity and are positioned between a power plug for peripheral equipment and a power supply for peripheral equipment; a diode and a capacitor for rectifying and smoothing an AC power input from said power plug for said peripheral equipment; and a capacitor for turning on said gate turn-off thyristors when a direct signal is applied by said diode and capacitor, and for turning off said gate turn-off thyristors when said photo-coupler is turned on by said system.
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Specification