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Power-supply control system of peripheral equipment of computer

  • US 5,486,726 A
  • Filed: 08/11/1993
  • Issued: 01/23/1996
  • Est. Priority Date: 08/13/1992
  • Status: Expired due to Term
First Claim
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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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