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Method and apparatus for control of power consumption in a computer system

  • US 5,655,127 A
  • Filed: 03/08/1996
  • Issued: 08/05/1997
  • Est. Priority Date: 02/04/1994
  • Status: Expired due to Term
First Claim
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1. A computer system having a full-power mode and a low-power mode of operation comprising:

  • a controller that generates an interrupt signal in response to a low power event or a fully operational event, the controller further generates a clock control signal, wherein the clock control signal is alternatively asserted for a first time duration and deasserted for a second time duration during the low-power mode of operation and the clock control signal is deasserted during the full-power mode of operation;

    a processor coupled to the controller, wherein the processor suppresses an internal clock signal to at least one functional block within the processor in response to an asserted clock control signal and transmits the internal clock signal to the at least one functional block within the processor in response to a deasserted clock control signal; and

    a communication device coupled to the processor, wherein the communication device periodically provides communication signals to the processor, and wherein the processor is responsive to the communication device during the low-power mode of operation when the interval between two consecutive communication signals is greater than the sum of the first time duration and the second time duration.

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