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Computer system

  • US 20040027799A1
  • Filed: 08/09/2002
  • Published: 02/12/2004
  • Est. Priority Date: 08/09/2002
  • Status: Active Grant
First Claim
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1. A computer system which comprises:

  • (i) a host processor;

    (ii) a temperature sensor for sensing temperature in, or in relation to, an enclosure of the system;

    (iii) one or more fans for cooling the enclosure;

    (iv) a service processor for providing system management functions within the computer system, including generating fan speed signals in response to temperature values detected by the temperature sensor, and generating a control signal; and

    (v) a fan controller for providing a driving signal for the fan or at least one of the fans in response to the fan speed signals generated by the service processor only when the fan controller also receives the control signal from the service processor;

    wherein, in the absence of the control signal from the service processor, the fan controller will alter the driving signal to increase the fan speed to a predetermined fan speed.

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