Computer system
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United States of America Patent
Stats
-
Nov 2, 2004
Grant Date -
Feb 12, 2004
app pub date -
Aug 9, 2002
filing date -
Aug 9, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A computer system comprises a host processor, a temperature sensor for sensing temperature in an enclosure of the system and one or more fans for cooling the enclosure. A service processor is provided for providing system management functions within the computer system. These include generating fan speed signals in response to temperature values detected by the temperature sensor, and generating a control signal. The system includes a fan controller for providing power for driving 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. In the absence of the control signal from the service processor, the fan controller will increase the fan speed to a predetermined fan speed, for example maximum, in order to ensure that no damage occurs in the event of a service processor malfunction.
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