System and method for providing cooling fan characteristic...

Details System and method for providing cooling fan characteristic... System and method for providing cooling fan characteristic...

2011-08-02

2011-08-02

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

C318S602000, C318S400040, C318S461000, C318S471000

Reexamination Certificate

active

07990087

ABSTRACT:
A device comprising a fan controller, an encoder, a driver, a resistor/capacitor filter, and a baseboard management controller. The fan controller is configured to output a cooling fan status signal, and to output a cooling fan information data signal. The encoder is configured to encode the cooling fan status signal and the cooling fan information data signal together into a combined signal. The driver is configured to invert the combined signal and to output an inverted signal. The resistor/capacitor filter is configured to filter out the cooling fan information data signal from the inverted signal, and to output a filtered signal. The baseboard management controller is configured to determine a status of a cooling fan in response to the filtered signal, and to output a control signal to the fan controller module for the cooling fan based on the cooling fan information data signal within the inverted signal.

REFERENCES:
patent: 6008603 (1999-12-01), Jones et al.
patent: 7279857 (2007-10-01), Babb et al.
patent: 7327114 (2008-02-01), Verge et al.
patent: 7612508 (2009-11-01), Jreij et al.
patent: 7714528 (2010-05-01), Chen et al.
U.S. Appl. No. 11/031,831, filed Jan. 7, 2005.

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