Complex signal processing system and related method for controlling multiple fans
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United States of America Patent
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Jul 20, 2010
Grant Date -
Mar 27, 2008
app pub date -
Dec 11, 2006
filing date -
Sep 21, 2006
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Abstract
A complex signal processing system for multiple fans is used to control the rotation of a first fan and a second fan. The speed signals of the first fan and the second fan are processed through an XOR operation to obtain a complex speed signal. In response to the complex speed signal, the speed and the operational status of the first fan and the second fan can be evaluated.
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