US Patent 7501717 Apparatus and method for driving different fans

Patent 7501717 was granted and assigned to Tyan on March, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Tyan

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75017170

Patent Inventor Names

Chun-Hsu Chen0

Date of Patent

March 10, 2009

Patent Application Number

114357290

Date Filed

May 18, 2006

Patent Primary Examiner

‌

Robert L Deberadinis

Patent abstract

A universal driving apparatus of a computer system inputs two control signals of two different duty cycles through a speed control pin of a receptacle for connecting fans with the electricity supplied continuously. The differentiation percentage of the two speeds is compared with a threshold to identify the fan types. Therefore the computer system is capable of driving the identified fan correctly according to the result of the fan-type identification.