US Patent 7237904 Control method for cooling a projection display

Patent 7237904 was granted and assigned to Coretronic on July, 2007 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Coretronic

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

72379040

Patent Inventor Names

Chih-Neng Tseng0

Nien-Hui Hsu0

Shang-Hsuang Wu0

Date of Patent

July 3, 2007

Patent Application Number

110768860

Date Filed

March 11, 2005

Patent Primary Examiner

W. B. Perkey

Patent abstract

A control method for cooling a projection display, wherein a pressure sensor automatically detects the elevation above sea level of a projection display and then transmits a signal to the control unit for controlling the cooling unit to operate in a corresponding cooling mode, thereby the cooling efficiency varies with the elevation above sea level and then the cooling unit can operate in a corresponding rotating speed in order to effectively cool the whole projection display and increase the flexibility in using the projection display, and further extend the lifetime of each component inside the projection display.