The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2015
Filed:
Jul. 03, 2012
Shunsuke Hino, Matsumoto, JP;
Shunsuke Hino, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector that performs light control by varying power level of a light source in response to a video signal, includes a cooling fan that cools the light source, and a control device that averages samples of the power level of the light source based on the video signal or a brightness level of the video signal acquired with respect to each unit time and performs feedback control of a rotational speed of the cooling fan based on the average value, wherein the control device varies the number of samples and calculates the average value between the cases where the power level or the brightness level is rising and falling.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile