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:
Jul. 02, 2013
Filed:
Jul. 08, 2011
Mark A. Handschy, Boulder, CO (US);
James M. Dallas, Superior, CO (US);
Michael Wayne Yee, Boulder, CO (US);
Per Harold Larsen, Boulder, CO (US);
Mark A. Handschy, Boulder, CO (US);
James M. Dallas, Superior, CO (US);
Michael Wayne Yee, Boulder, CO (US);
Per Harold Larsen, Boulder, CO (US);
Citizen Finetech Miyota Co., Ltd., Nagano, JP;
Abstract
A gamma variation of image intensity is created by varying the illumination intensity during a pulse width modulated display time period. During the pulse width modulated display time period a ramp signal may be compared with the image data to determine when pixel electrodes of the pixel array are switched. The illumination intensity may be varied in concert with ramp signal to produce a quadratic variation of displayed intensity on image data value. The illumination source could be an LED illumination source and intensity of the LED illumination source could be controlled using pulse width modulation.