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. 07, 2009
Filed:
Jan. 24, 2006
Peter A. Zagar, Hartford, WI (US);
Frederick C. Ellner, Glendale, WI (US);
Hans C. Hansen, West Bend, WI (US);
Peter A. Zagar, Hartford, WI (US);
Frederick C. Ellner, Glendale, WI (US);
Hans C. Hansen, West Bend, WI (US);
Astronautics Corporation of America, Milwaukee, WI (US);
Abstract
A color balanced solid-state backlight provides feedback control of each color using a single photodetector by imposing a modulation pattern on the solid-state lamps revealing individual colors to the photodetector. The photodetector signal provides feedback controlling color balance over a small range of instantaneous brightness less than larger range of average brightness of the display to provide for accurate color balance throughout a large range of average brightnesses.