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:
Aug. 14, 2007
Filed:
Feb. 05, 2004
Taketoshi Hibi, Tokyo, JP;
Shinji Okamori, Tokyo, JP;
Taketoshi Hibi, Tokyo, JP;
Shinji Okamori, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A projection-type display apparatus for projecting an image onto a screen includes a light source, a signal processing unit for processing an input image signal to output a first image signal representing first primary-color information R, G, and Brepresenting values of red, green, and blue components of an image to be projected, a signal conversion unit for converting the first image signal into a second image signal representing a coefficient M which depends on luminance of the image to be projected defined by the first primary-color information R, G, and B, and into a third image signal representing second primary-color information R=R/M, G=G/M, and B=B/M. The projection-type display apparatus also includes a first light valve for modulating light received from the light source in accordance with the coefficient M, the light changing in color among red, green, and blue, a second light valve for further modulating the light received from the first light valve in accordance with the second primary-color information R, G, and Bin sequence, and a projection unit for throwing the light received from the second light valve onto the screen.