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:
Jan. 01, 2013
Filed:
Nov. 12, 2009
Mamoru Shibasaki, Tachikawa, JP;
Mamoru Shibasaki, Tachikawa, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A projection apparatus includes a plurality of light sources individually emitting light in a plurality of colors, a projection section using light from the light sources to generate images corresponding to respective plural color components of the light source light for each period, to sequentially project the images, a measurement section measuring a brightness of the light sources for each of the plurality of colors, an average brightness calculation section calculating, at each image projection term for the same color component, an average brightness of the brightness measured by the measurement section at the image projection term, and a light source control section adjusting the brightness of the light sources so that an average chromaticity based on the average brightness calculated by the average brightness calculation section and indicating the brightness is equal or approximate to a target chromaticity.