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:
Oct. 27, 2015
Filed:
Mar. 13, 2013
Junichi Hara, Kanagawa, JP;
Junichi Hara, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image projection device includes an acquiring unit configured to acquire a first ratio of a second distance to a first distance. The first distance is a distance between a projecting unit that projects a projection image and a first point in a projection area on which the projection image is projected. The second distance is a distance between the projecting unit and a second point in the projection area. The image projection device also includes an estimating unit configured to estimate, using the first ratio, light/dark levels of respective division areas into which the projection area is divided; and a light/dark-level processing unit configured to perform light/dark-level processing on areas in the projection image corresponding respectively to the division areas in accordance with the corresponding light/dark level.