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. 06, 2013
Filed:
Aug. 02, 2010
Taisuke Murata, Tokyo, JP;
Taisuke Murata, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rear-projection type display device has a projection device, a transmission type screen, a housing, and input means. The projection device projects a light from a light source, as an optical image. The optical image is projected to the transmission type screen. The housing accommodates the projection device and the transmission type screen. A user operation is inputted to the input means. The rear-projection type display device includes a storage section, a distortion amount detection section, a correction amount calculation section, and a correction section. The storage section stores a distortion detection image to be displayed on the transmission type screen. The distortion amount detection section changes the distortion detection image in accordance with an operation inputted from the input means, and detects a distortion amount of the image based on operations inputted by the input means until the distortion detection image displayed on the transmission type screen is brought into a predetermined state. The correction amount calculation section calculates a correction amount based on the distortion amount. The correction section corrects an image projected by the projection device, based on the calculated correction amount.