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. 30, 2012
Filed:
Mar. 17, 2009
Akihiko Tamura, Matsumoto, JP;
Akihiko Tamura, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector adapted to correct a keystone distortion of an image, includes a frame memory adapted to store a pre-correction image, a block data storage memory adapted to store the pre-correction image by block data that composed of M pixels in a first direction and N pixels in a second direction (M, N≧2), a correction section adapted to correct the pre-correction image based on the block data stored in the block data storage memory, and a control section adapted to perform control of obtaining the pre-correction image from the frame memory by the block data, and storing the obtained pre-correction image in the block data storage memory, and the control section obtains contiguous n×N (n≧2) lines of the image from the frame memory and stores the obtained image in the block data storage memory at the beginning of the correction process.