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. 02, 2018
Filed:
Mar. 17, 2016
Applicants:
Masaaki Ishikawa, Kanagawa, JP;
Yukinaka Uchiyama, Tokyo, JP;
Inventors:
Masaaki Ishikawa, Kanagawa, JP;
Yukinaka Uchiyama, Tokyo, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04N 3/223 (2006.01); H04N 3/227 (2006.01); H04N 9/31 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3185 (2013.01); H04N 3/223 (2013.01); H04N 9/3147 (2013.01);
Abstract
A projection system, apparatus, and method in which a plurality of projectors project images to form an image as a whole on a projected area which is a screen area on which a content image is projected without a frame. Images for calibration are output by the plurality of projectors, the images for calibration including positioning markers that are indications for positioning to the corners of the projected area. Correction coefficients are calculated based on reference points of the projected area, and a projection target area is defined which corresponds to the screen area.