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:
Jun. 05, 2007
Filed:
Sep. 26, 2003
Richard C. Waters, Concord, MA (US);
Jay E. Thornton, Watertown, MA (US);
Ramesh Raskar, Cambridge, MA (US);
Mamoru Kato, Lexington, MA (US);
Paul H. Dietz, Hopkinton, MA (US);
Richard C. Waters, Concord, MA (US);
Jay E. Thornton, Watertown, MA (US);
Ramesh Raskar, Cambridge, MA (US);
Mamoru Kato, Lexington, MA (US);
Paul H. Dietz, Hopkinton, MA (US);
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
In a rear projection television, cathode ray tubes are mounted inside an enclosure so that each cathode ray tube projects output images onto a rear projection screen using a corresponding electron beam. Calibration images are generated for each cathode ray tube. A camera, also mounted inside the enclosure, acquires an input image of each calibration image. A distortion in each input image is measured, and the output images of the cathode ray tubes are corrected by adjusting the signals controlling the corresponding electron beams according to the distortion.