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:
Dec. 30, 2003
Filed:
Jun. 06, 2000
Applicant:
Inventors:
Albert Runtze, Villingen-Schwenningen, DE;
Jacques Chauvin, Mönchweiler, DE;
Assignee:
Thomson Licensing S.A., Boulogne, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 3/22 ; H04N 3/26 ;
U.S. Cl.
CPC ...
H04N 3/22 ; H04N 3/26 ;
Abstract
A method for convergence correction in a projection television display having a monochromatic tube for each of the three primary colors red, green and blue, whose images can be projected on a screen. Each tube has an associated deflection correction device which comprises a convergence circuit. Convergence correction values are determined by measurement using sensors with screen edge locations which cannot be seen. Convergence correction values are calculated for the entire screen by interpolation between these values.