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. 14, 1982
Filed:
Mar. 31, 1981
Claude Pons, Grotta Ferrata, IT;
Videocolor (S.A.), , FR;
Abstract
A process of analysis of convergence along two orthogonal components of the three guns in a color television tube with ganged guns involves, for example, placing an analysis slit 20 in front of the screen of the cathode-ray tube in order to observe at least three luminophore columns 15 of different colors in full width, of causing a luminous line of a single color to pass by, turning on only the corresponding gun in front of said slit, and of measuring the current in the deviator of the cathode-ray tube for which the maximum light intensity is observed through the slit, and of beginning these operations again for each of the three colors, the measured values making it possible to deduce the convergence gaps of the beams at the placement of the slit. The invention allows automatic convergence correction of the cathode-ray tube.