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. 08, 2002
Filed:
Aug. 21, 2000
Applicant:
Inventors:
Michel Lefort, Varanges, FR;
Jean-Pierre Garnier, Couternon, FR;
Assignee:
Thomson Tubes & Displays, S.A., Boulogne Cedax, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 1/04 ;
U.S. Cl.
CPC ...
G09G 1/04 ;
Abstract
A method for operating a cathode-ray tube electron gun, suitable for multimode operation, for example, in order to display television images and multimedia images of the SVGA, XGA type, in which the zone for forming the electron beam generated by the cathode has at least two control electrodes. The two control electrodes are connected to voltage sources in such a way that the potential difference between the two control electrodes increases when the beam current decreases.