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:
Jan. 27, 1981
Filed:
Aug. 08, 1978
Joel Fumeron, Saint-Ouen, FR;
Compagnie Internationale pour l'Informatique, Paris, FR;
Abstract
Information is displayed in alphanumeric form on a screen of a gas discharge tube having row and column electrodes with intersections. Gas in the tube is ionized in response to a predetermined ionizing voltage existing between the rows and columns at selected intersections to cause a visible signal to be derived at the intersections. Logic means applies ionizing voltages to column electrodes of the screen in a sequential scan. A video scan controller has one input responsive to signals representing coded characters to be displayed column by successive column. A character generator responsive to signals derived from the scan controller activates a controlled logic circuit so ionizing voltages are applied to predetermined row electrodes in the screen to activate the selected intersections to display the coded characters.