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:
Apr. 20, 1976
Filed:
Nov. 14, 1974
Tetsuo Sakai, Tokyo, JA;
Nippon Hoso Kyokai, Tokyo, JA;
Abstract
In a matrix type gas discharge display device comprising a number of discharge elements at the crossings of the rows and columns of the display matrix, a group of display anodes is disposed at each discharge element by using a corresponding number of insulated wires and by removing insulation of one wire at each discharge element, and such exposed portion is shifted to a successive one of the wires every one of the crossings in a column, so that when the field scanning is made in the column direction, each different anode wire in a group operates successively in cyclic order. The applied scanning voltage is so controlled as to make such successive operation of the anodes. By such a field scanning, each discharge element luminates for a duration which is an integral multiple due to such number, of the duration in the conventional type device provided with only one display anode for each discharge element. The brightness of the displayed picture is increased up to an extent by such integral multiple in a definite and stable manner, and thus noise in the displayed picture can be decreased.