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, 1980
Filed:
Aug. 11, 1978
Applicant:
Inventor:
Junichi Tabata, Tokyo, JP;
Assignee:
Kabushiki Kaisha Daini Seikosha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G09F / ;
U.S. Cl.
CPC ...
340785 ; 340763 ;
Abstract
A driving system for an electro chromic display, comprising a display information signal generator, a generator of a coloring pulse and an erasing pulse, a memory time counter, a refresh pulse arrange circuit and a driver. The display means is refreshed when a memory time determined by the memory time counter has elapsed, to maintain color regularity.