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. 26, 1982
Filed:
Jul. 14, 1980
Applicant:
Inventors:
Hiroo Fujita, Sayama, JP;
Akira Tsuzuki, Tokyo, JP;
Assignee:
Citizen Watch Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340805 ; 340784 ; 3503 / ;
Abstract
A method and drive system for driving an electro-optical display device having a matrix of an n-number of digit electrodes having a plurality of electrodes groups spaced from one another, and a plurality of groups of segment electrodes associated with each of said electrode groups to provide a plurality of display elements at each of the groups. m-number of digit electrodes are simultaneously applied with excitation voltages each having at least two potential levels opposite in porality during an excitation period of: