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. 20, 1987
Filed:
Aug. 19, 1985
Shyusuke Endo, Mobara, JP;
Naofumi Aoyama, Mobara, JP;
Toshihiko Yabuuchi, Mobara, JP;
Toshiyuki Sakuma, Isumi, JP;
Kiyoshige Kinugawa, Chosei, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Between a liquid crystal module and a control circuit for controlling said liquid crystal module, there are provided that a counter circuit for counting down a timing signal given by said control circuit and an exclusive-OR circuit whose inputs are square wave pulses delivered from said counter circuit and square wave pulses given by said control circuit with a period of twice the frame period. The polarity of voltages applied to liquid crystal module is reversed by square wave pulses delivered from the exclusive-OR circuit with frequency higher than the frame frequency.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile