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. 04, 1989
Filed:
Jul. 27, 1987
Agency of Industrial Science and Technology, Tokyo, JP;
Ministry of International Trade and Industry, Tokyo, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
An optical information processing device includes a light receiving and driving circuit including photo voltaic elements adapted to receive an incident light and to produce a drive voltage, and an optical shutter driven by the drive voltage produced by the light receiving and driving circuit. With this structure, various basic logical operations are performed by the device according to the present invention. As a feature of the invention, the device receives a pair of incident lights having a complementary relation in strength with each other and produces a pair of output lights from the optical shutters which also are complementary in strength with each other. Thus, the possibility of errors in logical operations is greatly reduced.