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:
Sep. 22, 1987
Filed:
Sep. 29, 1986
Applicant:
Inventor:
Ichiro Sado, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382 13 ; 178 18 ;
Abstract
An input device has a matrix input unit having a plurality of switches for inputting a pattern, a signal generator for generating signals identifying the actuation of the switches, and a discriminator responsive to the signals from the signal generator to discriminate the actuated one of the switches. The discriminator discriminates the actuated switch by checking an interval of the signals from the sequentially actuated switches.