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:
Jul. 08, 1986
Filed:
Mar. 21, 1983
Shigeru Matsuoka, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an information processing apparatus with an input device in the form of a keyboard, a multiplicity of switches associated with input keys on the keyboard are disposed in independent submatrices. When three or more keys in each submatrix are operated simultaneously, key input detection is stopped. The number of switches which are turned on in each scanning is registered and when the number is two at the most, addresses representative of the switches which are turned on are delivered out for inputting information. Key input at high speeds can be permitted and erroneous input can be prevented.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile