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:
Nov. 01, 1977
Filed:
Aug. 16, 1976
Karvel Kuhn Thornber, Berkeley Heights, NJ (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A crosspoint (X-Y) matrix array of electrically reprogrammable memory logic elements, such as an array of dual dielectric insulated gate field effect transistor (IGFET) structures, is interconnected in a single electrically reprogrammable diode logic array circuit, both for computing the logic function(s) of many variables and for writing and erasing the function(s). Each logic element's high current path is in series with a separate unidirectional diode in order to prevent sneak paths. Electrical access circuitry is also provided for computing the logic function(s) of many variables, each funtion being electrically alterable.