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. 10, 1981
Filed:
Feb. 12, 1979
Richard C Eden, Thousand Oaks, CA (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A logic circuit is provided which uses Schottky barrier switching diodes to perform the 'OR' logic function on logic inputs. The outputs from the switching diodes control the gate of a field-effect transistor (FET) which provides logic inversion and gain. The source of the FET is grounded and its drain provides the output of the logic circuit. Bias current for the switching diodes and gate turn-off current for the FET are provided by a pull down, and a pull up is provided to operate the FET. In a second embodiment, two separate groups of switching diodes control separate gates of a dual-gated FET to provide a two-level 'OR/NAND' logic circuit. In a third embodiment, the outputs from a pair of two-level logic circuits are joined to provide a three-level 'OR/NAND/WIRED-AND' logic circuit.