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:
Feb. 07, 1984
Filed:
Jan. 26, 1982
Applicant:
Inventors:
Herve Beranger, Fontainebleau, FR;
Armand Brunin, LeMee, FR;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; H03K / ;
U.S. Cl.
CPC ...
371 49 ; 307471 ;
Abstract
An Exclusive OR circuit with at least two inputs (1 and 2) which exhibits a good immunity to noise. The circuit comprises diodes (D1 and D2) and two transistors (T1 and T2) which have their emitters connected to a reference voltage VR and produce AB at C1. Transistors (T 14 and T5) produce AB at C2, and output transistors (T13 and T6) produce ##STR1## at 3. This circuit can advantageously be used to realize a parity checking circuit.