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:
Jan. 05, 1982
Filed:
Dec. 31, 1979
Cyrus F Ault, Wheaton, IL (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A detection circuit for detecting a mismatch between the output signals of duplicated logic units (10a, 10b). The output terminals of one of the duplicated logic units are correspondingly connected to the output terminals of the other duplicated logic unit, while the power supply leads of the duplicated logic units (10a, 10b) are connected to a positive voltage source (32) through a current imbalance detector. Any mismatch between the output signals of the duplicated logic units (10a, 10b) will result in the detection of a large imbalance of current being supplied to the duplicated logic units (10a, 10b). Upon detection, the detector will generate an error signal.