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:
Jun. 19, 2018
Filed:
Dec. 18, 2015
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventor:
Hiroshi Okita, Yamanashi, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/08 (2006.01); G06F 11/22 (2006.01); G01R 31/02 (2006.01);
U.S. Cl.
CPC ...
G06F 11/2221 (2013.01); G01R 31/024 (2013.01); G01R 31/086 (2013.01);
Abstract
A matrix circuit includes, besides a plurality of common signal lines and a plurality of data signal lines arranged in a matrix, a plurality of monitoring signal lines that allow states of the common signal lines to be monitored. Inputs to the monitoring signal lines during one scan of the common signal lines are stored such that a fault including a ground fault, a short circuit, or disconnection on any of the common signal lines is detected and a location of the faulty common signal line is identified based on the stored inputs to the monitoring signal lines.