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. 11, 2003
Filed:
Sep. 29, 1999
Applicant:
Inventor:
Miklos Sandorfi, Foxboro, MA (US);
Assignee:
EMC Corporation, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/108 ; G01R 3/128 ; H04L 1/00 ; G06E 1/100 ;
U.S. Cl.
CPC ...
G01R 3/108 ; G01R 3/128 ; H04L 1/00 ; G06E 1/100 ;
Abstract
A circuit for detecting a fault on a bi-directional data line. The circuit includes: an input/output terminal connected to one end of the bi-directional line; a data receiver having an input coupled to a second end of the bi-directional line for receiving data on the terminal; a data driver having an output coupled to the second end of the bi-directional line for producing data on the terminal; an XOR gate having a pair of inputs, one being coupled to an output of the data receiver and the other being coupled to an input of the data driver, for determining whether data produced by the data driver is received by the data receiver.