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:
Mar. 11, 1986
Filed:
Sep. 26, 1983
Beeman N Fallwell, Jr, Boca Raton, FL (US);
Matt A Kaltenbach, Delray Beach, FL (US);
William B Ott, Lake Worth, FL (US);
International Business Machines Corp., Armonk, NY (US);
Abstract
In a local area network for data communications, stations which distributively control their access to a common bus or other medium are able to identify the location of any 'hot' station transmitter (one stuck continuously in an 'on' condition which cannot be isolated from the medium). Such networks are effectively disabled by a hot carrier, since each station conditions its access on sensing the medium as previously idle. The present 'loop test' method permits all stations in the network to quickly establish the location of a hot transmitter, and thereby quickly direct field repair personnel to that location. It also permits operators to take action to physically disconnect the faulty transmitter from the medium, so that the other stations may continue to use the network until the fault is repaired.