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:
Apr. 07, 2020
Filed:
Nov. 22, 2016
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Takuya Oda, Yokosuka, JP;
Tetsuro Inui, Yokosuka, JP;
Akira Hirano, Yokosuka, JP;
Wataru Imajuku, Yokosuka, JP;
Shoukei Kobayashi, Yokosuka, JP;
Takafumi Tanaka, Yokosuka, JP;
Yutaka Miyamoto, Yokosuka, JP;
Hidehiko Takara, Yokosuka, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A communication system which includes: three or more nodes; a multi-core fiber having a plurality of cores, the multi-core fiber being used in at least a partial segment of a connection between the nodes; a detection signal output unit configured to output a fault detection signal transmitted by the core provided in the multi-core fiber configured to connect together the nodes; and a fault detection unit configured to determine whether a fault has occurred between the nodes on the basis of a detection result of the fault detection signal.