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. 20, 2015
Filed:
Oct. 11, 2011
Shinichi Akahane, Hachioji, JP;
Teruo Kaganoi, Funabashi, JP;
Tomohiko Kohno, Yokohama, JP;
Kazuo Sugai, Hadano, JP;
Shinichi Akahane, Hachioji, JP;
Teruo Kaganoi, Funabashi, JP;
Tomohiko Kohno, Yokohama, JP;
Kazuo Sugai, Hadano, JP;
ALAXALA Networks Corporation, Kanagawa, JP;
Abstract
The communication device has a frame transfer unit that executes frame transfer via the first communication link and the second communication link, a link confirmation frame sending unit, and a return link confirmation frame monitoring unit. The link confirmation frame sending unit causes the frame transfer processing unit to send a link confirmation frame for use in confirming a normal link status via the first communication link from the communication device to the counterpart communication device. The return link confirmation frame monitoring unit performs fault detection of the first and second communication links by monitoring a return link confirmation frame which is to be returned from the counterpart communication device to the communication device via the second communication link when the counterpart communication device receives the link confirmation frame via the first communication link.