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. 14, 2017
Filed:
Feb. 19, 2013
Tetsuya Shigeeda, Tokyo, JP;
Tetsuya Shigeeda, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
In a configuration where an apparatus network is connected to a backbone network at two points, a first apparatus and a first switch device are normally communicatively connected to each other and also communication between a second apparatus and a second switch device is normally disconnected. The first apparatus monitors the link state with the first switch device. The second apparatus queries the first apparatus about the link state. When the first apparatus and the first switch device are not communicatively connected to each other or when the second apparatus cannot communicate with the first apparatus via the apparatus network, the second apparatus cancels the disconnected state with the second switch device.