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. 07, 2017
Filed:
May. 07, 2015
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Makoto Yasuda, Tsuchiura, JP;
Shigeru Tsubota, Tsuchiura, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A first redundancy device and a second redundancy device connected to the first redundancy device are provided. A third switching device has a first link with a first port group of the first switching device and has no link with the second switching device. A fourth switching device has a second link with a first port group of the second switching device and has no link with the first switching device. Here, a communication between the first redundancy device and the second redundancy device is performed through the first link when the first link has no fault, and the communication is performed through the second link when the first link has a fault and the second link has no fault.