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. 03, 2015
Filed:
Jun. 11, 2010
Tsutomu Yamada, Hitachinaka, JP;
Noritaka Matsumoto, Naka-gun, JP;
Kazuya Shimoyama, Hitachi, JP;
Yoshihito Sato, Hitachi, JP;
May Takada, Kawasaki, JP;
Masayuki Miyazaki, Tokyo, JP;
Tsutomu Yamada, Hitachinaka, JP;
Noritaka Matsumoto, Naka-gun, JP;
Kazuya Shimoyama, Hitachi, JP;
Yoshihito Sato, Hitachi, JP;
May Takada, Kawasaki, JP;
Masayuki Miyazaki, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A multistage relay communication systemincludes a trunk networkand branch networks(), each of which includes one or more communication apparatuses. The communication apparatuscan switch between a trunk mode to operate in the trunk networkand a branch mode to operate in the branch network. In the trunk network, the communication apparatuscarries out fixing of a communication path and redundancy of data based on a path table in order to achieve real-timeness and a data arrival rate. Meanwhile, in the branch network, when a communication failure occurs, the communication apparatusautonomously searches for a communication path and constructs a path table, in order to at least secure a data arrival rate even if real-timeness is impaired within an allowable range.