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:
Aug. 26, 2014
Filed:
Feb. 29, 2012
Kouichi Yokoura, Kawasaki, JP;
Motoo Futami, Hitachiota, JP;
Kenji Takeda, Mito, JP;
Shin Yamauchi, Mito, JP;
Takeshi Uchida, Kasukabe, JP;
Kouichi Yokoura, Kawasaki, JP;
Motoo Futami, Hitachiota, JP;
Kenji Takeda, Mito, JP;
Shin Yamauchi, Mito, JP;
Takeshi Uchida, Kasukabe, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
When detecting a fault of a master control device, a slave control device refers to master-device-line information, and obtains line information to establish a connection with the other master control device. The slave control device transmits connection request information to the master control device extracted from the other master control devices. The other master control device determines whether or not it is connectable with the slave control device that has transmitted the connection request information, and transmits a determination result as connectability information. The slave control device switches a communication line to the other master control device when the received connectability information indicates the connectable status.