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. 22, 2013
Filed:
Dec. 25, 2008
Seigo Murashige, Utsunomiya, JP;
Hiroyuki Abe, Utsunomiya, JP;
Junichi Kobayashi, Tokyo, JP;
Takashi Majima, Yokohama, JP;
Yuji Sasaki, Yokohama, JP;
Seigo Murashige, Utsunomiya, JP;
Hiroyuki Abe, Utsunomiya, JP;
Junichi Kobayashi, Tokyo, JP;
Takashi Majima, Yokohama, JP;
Yuji Sasaki, Yokohama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
A redundant communication system includes a first control device which calculates a control command value of an electric power device, and outputs first and second command signals; a second control device which controls the electric power device on the basis of one of the first and second control command values; and primary and secondary communication lines for respectively transmitting the first and second command signals to the second control device. The second control device comprises: a primary communication line abnormality determining unit which determines that the primary communication line is abnormal when a non-reception state or an abnormality state of the first command signal continues during a predetermined period; and a control command value switching unit which selects one of the first and second control command values in a switching manner and switches the selection from the first to the second control command value within the predetermined period.