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:
Sep. 17, 1985
Filed:
Apr. 14, 1982
Hiroshi Kamimura, Hitachi, JP;
Tetsuo Ito, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A distributed control system wherein a plurality of controlled objects are normally controlled by independent controllers, respectively, and each of the controllers has a monitoring function to monitor status of at least one of other controllers and a backup control function to control the controlled object normally controlled by the one controller when the one controller becomes out of order is arranged such that a main transmission path is provided which has sections respectively corresponding to the controllers and the signal transmission necessary for normal control of the controlled object associated with each controller, monitoring of status of at least one of other controllers and backup control of the one controller is effected by using the section of the main transmission path corresponding to the one controller.