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:
Oct. 29, 2002
Filed:
Oct. 31, 2001
Hiroshi Ando, Tokyo, JP;
Kunikazu Koura, Tokyo, JP;
Hiroshi Gokan, Tokyo, JP;
Nobukazu Takeuchi, Tokyo, JP;
Shougo Tatsumi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A cmmunications control system for elevators having control units including at least respective car control units and elevator hall registration control units, each of the control units having a node, the nodes being connected to each other via a network, and each of the nodes having a management table establishing correspondence between node number and network address. The elevator communications control system includes a node acting as a master when a first network address corresponding to the node number of this node is, upon referring to the management table, a specific address in the management table, and sending to all other nodes a broadcast communication to notify that the node is a temporary master having the first network address added and receives from another temporary master a broadcast communication for notifying that this other node is the temporary master having a second network address corresponding to the node number of the other temporary master added, if the first network address and the second network address conform to specific conditions.