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. 18, 2012
Filed:
Nov. 10, 2005
Keiichi Oguro, Kawasaki, JP;
Yukihiro Watanabe, Kawasaki, JP;
Kuniaki Shimada, Kawasaki, JP;
Ken Yokoyama, Kawasaki, JP;
Keiichi Oguro, Kawasaki, JP;
Yukihiro Watanabe, Kawasaki, JP;
Kuniaki Shimada, Kawasaki, JP;
Ken Yokoyama, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The communication availability information between a plurality of transmitters and a plurality of destinations before the communication state between a transmitter and a destinations in a communication network changes from available to unavailable is compared, layer by layer from an upper layer toward a lower layer, with the communication availability information after change, and destinations in paths where the communication state has changed from available to unavailable are grouped. Thus, the communication network is divided into a plurality of affected ranges and an interface of a device located at the border between the affected ranges is deduced as a fault occurrence point.