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:
Feb. 24, 2015
Filed:
Jun. 25, 2012
Katsuhiro Shirai, Kawasaki, JP;
Koji Takeguchi, Kawasaki, JP;
Takashi Honda, Kawasaki, JP;
Masahiro Shioda, Kawasaki, JP;
Katsuhiro Shirai, Kawasaki, JP;
Koji Takeguchi, Kawasaki, JP;
Takashi Honda, Kawasaki, JP;
Masahiro Shioda, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A node device in an optical transport ring network including plural node devices connected in a ring form using plural optical transmission paths so that optical transport frames of a working line and a protection line are transmitted using the plural optical transmission paths, includes a control information transmitter, when a failure occurs in the optical transmission paths, transmitting the optical transport frame to an opposing node device as a transmission destination node in the optical transmission paths, the optical transport frame including switching control information; and a switcher receiving the optical transport frame including switching control information, the optical transport frame being transmitted to the node device as the transmission destination node, forming a loop back to fold a transmission path between the plural optical transmission paths, and switching the optical transmission path from the work line to the protection line.