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:
Mar. 12, 2002
Filed:
Feb. 12, 1999
Hideaki Arao, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In a control device for processing an optical supervisory transmission signal necessary for network management between transmission devices in a wavelength-multiplexed optical transmission system, there is provided a main signal device that amplifies a main signal light which is wavelength-multiplexed. A supervisory control device processes supervisory control information. A transmission path connects the main signal device and the supervisory control device. The supervisory control information is defined by mapping items of data of the optical supervisory transmission signal into an overhead defined in another optical transmission system. The main signal device converts the optical supervisory transmission signal dropped from the main signal light into the supervisory control information, which is sent to the supervisory control device. The supervisory control device processes the supervisory control information received as the overhead.