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:
Apr. 20, 2004
Filed:
Mar. 12, 2001
Koji Asahi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
To provide an optical cross-connect apparatus capable of, even in the case where a light switch becomes large-sized, supervising quality and management information of light signals passing through inside the apparatus with low-cost configuration. For each of the light signals inputted from n pieces of input port, path setting in a branch connection state is performed in order following a control signal from a control section by connecting any one of n pieces of output port with a predetermined supervising port at n×m light SW. Quality and management information are detected from light signals outputted from a supervising output port at a light signal detecting section, and the quality and the management information are supervised at a light signal supervising section.