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:
Jan. 01, 2002
Filed:
Nov. 30, 1998
Daisuke Uehara, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical ADM apparatus ( ) receives a WDM optical signal comprising first through n-th main signal components (&lgr; n) and a monitor/control signal component (&lgr;sv). A monitor/control signal terminator ( ) terminates the monitor/control signal component to produce first through n-th monitor/control signals. When a destination node ID represented by one of the first through the n-th monitor/control signals is coincident with an ID of the optical ADM apparatus ( ), the monitor/control signal processor ( ) produces a specifying signal specifying, as a specified main signal component, one of the first through the n-th main signal components (&lgr; n) that corresponds to the above-mentioned one of the first through the n-th monitor/control signals. The monitor/control signal processor ( ) further produces the first through the n-th monitor/control signals in which an origination node ID corresponding to the specified main signal component is rewritten into the ID of the optical ADM apparatus ( ) while the destination node ID corresponding to the specified main signal component is rewritten into an ID of a different node. When the specified signal is supplied from the monitor/control signal processor ( ), an ADM unit ( ) drops or separates the specified main signal component alone from the first through the n-th main signal components to output the specified main signal component.