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:
Jul. 23, 2002
Filed:
Nov. 24, 1998
Applicant:
Inventor:
Jonathan Paul King, Epping, GB;
Assignee:
Nortel Networks Limited, St. Laurent, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/400 ; H04J 1/402 ; H04J 1/408 ;
U.S. Cl.
CPC ...
H04J 1/400 ; H04J 1/402 ; H04J 1/408 ;
Abstract
A method of tagging individual wavelength division multiplexed channels within a plurality of said channels. The method comprises the step of creating a tagging tone in the form of an analogue spectral line tone, by providing a series of regularly spaced time slots substantially throughout each of said tagged channels for receipt of binary tagging pulses. The binary tagging pulses in each tagged channel are arranged in a different manner to provide a characteristic tag for each tagged channel.