Wavelength routing and switching mechanism for a photonic transport network
CA 2393648 A1 · Owner: Titchener, Jonathan · Inventors: Guy, John Peter; Smith, Anthony Vernon Walker; Titchener, Jonathan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A connection between a source node and a destination node is automatically routed and switched in a WDM photonic network 1 on receipt of, a connection request. A switching and routing mechanism selects a plurality of valid link paths using a path tree, where invalid branches are eliminated based on constraints received with the connection request and on a link and, path cost functions. A regenerator placement tree 25 is used for determining a plurality of viable regenerator paths for each valid link path. On the regenerator placement tree 25, non-viable branches are eliminated based on constraints received with the request and on regenerator availability at the intermediate nodes along the …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed July 17, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.