Apparatus and method for control messaging in an optical network
CA 2329098 A1 · Owner: Chauvin, Jean Guy · Inventors: Song, Jian J.; Chauvin, Jean Guy; Vianna, Rudy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is found in a system comprising switches and cross-connects for optical networks, where the shelves and ports of the various units are connected to a central cross-connect system. These connections are assigned unique fibres on the basis of a single colour per fibre, which is, directly connected to a particular incoming or outgoing colour on a customer or network fibre. The connections are usually provided as a 'transparent' facility and the , optical bandwidth is in, some cases fully used by the data and protocols being carried on a fibre. These facts mean that it, is impractical to add any further data to that channel for use in verification of a connection. A, separate …
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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 December 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2022.
- 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.