Method and system for exchanging information between multimedia network nodes
CA 2379159 C · Owner: Noguera-Rodriguez, Juan · Inventors: Graf, Leslie Gary; Hollis, Mark Alan; Groves, Christian Norman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates generally to the transmission of video audio , and/or data signals between nodes in multimedia networks and in particular to , the exchange of control information in the form of capabilities information between such nodes. The invention is suitable for use in the negotiation of the capabilities of nodes, notably in H.323 and SIP multimedia networks. The present invention provides a method and system of inband capability negotiation or signalling including logically mapping multimedia capabilities information to inband messages in order to establish the format for the passing of the multimedia information from the first network to the second network. 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 11, 2000 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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.