Simultaneous transmission of voice and non-voice data on a single narrowband connection
CA 2312336 A1 · Owner: Leijonhufvud, Gosta · Inventors: Leijonhufvud, Gosta; Petersen, Lars-Goran
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a publically switched telephone network (PSTN) a method and a system for , simultaneously and independently multiplexing voice and non-voice data over a single, commonly shared PSTN access line. This is accomplished by packetizing the voice and non-voice data into minicells and then multiplexing the , minicells into a single data stream for transportation across the commonly shared PSTN access line. Once the minicells containing either voice or nonvoice data have been transported over the single commonly shared PSTN access , line, the data is simultaneously and independently routed to distinctly different end-users according to the routing information stored in the header portion of …
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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 November 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2020.
- 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.