Simultaneous analog and digital communication
CA 2125053 A1 · Owner: Bremer, Gordon · Inventors: Smith, Richard Kent; Holmquist, Kurt Ervin; Chapman, Joseph Quinn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A method and apparatus for control of concurrent communication of analog information and digital information. In general terms when the communication channel is, viewed as a multi-dimensional space the digital information signal is divided into symbols and the symbols are mapped onto the signal space with a preset distance between them. The analog signal generally limited in magnitude to less than the distance separating the symbols, is converted to component signals and added (i.e. vector addition) to the symbols. The sum signal is then transmitted to the receiver where the symbols are detected and subtracted from the received signal to yield the analog signal components. The …
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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 June 3, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2016.
- 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.