System and method for transmitting data on return path of a cable television system
CA 2394231 A1 · Owner: Levinson, Frank H. · Inventors: Mostert, Willem A.; Sage, Gerald F.; Levinson, Frank H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical signal return path system includes a transmitter (200) having a sample clock generator (212) for generating a sample clock (213) and an RF signal receiver (202-1) for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples (Data-1) at a rate determined by the sample clock. Supplemental channel circuitry (202-2) provides a second data stream (Data-2). A multiplexor (204) receives and combines the first data stream (Data-1) and second data stream (Data-2) and , an optical transmitter (206) converts the combined data stream into a serialized optical data signal for transmission over an optical fiber (210). The second data …
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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 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2022.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.