Transmission method with fading distortion or frequency offset compensation
CA 2415806 A1 · Owner: Okamoto, Eiji · Inventors: Okamoto, Eiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transmission method with compensation for fading distortion or frequency offset distortion in digital communications using pilot signals comprises the , steps of:, receiving modulated radiofrequency signals demodulating the digital signals , carried by said radiofrequency signals, extracting pilot signals from the received radiofrequency signals or demodulated digital signals finding a spectrum of , the, extracted piton signals finding fading components or frequency-offset components, from said spectrum, and using one of these components to compensate the received, radiofrequency signal or estimate the original digital signal from the demodulated, digital signals.
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 January 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2025.
- 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.