Decision feedback equalizer for a digital signal receiving system
CA 2300796 A1 · Owner: Abe, Yoshinori · Inventors: Tahara, Kazushi; Abe, Yoshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The adder subtracts the estimated echo from the input symbol to generate the demodulated symbol and the Trellis decoder, applies Trellis decoding onto the demodulated symbol to generate maximum likelihood transmission symbol sequence. The feedback register stores estimated transmission symbol values for a feedback filter, and A coefficient register stores coefficient values for the feedback filter. The feedback register updating unit generates the estimated transmission symbol and the estimated transmission symbol value corresponding to the next time point based on the demodulated symbol the maximum likelihood, transmission symbol sequence and the estimated transmission symbol corresponding …
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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 March 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 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.