Parallel mode adaptive transversal equalizer for high-speed digital communications system
CA 2007922 C · Owner: Mizoguchi, Shoichi · Inventors: Mizoguchi, Shoichi; Matsuura, Hideki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a parallel-mode adaptive transversal equalizer P- and Q-channel, data streams from A/D converters (1,5) are respectively passed through the tapped-delay lines of transversal filters (2,6) on the one hand, and are, one-symbol delayed on the other, by delay circuits (3,7,66,67) to produce (N-1) successively delayed P- and Q-channel data streams which are, respectively passed through the tapped delay lines of transversal filters (4; 63,8;64). In each transversal filter, symbols appearing at successive taps of the tapped-delay line are sampled and held for a duration of N symbols to produce first and second groups of stored symbols the stored symbols of, the first group being multiplied by …
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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 January 17, 1990 and granted July 27, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2012.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.