Programmable noise bandwidth reduction by means of digital averaging
CA 2102500 C · Owner: Communications Satellite Corporation · Inventors: Poklemba, John J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pre-averager for digitally averaging the samples of an input data signal (26) over two or more symbols the averaging interval , being defined by the input sampling rate divided by the output sampling rate. As the averaged sample is clocked (290 29e) to a suitable, detector at a much slower rate than the input signal sampling rate the noise bandwith at the input to the detector is reduced. The pre-averager forms a data filter (50a, 50b 50c, 50d) having an output, sampling rate of one sample per symbol of received data. More specifically, selected ones of a plurality of samples accumulated (28a 28b, 28c, 28d) over two or more symbol intervals are output in response to clock signals at a …
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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 July 16, 1992 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2014.
- 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
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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.