Method and device for pulse shaping qpsk signals
CA 2483985 A1 · Owner: Washakowski, Steven · Inventors: Washakowski, Steven; Brodsky, Wesley G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A baseband shaping device includes a plurality of coefficient memories each , memory having an input address bus a multiplexor input and a coefficient value output. The device further includes a plurality shift registers each , having an input coupled to a respective one of the coefficient value outputs a digital to analog clock input and an output. The device further includes a plurality of negative value circuits, each circuit having an input coupled to a respective one of the first shift register outputs and an output a , plurality of multiplexors, each having a first input coupled to a respective one of the first shift register outputs and a second input coupled to a respective one …
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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 April 23, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2024.
- 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.