Computational structures for the frequency-domain analysis of signals and systems
CA 2086174 C · Owner: Ahmad, M. Omair · Inventors: Ahmad, M. Omair; Swamy, M. N. Srikanta; Sundararajan, Duraisamy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Since the invention of the radix-2 structure for the computation of the discrete Fourier transform (DFT) by Cooley and Tukey in 1965 the DFT has been widely used for the, frequency-domain analysis and design of signals and systems in communications digital, signal processing, and in other areas of science and engineering. While the Cooley-Tukey structure is simpler, regular, and efficient it has some drawbacks such as more complex multiplications than required by higher-radix structures and the overhead operations of, bit-reversal and data-swapping. The present invention provides a large family of radix-2 structures for the computation of the DFT of a discrete signal of N samples. A member …
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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 December 23, 1992 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.