Filter bank
CA 1291279 C · Owner: Gockler, Heinz · Inventors: Gockler, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter bank for frequency demultiplexing or multiplexing, respectively, of L channel signals. The filter bank is composed of L transversal filters (non-recursive filters that is, filters having an impulse response of finite duration having complex valued coefficients, for real value input signals and complex value output signals and vice versa and a sampling rate at the output which is reduced or increased, respectively by a factor of, M. At least one of the L filters is realized by cascading at least two filters each having complex valued coefficients; in each one of these filters F1, ... Fq, ... FQ the sampling rate is, reduced or increased respectively, by a factor of Mq > 1 and = M;, …
Read the whole patent
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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.