Receiver with direct quadrature sampling of the input signal
CA 2029802 C · Owner: Koninklijke Philips Electronics N.V. · Inventors: Rosenkranz, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1. Receiver with direct quadrature sampling of the input signal. 2.1 In a receiver in which a normal component and a quadrature component of a signal modulated on a carrier signal are directly produced by carrier signal sampling the analog-to-digital converter is controlled by means of periodically recurrent sampling pulses having a certain frequency. 2.2 In order to create enhanced selection options from the selectable carrier frequencies it is proposed by this invention to combine a plurality of equidistant sampling instants to a group and to select for the distance between the last sampling instant of one group and the first sampling instant of the next group a time interval different …
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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 November 13, 1990 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2012.
- 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.