Circuit for generating signals in phase quadrature and associated methodtherefor
CA 2127271 C · Owner: Motorola, Inc. · Inventors: Gillig, Steven F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A quadrature generator (975, 1075) for generating a pair of pulse trains maintained in perfect phase quadrature with one another. The quadrature generator (975 1075) includes a feedback control loop for altering the duty cycle of an oscillating signal applied to a master-slave flip-flop pair (450, 650) configured to generate a pair of pulse trains maintained in a relative phase relationship. The feedback control loop controls the duty cycle of the oscillating signal applied to the master-slave flip-flop pair (54 58) which, in turn, is determinative, of the phase relationship between the pulse train pair generated by the master-slave flip-flop pair (54 58). When the pulse trains generated, …
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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 October 29, 1993 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.