Phase compensation method and apparatus
CA 2102108 C · Owner: Motorola, Inc. · Inventors: Larosa, Christopher P.; Carney, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present disclosure includes a discussion of a method of compensating for distortion of a received signal's phase. The distortion is caused by the asymmetrical characteristics of a voltage limiter (301). This compensation allows the received signal (115) to be sampled at the positive and negative zero-crossings reducing the requirements of a local oscillator in a radiotelephone system. First, the phase of the received signal is sampled at the positive and negative zero-crossings, forming a corresponding positive-crossing (401) and a negative-crossing (407) phase value for the received signal. Second, the negative-crossing and positive-crossing phase values are combined forming a …
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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 January 21, 1993 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.