Radio communication apparatus and transmission power controlling method
CA 2301088 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Hiramatsu, Katsuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An AAA receiving circuit 105 calculates reception weight of signals received by adaptive array antennas 101, and a direction of arrival estimating circuit 106 estimates a direction of arrival of the received signals. A demodulating circuit demodulates the received signals to separate transmission power control information. A radiation pattern calculating circuit 108 calculates directional gains based on the reception weight and the arrival direction of the received signals. A gain controlling circuit 109 calculates a correction value based on the directional gains and transmission power control information, and controls a gain of a transmission power amplifier. A transmission weight …
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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 June 25, 1999 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2021.
- 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.