Simply-constructed digital radio communication system capable of changing transmission capacity mode
CA 2263775 C · Owner: Ohno, Katsumaru · Inventors: Ohno, Katsumaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a digital radio communication system for wireless bidirectional communication between a master station and a slave station, each of the master station and the slave station includes a antenna, a subscriber interface, a first signal processing circuit for converting a first continuous data signal from the subscriber interface into a first burst digital signal and allocating it to a first predetermined time slot, a single modulation circuit for modulating the output signal of the first signal processing circuit and transmitting a modulated signal to the antenna a single, demodulation circuit for demodulating a signal from the antenna and generating a second burst digital signal and 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 March 1, 1999 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 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.