Radio communication apparatus which can quickly recover from misjudgement of levels of a multilevel modulated signal
CA 2120867 C · Owner: Matsumoto, Mariko · Inventors: Matsumoto, Mariko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a radio communication apparatus comprising a demodulator (12) for demodulating a multilevel modulated signal (10) into a time sequence of multilevel symbols which have symbol levels to define a variable pattern by a level difference between the symbol levels of at least two successive adjacent ones of the multilevel symbols a, coincidence detecting section (16) detects coincidence between the variable pattern and a predetermined pattern and calculates judgement levels when the variable pattern coincides with the predetermined pattern with a tolerance. A multilevel-to-binary converter (14) converts the time sequence of multilevel symbols into a binary signal of binary values by judging …
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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 April 8, 1994 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2016.
- 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
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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.