Digital demodulation system
CA 1292525 C · Owner: Yoshida, Yasuharu · Inventors: Yoshida, Yasuharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An AGC circuit for controlling an input level of a multi-level discriminator to an optimum one and a transversal equalizer capable of fully exhibiting an equalizing function thereof each, being installed in a digital demodulation system applicable to a multi-level communication system. The AGC circuit eliminates false pull-in to promote stable pull-in operations and is applicable not only to baseband signals having two or more levels but also to a 16 QAM system in microwave digital communication. Even when a demodulator is in an asynchronous state and input signals have significant intersymbol interference, the demodulation system is capable of being restored to normal to allow the …
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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
- Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.