Modem circuitry
CA 1182526 A · Owner: Codex Corporation · Inventors: Qureshi, Shahid U.H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, Modem apparatus comprising circuitry featuring two loosely coupled microprocessors; and a receiver featuring means for inhibiting the updating of adaptive equalizer coefficients in the presence of periodic data improved, automatic gain control and carrier detect/loss circuitry improved circuitry for filtering and demodulating received signals, and improved timing recovery and timing initialization circuitry. Background of the Invention This invention relates in several aspects to modem apparatus in which a modulated carrier signal represents digital bits, and in one aspect to modem apparatus in which a received, modulated double sideband carrier signal representing, …
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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 February 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2002.
- 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.