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Expired Canadian patentCanada

Non-pll concurrent carrier clock synchronization

CA 1198170 A · Owner: Communications Satellite Corporation · Inventors: Wolejsza, Chester J.; Poklemba, John J.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Concurrent carrier and clock synchronization are derived from an input signal in interdependent loops without the use of phase look loop (PLL) circuitry in order to improve operation at higher bit rates. An acquisition detection signal is generated only in response to predetermined minimum errors in both the received signal amplitude and the recovered carrier phase.

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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 December 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 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.
FiledAugust 9, 1983
GrantedDecember 17, 1985
Term endedDecember 17, 2002
Patent numberCA 1198170 A
Classification (IPC)H04L7/02 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 9, 1983Patent grantedDec 17, 1985Term endedDec 17, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.