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Expired Canadian patentCanada

Method and apparatus for adjusting and readjusting an automatic corrector for a data signal transmission system

CA 1051524 A · Owner: Gretag Aktiengesellschaft · Inventors: Schaffauser, Hans; Miloradovic, Predrag

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Abstract From the Canadian patent

A method of adjusting and readjusting an automatic corrector for a data signal transmission system the, corrector serving to restore pulse-amplitude-modulated signals which have suffered linear distortions in a transmission channel. A transversal filter of the corrector receives during a first adjustment phase a reference signal sequence transmitted over the transmission channel and an identical reference signal produced at the receiving end to produce error signals which serve to adjust the transversal filter coefficients stored in the corrector. The filter coefficients are subdivided into at least two groups and during the first phase one group of filter coefficients is calculated with 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

  • Granted March 27, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 27, 1979
Term endedMarch 27, 1996
Patent numberCA 1051524 A
Classification (IPC)H03K5/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 27, 1979Term endedMarch 27, 1996

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