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Expired Canadian patentCanada

Process for restoring to shape a deformed numerical signal and device for putting the process into effect

CA 1215134 A · Owner: Kerdiles, Jean-Francois · Inventors: Milon, Jean; Kerdiles, Jean-Francois

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Abstract From the Canadian patent

The invention relates to a process for restoring to shape a deformed numerical signal and also to a device for putting the process into effect. The process consists in working out an intermediate analog signal SI for the signal S, noting the times of intersection of the signals SI and S, and working out a binary signal N which passes from one binary state to the other at each of the times of intersection. The binary signal SN is identical with the signal S1, which is itself equal to the signal S before the deformation of such signal S. The working out of the intermediate signal SI depends on its law of evolution and on contraints imposed on its slope and amplitude. Application to numerical …

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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 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1984
GrantedDecember 9, 1986
Term endedDecember 9, 2003
Patent numberCA 1215134 A
Classification (IPC)H03K5/08 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 9, 1984Patent grantedDec 9, 1986Term endedDec 9, 2003

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