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Expired Canadian patentCanada

Clock pulse regenerator

CA 1115356 A · Owner: Nippon Electric Co. Ltd. · Inventors: Kazama, Shigeru; Kage, Kouzou

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

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Abstract From the Canadian patent

In a clock pulse regenerator for generating a clock pulse sequence in response to an incoming digital data signal there is described a regen-, erator which produces the clock pulse sequence substantially free from phase jitter and phase deviation. From an input digital data an oscillator pro-, duces a sequence of first pulses at a frequency greater than that of the input signal. In response to the first pulses a first counter generates a, sequence of regenerated clock pulses. The input digital signal and the regenerated clock pulses are gated to form a gate pulse having a pulse width proportional to the phase difference between the two signals. The gate pulse is selectively transmitted …

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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 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 19, 1978
GrantedDecember 29, 1981
Term endedDecember 29, 1998
Patent numberCA 1115356 A
Classification (IPC)H04J3/06 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedDec 19, 1978Patent grantedDec 29, 1981Term endedDec 29, 1998

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