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Expired Canadian patentCanada

Correlation pulse generator

CA 1318368 C · Owner: Uchida, Yoshitaka · Inventors: Mori, Masaharu; Hamatsu, Masahiro; Uchida, Yoshitaka

CIPO record

Overview

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

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Abstract From the Canadian patent

A correlation pulse generator used in a receiver of a spread spectrum communication system comprises peak hold circuit for holding peak values of positive and negative correlation spikes, threshold setting circuits for generating thresholds based on the peak values and a, comparing circuit for comparing the threshold with a correlation spike to generate a correlation pulse so, that when a level difference exists between positive and negative correlation spike levels of a correlation output, their peaks can be held independently and, thresholds based on the peaks can be generated independently.

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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 May 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
  • 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 29, 1988
GrantedMay 25, 1993
Term endedMay 25, 2010
Patent numberCA 1318368 C
Classification (IPC)H03K5/08 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 29, 1988Patent grantedMay 25, 1993Term endedMay 25, 2010

Sources & verification

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