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Expired Canadian patentCanada

Simple-code encoder/decoder

CA 1289254 C · Owner: Labarge, Steven B. · Inventors: Waggoner, Bruce; Labarge, Steven B.

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

A Simple Code encoder/decoder converts a ternary or bipolar, signal having a strong clock component into a binary signal while maintaining the strong clock component for processing with digital equipment. The Simple Code is high for each positive value of the bipolar signal, low for each negative value of the bipolar signal, and alternates high/low for each zero value of the bipolar signal. The encoder uses an extractor circuit to generate a +PULSE signal, a -PULSE signal and a CLOCK signal from the bipolar signal. The +PULSE and CLOCK signals are combined to produce an intermediate binary signal and, the intermediate binary signal is combined with the -PULSE signal to produce the Simple …

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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 September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
  • 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 31, 1988
GrantedSeptember 17, 1991
Term endedSeptember 17, 2008
Patent numberCA 1289254 C
Classification (IPC)H03M5/18

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 31, 1988Patent grantedSep 17, 1991Term endedSep 17, 2008

Sources & verification

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