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Expired Canadian patentCanada

High speed signaling for interfacing vlsi cmos circuits

CA 2323446 C · Owner: Jazio, Inc. · Inventors: Haq, Ejaz Ul

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 system of the present invention uses small swing differential source synchronous voltage and timing reference (SSVTR and /SSVTR) signals to compare single-ended signals of the same slew rate generated at the same time from the same integrated circuit for high frequency signaling. The SSVTR and /SSVTR signals toggle every time the valid signals are driven by the transmitting integrated circuit. Each signal receiver includes two comparators one for , comparing the signal against SSVTR and the other for comparing the signal against /SSVTR. A present signal binary value determines which comparator is coupled to the receiver output, optionally by using XOR logic with SSVTR and /SSVTR. …

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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

  • Filed March 8, 1999 and granted November 8, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1999
GrantedNovember 8, 2016
Term endedMarch 8, 2019
Patent numberCA 2323446 C
Classification (IPC)H03K5/15 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedMarch 8, 1999Patent grantedNov 8, 2016Term endedMarch 8, 2019

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