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Expired Canadian patentCanada

Satellite communication routing arbitration techniques

CA 2295280 C · Owner: Gregoire, Darren R. · Inventors: Gregoire, Darren R.; Takahashi, Scott M.; Wong, Roland Y.

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Abstract From the Canadian patent

A satellite communication system which performs switching on data cells. A switch (80) receives the data cells at a set of input ports (IP1-IP128) and directs them to, a set of output ports (OP1 - OP128). In order to arbitrate input data cells contending for, the same output port, decision factor codes and routing codes are serially conducted to, input registers (210), and a pseudo-random sequence code is appended. The combined codes are ordered by routing code in a decoder (220). The code with the highest decision factor code is selected in one or more determinators (230 and, 240). The selected code is identified by a bit in a result register (250).

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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 January 12, 2000 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 2000
GrantedSeptember 17, 2002
Term endedJanuary 12, 2020
Patent numberCA 2295280 C
Classification (IPC)H04B7/18 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJan 12, 2000Patent grantedSep 17, 2002Term endedJan 12, 2020

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