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Expired Canadian patentCanada

Adaptive fec codeword management

CA 2548743 C · Owner: Adaptive Spectrum And Signal Alignment, Incorporated · Inventors: Cioffi, John M.

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Abstract From the Canadian patent

Adaptive FEC coding is used to adjust the codeword composition of FEC codewords in a communication system. A codeword composition ratio may be adjusted in response to variance of a measured transmission error value from a target transmission error value in the system. The codeword composition ratio may be any quantity or value that represents the relation between the payload and parity bytes in the applicable FEC coding scheme. Adjustment of the codeword composition ratio may be adjusting parameters such as the N K and/or , R values in ADSL1 systems or the INP and/or maximum interleaving delay values in ADSL2 systems. A controller may be used to monitor analyze and adjust the , …

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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 December 2, 2004 and granted November 24, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 2, 2004
GrantedNovember 24, 2015
Term endedDecember 2, 2024
Patent numberCA 2548743 C
Classification (IPC)H04L1/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 2, 2004Patent grantedNov 24, 2015Term endedDec 2, 2024

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