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Expired Canadian patentCanada

A method and apparatus of encoding and decoding data using low density parity check code in a wireless communication system

CA 2569500 C · Owner: Cho, Ki Hyoung · Inventors: Oh, Min Seok; Cho, Ki Hyoung; Chung, Kyu Hyuk

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Abstract From the Canadian patent

A method of encoding data using low density parity check (LDPC) code defined by a mxn parity check matrix is disclosed. More specifically the method , includes encoding input source data using the parity check matrix wherein the , parity check matrix comprises a plurality of zxz sub-matrices of which row weights and column weights are '0' or '1 '.

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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 June 24, 2005 and granted April 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2025.
  • 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.
FiledJune 24, 2005
GrantedApril 8, 2014
Term endedJune 24, 2025
Patent numberCA 2569500 C
Classification (IPC)H03M13/11

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJune 24, 2005Patent grantedApril 8, 2014Term endedJune 24, 2025

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