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Expired Canadian patentCanada

Apparatus and method for controlling a demultiplexer and a multiplexer used for rate matching in a mobile communication system

CA 2661807 C · Owner: Samsung Electronics Co. Ltd. · Inventors: Choi, Soon-Jae; Kim, Beong-Jo; Kim, Se-Hyoung

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Abstract From the Canadian patent

transmitting device in a mobile communication system is disclosed. In the transmitting device an encoder receives an information bit stream in a frame which is as long as an integer multiple of a predetermined value and generates an information symbol, a first parity symbol and a second parity symbol by encoding each information bit. An interleaver sequentially arranges the information symbols and the first and second parity symbols by rows in an array with an integer number of rows and an integer number of columns. The interleaver reorders the columns in the array according to a predetermined rule. The interleaver further outputs a plurality of radio frames in a stream by reading 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 July 8, 2000 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 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.
FiledJuly 8, 2000
GrantedMay 22, 2012
Term endedJuly 8, 2020
Patent numberCA 2661807 C
Classification (IPC)H04W80/00 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedJuly 8, 2000Patent grantedMay 22, 2012Term endedJuly 8, 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.