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Expired Canadian patentCanada

Method and apparatus for encoding and decoding data in residue number system

CA 1318027 C · Owner: Takayama, Jun · Inventors: Takayama, Jun; Ninomiya, Takeshi; Fujita, Tadao

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Abstract From the Canadian patent

An encoder circuit so designed as to convert input data composed of binary codes into RNS data and provided with, a dividing means for dividing the input data into a plurality of data using fixed bits; a first ROM table circuit for applying weighted processing to the plurality of data and converting them into residue data for each fixed modulus; and a second ROM table circuit for converting the addition value of said residue data for each modulus into residue data of each corresponding modulus; and characterized in outputting residue data obtained via the second ROM table circuit as residue data composing the RNS data.

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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

  • Granted May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 12, 1988
GrantedMay 18, 1993
Term endedMay 18, 2010
Patent numberCA 1318027 C
Classification (IPC)H03M7/18

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 12, 1988Patent grantedMay 18, 1993Term endedMay 18, 2010

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