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Expired Canadian patentCanada

Cluster storage apparatus for post processing error correction of a character recognition machine

CA 1062811 A · Owner: International Business Machines Corporation · Inventors: Chaires, Anne M.; Kocher, Donald F.; Rosenbaum, Walter S.

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Abstract From the Canadian patent

A CHARACTER RECOGNITION MACHINE ABSTRACT OF THE DISCLOSURE:, A cluster storage apparatus is disclosed for outputting groups of valid alpha words as potential candidates for the correct form of an alpha word misrecognized by a character recognition machine. Groups of alpha words are arranged in the cluster storage apparatus such that adjacent locations contain alpha words having similar character recognition misread propensities. Alpha words which have been determined to be misrecognized, are input to the cluster storage apparatus. Numerical values assigned to the characters of which the input word is composed are used, to calculate the address of that group of valid alpha words having …

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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 September 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedSeptember 18, 1979
Term endedSeptember 18, 1996
Patent numberCA 1062811 A
Classification (IPC)G06K9/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedSep 18, 1979Term endedSep 18, 1996

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