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Expired Canadian patentCanada

Image data processing apparatus that automatically sets a data compression rate

CA 2026503 C · Owner: Kakizaki, Mikio · Inventors: Izawa, Fumio; Yamauchi, Akira; Mimura, Hideki

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention is based on an electronic still camera for converting a taken optical image of a subject into digital image data, and recording it into a memory card incorporating semiconductor memories. The digital image data obtained from this electronic still camera is stored in a large-capacity recording medium through an exclusive recording device, or displayed in plural monitors or, stored on a disk or magnetic tape by existing recording devices, or even compressed, expanded, edited or processed so that it may satisfy versatile requests of users. Image data processing apparatus converts a taken optical image into digital image data, compresses the digital image data and records it in a …

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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 September 28, 1990 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1990
GrantedMarch 23, 1999
Term endedSeptember 28, 2010
Patent numberCA 2026503 C
Classification (IPC)H04N5/30 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedSep 28, 1990Patent grantedMarch 23, 1999Term endedSep 28, 2010

Sources & verification

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