Patent Yard Sign in
Expired Canadian patentCanada

Image processor

CA 2072838 C · Owner: Funada, Masahiro · Inventors: Funada, Masahiro; Takaragi, Yoichi; Udagawa, Yutaka

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

An image processor having a circuit for holding data on features of registered specific images a circuit for, determining a similarity between features of an input image and the held features of each of the specific images and a, circuit for updating the held content of the holding circuit from the outside through a line. The image processor also has a judgment circuit for determining the degree of similarity between an input image and each of the specific images according to tint distributions of these images and a circuit for registering data on the tint distribution of each specific image.

Read the whole patent

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 30, 1992 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2014.
  • 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 30, 1992
GrantedApril 27, 1999
Term endedJune 30, 2012
Patent numberCA 2072838 C
Classification (IPC)H04N1/46 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedJune 30, 1992Patent grantedApril 27, 1999Term endedJune 30, 2012

Sources & verification

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