Pattern data processing method and apparatus to practice such me

Details Pattern data processing method and apparatus to practice such me Pattern data processing method and apparatus to practice such me

1979-08-27

1981-10-13

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

3401463Y, G06K 946

Patent

active

042951208

ABSTRACT:
A screen is formed of a plurality of picture elements arranged in horizontal and vertical direction. The screen is consecutively scanned by a photo sensor while a pattern to be recognized is projected onto the screen, or is placed therein. The screen is divided into small picture frames containing at least two each horizontal and vertical neighboring picture elements which total a minimum of 2.times.2=4 picture elements. The output of the photo sensor is supplied to a delay means which is controlled so that the data of the plurality of small picture frames is obtained, and then processed for segregation by difference of type so that the peculiar data corresponding to the pattern projected or placed onto the screen is obtained.

REFERENCES:
patent: 3522586 (1970-08-01), Kiji et al.
patent: 3634823 (1972-01-01), Dietrich et al.
patent: 3805239 (1974-04-01), Watanabe
patent: 3868635 (1975-02-01), Shah et al.
patent: 3968475 (1976-07-01), McMahon
patent: 3980809 (1976-09-01), Cook
patent: 4014000 (1977-03-01), Uno et al.

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