Communications: electrical – Digital comparator systems
Patent
1974-11-11
1977-01-04
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
250226, 3401463F, 3401463H, G06K 714
Patent
active
RE0291048
ABSTRACT:
An optical character recognition system including a laser scanner unit adapted to scan a document having preprinted markings to indicate where the characters are to be placed. Variations in light intensity reflected from the document and characters produce scan signals which are processed to determine the characters. The color of the markings on the document is related to the laser frequency such that the light reflected from the markings has the same intensity as the light reflected from the document background, so that the presence of the markings does not interfere with the reading of the characters.
REFERENCES:
patent: 2615992 (1952-10-01), Flory et al.
patent: 3159815 (1964-12-01), Groce
patent: 3200194 (1965-08-01), Rabinow
patent: 3201512 (1965-08-01), Mason et al.
patent: 3337766 (1967-08-01), Malaby
patent: 3436546 (1969-04-01), Derderian et al.
patent: 3437793 (1969-04-01), Van Berkel et al.
patent: 3444517 (1969-05-01), Rabinow
patent: 3469030 (1969-09-01), Priebe
patent: 3479642 (1969-11-01), Bartz
patent: 3527927 (1970-09-01), Bijleveld et al.
patent: 3578953 (1971-05-01), Milford et al.
Boudreau Leo H.
Cognitronics Corporation
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