Code readout apparatus

Details Code readout apparatus Code readout apparatus

1974-03-21

1976-10-12

Canney, Vincent P.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

250555, G06K 710, E04G 1700

Patent

active

039859991

ABSTRACT:
A readout apparatus for indicating data recorded in the form of marks bearing different widths and intervening blanks also having different widths which comprises a photosensitive device for optically detecting narrow marks and intervening narrow blanks and generating corresponding electric signals; a second photosensitive device for optically detecting broad marks and intervening broad blanks and generating corresponding electric signals; and an electric circuit for reading out a difference between both electric signals and sending forth signals representing the above-mentioned broad and narrow marks and intervening broad and narrow blanks from said difference.

REFERENCES:
patent: 3716699 (1973-02-01), Eckert, Jr. et al.
patent: 3832529 (1974-08-01), Nakamura
patent: 3835453 (1974-09-01), Narayanan

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