Optical information reading device

Details Optical information reading device Optical information reading device

1979-04-05

1982-02-09

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

235455, 235472, 250205, 250568, G06K 922

Patent

active

043152457

ABSTRACT:
An optical information reading device for character recognition and processing having an array of luminous diodes to illuminate the material to be read. A sensor transmits received data signals to a pattern indentification circuit. The signals are also transmitted to a light control circuit to vary the illumination to the array to provide uniform lighting of the characters to be read.

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patent: 4200391 (1980-04-01), Sakamoto et al.
Thomas et al., "Digital Feedback Light-Emitting Diode Control, " IBM Tech. Disclosure Bulletin, vol. 16, No. 8, Jan. 1974, pp. 2598-2600.
Dattilo et al., "Variable Intensity Illumination Scanner Calibration System, " IBM Tech. Disclosure Bulletin, vol. 21, No. 9, Feb. 1979, pp. 3546-3547.

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