Reading device for optically detectable digital codes

Details Reading device for optically detectable digital codes Reading device for optically detectable digital codes

1974-07-29

1976-08-03

Canney, Vincent P.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

G06K 710, G06K 1908

Patent

active

039731073

ABSTRACT:
A reading device for optically detectable digital codes with two different light-reflecting types of fields. It comprises: a scanning beam arrangement having a timing raster with two different light-reflecting types of serially-numbered fields, means for conducting part of the scanning beam via said timing raster and the rest onto the code fields, a timing signal photoelectric cell receiving the light reflected back by the timing raster, a coding signal photoelectric cell receiving the light reflected back from the code field, and an evaluation electronic system connected to the outputs of the photoelectric cells for determining the length of the code fields in units of the timing raster in the scanning direction. Each code field length is associated with a number of timing fields varying between two predetermined limits.

REFERENCES:
patent: 3571571 (1971-03-01), Kapsambelis
patent: 3745351 (1973-07-01), Pudel
patent: 3812325 (1974-05-01), Schmidt
patent: 3818444 (1974-06-01), Connell
patent: 3891829 (1975-06-01), Dobras

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