Optical code reading device

Details Optical code reading device Optical code reading device

1986-06-05

1989-05-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, 341 8, G01D 534, H01J 314

Patent

active

048353825

ABSTRACT:
An optical code reading device, including a unit having, for each of the tracks of the coded element, a pair of photodiodes, a differential amplifier receiving the outputs of the photodiodes and the trigger connected to the output of the amplifier, a shift register receiving the outputs from the unit, a control unit, a clock and apparatus for feeding to said unit signals adapted for simulating at will, for each channel, the bit level "0" or the bit level "1".

REFERENCES:
patent: 2966671 (1960-12-01), Abbott
patent: 3938890 (1976-02-01), Flavell
patent: 4110610 (1978-08-01), Mueller
patent: 4137451 (1979-01-01), Einolf, Jr.
patent: 4173752 (1979-11-01), Yamanaka
patent: 4311987 (1982-01-01), Taillebois
patent: 4312071 (1982-01-01), Bloch
patent: 4422065 (1983-12-01), Radomirov et al.
patent: 4427972 (1984-01-01), Haville et al.
patent: 4622461 (1986-11-01), Taillebois
patent: 4678908 (1987-07-01), La Plante
patent: 4700063 (1987-10-01), Hara
patent: 4719346 (1988-01-01), Taillebois et al.
patent: 4739163 (1988-04-01), Gambs et al.
Walker, "Guarding Against Errors in Optical Encoders", Machine Design, vol. 54, No. 24, 10/82, pp. 105-109.
Frank et al., "Precision Shaft-Position Encoders", IRE Transactions on Instrumentation, vol. PGI-5, pp. 168-173.

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