Gray code reader

Details Gray code reader Gray code reader

1977-03-17

1979-03-27

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

340347P, G06F 1110

Patent

active

041468732

ABSTRACT:
An analog to digital convertor for converting mechanical motion to an electric digital signal which includes a code plate carrying gray codes for measuring displacement, and codes for parity bits and parity check control bits wherein the parity bits detect the occurrence of a readout error while the parity check control bits detect an incorrect parity check caused by errors in the sensing operation such as dirt, dust, or damaged sensing elements.

REFERENCES:
patent: 2713084 (1955-07-01), Berwin
patent: 3187325 (1965-06-01), Waldhauer
patent: 3548397 (1970-12-01), Dayton
patent: 3594735 (1971-07-01), Furlong
patent: 3913095 (1975-10-01), Dlugos
patent: 3938083 (1976-02-01), Stansfield
patent: 3947843 (1976-03-01), Presentey
patent: 3999064 (1976-12-01), Kramer
patent: 4025914 (1977-05-01), Akita

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