Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent
1976-06-25
1977-10-11
Kilgore, Robert M.
Registers
Calculators
Input-output calculator to indicator, printer, etc.
235 6111E, 3401463C, 3401463Z, G06K 708, G06K 714, G06K 918
Patent
active
040537374
ABSTRACT:
CMC7 characters as coded by variations in spacing between vertical bars of magnetic material are automatically read as they pass a reading electron by separately sensing all magnetic materials in each of a multiplicity of side-by-side paths spanning the height of the characters and extending the length of the field on which the characters may appear to produce a like multiplicity of analog signals. Positive excursions of the signals above a predetermined amplitude level are summed as a first time amplitude function. Negative excursions of the signals above a predetermined level are summed as a second time amplitude function. A first train of pulses is generated, one pulse for each peak in the sum of the positive excursions. A second train of pulses is generated on pulse for each peak in the sum of the negative excursions. Signals are produced from the first and the second trains representative of leading and trailing edges of bars forming the character for identification of each character in dependence upon the bar spacings.
REFERENCES:
patent: 3548374 (1970-12-01), Vaccaro
patent: 3638238 (1972-01-01), Milford
patent: 3688955 (1972-09-01), L'Auillier
patent: 3879707 (1975-04-01), Rohrer
patent: 3890597 (1975-06-01), Hanchett
Kao Charles T.
Lafevers James O.
Kilgore Robert M.
Recognition Equipment Incorporated
Vandigriff John E.
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