Method for detecting physical anomalies of U.S. currency

Details Method for detecting physical anomalies of U.S. currency Method for detecting physical anomalies of U.S. currency

1981-08-17

1984-02-07

Punter, William H.

Optics: measuring and testing

For optical fiber or waveguide inspection

356 71, 356239, 356385, G01N 2117, G01B 1104

Patent

active

044299915

ABSTRACT:
Means and methods are provided for examining bills and detecting flaws therein, such as length and width variations, holes, tears and dog-ears or folded corners. Electrical signals are generated by light sensing circuits and compared with signals representing the standard physical characteristics of the bill to indicate deviations therefrom.

REFERENCES:
patent: 3746451 (1973-07-01), Croissant et al.
patent: 3938663 (1976-02-01), Carnes et al.
patent: 4298807 (1981-11-01), Favre

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