Check-actuated control mechanisms – Control mechanism actuated by check – other than coin – which... – By pliant currency
Patent
1998-03-03
2000-04-18
Olszewski, Robert P.
Check-actuated control mechanisms
Control mechanism actuated by check, other than coin , which...
By pliant currency
382135, 250205, 356 71, G06K 700, G06K 900, G01J 132
Patent
active
060503874
ABSTRACT:
A device and method for identifying a bank note with simple construction offering easy adjustment and a reliable performance independent of the environment under which it works. The device enables identification of a bank note printed in color with a genuine one by the method of adjusting the intensity of light emission so as to equalize sensitivity of a photoelectric transducer to a light source A and a light source B, emitting lights in different wavelengths when there is no object to be identified, detecting the difference in sensitivity of detected signals of light transmitted through or reflected by the object to be identified as output of a high-pass filter, and sampling, in a sampling circuit, a signal based on the sensitivity difference and proportional to the difference between detected value for light source A and sensitivity of light source B to conduct identification based on the sampling value.
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Nakano and Kuwano; "Color Sensors and Their Application Techniques"; Sensor Interfading No. 2; 1983; pp. 73-80.
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Nishihara and Tokumaru; "Full Color Mark Sensor"; Sensor Gijyutsu; 1991; vol. 11, No. 4, p. 67.
Jaketic Bryan
Olszewski Robert P.
Yokohama Denshi Kogyo Kabushiki Kaisha
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