Patent ID: 6047808
Filing Date: 2000-04-11
Classification: G07D,G07F

Abstract:
Apparatus usable for discriminating among coins and other discrete objects, comprisinga sensor having a first integral magnetic core, said first core having first and second substantially opposed end faces defining a first gap, to define magnetic flux lines in the vicinity of said first gap;first circuitry which initiates at least a first action in response to discrimination of an object using said sensor;at least a first communications link coupling said sensor to said first circuitry to provide an output signal from said sensor to said first circuitry;at least a first conductive coil coupled to said first core;second circuitry which provides current defining at least a first frequency to said first coil;a second magnetic core which is non-linear over at least a portion thereof, said second core defining a second gap to define magnetic flux lines in the vicinity of said second gap; anda second conductive coil coupled to said first core and third circuitry which provides current defining a second frequency to said second coil, said second frequency being different from said first frequency.