| 摘要 |
FIELD: game facilities, intended for determination and presentation of lottery combination in roulette play. SUBSTANCE: the device uses a unit of primary optical digitizers, having two directional illumination sources, an infra-red radiation source and two photodetectors, all arranged in a definite manner in a single assembly; the first photodetector via two comparators and two envelope detectors is determining the roulette wheel zero position, whose outputs are connected to the inputs of the unit, determining the sense of wheel rotation, whose outputs are connected to the inputs of the unit, determining the ball position, and connected to the output of the second photodetector via the third envelope detector and comparator. Besides, the device has two logical processing units, programming storage unit and a digital indicator, whose control input via an AND gate is coupled to the outputs of the logical processing units. The device is synchronized in response to signals of a pulse oscillator. EFFECT: enhanced accuracy. |
