Amusement devices: games – Aerial projectile game; game element or accessory therefor... – Target
Patent
1980-12-17
1982-12-28
Hum, Vance Y.
Amusement devices: games
Aerial projectile game; game element or accessory therefor...
Target
340323R, A63B 6100
Patent
active
043658059
ABSTRACT:
A system for aiding a person in determining whether a ball has struck one of a plurality of boundary lines of a playing court. A plurality of laminated, pressure sensitive contact type switches extend along the boundary lines of the court. Digital circuitry connected to the switches repeatedly examines the status of the switches before and after the closure of any one of the switches to determine if the closure lasted for a predetermined time interval, e.g., more than 800 microseconds and less than 5 milliseconds, and therefore resulted from the impact of a ball. A plurality of resistors interconnect the switches so that the simultaneous closure of any pair of switches by a player's foot and the ball will uniquely determine a plurality of resistor networks. The amplitudes of the currents in the networks are determined by a measuring circuit which outputs signals that enable logic circuitry to determine the location on the court where the impact of the ball has occurred. Driver circuitry connected to the logic circuitry activates visual and audio indicators which aid a person in determining that the ball has struck a boundary line at a particular location.
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Hum Vance Y.
Picard Leo P.
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