Apparatus for evaluating baseball pitching performance

Details Apparatus for evaluating baseball pitching performance Apparatus for evaluating baseball pitching performance

1984-01-10

1986-01-07

Pinkham, Richard C.

Amusement devices: games

Aerial projectile game; game element or accessory therefor...

Target

273181H, 273185R, 273371, 434247, A63B 7102, A63B 7106

Patent

active

045630054

ABSTRACT:
Apparatus for detecting and computing the location of a baseball as it is pitched over a plate is disclosed. Infrared receivers are disposed at corner locations on opposite sides of a target zone which is aligned with the plate. First and second arrays of infrared emitters are mounted on opposite sides of the target zone for transmitting infrared light pulses to the opposite corner receivers. The infrared emitters are sequentially energized and transmit infrared pulse signals having relatively short durations in a scan cycle. Digital data words representative of the reception and nonreception by the receivers of the optical pulse signals are generated during each pulse interval of the scan cycle. Computer circuitry calculates the coordinates of the baseball within the target zone as a function of predetermined angular data retrieved computer memory. The computer memory is preprogrammed with a table of angular data corresponding to each receiver data word and the particular emitter pulse interval in which it occurs.

REFERENCES:
patent: 2113899 (1938-04-01), Oram
patent: 2943141 (1960-06-01), Knight
patent: 3157399 (1964-11-01), Gaudet
patent: 4150825 (1979-04-01), Wilson
patent: 4461477 (1984-07-01), Stewart

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