Apparatus for detecting moving ball

Details Apparatus for detecting moving ball Apparatus for detecting moving ball

1998-04-22

1999-11-02

Harrison, Jessica J.

Games using tangible projectile

Playing field or court game; game element or accessory...

Having at least two different types of game elements used in...

473353, 473570, 342127, 342450, A63B 6700, A63B 6100

Patent

active

059760389

ABSTRACT:
A system is provided with a directional antenna having first and second antenna patterns oriented around an antenna boresight direction. The antenna boresight is oriented in a direction corresponding to a play determinative line on a playing field. Signals are emitted firm a playing object, used as a ball and detect using the two antenna patterns. Comparison of the detected signals provides an output indication when the playing object crosses the play determinative line.

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