Baseball pitch speed measurement and strike zone detection...

Optics: motion pictures – With sound accompaniment – Common picture and sound record carrier systems

Reexamination Certificate

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Details

C273S371000

Reexamination Certificate

active

06985206

ABSTRACT:
Apparatus and methods for detecting the speed and/or location of a moving object within a target area are disclosed. A pitch speed measurement and strike zone detection apparatus in accordance with an exemplary embodiment of the present invention may include a support frame configured to support a pair of reflective surfaces on either side of a target area. A light source and receiver configured to direct a light beam back and forth between the reflective surfaces can be used to form a light curtain that detects when an object passes through a particular location within the target area. Multiple light sources and receivers may be employed to measure the speed of the object, and to determine whether the object passes through a particular strike zone. The device may include an adjustment mechanism and self-alignment laser to reposition the reflective surfaces, as necessary.

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Stalker The Worlds Most Advanced Radar Guns Featuring Digital Signal Processing, Oct. 14, 2002, http://www.radarsales.com/stalkers.htm , 5 pages.

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