Electronic pitching trainer and method for determining the...

Details Electronic pitching trainer and method for determining the... Electronic pitching trainer and method for determining the...

2011-08-23

2011-08-23

Williams, Hezron E (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

C473S455000

Reexamination Certificate

active

08001838

ABSTRACT:
A sensing device obtains range-related data—such as Doppler data or pulse time-of-flight data—from a sports projectile during flight. The time course of the range-related data is employed, in light of predictable characteristics of the projectile trajectory, to determine and output an accurate determination of the projectile speed for one or more points of interest in its flight. Such determination of speed may, for instance, be the speed at the time of projectile release, even though range-related data is gathered later in the flight, when the projectile is traveling neither so fast, nor straight at the sensor. Such sensing device may employ inexpensive short-range acoustic Doppler, and be incorporated into a target device that automatically displays to a pitcher-in-training the speed and ball/strike condition of each pitch.

REFERENCES:
patent: 5820496 (1998-10-01), Bergeron
patent: 6272071 (2001-08-01), Takai et al.
patent: 6551205 (2003-04-01), Koelzer, Jr. et al.
patent: 6614719 (2003-09-01), Grzesek
patent: 2005/0187036 (2005-08-01), Ziola et al.

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