Patent ID: 7779686
Filing Date: 2010-08-24
Classification: A63B,G01P

Abstract:
1. A device for calculating the speed of a movement of a ball comprising a. a sensing unit including an aperture at a surface of the ball, a signal generating element sending an outward signal through said aperture and a signal receiving unit acquiring a reflected outward signal, through said aperture; b. distance predetermining means for fixing a value for a particular distance of flight the ball will travel; c. A transducer for receiving a sound signal indicating a termination of the flight of the ball into a stop signal; d. a microprocessor within the ball for recognizing a time of flight of the ball as a time span between the absence of said reflected outward signal through said aperture and the beginning of said stop signal, and calculating a speed of the ball during flight of the ball by employing said value for said particular distance of flight of the ball and said time of flight of the ball, said reflected outward signal through said aperture, and said stop signal.