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System for pitching of baseball

  • US 20090170642A1
  • Filed: 12/19/2008
  • Published: 07/02/2009
  • Est. Priority Date: 12/27/2007
  • Status: Active Grant
First Claim
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1. A system for pitching of baseball or softball comprising:

  • a pitching room having a space which is enclosed with right and left walls, front and back walls, a ceiling, and a floor having a pitcher'"'"'s mound from which a player will throw a ball and a home plate by which the thrown ball will be determined depending upon its trajectory, wherein the distance between the pitcher'"'"'s mound and home plate is adaptable for the baseball or softball rule;

    a video camera for electronically photographing the pitching room along the longitudinal direction thereof from the back of the mound by using a two-dimensional image sensor included therein;

    a stripe pattern arranged at a predetermined area on and around the home plate on the floor, wherein the stripe pattern indicates different positions in the longitudinal direction of the area;

    a mirror obliquely mounted on the ceiling right above the home plate for reflecting the optical image of the home plate and stripe pattern toward the video camera; and

    a computer for detecting three-dimensional position of the thrown ball based on the image signal output from the video camera simultaneously photographing the thrown ball and the optical image of the stripe pattern above which the thrown ball passes reflected by the mirror, and for outputting the detecting signal.

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