Patent ID: 6579190
Filing Date: 2003-06-17
Classification: A63B

Abstract:
A ball motion measuring apparatus comprising:a CCD camera having a multi-shutter capable of successively opening and closing at a plurality of times at a high speed; a triggering sensor detecting a movement of a ball-hitting means or that of a ball and outputting a trigger signal to set opening and closing times of said multi-shutter; and a controlling and computing device connected to said CCD camera and said triggering sensor and having a storing medium for an image frame and an image display means, wherein owing to a plurality of successive opening and closing of said multi-shutter caused by detection of said triggering sensor, said CCD camera photographs a plurality of ball images on a one-image frame, and said image display means displays said ball images in said one-image frame, wherein an interval between an opening and closing time and a successive opening and closing time is 1.5 to 3.0 ms, and wherein based on a plurality of images of a ball photographed in said one-image frame, said controlling and computing device determines a central coordinate of each of images of said ball and computes an actual movement distance of said ball and a flight speed of said ball from an interval between an opening and closing time of said multi-shutter and a successive opening and closing time of said multi-shutter.