Patent ID: 6330520
Filing Date: 2001-12-11
Classification: A63B,G04G

Abstract:
A device in the form of a wristwatch allowing instant knowledge and visualization of a speed of a serve ball, comprisinga system of microprocessors and software which calculate this speed based on a reference distance covered by the ball and a time needed to cover that distance,a first numerical display on which this speed is visualized in kilometers or in miles,a second numerical display on which the reference distance covered by the ball is visualized,a scrolling side-press-button, wherein distances scroll in one direction or the other in the second numerical display when said scrolling side-press-button is actuated to select the reference distance among several reference distances stored in the device during operation of the device, anda watch which is independent from the system of microprocessors and software and the numerical displays, and constitutes only a practical support.