SCREEN BASE-BALL SYSTEM DEVICE FOR OPENING OR CLOSING HOLE AND PITCHING DEVICE USED TO THE SAME AND PITCHING CONTROL METHOD IN THE SCREEN BASE-BALL SYSTEM

摘要

The present invention relates to a screen baseball system in which a hole is formed in a screen and a pitching machine pitches the ball through the hole, and the hole on the screen is opened and closed only when the pitching machine pitches the ball So as to close the hole while not pitching the ball so that the image projected on the screen can appear natural without the omission, thereby greatly improving the immersion feeling of the screen baseball game through the image projected on the screen In addition, a screen that can provide a sense of realism such as hitting a pitcher ball of an actual pitcher by allowing the user to open and close the hole and pitch the ball in response to the operation and pitch of the virtual pitcher on the image projected on the screen Baseball systems, hole switching devices used therein, Ball for use in pitching device and