| 摘要 |
A baseball batting practice apparatus (10) comprises a projection screen (11), a projector (12), a baseball pitching machine (16) and a conveyor system (20). The screen (11) has a passage (13) therethrough. The pitching machine (16) is positioned adjacent the passage. The conveyor system has push-plates (22) adjustably mounted to a conveyor belt (21). A moving video image of a pitcher pitching baseballs is projected upon the screen (11) so as to cause the image of the ball release to occur when the image of the pitcher's hand crosses the passage (13). The pitching of baseballs (B) by the pitching machine (16) is synchronized with the on-screen images by placements of the push-plates (22) on the conveyor belt. |
