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1. 发明授权

US5125653A Computer controller ball throwing machine 失效
标题翻译：计算机控制器抛球机
公开(公告)号：US5125653A
公开(公告)日：1992-06-30
申请号：US603268
申请日：1990-10-25
申请人： Ferenc Kovacs , Laszl o Juhasz , Attila Szmejkal , Rudolf Liptay
发明人： Ferenc Kovacs , Laszl o Juhasz , Attila Szmejkal , Rudolf Liptay
IPC分类号： A63B69/40
CPC分类号： A63B69/406
摘要： A new ball throwing machine for ejecting tennis balls comprising an adjustable ball throwing mechanism, a microcomputer controlling the throwing mechanism for programmed stroke sequences, and a remote control unit attached to the microcomputer and having a touch pad keyboard for direct assignment of impact points of the balls and for command selection and, for balls impacting on a center line of a tennis court, the throwing mechanism is controlled for determining a vertical angle and a launching speed of throwing out the balls on basis of linear interpolation between co-ordinates of two check points of the impact of balls, of a training level and a stroke type preselected on the keyboard, and the first check point is a meshing point of a net and the center line of the tennis court, the second check point is a meshing point of a baseline and the center line; for all other balls, also a horizontal angle of throwing out the balls is determined by a simple trigonometric relation, and a memory is provided in the microcomputer for storing the angle and speed data of each impact point.
摘要翻译：一种用于喷射网球的新型抛球机，包括可调节抛球机构，微型计算机控制用于编程笔画顺序的投掷机构，以及附接到微型计算机的遥控单元，并具有用于直接分配影像点的触摸板键盘球和命令选择，并且对于撞击在网球场的中心线上的球，投掷机构被控制以基于两次检查的坐标之间的线性内插来确定投掷球的垂直角度和发射速度在键盘上预先选择的球，训练水平和冲程类型的影响点，并且第一检查点是网的网格点和网球场的中心线，第二检查点是网格点的网格点基线和中线; 对于所有其他球，通过简单的三角关系确定抛出球的水平角度，并且在微型计算机中提供存储每个冲击点的角度和速度数据的存储器。

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