| 摘要 |
<p>Offside-detection-system for ball-sports with a receiver and at least one transmitter characterized by the fact that it contains a transmitter that is provided with means to generate a ball-signal when a player kicks the ball, and this until a team-mate touches the ball, that the receiver is provided with means to receive the mentioned ball-signal and that the receiver is furthermore provided with means to receive a position-signal that is being generated for as long as a team-mate is in an offside position, whereby the receiver is provided with means to generate an offside-signal when the position-signal is received before the ball-signal.</p> |
