发明名称 Football signaling system
摘要 A way of enhancing spectator enjoyment of football. Each referee has a holder for the flag. When an off-side, clipping, backfield in motion, etc., is observed, the referee drops the flag to signal a rules infraction. The holder senses the removal of the flag. By virtue of a radio link, the sensing of the flag removal is relayed as to a receiving station. In turn, a signal flashes on the stadium scoreboard and on the televised transmission as viewed on a television receiver screen. By virtue of this arrangement, the spectators know that the play may be called back, even though the players themselves may not be aware that a flag has been dropped to signal a rules infraction and will continue to play.
申请公布号 US4541013(A) 申请公布日期 1985.09.10
申请号 US19820399338 申请日期 1982.07.19
申请人 ALPERT, SIDNEY A. 发明人 ALPERT, SIDNEY A.
分类号 A63B71/06;(IPC1-7):H04N5/24;H04N7/08 主分类号 A63B71/06
代理机构 代理人
主权项
地址