Football signaling system
作者： Sidney A. Alpert
DOI:
关键词:
摘要: A way of enhancing spectator enjoyment football. Each referee has a holder for the flag. When an off-side, clipping, backfield in motion, etc., is observed, drops flag to signal rules infraction. The senses removal By virtue radio link, sensing relayed as receiving station. In turn, flashes on stadium scoreboard and televised transmission viewed television receiver screen. this arrangement, spectators know that play may be called back, even though players themselves not aware been dropped infraction will continue play.
lens.org 参考文章(14)
N Zapos, Football lighted goal posts ,(1973)
Thomas S Conigliaro, Mailbox operated electronic signal device ,(1969)
William E Denk, Electronic pointer for television images ,(1946)
Jr John C Schira, Mechanical to video transducer for superimposing additional information on a television scene ,(1952)
Thomas Clayden Ronald, Ronald Gibson William, Television transmitting controllable marking system ,(1948)
Kazuo Kashigi, Masao Inaba, Digital video effects system employing a chroma-key tracking technique ,(1978)
Chantal Bouyssounouse, Bernard Bouyssounouse, Apparatus for communicating receipt of transmitted messages ,(1978)
Hermannus Schat, Ljubomir Micic, Manfred F. Ullrich, Laurin C. Freyberger, Television receiver equipped for simultaneously showing several programs ,(1977)
Eiichi Tsuboka, Hirokazu Yoshino, Masao Nakazawa, Tatuo Fujita, Takeji Kimura, Television receiver for display of plural video images including a displayed boundary between the images ,(1978)
Karl-Heinz Schmall, Piotr Sendor, Apparatus and method for controlling game playing time ,(1978)