Games using tangible projectile – Playing field or court game; game element or accessory... – Having at least two different types of game elements used in...
Patent
1997-06-06
1999-06-01
Manuel, George
Games using tangible projectile
Playing field or court game; game element or accessory...
Having at least two different types of game elements used in...
G08B 500
Patent
active
059083611
ABSTRACT:
A system is described for the automatic detection of ball bounces on a tennis court, and which is applicable to similar games. The system comprises a sonar-like sound system in conjunction with a pressure-sensitive system located on the court surface itself. The sound system uses a multiplicity of microphones to detect and means to analyze the sounds and to calculate the position of sounds identified as balls striking the court surface. The pressure system is used to detect ball bounces on the boundary lines themselves, and utilizes coaxial cables as the sensing elements. The pressure system is checked only when the sound system determines that a ball is bouncing on or near one of the boundary lines. Processing is done by a personal computer to which a special interface card is added.
REFERENCES:
patent: 3774194 (1973-11-01), Jokay et al.
patent: 3982759 (1976-09-01), Grant
patent: 4365805 (1982-12-01), Levine
Booth William C.
Fisher Joseph R.
McInnis Francis E.
Manuel George
Signal Processing Systems, Inc.
White Mark P.
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