Movable object position detecting apparatus

Details Movable object position detecting apparatus Movable object position detecting apparatus

1997-02-27

1999-09-21

Harrison, Jessica J.

Amusement devices: games

Propelled racing

Having contest condition indicator

A63B 7100

Patent

active

059545844

ABSTRACT:
In a movable object position detecting apparatus, first oscillation means 56 for outputting an oscillation signal of a first frequency, and second oscillation means 57 for outputting an oscillation signal of a second frequency are mounted on a movable body 40. On the field 3 for the movable objects 40 to be run on there are provided first position determining means 371, 372 for detecting the oscillation signal of the first frequency outputted by the first oscillation means 56 to determine positions on the field 3 where the first oscillation means 56 is located, and second position determining means 373, 374 for detecting the oscillation signal of the second frequency outputted by the second oscillation means 57 to determine positions on the field where the second oscillation means 57 is located. The movable object position detecting apparatus can detect positions of a number of movable bodies run on a predetermined field.

REFERENCES:
patent: 3587100 (1971-06-01), Doremus et al.
patent: 3815912 (1974-06-01), Wichinsky et al.
patent: 5320351 (1994-06-01), Suzuki
patent: 5472192 (1995-12-01), Eto
patent: 5601490 (1997-02-01), Nakagawa et al.
patent: 5649863 (1997-07-01), Wada et al.

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