Electronic equipment for radio control of fencing bouts
AssigneeAnvar Agence Nationale de Valorisation de la Recherche
InventorGuy Delcayre
Life of this patent
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Abstract
Electronic equipment for scoring fencing bouts in which each fence is provided with a unit including a transmitter of a predetermined frequency and an aperiodic receiver. Each fencer's unit also includes a pulse generator whose pulses are used to distinguish valid touches, touches on the opposing weapon and the ground as well as touches on other conductive surfaces.
Claims32
Apparatus for scoring fencing bouts in which each fencer carries a weapon having first and second electrically conductive parts, said weapon comprising for each fencer a unit including:
- means for transmitting a signal of a predetermined frequency,
- means for generating pulses for application to a first electrically conductive part of the respective weapon carried by a fencer,
- receiver means having an input for connection to a second electrically conductive portion of the respective weapon carried by a respective fencer,
- switch means on the weapon,
- means connected between said switch means and said transmitting means and responsive to a touch made by the weapon on the body of the other fencer to produce a command signal to operate the transmitting means of the unit of the fencer making a touch to produce a signal indicating the touch,
- said receiver means of the unit of the fencer making the touch also including means responsive to reception of pulses from the unit of the other fencer on the weapon associated with said receiving means for blocking the command signal from affecting the transmitting means of said unit.
An improved apparatus for scoring fencing bouts between a plurality of fencers each carrying a weapon having at least one electrically conductive part, said apparatus including, for each fencer, a unit including a transmitter actuable to operate in an active mode wherein a predetermined signal is produced to indicate a touch by the corresponding fencer and in an inactive mode wherein said indicating signal is not produced, and means positioned on the corresponding weapon for sensing when said weapon makes a touch, the improvement comprising, for each unit:
- means connected to a first conductive part of said weapon and to the body of the corresponding fencer for generating pulses of a predetermined shape, polarity and duration;
- and
- a receiver having an input coupled to said sensing means and an output coupled to said transmitting means and being constructed and arranged to normally maintain said transmitter in a first of said active and inactive modes, said receiver including:
- means responsive to the sensing of a touch by said sensing means for actuating said transmitter to the other of said active and inactive modes, and
- means responsive only to a pulse at the input of said receiver having a predefined shape, polarity and duration for disabling said actuating means.
Dependencies are inferred from the claim text.