Patent EA-000895-B1 (EA)
Title: Method for reproducing ball sounds during a sporting event and ball therfor
Inventor: GOETGELUCK REMY
IPC: A63B43/00
Filed: 1996-11-29
Abstract: 1. A method for collecting information of dynamic situation involving a ball, and/or reproducing the sound environment during a sport event, characterized in that a flexible suspension means is positioned inside the ball and that device (14) comprises a radiofrequency transmitter and a sensor, such as accelerometer, a kick sensor or a microphone, a radiofrequency receiver is provide adjacent to the playing area for receiving signals from the device inside the ball and during a sporting event, receiving an audio signal by a sensor, modulating said audio signal received from the radiofrequency transmitter and transmitting the modulated radiofrequency signal, receiving the transmitted signal by said radiofrequency receiver and using the received signal for reproducing the sound environment. 2. A method as claimed in claim 1, characterized in that said device (14) is actuated via a sensor sensible to accelerations and power is delayed to the radiofrequency transmitter for a predetermined period of time after being actuated. 3. A method as claimed in claim 1 or 2, characterized in that the power to the radiofrequency transmitter can be interrupted by a switch accessible via a valve for pumping up a ball. 4. A method as claimed in claim 3, characterized in that the switch is actuated by a radiofrequency signal. 5. A method as claimed in any claims 1-4, characterized in that the power is supplied to the radiofrequency transmitter using activating circuit sensible to the signal level emitted by the microphone so as to provide power only when said level exceeds the threshold value, and delays power supply to the radiofrequency transmitter for a predetermined period of time after being actuated. 6. A ball for collecting information of dynamic situation involving a ball, and/or reproducing the sound environment during a sport event, characterized in that the ball in the pumped state comprises said device (14) centered respective to the center of gravity, said device further comprising connected in series a microphone, low-frequency circuit for forming a modulated signal and radiofrequency transmitter and a power source of said device. 7. A ball as claimed in claim 6, characterized in that comprises a bladder (9) provided with a tubular elastic coupling which arranged essentially along the bladder diameter and inside which said device (14)is positioned. 8. A ball as claimed in claim 7, characterized in that the coupling is perforated and connected to the valve for pumping the bladder. 9. A ball as claimed in claim 8, characterized in that the bladder (9) has elastic suspensions arranged essentially in radial direction between inner wall of the bladder and said device (14). 10. A ball as claimed in any claims 6-9, characterized in that the microphone is a low-sensible to receive only noises  caused by the ball and to exclude receiving exterior noises. 11. A fixed station for collecting information of dynamic situation involving a ball, and/or reproducing the sound environment during a sport event comprising a receiver (24), electronic circuit of treatment (25) and a mixture chart to produce a low-frequency signal corresponding to the sound environment. 12. A fixed station as claimed in claim 11, characterized in that the electronic circuit of treatment comprises ananalog/digital converter to receive demodulated signals from the receiver output and a microcalculator (28) for a threshold treatment of the digital signal received from the output of the analog/digital converter (27) to produce an activation or deactivation signal of the audio-signal commutator. 13. A fixed station as claimed in claim 12, characterized in that the analog/digital converter (27) provides a signal to the microcalculator (28), the signal corresponds to the amplitude of the audio-signal, wherein the microcalculator can compare the received digital signal with a predetermined value, which corresponds to the threshold action. 14. A fixed station as claimed in claim 13, characterized in that the microcalculator can block the audio signal commutator, when the value of the converted audio signal is less of the predetermined value and activation of the audio signal commutator for T time interval duration of which is less the duration of reverberation. 15. A fixed station as claimed in claim 14, characterized in that the microcalculator can lock the audio signal commutator for a time approximately equal to the duration reverberation  at the end of the T time interval, during which the audio signal commutator was actuated. 16. A fixed station as claimed in claim 15, characterized in that comprises a band-pass filter with a central frequency approximately equal to 1000 hz for treating output audio signal.