Abstract: A control installation of the playing time of a sporting event, in particular of the basketball game type, includes a portable acquisition and detection system of a whistle signaling the stoppage of the playing time, the portable system converting the acoustic signals into digital signals, digitally processing these digital signals and delivering a digital refereeing signal in response to the detection of the whistle. The control installation further includes a fixed system for controlling the playing time in digital radio connection with the portable system and a controller for controlling the stoppage and/or restarting of a stopwatch counting down the playing time in response to the reception of the digital refereeing signal.

Abstract: Installation (1) for controlling the playing time of a sporting event, in particular of the type found in basketball, comprising:—a portable system (2) for picking up and detecting a whistle blow (S4) that signals a stoppage in the playing time, said portable system converting the audible signals into digital signals, digitally processing these digital signals and outputting a digital refereeing signal (S23) in response to the detection of the whistle blow; and—a fixed system (3) for controlling the playing time, having a digital radio connection to the portable system and comprising control means (31) that stop and/or start a clock (32) that counts down the playing time in response to the reception of the digital refereeing signal. The invention also relates to just the portable system and to just the fixed system specially designed for the portable system, and also to a time-multiplexing digital audio communications terminal incorporating such a portable system.

Abstract: A control installation of the playing time of a sporting event, in particular of the basketball game type, including a portable acquisition and detection system of a whistle signaling the stoppage of the playing time, said portable system converting the acoustic signals into digital signals, digitally processing these digital signals and delivering a digital refereeing signal in response to the detection of the whistle; and a fixed system for controlling the playing time in digital radio connection with the portable system and comprising controller for controlling the stoppage and/or restarting of a stopwatch counting down the playing time in response to the reception of the digital refereeing signal, the invention also concerning the portable system alone and the fixed system alone specially adapted for the portable system, as well as an audio-digital communication terminal by temporal multiplexing integrating such a portable system.