RADIO TRANSCEIVER FOR THE RECEPTION AND TRANSMISSION OF INFORMATION

摘要

A radio transceiver for the reception and transmission of information is integrated in a portable object and adapted to exchange information with an information processing station, and comprises information reception and transmission means which are connected to a central processing unit (2), and an electric power supply (1), said transceiver being characterized in that it further comprises means (3) for the periodical activation of means (4) for the detection of the emission of a radioelectric signal by the information processing station whose output is connected to control means (5a) for controlling the supply to the remaining (2) elements of said device in response to the detection of the signal.