Method for selectively establishing a link between at least a transmitter and at least one mobile to receive System Information messages, for practicing the methodAnd transmitting and receiving units for the system.

摘要

A System comprising several Transmitters at fixed sites in a supermarket and a Mobile receiver installed in each Monkey.When a changopenetra in the scope of a transmitter.A link is established between both for the receiver of a message at the transmitter to serou00eddo prerecorded audio by the user of the Chango.The receiving control signals Radiate their listening with a pre-determined range in response to which a transmisordentro scope of One such recipient returns a Signal controlShipping and transmits its prerecorded message that is tuned by the receiver, lassenales control signals that modulate Infrared monofrecuentes are carriers.The signs of the recorded messages are preferably enmemorias Analog Solid State and modulate in radio or Infrared carrier frequency in different Realizations.Other uses include yambientes public museums, where such a receiver can be carried by the user in a Monkey