Abstract: A communications system for land vehicles usable in the field of radio communications with any electronic data processing equipment connected to a mobile telecommunications network. The communications system enables the connection of a communication terminal (TP_i) to a mobile communications network (2) from a vehicle (1) of the kind including a local network (PAN) linked to the vehicle, and a server for connecting said local network to the communications network (GPRS, UMTS). The local network (3) provides a resource (Cext) for connecting a requesting communications terminal (TP_k) and the mobile communications network (2), and resources (Cint) for setting up a connection between two mobile terminals (TP_i, TP_j) connected to the local network (PAN) linked to the vehicle.

Abstract: A method of mutually authenticating, firstly, a portable object (10) assigned a unique identifier (MSISDN) and including first wireless communications means and, secondly, a public access terminal (20) including second wireless communications means and telecommunications means for communicating via a telecommunications network (1). The portable object (10) is assigned a wireless communication key (Kme). An authentication server (30) is installed on the network (1) and adapted to determine the key Kme from the identifier (MSISDN). The identifier (MSISDN) of the portable object (10) is sent to the terminal (20) and then from the terminal (20) to the authentication server (30). The authentication server (30) determines the key Kme and allocates the wireless communication key Kme to a calculation unit (30). The calculation unit (30) calculates a session key (Ksession) from the key Kme of the portable object (10) and allocates the key Ksession to the public access terminal (20).

Abstract: To activate an interactive multimedia station (BN) providing facilities of a mobile office to a user of a mobile radio terminal (TM), the mobile terminal (TM) signals its presence in the vicinity of the station (BN), either by local radio link to the station itself, or by short messages to a management server (SB) when the terminal is a radiotelephone. An identifier of the terminal is transmitted from the station (BN) to the management server, or to a location recorder of the radiotelephony network (RR) to activate the station after validating the identifier.

Abstract: A communications system for land vehicles usable in the field of radio communications with any electronic data processing equipment connected to a mobile telecommunications network. The communications system enables the connection of a communication terminal (TP_i) to a mobile communications network (2) from a vehicle (1) of the kind including a local network (PAN) linked to the vehicle, and a server for connecting said local network to the communications network (GPRS, UMTS). The local network (3) provides a resource (Cext) for connecting a requesting communications terminal (TP_k) and the mobile communications network (2), and resources (Cint) for setting up a connection between two mobile terminals (TP_i, TP_j) connected to the local network (PAN) linked to the vehicle.

Abstract: A method of communicating data securely between a terminal and at least one communicating equipment. The communicating equipment in communication with the terminal is identified by at least one first security device installed in the terminal to recognize the nature of the communicating equipment. The communicating equipment is authenticated by acquiring data processed by at least one security server so that it is executable only by the communications equipment. The integrity of the communicating equipment is checked by at least one approval device of the security server using the data transmitted at the time of the authentication, and, in the event of correct identification, authentication and integrity checking at least one management device installed in the terminal is commanded to set up secure data communication with the communicating equipment.

Abstract: A method of mutually authenticating, firstly, a portable object (10) assigned a unique identifier (MSISDN) and including first wireless communications means and, secondly, a public access terminal (20) including second wireless communications means and telecommunications means for communicating via a telecommunications network (1).

Abstract: To activate an interactive multimedia station (BN) providing facilities of a mobile office to a user of a mobile radio terminal (TM), the mobile terminal (TM) signals its presence in the vicinity of the station (BN), either by local radio link to the station itself, or by short messages to a management server (SB) when the terminal is a radiotelephone. An identifier of the terminal is transmitted from the station (BN) to the management server, or to a location recorder of the radiotelephony network (RR) to activate the station after validating the identifier.

Abstract: A component comprises a coil for the supply by induction of the component and for the inductive bidirectional transfer with the station of a signal representative of data. Means for processing said signal are supplied by the coil and are produced in integrated technology on the substrate of the component. The turns of the coil are produced in flat integrated technology by metallization on the surface of the component. The integral coil occupies at least 50% of the total surface of the component.

Abstract: Apparatus for the exchange of information by electromagnetic coupling between a passive portable object and a station comprising: first electromagnetic coupling means for the transmission of data between the portable object and the station, and second electromagnetic coupling means independent of the first means for the transfer of energy and a clock signal to the portable object. A filtering circuit is provided on the station side, which behaves as an inductance at the frequency associated with the data transmission and as a high value impedance at the frequency associated with the energy transfer.

Abstract: A component comprises a coil for the supply by induction of the component and for the inductive bidirectional transfer with the station of a signal representative of data. Means for processing said signal are supplied by the coil and are produced in integrated technology on the substrate of the component. The turns of the coil are produced in flat integrated technology by metallization on the surface of the component. The integral coil occupies at least 50% of the total surface of the component.