Patent ID: 6621178
Filing Date: 2003-09-16
Classification: B60R,G07C,H01Q

Abstract:
A motor vehicle equipped with a recognition device (1) for operating means for locking the opening leaves (6-9) of the motor vehicle (V), said recognition device being capable of remotely exchanging data with an identification member (11) worn or carried by a user, to allow access to the vehicle when the identification member has been authenticated by the recognition device, the latter being connected to a pair of antennas (2, 3) placed one along each side of the vehicle and each having, when powered at nominal power, a zone of coverage (Z1, Z2) which covers the interior of the cabin of the vehicle and extends laterally to the outside at least on the side on which the antenna is located, so as to allow a dialog between the recognition device and the identification member when the latter is located in the zone of coverage of at least one of said antennas, the dialog being triggered in response to action by the user on an external member placed on one side of the vehicle, wherein the recognition device (1) is capable, in response to the action of the user on said external member, of causing the antenna located on the same side as said external member to be powered at said nominal power and the antenna located on the opposite side of the vehicle to be powered at a reduced power so that the latter antenna has a reduced zone of coverage (Zâ€²1) extending toward the outside of the vehicle only on said side opposite the one on which this antenna is located, so that the recognition device (1) is capable of determining on which side of the vehicle the identification member (11) has been seen by one or other of the two antennas (2, 3), so as to carry out at least one function dependent on the side of the vehicle on which the identification member has been seen.