A secure vehicle access system comprises a vehicle and a key associated with the vehicle. The key comprises: a radio frequency, RF, key transceiver configured to: broadcast at least one signal; and listen for an acknowledgement message from the vehicle. The vehicle comprises: a radio frequency, RF, vehicle transceiver configured to: listen for the at least one broadcast signal from the key; and in response thereto, transmit an acknowledgement message back to the key to establish a communication link between the vehicle and the key. The key further comprises a ranging circuit configured to perform a distance determination between the vehicle and the key, following the establishment of the communication link, to determine whether to allow access to the vehicle.
Secure vehicle access system, key, vehicle and method therefor
2019-03-26
Patent
Electronic Resource
English
IPC: | H04M TELEPHONIC COMMUNICATION , Fernsprechverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / H04B TRANSMISSION , Übertragung |
SECURE VEHICLE ACCESS SYSTEM, KEY, VEHICLE AND METHOD THEREFOR
European Patent Office | 2018
|SECURE VEHICLE ACCESS SYSTEM, KEY, VEHICLE AND METHOD THEREFOR
European Patent Office | 2019
|