Patent ID: 11866004
Assignee: VOXX INTERNATIONAL CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  E  H | IPC B  E  H

Claim 13:
14. A method of operating a vehicle control system (VCS) installed in a vehicle, the method comprising steps of:
pairing the VCS with a radio frequency (RF) proximity sensor installed in the vehicle via a link in accordance with a short range RF communication standard;
estimating distances between the RF proximity sensor and an authorized user mobile device by measuring strength of RF transmissions of the authorized user mobile device received by the RF proximity sensor, thereby obtaining a plurality of distance readings;
detecting a departure event that occurs when the authorized user mobile device crosses from within a predetermined distance departure limit of the vehicle to outside of the predetermined distance departure limit of the vehicle, based on the distance readings; and
performing at least one departure action in response to the departure event.