Patent ID: 9734647
Date: 2017-08-15
CPC Classifications: B60R,G07C,H04W

Claim:
1. A method of operating an electrical controller of a smart key system, comprising: receiving a first GPS coordinate that is transmitted from a smart key; calculating a distance from the smart key based on the first GPS coordinate and a second GPS coordinate of a vehicle that is received from a GPS satellite; determining whether the distance is within a predetermined reference distance; transmitting a first communication request signal utilizing a first communication type to the smart key when the distance is within the predetermined reference distance; determining whether a first communication response signal corresponding to the first communication request signal is received from the smart key; performing a first communication with the smart key when the first communication response signal is received; controlling the vehicle in accordance with a control signal transmitted from the smart key based on the first communication; transmitting a second communication request signal utilizing a second communication type, which is different from the first communication type, when the first communication response signal is not received; determining whether a second communication response signal corresponding to the second communication request signal is received from the smart key; performing a second communication with the smart key when the second communication response signal is received; controlling the vehicle in accordance with a control signal transmitted from the smart key based on the second communication; and outputting a warning notice indicating that the first communication and the second communication with the smart key was not performed when the second communication response signal is not received.