Patent ID: 7474199

Claim:
An in-vehicle device remote control system comprising: a transmitter for transmitting a transmission request signal to given detection areas outside of and inside of a vehicle; a mobile device carried by a user for transmitting a response signal in response to the transmission request signal of the transmitter; a receiver for receiving the response signal of the mobile device; matching means for executing a given matching process with respect to the response signal received by the receiver; position determining means for determining a detection area in which the mobile device is present based on the response signal received by the receiver; door control means for controlling doors of the vehicle based on the response signal matched by the matching means, and a position of the mobile device in the detection area outside of the vehicle; and engine control means for controlling an engine of the vehicle based on the response signal matched by the matching means, and a position of the mobile device in a given start-permitting detection area inside the vehicle, wherein the mobile device includes a first mobile device for transmitting a first response signal, and a second mobile device for transmitting a second response signal different from the first response signal, wherein the door control means unlocks the doors automatically in response to any of the first response signal or the second response signal, and wherein the engine control means permits a start of the engine in response to only the first response signal.