Patent ID: 8102241
Filing Date: 2012-01-24
Classification: B60R,G07C,H01Q

Abstract:
1. A vehicle control system comprising: a portable unit carried by a user of a vehicle for transmitting a first radio signal for a keyless entry system for remotely operating equipment of the vehicle; a vehicle condition detector mounted in the vehicle for transmitting a second radio signal for a vehicle condition monitoring system; and an in-vehicle receiver mounted in the vehicle for receiving the first radio signal and the second radio signal, wherein the portable unit transmits the first radio signal through a plurality of channels different in frequency, and wherein the in-vehicle receiver includes: wherein: the channel determining unit includes an accordance determining unit for determining whether or not the demodulated signal of the first radio signal received by the antenna is in accordance with a coding method with respect to each of the plurality of channels, and determines a channel which is in accordance with predetemined coding method, with respect to the demodulated signal by the accordance determining unit as the optimal channel; the in-vehicle receiver includes an optimal channel changing unit for checking an authentication code contained in the demodulated signal of the first radio signal with an authentication code unique to the vehicle, and for changing the optimal channel determined by the channel determining unit when these codes disagree with each other; the in-vehicle receiver includes a channel notifying the portable unit of the optimal channel determined by the channel determining unit; and the portable unit transmits the first radio signal in the optimal channel notified by the channel notifying unit.