Patent ID: 7636035

Claim:
A tire pressure control system for a vehicle having wheels with each wheel having a tire thereon, the system comprising: a controller having a transceiver, the controller being operable for receiving information indicative of the rotational speed of each wheel; and a plurality of tire pressure sensors each having a transceiver, the sensors respectively within the tires such that the sensors are respectively associated with the wheels, each sensor transmitting tire pressure information indicative of the pressure of the tire in which the sensor is within to the controller for the controller to determine the tire pressure of the tires; wherein the controller transmits to the sensors a signal modulated with signal markings based on the rotational speed of a selected wheel; wherein the signal as received by each sensor includes variations resulting from the rotation of the wheel associated with the sensor, wherein the variations of the signal as received by the sensor corresponding to the selected wheel remain constant over time with respect to the signal markings and the variations of the signal as received by each of the remaining sensors varies over time with respect to the signal markings; wherein each sensor correlates the variations of the signal as received by the sensor with the signal markings, wherein the sensor in which the variations of the signal as received by the sensor remain constant over time with respect to the signal markings transmits confirmation to the controller, wherein the controller determines this sensor as corresponding to the selected wheel based on the confirmation.