Patent ID: 7331222

Claim:
A remote tire pressure monitoring system comprising: a tire monitor provided on a wheel of a vehicle, the tire monitor being configured to operate in a power saving mode, in which the tire monitor senses inflation pressure of a tire fitted on the wheel, determines a change in the inflation pressure of the tire, and transmits a pressure transmitting signal containing information on the sensed inflation pressure of the tire only when the determined change in the inflation pressure of the tire is greater than or equal to a predetermined threshold; a receiver working to receive the pressure transmitting signal transmitted by the tire monitor; a transmitter working to transmit an acknowledge signal; a controller operatively connected with the receiver and the transmitter, the controller working to determine, upon receipt of the pressure transmitting signal by the receiver, the inflation pressure of the tire based on the information contained in the pressure transmitting signal, the controller also working to control, in response to receipt of the pressure transmitting signal by the receiver, the transmitter to transmit the acknowledge signal to inform the tire monitor that the receiver has received the pressure transmitting signal.