Patent ID: 7791460

Claim:
A vehicle body-based transceiver, which is provided on a body of a vehicle to perform wireless communication with a wheel-based transceiver that is provided on a wheel of the vehicle and configured to receive a request signal conveying first information and transmit, in response to receipt of the request signal, a response signal that conveys tire pressure information on inflation pressure of a tire fitted on the wheel and second information having a predefined relationship with the first information, comprising: a transmitter; a receiver; and a controller operatively connected to the transmitter and the receiver, the controller being configured to: control the transmitter to transmit the request signal conveying the first information, control the receiver to receive the response signal that conveys the tire pressure information and the second information, identify the response signal received by the receiver as being transmitted by the wheel-based transceiver based on the fact that the second information is conveyed by the response signal, and determine the inflation pressure of the tire based on the tire pressure information conveyed by the identified response signal; wherein the response signal does not include ID information that specifically identifies the wheel-based transceiver, the second information is generated by the wheel-based transceiver based on the first information and the predefined relationship, and the second information is identical to the first information.