Patent ID: 7330104

Claim:
A tire inflation pressure monitoring device, comprising: transmitters attached to respective tires of a vehicle, for transmitting air pressure signals indicative of air pressures in the tires detected by respective air pressure sensors; and a receiver for receiving the air pressure signals from the respective transmitters, the receiver being adapted to generate a warning signal in accordance with the received air pressure signals, wherein the air pressure signal transmitted from each of the transmitters includes an ID of the corresponding transmitter as an ID signal, the receiver is capable of switching a mode thereof to an ID registration mode in which the IDs of the transmitters are registered, and during the ID registration mode, the transmitters are forced to transmit the air pressure signals, and if the number of the air pressure signals received from the transmitters is equal to a predetermined value, the receiver registers the IDs of the transmitters based on the ID signals included in the received air pressure signals.