Patent ID: 7373228

Claim:
A method for providing registration of a sensor identification associated with a tire air pressure monitoring apparatus, the tire air pressure monitoring apparatus comprising a transmitter for measuring tire air pressure and for transmitting transmission data including measured air pressure and the sensor identification in a communication to a receiver and an external unit, the method comprising: receiving at the external unit the transmission data including the sensor identification from the transmitter; identifying the transmitter that transmitted the transmission data based upon the transmission data, wherein the identifying includes: comparing the sensor identification with a previously set sensor identification; registering the sensor identification in the receiver through a communication between the external unit and the receiver if the sensor identification matches the previously set sensor identification; determining if the transmitter has initially been registered at the receiver; and registering the sensor identification for the transmitter when the transmitter has been determined not to have been initially registered; wherein when it is determined that the transmitter has been initially registered at the receiver, registering a new transmitter identification for the transmitter if the transmitter has been selected to be rewritten.