Transmitter for tire condition monitoring apparatus and the tire condition monitoring apparatus

A tire condition monitoring apparatus comprising:

• a transmitter located in a tire of a vehicle;
• a tire condition sensor for detecting the condition of the tire of the vehicle;
• a transmission circuit for transmitting data indicating the tire condition detected by the tire condition sensor using a carrier wave;
• an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency;
• a controller, which corrects the generated carrier wave frequency in accordance with the difference between the characteristic carrier wave frequency and a predetermined reference carrier wave frequency;
• and
• a receiver located in a vehicle body of the vehicle, wherein the receiver receives the data indicating the tire condition transmitted from the transmitter.

A transmitter for a tire condition monitoring apparatus, wherein the transmitter is located in a tire of a vehicle and transmits data indicating the tire condition using a carrier wave, the transmitter comprising:

• an oscillating circuit, which generates a carrier wave frequency, wherein said oscillating circuit has a predetermined characteristic carrier wave frequency;
• a temperature sensor for detecting the internal temperature of the tire;
• and
• a controller, wherein the controller performs a primary correction on the generated carrier wave frequency based on a frequency deviation caused by manufacturing tolerance of the oscillating circuit in accordance with a correction data, and wherein the controller further performs a secondary correction on the generated carrier wave frequency that has been through the primary correction in accordance with the internal temperature detected by the temperature sensor.