Receiver of tire inflation pressure monitor
First Claim
1. A receiver located in a body of a vehicle for receiving tire inflation pressure data transmitted by radio waves from a plurality of transmitters, wherein the receiver includes a plurality of reception antennas for receiving the radio waves from the transmitters and a unit for processing the received data, the reception antennas comprising:
- at least one external reception antenna, which is separated from the unit, wherein each external reception antenna corresponds to at least one of the transmitters; and
at least one internal reception antenna, which is located in the unit, wherein each internal reception antenna corresponds to the remaining transmitter or transmitters.
1 Assignment
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Accused Products
Abstract
A tire inflation pressure monitor includes wheel transmitters and a receiver. The wheel transmitters transmit tire inflation pressure data by radio waves, and the receiver receives the data from the transmitters. The receiver includes reception antennas for receiving radio waves from the transmitters and a receiver unit for processing the received data. The reception antennas include external reception antennas, which are separated from the receiver unit, and at least one internal reception antenna, which is located in the receiver unit. The number of the external reception antennas is less than that of the transmitters by one. As a result, the receiver is simplified without reducing its performance. Also, a loop antenna, which is used as a reception antenna to induce voltage by the magnetic field component of radio waves, improves the efficiency of the receiver.
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Citations
20 Claims
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1. A receiver located in a body of a vehicle for receiving tire inflation pressure data transmitted by radio waves from a plurality of transmitters, wherein the receiver includes a plurality of reception antennas for receiving the radio waves from the transmitters and a unit for processing the received data, the reception antennas comprising:
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at least one external reception antenna, which is separated from the unit, wherein each external reception antenna corresponds to at least one of the transmitters; and
at least one internal reception antenna, which is located in the unit, wherein each internal reception antenna corresponds to the remaining transmitter or transmitters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A receiver located in a body of a vehicle for receiving tire inflation pressure data transmitted by radio waves from a plurality of transmitters, wherein the receiver includes a plurality of reception antennas for receiving the radio waves from the transmitters and a unit for processing the received data, the reception antennas comprising:
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at least one external reception antenna, which is separated from the unit; and
at least one internal reception antenna, which is located in the unit, wherein the number of the tires is four and the number of the transmitters is four, wherein each of the transmitters is installed in one of the tires, wherein the external reception antennas correspond respectively to three of the tires, and the internal reception antenna corresponds to the remaining tire.
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15. A tire inflation pressure monitor including a plurality of transmitters located respectively in proximity to the tires of a vehicle for transmitting tire inflation pressure data by radio waves and including a receiver located in a vehicle body for receiving data from the transmitters, the receiver comprising:
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a unit for processing the received data; and
a plurality of reception antennas for receiving radio waves from the transmitters, the reception antennas including;
a plurality of external reception antennas, which are separated from the unit, wherein the number of the external reception antennas is smaller than that of the transmitters, and wherein each of the external reception antennas corresponds to at least one of the transmitters; and
one internal reception antenna, which is located in the unit, wherein the internal reception antenna corresponds to the remaining transmitter or transmitters. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification