Location information detecting method and system
First Claim
1. A location information detecting method for reading information stored in a radio IC tag, using an interrogator unit, when a mobile object which has the interrogator unit moves into communication range with the radio IC tag and the interrogator unit sends radio waves to the radio IC tag;
- wherein the radio IC tag, which is securely attached to the fixed object, stores information relating to the location of the fixed object and sends the stored information upon receiving a power supply from the received radio signal.
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Accused Products
Abstract
A method and system for detecting information relating to the location of a radio IC tag, using an interrogator unit. In one implementation of such method and system, a radio IC tag is securely attached to a fixed object, and a mobile object that has an interrogator unit moves into communication range with the radio IC tag. As the interrogator unit sends radio waves to the radio IC tag, the radio IC tag existing in the communication range sends reflected waves to the interrogator unit. When the interrogator unit receives the reflected waves, it detects and demodulates the reflected waves. The interrogator unit then reads information relating to the location of the radio IC tag as the information stored in the radio IC tag.
10 Citations
9 Claims
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1. A location information detecting method for reading information stored in a radio IC tag, using an interrogator unit, when a mobile object which has the interrogator unit moves into communication range with the radio IC tag and the interrogator unit sends radio waves to the radio IC tag;
- wherein the radio IC tag, which is securely attached to the fixed object, stores information relating to the location of the fixed object and sends the stored information upon receiving a power supply from the received radio signal.
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2. A location information detecting system comprising:
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a radio IC tag that is attached to a fixed object, stores information relating to the location of the fixed object, and sends the stored information upon receiving a power supply from the received radio waves;
an interrogator unit that is attached to a mobile object, sends radio waves, and reads information stored on the radio IC tag by communication with the radio IC tag existing in a communication range. - View Dependent Claims (4, 6, 7, 8, 9)
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3. A location information detecting system comprising:
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a radio IC tag that is attached to a fixed object, stores information relating to the location of the fixed object, and sends the stored information upon receiving a power supply from the received radio waves;
an interrogator unit that is attached to a mobile object, sends radio waves, receives reflected radio waves from the radio IC tag existing in a communication range, and reads information stored on the radio IC tag from the received reflected waves. - View Dependent Claims (5)
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Specification