POSITION DETECTING SYSTEM, RESPONDER AND INTERROGATOR, WIRELESS COMMUNICATION SYSTEM, POSITION DETECTING METHOD, POSITION DETECTING PROGRAM, AND INFORMATION RECORDING MEDIUM
First Claim
1. A responder comprising:
- a generating means that generates a response signal, using a pulse signal that is received through a wideband antenna;
a transmitting means that transmits the pulse signal received through the wideband antenna from the wideband antenna to the generating means and also transmits the response signal from the generating means to the wideband antenna, the transmitting means having a predetermined length; and
the wideband antenna that receives the pulse signal and transmits the response signal.
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Accused Products
Abstract
There is provided a radio communication system capable of distinguishing objects from one another while taking advantage of the low power consumption and distance measurement ability of the radio communication of the UWB method. A radio tag TGn includes: a characteristic impedance unit (3) for generating a response signal by using a pulse signal received from a broad-band antenna (1); a transmission path (2) having a predetermined length, transmitting the pulse signal received by the broad-band antenna (1) from the broad-band antenna (1) to the characteristic impedance unit (3), and transmitting the generated response signal from the characteristic impedance unit (3) to the broad-band antenna (1); and the broad-band antenna (1) for receiving the pulse signal and transmitting the response signal. The aforementioned pulse wave is transmitted to the radio tag TGn by the UWB method. The response signal from the radio tag TGn is received and the radio tag TGn is identified from the reception waveform.
83 Citations
37 Claims
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1. A responder comprising:
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a generating means that generates a response signal, using a pulse signal that is received through a wideband antenna;
a transmitting means that transmits the pulse signal received through the wideband antenna from the wideband antenna to the generating means and also transmits the response signal from the generating means to the wideband antenna, the transmitting means having a predetermined length; and
the wideband antenna that receives the pulse signal and transmits the response signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A position detecting system that includes a plurality of interrogators each transmitting a pulse signal as an interrogating wave, and a responder that receives the pulse signal and returns a response signal based on the received pulse signal,
the position detecting system comprising: -
a first distance detecting means that receives the pulse signal transmitted by each of the interrogators and detects the distance between each two of the interrogators;
a second distance detecting means that detects the distance between each of the interrogators and the responder, based on the pulse signal and the response signal; and
a device position detecting unit that detects the position of each of the interrogators and the responder in the position detecting system, based on each of the detected distances. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A position detecting method that is utilized in a position detecting system that includes a plurality of interrogators each transmitting a pulse signal as an interrogating wave, and a responder that receives the pulse signal and returns a response signal based on the received pulse signal,
the position detecting method comprising: -
a first distance detecting step of detecting the distance between each two of the interrogators after receiving the pulse signal transmitted by each of the interrogators;
a second distance detecting step of detecting the distance between each of the interrogators and the responder, based on the pulse signal and the response signal; and
a device position detecting step of detecting the position of each of the interrogators and the responder in the position detecting system, based on each of the detected distances. - View Dependent Claims (35)
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36. A position detecting program that is executed in a position detecting system that includes a plurality of interrogators each transmitting a pulse signal as an interrogating wave, and a responder that receives the pulse signal and returns a response signal based on the received pulse signal,
the position detecting program causes a computer in the position detecting system to function as: -
a first distance detecting means that detects the distance between each two of the interrogators after receiving the pulse signal transmitted by each of the interrogators;
a second distance detecting means that detects the distance between each of the interrogators and the responder, based on the pulse signal and the response signal; and
a device position detecting unit that detects the position of each of the interrogators and the responder in the position detecting system, based on each of the detected distances. - View Dependent Claims (37)
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Specification