Entry detecting system
First Claim
1. An entry detecting system, comprising:
- a terminal device;
a point-to-point communication device;
an entry detecting device; and
a guard device;
wherein the point-to-point communication device includes a transmitting-receiving antenna having directivity in a specific direction;
the point-to-point communication device communicates by radio with the terminal device via the transmitting-receiving antenna so as to detect a response time from the terminal device and report detected response time to the entry detecting device;
the entry detecting device detects a distance from the point-to-point communication device to the terminal device based on the response time reported by the point-to-point communication device, generates entry detecting information based on the detected distance, and transmits the entry detecting information to the point-to-point communication device and the guard device;
the point-to-point communication device transmits the received entry detecting information to the terminal device;
the terminal device outputs an alarm in a case where the terminal device receives the entry detecting information from the point-to-point communication device; and
the guard device outputs an alarm in a case where the guard device receives the entry detecting information from the entry detecting device.
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Accused Products
Abstract
An entry detecting system includes a terminal device; a point-to-point communication device; an entry detecting device; and a guard device. The point-to-point communication device includes a transmitting-receiving antenna having directivity in a specific direction. The point-to-point communication device communicates by radio with the terminal device via the transmitting-receiving antenna so as to detect a response time from the terminal device and report detected response time to the entry detecting device. The entry detecting device detects a distance from the point-to-point communication device to the terminal device based on the response time reported by the point-to-point communication device, generates entry detecting information based on the detected distance, and transmits the entry detecting information to the point-to-point communication device and the guard device. The point-to-point communication device transmits the received entry detecting information to the terminal device. The terminal device outputs an alarm in a case where the terminal device receives the entry detecting information from the point-to-point communication device. The guard device outputs an alarm in a case where the guard device receives the entry detecting information from the entry detecting device.
14 Citations
6 Claims
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1. An entry detecting system, comprising:
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a terminal device; a point-to-point communication device; an entry detecting device; and a guard device; wherein the point-to-point communication device includes a transmitting-receiving antenna having directivity in a specific direction; the point-to-point communication device communicates by radio with the terminal device via the transmitting-receiving antenna so as to detect a response time from the terminal device and report detected response time to the entry detecting device; the entry detecting device detects a distance from the point-to-point communication device to the terminal device based on the response time reported by the point-to-point communication device, generates entry detecting information based on the detected distance, and transmits the entry detecting information to the point-to-point communication device and the guard device; the point-to-point communication device transmits the received entry detecting information to the terminal device; the terminal device outputs an alarm in a case where the terminal device receives the entry detecting information from the point-to-point communication device; and the guard device outputs an alarm in a case where the guard device receives the entry detecting information from the entry detecting device. - View Dependent Claims (2, 3)
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4. An entry detecting system, comprising:
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a terminal device; a point-to-point communication device; and a guard device; wherein the point-to-point communication device includes a transmitting-receiving antenna having directivity in a specific direction; the point-to-point communication device communicates by radio with the terminal device so as to detect a response time from the terminal device and measure distance to the terminal device based on the detected response time; the point-to-point communication device reports the entry detecting information corresponding to the measured distance to the terminal device and the guard device; and the terminal device and the guard device output alarms when receiving the entry detecting information from the point-to-point communication device. - View Dependent Claims (5, 6)
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Specification