System and method for location determination using time differences
First Claim
1. A system for location determination using time differences, comprising:
- a directional transmitter, rotating at an angular velocity, for transmitting a transmission signal, the transmission signal comprising a transmission identification and a transmitting time;
an omnidirectional transceiver, for receiving the transmission signal, adding a personal identification to the transmission signal to be a response signal, and transmitting the response signal; and
an omnidirectional receiver, for receiving the response signal from the omnidirectional transceiver and recording a receiving time, the directional transmitter and the omnidirectional receiver disposed in a wireless transceiver device for calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time.
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Accused Products
Abstract
The present invention relates to a system and a method for location determination using time differences. The method of the invention comprises the steps of: transmitting a transmission signal by using a directional transmitter rotating at an angular velocity, the transmission signal comprising a transmission identification and the transmitting time; receiving the transmission signal by using an omnidirectional transceiver, and adding a personal identification to the transmission signal to be a response signal; transmitting the response signal; receiving the response signal by using an omnidirectional receiver and recording the receiving time; and calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time. By utilizing the system and the method of the invention, the corresponding location of the omnidirectional transceiver can be calculated accurately without disposing a lot of sensors in the space, and the system of the invention need not be reconfigured for new environments. Therefore, the conventional problems of high installation cost and complicated settings can be improved.
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Citations
13 Claims
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1. A system for location determination using time differences, comprising:
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a directional transmitter, rotating at an angular velocity, for transmitting a transmission signal, the transmission signal comprising a transmission identification and a transmitting time; an omnidirectional transceiver, for receiving the transmission signal, adding a personal identification to the transmission signal to be a response signal, and transmitting the response signal; and an omnidirectional receiver, for receiving the response signal from the omnidirectional transceiver and recording a receiving time, the directional transmitter and the omnidirectional receiver disposed in a wireless transceiver device for calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for location determination using time differences, comprising the steps of:
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continuously transmitting a transmission signal by using a directional transmitter rotating at an angular velocity, the transmission signal comprising a transmission identification and a transmitting time; receiving the transmission signal by using an omnidirectional transceiver, adding a personal identification to the transmission signal to be a response signal, and transmitting the response signal; receiving the response signal by using an omnidirectional receiver and recording a receiving time; and calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time. - View Dependent Claims (11, 12, 13)
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Specification