LOCATION OF COOPERATIVE TAGS WITH PERSONAL ELECTRONIC DEVICE
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Accused Products
Abstract
The present disclosure relates to location and communication systems that can be utilized for locating people, pets and other objects with a software defined radio set. A personal electronic device (PED) such as a cellular telephone, personal data assistant (PDA) or other device that include a software defined radio set can be configured for operation as a locator device. The PED transmits a signal A transponder or micro-transponder (MT) that is tagged to an object is arranged to reply to a transmission received from the PED. The PED based locator is arranged to calculate a distance between the PED and the MT using the time-of-flight (TOF) between the transmission and the receipt of a reply. The absolute geographic position of the PED can be determined using satellite navigation information, while the position of the MT relative to the PED can be determined from the TOF information.
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Citations
41 Claims
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1-26. -26. (canceled)
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27. A method for determining the relative position of a transponder with a radio transceiver in personal electronic devices that also each include a satellite navigation system, the method comprising:
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identifying a target ID associated with the transponder; sending a transponder location request to each of the personal electronic devices; receiving a location and distance measurement from each of the personal electronic devices after sending the transponder location request; and calculating a location associated with the transponder from at least a portion of the received location and distance measurements by; determining a circle for each received distance measurement at a geographic position associated with the corresponding received location; identifying a common point area that is created by an overlap of circles; and identifying the location and distance to the transponder based on the identified common point area. - View Dependent Claims (28, 29, 30, 31)
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32-36. -36. (canceled)
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37. A system for determining the relative position of a transponder with personal electronic devices, the method comprising:
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a transponder; a satellite navigation system; personal electronic devices (PEDs) that each comprise a radio transceiver; a computing device that is configured to identify a target ID associated with the transponder and send a transponder location request to the PEDs;
wherein each of the PEDs is configured to perform operations, comprising;receive the transponder location request; determine a location and distance measurement of the transponder; send the location and distance measurement to the computing device; the computing device performing actions, comprising; receiving the location and distance measurements from at least a portion of the PEDs; calculating a location associated with the transponder from at least a portion of the received location and distance measurements by; determining a circle for each received distance measurement at a geographic position associated with the corresponding received location; identifying a common point area that is created by an overlap of circles; and identifying the location and distance to the transponder based on the identified common point area. - View Dependent Claims (38, 39, 40, 41)
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Specification