System and method for tracking lost subjects
First Claim
1. A method for monitoring and tracking the position of a subject, the method comprising:
- embedding a transponder into an article to be worn by the subject;
installing software in a GPS-enabled receiver for synchronizing and communicating with the transponder, the receiver to be maintained by a user;
storing a unique transponder code in the receiver;
synchronizing the transponder with the receiver based on the unique transponder code;
selectively activating the transponder remotely;
triangulating the geographic position of the transponder by;
fixing a first reference point based on the location of the GPS-enabled receiver;
fixing a second reference point based on the location of a network broadcast site through which the receiver and transponder communicate; and
calculating the location of the transponder based on the angular position of the transponder relative to the network broadcast site; and
determining distance and direction of the transponder from the receiver in order to guide the user in the direction of the transponder.
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Accused Products
Abstract
A method for monitoring and tracking the position of a subject comprises, in an exemplary embodiment, the steps of embedding a transponder into an article to be worn by the subject and installing software in a GPS-enabled receiver, such as a cell phone or the like, for synchronizing and communicating with the transponder. The receiver is to be maintained by a user, such as a guardian or the like, and stores a unique transponder code, allowing the receiver to synchronize with the transponder. The receiver may remotely activate the transponder manually or automatically, at which point the receiver triangulates the geographic position of the transponder and determines distance and direction of the transponder from the receiver in order to guide the user in the direction of the transponder. In further embodiments, the receiver communicates the subject'"'"'s information and tracking code to other subscribing receivers to increase the number of searchers.
28 Citations
16 Claims
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1. A method for monitoring and tracking the position of a subject, the method comprising:
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embedding a transponder into an article to be worn by the subject; installing software in a GPS-enabled receiver for synchronizing and communicating with the transponder, the receiver to be maintained by a user; storing a unique transponder code in the receiver; synchronizing the transponder with the receiver based on the unique transponder code; selectively activating the transponder remotely; triangulating the geographic position of the transponder by; fixing a first reference point based on the location of the GPS-enabled receiver; fixing a second reference point based on the location of a network broadcast site through which the receiver and transponder communicate; and calculating the location of the transponder based on the angular position of the transponder relative to the network broadcast site; and determining distance and direction of the transponder from the receiver in order to guide the user in the direction of the transponder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for monitoring and tracking the position of a subject, the method comprising:
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embedding a transponder into an article to be worn by the subject; installing software in a GPS-enabled host receiver for synchronizing and communicating with the transponder, the host receiver to be maintained by a user; synchronizing the transponder with the host receiver based on a unique transponder code; selectively activating the transponder remotely; triangulating the geographic position of the transponder by; fixing a first reference point based on the location of the GPS-enabled receiver; fixing a second reference point based on the location of a network broadcast site through which the receiver and transponder communicate; and calculating the location of the transponder based on the angular position of the transponder relative to the network broadcast site; determining distance and direction of the transponder from the host receiver in order to guide the user in the direction of the transponder; and selectively activating a network tracking sequence by sending the transponder code to other subscribing receivers. - View Dependent Claims (14, 15, 16)
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Specification