Portable locator system and method
First Claim
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1. A locator system comprising:
- at least one locator device having a receiver structured and configured to receive electromagnetic frequency signals from a plurality of visible radiolocation transmitters and generate positional data of said locator device from said electromagnetic frequency signals;
a cellular modem operatively coupled to said locator device to transmit said positional data;
a telecommunication provider in wireless communication with said cellular modem to receive said positional data from said cellular modem;
a server computer in network communication with said telecommunication provider to receive said positional data from said telecommunication provider, said server computer having software residing therein to publish said positional data;
a subscriber computer in network communication with said server computer to receive and display said positional data; and
a power source coupled to said locator device and to said cellular modem, said locator device including power conserving software residing therein, said power conserving software carrying out the operation of monitoring synchronization of said receiver with said radiolocation transmitters, reducing power to said cellular modem when said synchronization is lost, and restoring power to said cellular modem when said synchronization is reestablished.
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Abstract
A tracking and locating system and method which provides for a lightweight and portable tracking locator device. The locating system is easily transferable from one user to another user or from a first object to second object. The locating system also provides power saving and conserving features. The locating system further provides positional information of such locator devices in the form of hypertext markup language pages viewable on the Internet.
407 Citations
11 Claims
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1. A locator system comprising:
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at least one locator device having a receiver structured and configured to receive electromagnetic frequency signals from a plurality of visible radiolocation transmitters and generate positional data of said locator device from said electromagnetic frequency signals;
a cellular modem operatively coupled to said locator device to transmit said positional data;
a telecommunication provider in wireless communication with said cellular modem to receive said positional data from said cellular modem;
a server computer in network communication with said telecommunication provider to receive said positional data from said telecommunication provider, said server computer having software residing therein to publish said positional data;
a subscriber computer in network communication with said server computer to receive and display said positional data; and
a power source coupled to said locator device and to said cellular modem, said locator device including power conserving software residing therein, said power conserving software carrying out the operation of monitoring synchronization of said receiver with said radiolocation transmitters, reducing power to said cellular modem when said synchronization is lost, and restoring power to said cellular modem when said synchronization is reestablished. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A locator system comprising:
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at least one locator device, having a receiver and a CPU coupled to said receiver, said receiver structured and configured to receive electromagnetic frequency signals from a plurality of visible global positioning satellite transmitters, said receiver further structured and configured to convert said electromagnetic frequency signals into serial data, said receiver further structured and configured to communicate said serial data to said CPU, said CPU having software residing therein which generates positional data of said locator device from said serial data;
a cellular modem coupled to said locator device, said CPU further having software residing therein which communicates said positional data to said cellular modem;
a telecommunication provider in wireless communication with said cellular modem to receive said positional data of said locator device from said cellular modem;
a server computer in network communication with said telecommunication provider to receive said positional data of said locator device from said telecommunication provider, said server computer having software residing therein to publish said positional data;
a subscriber computer in network communication with said server computer to receive said positional data, said positional data viewable on said subscriber computer; and
a power source coupled to said locator device and to said cellular modem, said locator device including a power conserving software, said power conserving software carrying out the operation of monitoring synchronization of said receiver with said plurality of visible global positioning satellite transmitters, reducing power to said cellular modem when said synchronization is lost, and restoring power to said cellular modem when said synchronization is reestablished.
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9. A method for locating a locator device comprising:
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receiving electromagnetic frequency signals from a plurality of visible radiolocation transmitters;
generating positional data of said locator device from said electromagnetic frequency signals;
transmitting said positional data from a cellular modem;
receiving said positional data transmitted from said cellular modem by a telecommunication provider in wireless communication with said cellular modem;
providing said positional data to a server computer networked with said telecommunication provider;
publishing said positional data in said server computer;
linking a subscriber computer in network communication with said server computer to receive and display said positional data;
providing power to said cellular modem;
monitoring synchronization of said locator device with said radiolocation transmitters;
reducing power to said cellular modem when said monitoring synchronization determines synchronization is lost; and
restoring power to said cellular modem when said monitoring synchronization determines synchronization is reestablished. - View Dependent Claims (10, 11)
calculating rate of change of position of said locator device from said positional information;
reducing rate of transmission by said cellular modem when said calculating rate of change of position determines rate of change of position has decreased; and
increasing rate of transmission by said cellular modem when said calculating rate of change of position determines rate of change of position has increased.
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Specification