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US 2004/0000994 A1Published application
Searching system
AssigneeLite-On Technology Corporation
InventorChunn-Cherh Kuo
Life of this patent
Estimating the term…
Abstract
A searching system employs a global positioning system (GPS) and a wireless communication system to enable a second transceiver to trace the distance and the directions of a plurality of first transceivers. The first transceiver can automatically call the second transceiver user when the user of the first transceiver is at rest in excess of a predetermined interval or has a body temperature lower than a critical value. The user of the first transceiver can push an emergency button on the first transceiver to call the user of the second transceiver for help.
Claims12
A searching system comprising:
- a plurality of global positioning system (GPS) satellites;
- at least one first transceiver for receiving a first GPS signal from the GPS satellites and returning a first position thereof through a first wireless communication unit;
- at least one second transceiver for receiving a second GPS signal from the GPS satellites, calculating a second position thereof and the first position received through a second wireless communication unit so as to achieve a relative position of the first transceiver with respect to the second transceiver, and displaying the relative position through a coordinated map.
Dependencies are inferred from the claim text.