Portable rescue device and a method for locating such a device

Details Portable rescue device and a method for locating such a device Portable rescue device and a method for locating such a device

2007-07-17

2007-07-17

Feild, Joseph (Department: 2617)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C370S328000

Reexamination Certificate

active

11009081

ABSTRACT:
A portable rescue device and a method for locating, by means of a first rescue device set in a search mode, a second rescue device set in a distress mode. In the method, a distress signal carrying a device identification is received from said second rescue device. A first bearing and a second bearing to the second rescue device are obtained. The first and second bearings are taken from a first and a second position, respectively. A distance between these positions is determined. A current distance and a current bearing to the second rescue device are determined on basis of the first and second bearings and the distance. The current bearing and the current distance are communicated to a user of the first rescue device.The portable rescue device is used for performing the method and for that purpose it includes a first communication unit for distress signal transmission and reception; a compass; a processor; a user interface; and a mode switch for switching between a search mode and a distress signal mode. The first communication device has an antenna structure that provides directional capability.

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patent: WO 03/083504 (2003-10-01), None

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