Patent ID: 7209036
Filing Date: 2007-04-24
Classification: G01C,G01S,H04B

Abstract:
1. A device for guiding a person along a path traveled, the device comprising: a plurality of transponders; an ejection mechanism; a portable ejection means with said ejection mechanism and a container for accommodating said plurality of transponders, said ejection mechanism being connected with the container; a control unit, said ejection mechanism being actuated by said control unit in order to eject a transponder from said container, wherein the container ejects transponders by said ejection mechanism at predetermined time intervals or at predetermined distances in space; a portable transmitter/receiver means for detecting at least one dropped-off transponder and for generating a signal representative of the direction in which the transponder is located; and a portable display means for receiving the direction signal of the transmitter/receiver means and providing a user one of a visual or acoustic display of the direction.