Patent ID: 6873257
Filing Date: 2005-03-29
Classification: G01S

Abstract:
1. A position locating device for identifying the distance and direction from a first object located with a user to a second object comprising; a) a first electromagnetic signal transmitter for transmitting a first signal from the first object to the second object; b) a second electromagnetic signal transmitter for transmitting a second signal from the second object to the first object; c) a first receiver for enabling the first object to receive and decode the second signal from the second object; d) a second receiver for enabling the second object to receive and decode the first signal from the first object; e) activation means for activating the first transmitter; f) activation means for activating the second transmitter and enabling it to respond to the signal transmitted from the first transmitter; g) a plurality of microphones located at the first object for receiving and transmitting the second signal to the first receiver; and h) a processor for determining the location of the second object by analyzing the time at which each microphone received the second signal and the second signal's intensity.