Method for locating a transmitter and receiver device

Details Method for locating a transmitter and receiver device Method for locating a transmitter and receiver device

2005-08-02

2005-08-02

Crosland, Donnie L. (Department: 2636)

Communications: electrical

Condition responsive indicating system

With particular system function

C340S539210, C340S539320

Reexamination Certificate

active

06924738

ABSTRACT:
A method, and a device for its implementation, for locating a transmitter and receiver device, are provided. At least one first transmitter and receiver device transmits a request with a predetermined transmission power, this request is received by at least one second transmitter and receiver device with a predetermined receiving power and after successful receipt the second transmitter and receiver device, of which there is at least one, transmits a response signal, with the response signal only being transmitted if the field strength of the transmitted signal in the position of the second transmitter and receiver device exceeds a specific threshold value or is within a threshold range and the threshold value or threshold range is predetermined by the first transmitter and receiver device by transmission to the second transmitter and receiver device.

REFERENCES:
patent: 5289163 (1994-02-01), Perez et al.
patent: 5677673 (1997-10-01), Kipnis
patent: 5680105 (1997-10-01), Hedrick
patent: 5796338 (1998-08-01), Mardirossian
patent: 43 30 118 (1995-01-01), None
patent: 198 61 116 (2002-05-01), None

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