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Privacy Communication Method & System

Abstract: 

A privacy communication method and system which utilizes coherent, continuously changing frequencies for keyed, pulsed, and voice communications. A synthesized swept frequency or "chirp" signal imparts a privacy or secure communications capability to the communications signal by virtue of the random or pseudo-random nature of the transmitted signals which is programmed.

Patent Number: 
4,244,053
Date Of Issue: 
01/06/1981
Inventors: 

Paul E. Martin;Marvin R. Clinch;Calvin R. Graf;Robert B. Fenwick