Advanced science.  Applied technology.

Search

Privacy Communication Method & System: 4,244,053

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: 
01/05/1981
Inventors: 

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