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
Full Text: