US Patent Issued to Signal Advance on July 21 for "Signal protection and retrieval by non-linear analog modulation" (Canadian, American Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,512, issued on July 21, was assigned to Signal Advance Inc. (Rosharon, Texas).

"Signal protection and retrieval by non-linear analog modulation" was invented by Naser Otman (Halifax, Canada), Chris M. Hymel (Rosharon, Texas), Alan Nightingale (Halifax, Canada) and Ron Stubbers (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method is disclosed wherein an analog message signal is received with a finite length. An analog key signal is also received having a finite length at least as long as the analog message signal. An encryption carrier is generated and then an encryption operation initiated to encrypt the analog message. First, the encryp...