ROLLING CODE SECURITY SYSTEM

• Main Authors: FARRIS, BRADFORD L, FITZGIBBON, JAMES J
• Format: Patent
• Language: English; French
• Published: 29.07.2008
• Subjects: BASIC ELECTRONIC CIRCUITRY; CHECKS FOR WINGS; CODE CONVERSION IN GENERAL; CODING; DECODING; DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; FIXED CONSTRUCTIONS; KEYS; LOCKS; PHYSICS; SAFES; SIGNALLING; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS; WINDOW OR DOOR FITTINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING

A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates the encrypted RF transmission and recovers the fixed code and rolling code. Upon comparison of the fixed...