Privacy signal transmission system
Process for conducting secure electronic transactions over...
Process for searching for synchronization on reception of a...
Process for the transmission and reception of conditional...
Product block cipher system for data security
Protection system for intelligent cards
Radio jamming systems
Radio signalling equipment
Radio transmission and monitoring system
Radio transmitter/receiver for digital and analog...
Radiotelephone filtering apparatus
Rapid anti-jam frequency-hopping time synchronization
Receiver for bandspread signals
Restoring framing in a communications system
Restricted access line circuit for a communications system
Roaming encryption key rekeying apparatus and method
Satellite communications system having increased power...
Satellite receiver retuning system
Scrambled communication system using adaptive transversal...
Scrambling in digital communications network