Secure SCA broadcasting system including subscriber actuated por
Security system and method for securely communicating therein
Security system for SSTV encryption
Selection system for digital signal repeaters
Self-synchronizing descrambler
Sensor magnifying glass apparatus
Serial pulse-code-modulated retiming system
Signal playback system transducer with optical resonance cavity
Signal scrambler-unscrambler for binary coded transmission syste
Signaling system
Signaling system
Signaling system
Signed document transmission system
Simple and effective public-key cryptosystem
Simultaneous transmission of an analog message signal and a digi
Small compact cathode ray oscilloscope assembly
Small packet communication network
Software cryptographic apparatus and method
Software protection device
Software protection methods and apparatus