Cryptographic communication security for multiple domain network

Cryptographic communication security for single domain networks

Cryptographic file security for single domain networks

CSK communication system

CSK communication system and method for spread spectrum communic

Current mode data bus digital communications system

CVSD Transmission with improved intelligibility of voice signals

CW Interference cancelling system for spread spectrum signals

CW Interference cancelling sytem for spread spectrum signals uti

D/A converter capable of producing an analog signal having level

Data acquisition circuit

Data bit synchronization

Data bit to constellation symbol mapper

Data burst randomizer

Data bus transceiver

Data circuit for frequency modulating an oscillator

Data circuit-terminating equipment

Data communication apparatus and method with low power standby m

Data communication apparatus having bandwidth selection capabili

Data communication apparatus permitting confidential communicati