Device for connecting peripheral units to a line for transmittin

Device for converting an incoming analog signal into an outgoing

Device for developing a neutralization signal for an echo suppre

Device for encrypting each input data bit by at least one keying

Device for generating binary digit pseudo-random sequences

Device for obtaining a jitterstable synchronization of a counter

Device for synchronizing a binary data train in relation to a re

Device for teletypewriters for the deposit of sheet-type recordi

Device for the transmission of push-pull signals across a two-wi

Device for transmission of information by pulse code frequency s

Device for treating male persons suffering from urine incontinen

Devices for combining random sequences, using one or more switch

Devices for generating pseudo-random sequences

Digital carrier wave detect circuitry

Digital circuit for generating output pulses synchronized in tim

Digital cryptographic system and testing thereof

Digital cryptographic system having synchronous and asynchronous

Digital data communication system featuring multi level asynchro

Digital data scrambler and descrambler

Digital demodulator for phase shift keyed signals