Device providing sensible output indicating receipt of data by c
Devices for combining random sequences, using one or more switch
Devices for generating pseudo-random sequences
Dialing system for teleprinter
Differential encoding and decoding scheme for digital transmissi
Differential optical polarization detectors
Differential tri-phase shift keyed modulation
Digital autostart circuit
Digital bit rate converter
Digital bit stream synchronizer
Digital carrier wave detect circuitry
Digital circuit for generating output pulses synchronized in tim
Digital coding without additional bits to provide sign informati
Digital communication systems
Digital computer writing board
Digital convergence of multiple image projectors
Digital cryptographic system and testing thereof
Digital cryptographic system having synchronous and asynchronous
Digital data communication system featuring multi level asynchro
Digital data communications system