Method and apparatus for reducing noise in an electrostatic digi

Method and apparatus for regenerating a modified duobinary signa

Method and apparatus for representing characters

Method and apparatus for securing data transmissions

Method and apparatus for securing data transmissions

Method and apparatus for securing data transmissions

Method and apparatus for securing data transmissions

Method and apparatus for signaling in a communication system

Method and apparatus for simultaneously modulating with picture,

Method and apparatus for stabilized reproduction of remotely-sen

Method and apparatus for synchronizing a receiver end-key genera

Method and apparatus for synchronizing master and local time bas

Method and apparatus for synchronizing the ciphering and deciphe

Method and apparatus for synchronously detecting a differentiall

Method and apparatus for the synchronization of a deciphering de

Method and apparatus for the transmission of data

Method and apparatus for the two-way transmission of pulses

Method and apparatus for time compression of facsimile transmiss

Method and apparatus for transaction and identity verification

Method and apparatus for transmission line termination