Fault isolation in communications circuits

Filtered transition distortion channel quality monitor

Frame synchronizing device

Frequency sample-and-hold circuit

Full-duplex communication system on a two wire line

Initial acquisition signal detection system for TDMA satellite c

Method and a device for generating line rasters in an infra-red

Method and apparatus for encoding data and clock information in

Method and apparatus for monitoring intermediate regenerative re

Method and apparatus for recovering data and clock information i

Method and apparatus for synchronizing a receiver end-key genera

Method and apparatus for synchronizing master and local time bas

Method and apparatus for transmission line termination

Method and device for synchronizing the receiver clock in a data

Method and means for pulse receiver synchronization

Method and switching arrangement for synchronizing oscillators o

Method for bit-synchronous transmission of data

Method for indicating a free-line state in a binary data communi

Method for the regulation of the phase of a timing signal in a d

Method of and apparatus for testing transmission line carrying b