Pulse or digital communications – Cable systems and components – Transformer coupling
Reexamination Certificate
2007-03-20
2007-03-20
Phu, Phuong (Department: 2611)
Pulse or digital communications
Cable systems and components
Transformer coupling
C375S257000, C375S219000, C375S220000, C375S221000, C375S350000, C370S286000, C379S406100
Reexamination Certificate
active
09737743
ABSTRACT:
A communication circuit includes a near end replication transmitter and a hybrid having an input in communication with an output of the near end transmitter. A high pass filter is responsive to the near end replication transmitter. A subtractor subtracts an output of the high pass filter from the output of the near end transmitter and an output of the hybrid. A near end receiver is responsive to an output of the subtractor. The near end replication transmitter is adjustable and includes a current generator in communication with an adjustable load.
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