Patent ID: 7508882

Claim:
A method for processing signals in a transmission system having a transmitter subsystem connected to a receiver subsystem by an electrical backplane, wherein the electrical backplane receives a transmitted data signal from the transmitter subsystem and provides a received data signal to the receiver subsystem, the method comprising: in the transmitter subsystem: providing a final binary data signal; and processing the final binary data signal to provide the transmitted data signal to the electrical backplane; and in the receiver subsystem: receiving the received data signal form the electrical backplane; and processing the received data signal as a duobinary data signal, wherein: the transmission system comprises at least one filter located in at least one of the transmitter subsystem and the receiver subsystem; the transfer function property of the combination of the electrical backplane and the at least one filter corresponds to the transfer function property of a binary-to-duobinary converter; and after providing the final binary data signal, no duobinary data signal exists in the transmitter subsystem.