Patent ID: 8406337

Claim:
A system for transmitting a DC-balanced signal to a receiver via a transmission line having an input and an output, the output of the transmission line electrically coupled to the receiver, the system comprising: a transmitter having an output stage comprising differentially-connected transistors and respective load resistors, wherein the transmission line is connected to a node between one of the transistors and its respective load resistor, the transmitter operable to impose the DC-balanced signal on the input of the transmission line, the DC-balanced signal having a high state and a low state, each having a respective DC level; and means, operable prior to the transmitter imposing the DC-balanced signal on the input of the transmission line, for holding the input of the transmission line at an intermediate DC level, the intermediate DC level intermediate between the DC levels of the high state and the low state of the DC-balanced signal, and the intermediate DC level not equal to zero volts, the means for holding having a switch operable to connect the load resistors in parallel.