Patent ID: 7885362

Claim:
A data transmission system, comprising: a transmitter for mixing an original clock signal and an original data signal to generate and output a hybrid differential signal, the hybrid differential signal having a plurality of clock pulses and a plurality of data pulses, wherein at lease one data pulse occurs between two clock pulses, and the period between two clock pulses corresponds to the frequency of the original clock signal, the transmitter comprising: two sets of current sources; and a switch circuit, coupled to the two sets of the current sources, for outputting a first current from one of the two sets of the current sources when the transmitter outputs the clock pulses, and for outputting a second current from the other of the two sets of the current sources when the transmitter outputs the data pulses, the first current and the second current having different current magnitude, so that the clock pulses and the data pulses having different differential swings; and a receiver for receiving the hybrid differential signal via a bus and generating a recovered clock signal and a recovered data signal based on the hybrid differential signal; wherein the hybrid differential signal, the original clock signal and the original data signal are reduced swing differential signals.