Patent ID: 7825691

Claim:
A transmission circuit for receiving an input signal and providing a corresponding output signal at a corresponding output node, the transmission circuit comprising: an auxiliary circuit, providing at least an auxiliary signal according to the input signal; and a transmitter comprising: at least a driving unit, each driving unit individually providing a load current to the output node according to a level of the input signal; and at least the charge unit, wherein each charge unit is electrically connected to the output node and each charge unit is individually corresponding to one of the auxiliary signals; wherein each driving unit in the transmitter is a metal-oxide semiconductor (MOS) transistor, and the transmitter provides a charge unit for each driving unit accordingly; each charge unit comprises a capacitor form MOS transistor, and the capacitor form MOS transistor and the MOS transistor of the corresponding driving unit are of a same type, wherein when a level transition occurs in the auxiliary signal, the charge unit is able to inject different charges to the output node according to a level transition trend and the level of the auxiliary signal is coupled to the output node, wherein the transmitter is able to receive a first input signal and a second input signal that are differential and individually provide two corresponding output signals to first and second output nodes accordingly, the auxiliary circuit provides at least a first auxiliary signal and a second auxiliary signal, and the auxiliary circuit provides the first auxiliary signal according to the second input signal and provides the second auxiliary signal according to the first input signal.