Patent ID: 7443211

Claim:
A transmission circuit for receiving at least one input signal and providing an output signal according to each of the input signals, the transmission circuit comprising: an edge detecting circuit for detecting rising edges or falling edges of each of the input signals and accordingly providing a detection signal; and a transmitter comprising: two driving circuits, each of the driving circuits having a corresponding input signal and a corresponding output node providing a current at the corresponding output node having a direction according to the corresponding input signal; two load units, each of the load units coupled to the corresponding output node and matching the output impedance of the corresponding output node; and a switch circuit coupled with each of the load units in series to each of the output nodes, wherein one end of each of the load units is coupled to the corresponding output node and the other end of each of the load units is coupled to the switch circuit, receiving the detection signals for controlling each of the load units to sink the current at each of the output nodes according to the detection signal.