Patent ID: 7471285

Claim:
A combined transmitter for transmitting video signals, comprising: a first transmission unit, comprising a set of first input terminals to receive first data and a plurality of first drivers each capable of sending a first differential signal to a first external input unit through a pair of signal lines, wherein the pair of signal lines of each first drivers coupled to a set of common output line, wherein the first external input unit comprises a first resistor coupled between the first signal lines; a second transmission unit comprising a set of second input terminals to receive second data and a plurality of second drivers each capable sending a second differential signal to a second external input unit through a pair of signal lines, wherein the pair of signal lines of each second drivers coupled to the set of common output line, wherein the second external input unit comprises a plurality of second resistors each coupled between a power rail in the second external input unit and one of the first signal lines; and a switching controller enabling the first transmission unit to transmit the first data or enabling the second transmission unit to transmit the second data, according to a mode selection signal.