Combined transmitter
AssigneeVIA Technologies, Inc.
InventorsYu-Feng Cheng, Wen-Bo Liu, Ken-Ming Li, Vai-Hang Au, Zhen-Yu Song
Life of this patent
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Abstract
A combined transmission unit for TMDS signals and LVDS signals. First (LVDS) and second (TMDS) transmission units are both coupled to a first set of input terminals. A switching controller, according to a mode selection signal, enables the first transmission unit to transmit the first data on the set of input terminals to first external input units through a pair of first signal lines or enables the second transmission unit to transmit the first data on the set of input terminals to the second external input units through a pair of second signal lines.
Claims20
A combined transmitter for transmitting video signals, comprising:
- a set of input terminal for receiving first data;
- a first transmission unit, coupled to the set of input terminals, comprising a plurality of first drivers each capable of sending a first differential signal to a first external input unit through a pair of first signal lines, wherein the first external input unit comprises a first resistor coupled between the first signal lines;
- a second transmission unit, coupled to the first set of input terminals, comprising a plurality of second drivers each capable of sending a second differential signal to a second external input unit through a pair of second signal lines, wherein the second external input unit comprising second resistors each coupled between a power rail in the second external input unit and one of the second signal lines;
- and
- a switching controller enabling the first transmission unit to transmit the first data on the set of input terminals or enabling the second transmission unit to transmit the first data on the set of input terminals, according to a mode selection signal.
A combined transmitter for transmitting video signals, comprising:
- a set of input terminal for receiving first data;
- a first transmission unit, coupled to the set of input terminal, comprising a plurality of first drivers 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 pair of signal lines;
- a second transmission unit, coupled to the set of input terminals, comprising a plurality of second drivers each capable of 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 two resistors each coupled between a power rail in the second external input unit and one of the pair of signal lines;
- and
- a switching controller enabling the first transmission unit to transmit the first data on the set of the input terminal or enabling the second transmission unit to transmit the first data on the set of the input terminal, according to a mode selection signal.
Dependencies are inferred from the claim text.