Transmitting/receiving circuit and signal transmission system formed therewith

A transmitting/receiving circuit for signal transmission, the transmitting/receiving circuit comprising:

• a receiver circuit with a signal input for a differential voltage signal and with a data output for a data signal;
• a transmitter circuit with an electronic current source with a first electrical pole and with a second electrical pole, with a data input for a data signal, and with a signal output having a first connection pole and a second connection pole for a differential voltage signal;
• a first resistance element;
• a second resistance element;
• and
• a connecting device with a first connection pole and with a second connection pole,
• wherein the first connection pole of the transmitter circuit is electrically connected to the first connection pole of the connection device with the first resistance element connected therebetween, and the second connection pole of the transmitter circuit is electrically connected to the second connection pole of the connection device with the second resistance element connected therebetween, and
• wherein the transmitter circuit has at least two operating modes, such that the transmitter circuit is configured in a first operating mode to convert a data signal at the data input into a differential voltage signal at the signal output, depending upon a signal state of the data signal, to electrically connect or keep interconnected the first pole to one of the first and second connection poles of the signal output and, complementarily thereto, the second pole to the other of the first and second connection poles or, depending upon a signal edge of the data signal, to swap electrical connections established between the first and second poles and a different one of the first and second connection poles of the signal output, and that the transmitter circuit is configured in a second operating mode to electrically short-circuit or keep short-circuited the first and second connection poles of the signal output.

A signal transmission system, comprising:

• a transmitting/receiving circuit for signal transmission, the transmitting/receiving circuit including:
• a receiver circuit with a signal input for a differential voltage signal and with a data output for a data signal;
• a transmitter circuit with an electronic current source with a first electrical pole and with a second electrical pole, with a data input for a data signal, and with a signal output having a first connection pole and a second connection pole for a differential voltage signal;
• a first resistance element;
• a second resistance element;
• and
• a connecting device with a first connection pole and with a second connection pole,
• wherein the first connection pole of the transmitter circuit is electrically connected to the first connection pole of the connection device with the first resistance element connected therebetween, and the second connection pole of the transmitter circuit is electrically connected to the second connection pole of the connection device with the second resistance element connected therebetween, and
• wherein the transmitter circuit has at least two operating modes, such that the transmitter circuit is configured in a first operating mode to convert a data signal at the data input into a differential voltage signal at the signal output, depending upon a signal state of the data signal, to electrically connect or keep interconnected the first pole to one of the first and second connection poles of the signal output and, complementarily thereto, the second pole to the other of the first and second connection poles or, depending upon a signal edge of the data signal, to swap electrical connections established between the first and second poles and a different one of the first and second connection poles of the signal output, and that the transmitter circuit is configured in a second operating mode to electrically short-circuit or keep short-circuited the first and second connection poles of the signal output.