Data link in a motor vehicle as well as transmitter unit and receiver unit for such a data link

摘要

The data link in the motor vehicle comprises a transmitting unit (6) and a receiver unit (18), which, by means of a data line to the symmetrical signal transmission from a total of three data signals (s1, s3) are connected to one another. The data line is in this case as a star-quad (16) with two pairs of wires (12,14), wherein the transmitting unit (6) for feeding a first and second transmission signal (u1, u2) in the first vein few (12) as well as for feeding a third and fourth transmission signal (u3, u4) in the second vein few (14) is designed. The transmitting unit (6) and receiver unit (18) are in addition to the transmission of the third data signal (s3) via the star-quad (16) in the manner of a phantom circuit. In the case of the individual data signals (s1, s3) are, in particular, binary data signals, preferably in accordance with a nrz - coding.