Abstract: The method of transmitting data as a sequence of high bits and low bits over a transmission line from a transmitting device to a receiving device includes transmitting synchronization signals over the transmission line and transmitting one and only one high bit or one and only one low bit over the transmission line at an end of each synchronization signal. When the predetermined voltage levels for the high bit, low bit and synchronization signals are different from each other, the method is implemented in an especially simple manner. The interfaces for the receiving and transmitting devices for performing the method are also described.

Abstract: Especially simple interfaces for outputting or receiving data are proposed, which can be operated by an especially simple method. It is provided that three different levels can be realized on the bus. One of these levels (V0) is used to generate a synchronization signal for the successive transmission of a high bit or a low bit. The individual bits are realized by means of the other two voltage levels (V2, V1). In a modification, via interfaces or connecting lines, items of information that are represented with the aid of two different levels are exchanged. In the process, by means of different pulse lengths, both synchronization pulses and two different information pulses are generated.