Method and configuration for transmitting data in a motor vehicle

DETAILED DESCRIPTION It is accordingly an object of the invention to provide a method and a configuration for digitally transmitting data in a motor vehicle that overcome the above-mentioned disadvantages of the prior art methods and devices of this general type.
With the foregoing and other objects in view there is provided, in accordance with the invention, a method for transmitting data in a motor vehicle having a transmitter and a receiver.
The method includes splitting a signal that is to be transmitted, into a constant part and a variable part, and combining a partial value of the constant part with the variable part and transmitting a result signal to the receiver.
The advantage of the invention is that existing transmission systems can continue to be used and nevertheless a higher resolution can be obtained at least for a composite signal.
The method according to the invention extracts a constant part and a variable part from the data signal that is determined.
The values that are extracted in this way are transmitted over the transmission link that is present.
Depending on the bandwidth of the composite signal, various methods can be applied for transmitting relatively low bandwidth signals with a possibly higher resolution.
In a first embodiment, the constant part is, for example, divided by a predefined value N and only this fraction is transmitted.
The constant part can be reconstructed by N-fold transmission of the fraction.
In one development errors that arise as a result of the division are compensated in that the error is minimized by a control loop.
This embodiment can be used in both analog and digital systems.
In a second embodiment, a digitized value of the constant part is transmitted bit by bit.
According to the invention, just a single bit is transmitted per transmitted data word, and the rest of the data word can be used for the variable value.
In accordance with an added mode of the invention, there are the steps of dividing the constant part by a predefinable value N resulting in N divided values, and summing each of the divided values with the variable part forming the result signal to be transmitted