A data transmission system with a reduced power consumption, a method and transmission circuit

摘要

The transmission circuit, withan encoder (400, 905), which is coupled to a data input,the encoder (400, 905) circuits, in order at the data input data words in the code words with a minimum number of the occurrence of a particular state, wherein the code word bits is longer than the data word,the encoder (400, 905) a weighting computer and a plurality of logic blocks (410, 411, 412, 413) comprises,the weighting computer (405) is coupled to the data input and circuits, a count value of the number of times that of the particular condition occurs in a data word, to determine and based on the count value to calculate a weighting bit, wherein, when the count value is greater than half the total number of bits in the data word is, the data word is inverted and the weighting bit is set on the specific state, and otherwise the weighting bits to the inverse of the certain state is set;wherein the plurality of logic blocks (410, 411, 412, 413) on the data input and the weighting computer (405), and wherein at each logic block to a first input of a single bit of the data word and a second input the weighting bits, which is calculated by the weighting computer, is coupled, wherein each logic block the first and second inputs, are combined one bit of the of a block of the code word, wherein the data word is inverted, if the weighting bit is set on the specific state, and wherein the code word the code block and the weighting of bits; anda transmitter (105, 910), which is coupled to the encoder, wherein the transmitter circuits, the code words in order to a transmission line (115, 915) to be fed,the transmission line (115, 915) asymmetrically over a termination with a high voltage potential is closed off, wherein the certain state on the transmission line (115, 915) is a low voltage potential.