TRANSMISSION DATA SHAPING DEVICE

PROBLEM TO BE SOLVED: To reproduce accurately transmission data even when a large noise component is included by providing a so-called hysteresis characteristic to digital data outputted sequentially from an average means. SOLUTION: A sampling means 2 samples binarized data 'b' outputted sequentially from a comparator means 1 based on a sampling clock 'c' and provides an output of digital data 'd'. An averaging means 3 averages sequentially the digital data 'd' of a prescribed number outputted sequentially from the sampling means 2 based on the sampling clock 'c' to provide an output of digital data 'e'. Then a comparator means 4 compares the digital data 'e' sequentially outputted from the average means 3, that is, a sum 'S' with a reference values A,B (A>B) based on the sampling clock 'c' to provide an output of digital data 'f' shaped from the digital data 'e' by using a hysteresis characteristic.