Process for correcting signal distortions

Abstract

A method for correcting signal distortions in frequency-modulated data signals is described. A rectangular binary signal is derived from a faulty demodulated signal, and, using a corrected demodulated signal and the rectangular binary signal, a correction signal is formed. A differential signal is formed from the corrected demodulated signal; the differential signal has zero transitions which coincide with the extreme values of the corrected demodulated signal. A difference signal is formed from the corrected demodulated signal and from the rectangular binary signal. The amplitudes of the difference signal in the time intervals coinciding with the zero transitions of the differentiated signal are equal to the amplitude difference between the rectangular binary signal and the corrected demodulated signal. The correcting signal is obtained from those signal components of the difference signal which occur during the aforementioned time intervals.

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