Patent ID: 7760825

Claim:
A device for suppressing pulse interferences contained in a signal, comprising: a circuit for detecting pulse interferences contained in the signal, wherein the detection circuit comprises: a circuit for determining a first coefficient representative of a statistical feature of the variation of the signal over a first time period, wherein the circuit for determining the first coefficient determines the first coefficient based on absolute values of the digital values obtained by sampling of the signal during the first time period, and provides the sum of the absolute values of the digital values obtained by sampling of the signal during the first time period, each absolute value of a digital value greater than a threshold being replaced with a weighting constant greater than or equal to the threshold; a circuit for determining a second coefficient representative of a statistical feature of the variation of the signal over a second time period longer than the first time period, wherein the circuit for determining the second coefficient determines the second coefficient based on the absolute values of the digital values obtained by sampling of the signal during the second time period; and a comparison circuit comparing the first coefficient to the second coefficient and providing a signal indicative of the presence of a pulse interference over the first time period when the first coefficient clearly differs from the second coefficient; and a correction circuit for correcting the signal disturbed by the detected pulse interference.