Patent ID: 7558353

Claim:
A method used in a receiver of a broadcasting system when suppresses impulse noise, wherein a sample stream x[n] is received, detecting and suppressing interruption of impulse noise to the sample stream x[n] are performed, wherein the sample stream x[n] includes a plurality of samples and n represents a discrete-time independent variable, the method comprising: comparing by using a first comparator energy sum of a (k−1) th sample and a k th sample multiplied by a first constant with a first threshold, wherein k is a positive integer; comparing by using a second comparator energy sum of the k th sample and a (k+1) th sample multiplied by a second constant with a second threshold while the energy sum of the (k−1) th sample and the k th sample multiplied by the first constant being greater than the first threshold; and replacing the k th sample with a first replacement sample while the energy sum of the k th sample and the (k+1) th sample multiplied by the second constant being greater than the second threshold.