Circuit applied to display apparatus and associated signal processing method

Abstract

A circuit applied to a display apparatus includes a first noise variance estimation circuit, an impulsive interference determination circuit, a second noise variance circuit and a selection circuit. The first noise variance estimation circuit calculates a first noise variance of an input signal. The impulsive interference determination circuit determines whether the input signal has impulsive interference according to the first noise variance to generate a detection result. The second noise variance estimation circuit calculates a second noise variance based on the input signal. The selection circuit selectively outputs one of the first noise variance and the second noise variance according to the detection result.

Dependencies are inferred from the claim text.