The reconstitution of LCD compromising emanations based on wavelet denoising

Abstract

Digital electronic equipment will emit unintentional electromagnetic signals in working state includes LCD. The distinct reconstitution image of LCD compromising emanations contributes directly to evaluate leakage risk. This study attempts to promote the reconstitution quality of LCD compromising emanations based on wavelet denoising method. The algorithm of setting the wavelet decomposition level and the threshold has been developed to realize the reconstruction of LCD display images automatically and accurately.