Patent ID: 8253855
Filing Date: 2012-08-28
Classification: H04N

Abstract:
1. A method of automatic luminance-chrominance delay compensation, comprising the steps of: (A) generating an intermediate signal by processing a video signal such as to enhance a plurality of edges in a picture within said video signal, said picture having a luminance component and a chrominance component temporally separated from each other by an actual delay; (B) identifying an estimated delay between said luminance component and said chrominance component by correlating said luminance component in said intermediate signal to said chrominance component in said intermediate signal at a plurality of relative delays, wherein said estimated delay is determined using a plurality of correlation scores calculated between said luminance component and said chrominance component, each one of said correlation scores calculated at each respective one of said relative delays; and (C) compensating for said actual delay by delaying one of either (i) said luminance component and (ii) said chrominance component by said estimated delay; and (D) calculating a plurality of correlation scores between said luminance component and said chrominance component, one of said correlation scores at each respective one of said relative delays.