Patent ID: 6774954
Filing Date: 2004-08-10
Classification: H04N

Abstract:
A method for separating luminance (Y) and chrominance (C) of a composite TV digital signal, said method comprising the steps of:a) analyzing said composite signal to search for one of a plurality of pre-defined motions; b) in response to a pre-defined motion being detected, filtering the spectral energy of said detected pre-defined motion by a one-dimensional temporal comb filter selected from a filer bank; c) in response to no pre-defined motion being detected, analyzing said signal by searching for an edge in a three-dimensional sample space of said signal, wherein said sample space is spanned by a horizontal axis, a vertical axis and a temporal axis, and wherein said edge represents a motion encoded in said signal; d) in response to said edge being detected, selecting a filter of said filter bank in accordance with the orientation of said edge to filter the spectral energy of said motion; e) in response to no edge being detected, selecting a three-dimensional spatial-temporal comb filter of said filter bank.