Patent ID: 6738097
Filing Date: 2004-05-18
Classification: H04N

Abstract:
A decoder for compositive video signals for separating a luminance signal and a color signal from a continuous composite signals having horizontal scanning intervals, comprising:a correlation judging section used to judge a presence or absence of line correlation among a plurality of signal lines including a signal line to be separated during each of the horizontal scanning intervals of said composite signal; a color component judging section used to judge whether a color component is contained in said composite signal; a filter section having a first filter used to sequentially extract a color component signal contained in said composite signal of said signal line to be separated, based on a relation of said composite signal between said signal line to be separated and another signal line being adjacent to said signal line to be separated, and a second filter used to sequentially extract a color component signal contained in said composite signal of said signal line to be separated; and a selecting section used to output a selecting signal to select either of said two filters depending on judgement results from said correlation judging section and from said color component judging section to said filter section.