Patent ID: 7751484

Claim:
A method for composite noise filtering, comprising the steps of: (A) generating a selection value using a circuit in response to a stationary check identifying one of a plurality of blendings for a current item of a current field of an input signal generated as composite video; (B) generating a filtered item in response to one of (i) a first of said blendings between said current item and a first previous item co-located in a first previous field having an opposite phase of composite artifacts from said current field and (ii) a second of said blendings between said current item and a first motion compensated item from said first previous field; (C) switching between said first blending and said second blending in response to said selection value; and (D) generating an output signal having said current field with said current item replaced by said filtered item, wherein (i) said stationary check comprises the step of generating said selection value in response to a motion field analysis in a local neighborhood of said current item, (ii) said motion field analysis comprises the steps of (a) comparing at least one motion vector proximate said current item with a plurality of predetermined signatures, (b) determining if a first total number of said motion vectors matching said predetermined signatures is greater than a first threshold and (c) for each respective one of said predetermined signatures, determining if a second total number of said motion vectors matching said respective one predetermined signature is less than a second threshold and (iii) at least two of said second thresholds are different.