Patent ID: 7423691

Claim:
A method of converting an interlace scan video image to a progressive scan video image, comprising the steps of: (a) determining whether a target picture element (pixel) position of an interpolated row of pixels lies on an edge between visually distinct regions; (b) determining a degree of movement in the region of the target pixel position between a previously displayed image and the interlace scan image; (c) generating a plurality of potential values for an interpolated pixel at the target pixel position, including generating an intra-field interpolation value and a non-linear inter-field interpolation value; (d) selecting the intra-field interpolation value and the non-linear inter-field interpolation value from the plurality of potential values responsive to the determination of whether said target pixel position lies on an edge and the determined degree of movement in the region of the target pixel position; (e) filtering the interpolated pixel value to reduce errors in the interpolated pixel resulting from electrical noise in the interlace scan video image; and (f) blending the intra-field interpolation value and the non-linear inter-field interpolation value according to the degree of movement determined in step (b) to generate the value for the interpolated pixel.