Patent ID: 7580077

Claim:
A method for converting an interlaced video signal to a progressive scan video signal, the method comprising the steps of: deriving, for each pixel in each missing line of a video field in the interlaced video signal to be converted, correlation data, using a correlator unit, for each of a set of possible interpolations between adjacent pixels to be used in reconstructing the pixel in the missing line; deriving a confidence measure using a confidence evaluation unit from the correlation data; selecting adjustment data using an adjustment curve selector for the correlation data in dependence on the confidence measure; adjusting the correlation data with the adjustment data, using a resultant data generator; determining, using a resultant data analysis unit, from the adjusted correlation data an interpolation scheme that is most likely to accurately produce the pixel in the missing line; and interpolating, by an interpolator, the pixel in the missing line using the interpolation scheme selected by an interpolation scheme selector, wherein the step of selecting the adjustment data selects data which will cause greater adjustment of the correlation data as the confidence measure decreases.