Patent ID: 6914638

Claim:
A method, comprising: converting a television broadcasting signal into a digitized video signal, including sampling the television broadcasting signal at an integer multiple of a frequency of a chrominance sub-carrier to generate digitized samples, and storing a number of the digitized samples in a storage medium; calculating a constancy value in a horizontal dimension (H constancy value), a vertical dimension (V constancy value) and a temporal dimension (T constancy value), calculating a constancy in the horizontal dimension including measuring an absolute value between two of the digitized samples on a same scan line that have same phases of the chrominance sub-carrier to establish the H constancy value; separating luminance information and chrominance information of the digitized video signal in a dimension that has a constancy value below a predetermined threshold level, the constancy value representing an amount of variation among discrete samples of the digitized video signal within the dimension, separating luminance information and chrominance information including selecting a horizontal filter to perform the separation if the H constancy value is less than the predetermined threshold level, the separation including adding or subtracting discrete samples of the digitized video signal on the same scan line that are 180° out-of-phase; and optionally converting the separated luminance information and chrominance information into a first output format, wherein the first output format conforms to input requirements of a display apparatus.