Patent ID: 8861589

Claim:
A method of identifying a pull-down field in a 3:2 pull-down video stream, comprising: generating one or more temporally sequential variances using said 3:2 pull-down video stream; correlating said one or more temporally sequential variances to one or more temporal variance patterns associated with said 3:2 pull-down video stream, each of said one or more temporal variance patterns associated with one or more unique field phases; generating one or more correlation coefficients associated with each of said one or more temporal variance patterns; assessing whether said one or more correlation coefficients exceeds a first threshold value; incrementing one or more counters associated with said one or more correlation coefficients if said one or more correlation coefficients exceeds said first threshold value; assessing whether said one or more correlation coefficients is less than a second threshold value; decrementing said one or more counters associated with said one or more correlation coefficients if said one or more correlation coefficients is less than said second threshold value; determining if a counter of said one or more counters exceeds a third threshold; selecting said one or more unique field phases as a repeat field phase if said counter exceeds said third threshold; and identifying said pull-down field associated with said repeat field phase.