Patent ID: 8068181

Claim:
A method for using look ahead to detect 3:2 pulldown in a digital video data sequence to reduce visual artifacts during display, comprising: storing five sequential pairs of fields of digital video data in the digital video data sequence in a graphics memory, wherein each sequential pair of fields comprises an odd field and an even field; reading the five sequential pairs of fields of digital video data in the digital video data sequence from the graphics memory; measuring a field difference between the odd field and the even field for each sequential pair of the five sequential pairs of fields of digital video data in the digital video data sequence; computing a pulldown result based on the field difference for each sequential pair of the five sequential pairs; and selectively displaying the five sequential pairs of fields of digital video data in the digital video data sequence at least partially responsive to the pulldown result, wherein, for each sequential pair, only one of the odd field and the even field is displayed in response to a field difference threshold exceeding the field difference for the sequential pair, or both the odd field and the even field are displayed in response to the field difference threshold not exceeding the field difference for the sequential pair.