Patent ID: 8300958

Claim:
A system for detecting scrolling text in a mixed-mode video sequence, the system comprising: a deinterlacer configured to: receive a mixed mode video sequence including 3:2 pulldown film and scrolling text mixed with the 3:2 pulldown film, the 3:2 pulldown film having alternating groups of three fields and two fields, and deinterlace the three fields and the two fields to create a progressive-scan mixed-mode video sequence; and a scrolling text detector including: a motion estimator configured to generate a plurality of motion vectors between blocks of two or more extracted frames of the progressive-scan mixed-mode video sequence, an extracted frame motion analyzer configured to analyze the motion vectors to detect a rate of movement of the blocks between the two or more extracted frames with a temporal distance between the extracted frames, indicative of the presence of scrolling text in the progressive-scan mixed-mode video sequence, and a consecutive frame motion analyzer configured to calculate differences in pixel values between blocks of two or more consecutive frames in the progressive-scan mixed-mode video sequence, indicative of the presence of scrolling text in the progressive-scan mixed-mode video sequence for displaying the scrolling text and the progressive-scan mixed-mode video sequence on a display.