Patent ID: 8625025

Claim:
A flexible video cadence detecting apparatus, comprising: a motion detecting unit, receiving a plurality of continuous field images and determining whether or not there is motion in each of the field images, wherein the motion detecting unit assigns a first value when there is no motion in the field image and assigns a second value when there is motion in the field image, so as to obtain a value stream; a cycle detecting unit, at a first stage, receiving the value stream and detecting whether or not the first value or the second value has a cycle only from one of a group of candidate cycles, so as to output a cycle determinant; a film detecting unit, at a second stage after the first stage, for receiving the value stream and the cycle determinant and determining whether or not the field images are in a film format, so as to output a cadence pattern, wherein one only from a group of a plurality of candidate cadence patterns corresponding to the cycle determinant is determined as the cadence pattern; and a de-interlacing unit, for restoring the field images into an original film according to the cadence pattern output by the film detecting unit.