Pull-down detection apparatus and pull-down detection method

摘要

A pull-down detection apparatus includes a pixel comparator at least performing pixel comparison between a subsequent field and a present field and determining a presence of a pixel change between the subsequent field and the present field, a field comparator compiling a determination result in the pixel comparator and determining a presence of an image change between the subsequent field and the present field based on the determination result in the pixel comparator, and a pull-down determinater determining if the input video signal is a pull-down signal based on a determination result in the field comparator. The pull-down determinater changes a condition for determining a difference in pixel in the pixel comparator and/or a condition for determining a change in image in the field comparator based on a history of determination if the input video signal is a pull-down signal.