Patent Number: 7,612,829

Title: 2:2 and 3:2 pull-down detection techniques

Abstract: Improved 2:2 and 3:2 pull-down detection techniques are presented. These techniques can, for example, be used when converting an interlaced video signal into a progressive video signal. The improved techniques are less susceptible to bad edits. In one embodiment, comparison values are generated using consecutive fields of the interlaced video signal having the same parity, with a sequence of one small comparison value followed four large comparison values, where the four large comparison values include two pairs of similar large comparison values, is used to indicate a 3:2 pull-down.

Inventors: Chow; Wing-Chi (Toronto, CA)

Assignee: Zoran Corporation

International Classification: H04N 7/01 (20060101); H04N 11/20 (20060101)

Expiration Date: 1/03/02017