Patent ID: 8264603

Claim:
A 2:2 film-mode detecting method, comprising: receiving a video signal comprising a sequence of video fields; for each of the sequence of video fields, determining a state for the each video field based on a first moving-pixel count for the each video field with respect to a first previous same-parity video field for the each video field, a first combing-pixel count for the each video field with respect to a first immediately preceding video field for the each video field, a second moving-pixel count for the first immediately preceding video field with respect to a second previous same-parity video field for the first immediately preceding video field, and a second combing-pixel count for the first immediately preceding video field with respect to a second immediately preceding video field for the first immediately preceding video field; and identifying the video signal as a 2:2 film-mode if a first predetermined state transition has been repetitively detected in the sequence of video fields, wherein a state transition from a first state for one video field in the sequence of video fields to a second state for another video field in the sequence of video fields occurs when a condition involving one or more of a moving-pixel count and a combing-pixel count associated with the sequence of video fields is satisfied.