Patent Document ID: 8023041
Application ID: 11343119
Patent Status: 1

Claim One:
1. A method for detecting moving interlaced text in a video sequence originating through telecine, comprising the steps of: (A) checking a motion condition of a current block in a current field in said video sequence to detect motion both (i) from a previous field in said video sequence to said current field and (ii) from said current field to a next field in said video sequence; (B) checking an artifact condition of said current block by calculating (i) a first difference between said current block and a next block in said next field, (ii) a first activity between said current block to said next block, (iii) a second difference between a previous block in said previous field and said current block and (iv) a second activity between said previous block to said current block, wherein said artifact condition is true if said first difference is greater than said first activity and said second difference is greater than said second activity; (C) asserting a block motion indicator to designate that said current block contains said moving interlaced text if all of (i) said motion condition is true and (ii) said artifact condition is true; and (D) deinterlacing said current block in response to said block motion indicator.