Patent ID: 7853968

Claim:
A method for processing a video signal, comprising the steps of: (A) receiving said video signal comprising (i) a first segment having a series of frames, wherein (a) each of said frames of said first segment has a first region and a second region, and (b) said first region and said second region of said first segment define a first signature for each of said frames of said first segment and (ii) a second segment having a series of frames, wherein (a) each of said frames of said second segment has a first region and a second region, and (b) said first region and said second region of said second segment define a second signature for each of said frames of said second segment; (B) sequentially modifying all of said first signatures of all said frames of said first segment to a third signature, wherein said first segment comprises a non-commercial program; and (C) sequentially modifying all of said second signatures of all said frames of said second segment to a fourth signature.