CREATING WATERMARKS IN CODED INFORMATION CONTENT Russian patent published in 2011 - IPC H04N7/08 G06T1/00 H04L9/00 

FIELD: information technology.

SUBSTANCE: coded information content is received, at least one pre-processed set of watermarks is received and a certain number of bits is directly replaced with an alternative value, starting with a certain position in the coded information content. Said alternative value contains embedded watermark signals, wherein said alternative value is selected from a plurality of alternative values determined by at least one of said set of watermarks. The invention also describes a device and a method of creating a set of watermarks, which involves selecting positions, where the value in the coded information content must be replaced by an alternative value, and calculating a plurality of alternative values for each selected position.

EFFECT: creating watermarks in coded information content by embedding watermarks into selected positions in the coded information content without deterioration of quality.

18 cl, 4 dwg