METHOD OF SECURE INFORMATION TRANSMISSION WITH CODE DIVISION IN VIDEO DATA Russian patent published in 2017 - IPC H04L9/00 

FIELD: physics, communication.

SUBSTANCE: invention is intended for the secure information exchange in the video data structure between two or more subscribers. To provide this, preprocessing the embedded data, including the modulation by mutually orthogonal signals of Franc-Krestensen providing code division for different subscriber pairs; conducting the image-container compression operations by JPEG standard (MPEG-2 for moving images), and the representation of the obtained quantized coefficients of discrete cosine transformation (DCT) in a binary form; embedding the data of hidden transmitted messages by means of replacing a pair of bit of DCT coefficients of the image container, and the use of correlation processing method of hidden messages for their retrieval.

EFFECT: invention enhances the efficiency of the video transmission system and increases the number of the secure information exchange subscribers.

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