Patent ID: 7702103
Filing Date: 2010-04-20
Classification: H04N

Abstract:
1. A process for distributing video sequences according to a nominal flux format comprising a succession of images, where each image comprises a succession of blocks, among which at least one of the blocks in one of the images is calculated by motion prediction relative to at least one reference image, where the motion prediction is encoded in a nominal flux with a plurality of motion vectors, the process comprising: the nominal flux is processed, before transmission to client equipment, with an analysis by generating a first modified flux having the same format as the nominal flux and having images modified by substitution of selected data with randomly selected values from valid values which do not violate constraints imposed on the selected data by the nominal flux format, wherein the substitution comprises substituting at least one of the motion vectors, and a second flux of any format comprising the substituted data and other digital helper information to reconstruct the first modified flux, the first modified flux and the second flux are then transmitted separately, in real or deferred time, from a server toward the client equipment, and determining a synthesis of the nominal flux, which is calculated on the client equipment as a function of the first modified and second fluxes.