METHOD AND SYSTEM FOR ENSURING SECURE SCRAMBLING AND DE-SCRAMBLING AND THE DISTRIBUTION OF VECTORAL VISUAL SEQUENCES

摘要

The invention relates to a method for the secure distribtion of animated, vectoral synthetic visual sequences in at least two dimensions, consisting of a succession of frames containing at least one multidimensional geometric object which is to be displayed on the screen of a user and which are determined by at least one parameter (colour, scale, dimensions, point coordinates of the object). Prior to transmission to the equipment of a client, an analysis is made of the flow in order to generate a modified principal flow having an identical format to the format of the original flow but which contains at least one frame which is modified, and additional information of any particular format, comprising digital informatio enabling the reconstruction of said modified frames, said modified principal flow and additional information thus generated by the server being transmitted separately to the intended equipment. A synthesis of the flow in the original format is then calculated according to the modified principal flow and the additional information.