Patent ID: 7643478

Claim:
A process for secure distribution of digital audiovisual streams according to a standard, normalized or proprietary format comprising: separating an original encoded audiovisual stream into two parts; transmitting the parts to addressee equipment; generating a modified main stream having a format of the original encoded audiovisual stream and complementary information with any format comprising digital information suitable to permit reconstruction of the original encoded audiovisual stream by deleting and replacing, directly on a compressed bitstream, domain information segments of the original encoded audiovisual stream, wherein the complementary information comprises the replaced information segments of the original encoded audiovisual stream; and transmitting via separate paths: the modified main stream in a broadcasting mode; and the complementary information in an extended, secure multicasting mode to the addressee equipment from a secure central server passing via at least one router and at least one switch connecting the addressee equipment to the central server via at least one access point, wherein the secure multicasting mode enables in-band transmission of information relative to digital rights management.