Method and system for secure distribution of audiovisual data encapsulated according to a plurality of transport protocols
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United States of America Patent
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Apr 24, 2012
Grant Date -
Apr 15, 2010
app pub date -
Oct 14, 2008
filing date -
Oct 14, 2008
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Abstract
Methods and systems for secure distribution of an original audiovisual stream constituted of a set of transport packets encapsulated according to a plurality of transport protocols suitable to be transmitted to a receiving device compatible with one of the said transport protocols include the steps of:
- generating a protected audiovisual stream from the original stream by modifying at least one of the original transport packets, and a complementary stream including digital information suitable from the protected stream,reconstituting on the receiving device the original audiovisual stream from the protected stream as function of the complementary stream,wherein the protected audiovisual stream includes a set of modified transport packets that are different from the corresponding original transport packets at modification positions, and the modification positions are in the complementary stream, the modification positions being generated according to each transport protocol of the plurality of transport protocols of the original stream.
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