Method and system for the secured distribution of audiovisual data by transaction marking
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United States of America Patent
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May 14, 2013
Grant Date -
May 27, 2010
app pub date -
Dec 5, 2007
filing date -
Dec 5, 2006
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Abstract
The application relates to a method for distributing a marked audiovisual sequence from a nominal audiovisual sequence, said nominal audiovisual sequence having a nominal content, wherein
- a first modified flow having a modified content different from the nominal content is generated, anda second marked complementary flow including marked complementary digital information is generated;said first modified flow and said marked complementary information are transmitted, so as to allow the restoration of said marked audiovisual sequence at the receiving item of equipment;an operation of marking said nominal audiovisual sequence is carried out, so as to determine a marked audiovisual sequence having a marked content;a difference is determined between said marked content, on the one hand, and said modified content or said nominal content, on the other hand;wherein said marked complementary digital information depend on said difference.
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