Secure and personalized broadcasting of audiovisual streams by a hybrid unicast/multicast system
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United States of America Patent
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Jan 5, 2010
Grant Date -
Feb 7, 2008
app pub date -
Nov 24, 2004
filing date -
Nov 24, 2003
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Abstract
A process for secure distribution of digital audiovisual streams according to a standard, normalized or proprietary format including separating an original stream into two parts, transmitting the parts to addressee equipment, generating a modified main stream having a format of the original stream and complementary information with any format including digital information suitable to permit reconstruction of the original stream, and transmitting the modified stream from a distribution server via separate paths during distribution 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.
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