Secured distributed method and system for the distribution of audiovisual flows
First Claim
1. A process for secure distribution of digital audiovisual streams according to a standard, normalized or proprietary format, comprising:
- separating an original stream to generate a modified stream having a format corresponding to a format of the original stream and complementary information comprising digital information suitable to enable reconstructing the original stream;
transmitting to equipment of an addressee, using separate transmission paths, the modified stream from a distribution server and the complementary information from a secure central server, the transmission path for the complementary information including at least one intermediate server connecting the equipment of the addressee to the central server, wherein the complementary information is defined according to a nominal structured format containing processing units that include logical entities with a modulatable size, and wherein the respective processing units include load information containing data and references about the modified stream, wherein the distribution server and the secure central server are distinct from one another.
3 Assignments
0 Petitions
Accused Products
Abstract
A process for secure distribution of digital audio streams according to a standard, normalized or proprietary format, on which streams a separation of the stream into two parts is made prior to transmission to equipment of an addressee to generate a modified main stream having a format of an original stream and complementary information including digital information suitable for permitting reconstruction of the original stream including: transmitting, by separate paths during a distribution phase, the modified main stream from a distribution server and the complementary information to the equipment of the addressee from a secure central server passing via at least one intermediate server connecting the equipment of the addressee to the central server, wherein the complementary information is defined according to a nominal structured format containing processing units which comprise logical entities with a modulatable size and wherein each of the processing units is prefixed by a heading containing information relative to the processing unit and a useful load containing data and references about the modified main stream, and packetizing the units prior to the transmission.
12 Citations
18 Claims
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1. A process for secure distribution of digital audiovisual streams according to a standard, normalized or proprietary format, comprising:
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separating an original stream to generate a modified stream having a format corresponding to a format of the original stream and complementary information comprising digital information suitable to enable reconstructing the original stream; transmitting to equipment of an addressee, using separate transmission paths, the modified stream from a distribution server and the complementary information from a secure central server, the transmission path for the complementary information including at least one intermediate server connecting the equipment of the addressee to the central server, wherein the complementary information is defined according to a nominal structured format containing processing units that include logical entities with a modulatable size, and wherein the respective processing units include load information containing data and references about the modified stream, wherein the distribution server and the secure central server are distinct from one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system to distribute audiovisual streams, comprising;
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a device configured to separate an original video stream into a modified stream and into complementary information, wherein said modified stream has a format corresponding to a format of the original video stream, and wherein the complementary information includes digital information suitable for permitting reconstruction of the original video stream, and wherein the complementary information is defined according to a nominal structured format containing processing units that comprise logical entities with a modulatable size, and wherein the processing units include respective load information containing data and references about the modified stream; at least one multimedia server configured to contain one or more protected audiovisual streams, wherein the one or more protected audiovisual streams include one or more modified streams produced by the device configured to separate an original video stream; at least one secure central server, including a device for securing and personalizing the complementary information, and configured to distribute the complementary information to at least one addressee via a transmission path that includes at least one intermediate server. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus for receiving a modified stream and complementary information corresponding to an original audiovisual stream, the apparatus comprising:
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at least one device configured to decrypt a session key associated with communication of the complementary information associated with the original audiovisual stream, wherein the device includes at least one smart card; at least one device configured to decrypt the complementary information, using the decrypted session key; and at least one module configured to reconstruct the original audiovisual stream as a function of the modified stream and the complementary information, wherein the modified stream and the complementary information are derived from the original audiovisual stream by separating the original audiovisual stream into the modified stream and the complementary information, wherein the modified stream has a format corresponding to a format of the original audiovisual stream, and wherein the complementary information includes digital information suitable for permitting reconstruction of the original audiovisual stream, and wherein the complementary information is defined according to a nominal structured format containing processing units that comprise logical entities with a modulatable size, and wherein the processing units include respective load information containing data and references about the modified stream. - View Dependent Claims (17, 18)
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Specification