Process and device for securing the transmission, recording and viewing of digital, audiovisual packetized streams
First Claim
1. A process for secure distribution of original digital audiovisual streams including audio, video components or other data, comprising:
- packetizing an original audiovisual stream into packets that can be manipulated and have a flexible size, wherein the packets include respective headers containing information about the respective packets and contain respective load information,analyzing the packetized stream prior to transmission to client equipment to generate a main stream in conformity with a packetized format of the original audiovisual stream, modified in that all or part of the packets of the main stream correspond to substitute packets of the same structure as respective packets, but having modified content with respect to the respective packets, andgenerating complementary information with any format suitable to permit reconstruction of the original stream, wherein the complementary information includes instructions describing actions to be performed on the packets of the main stream, andseparately transmitting the main stream and complementary information generated from the server to the client equipment to securely distribute the original audiovisual stream.
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Accused Products
Abstract
A process for secure distribution of original digital audiovisual streams including audio, video components or other data, including packetizing the original stream into packets that can be manipulated and have a flexible size, wherein each packet includes a header containing information about the packet and a useful load including part of the data of the stream, analyzing the packetized stream prior to transmission to client equipment to generate a main stream in conformity with a packetized format of the original stream, modified in that all or part of the packets were substituted by packets of the same structure, but whose content was modified, and generating complementary information with any format suitable to permit reconstruction of the original stream, and separately transmitting the modified main stream and complementary information generated from the server to addressed equipment.
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Citations
24 Claims
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1. A process for secure distribution of original digital audiovisual streams including audio, video components or other data, comprising:
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packetizing an original audiovisual stream into packets that can be manipulated and have a flexible size, wherein the packets include respective headers containing information about the respective packets and contain respective load information, analyzing the packetized stream prior to transmission to client equipment to generate a main stream in conformity with a packetized format of the original audiovisual stream, modified in that all or part of the packets of the main stream correspond to substitute packets of the same structure as respective packets, but having modified content with respect to the respective packets, and generating complementary information with any format suitable to permit reconstruction of the original stream, wherein the complementary information includes instructions describing actions to be performed on the packets of the main stream, and separately transmitting the main stream and complementary information generated from the server to the client equipment to securely distribute the original audiovisual stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 19, 22)
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14. A system for securely transmitting an audiovisual stream, comprising apparatus including:
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at least one multimedia server configured to contain original audiovisual sequences and a device configured to analyze an audiovisual stream including one or more audiovisual sequences from the at least one multimedia server and to generate a main stream and complementary information, wherein the complementary information includes instructions describing actions to be performed on packets of the main stream, and at least one piece of equipment configured to exploit the main stream and complementary information, the equipment including a standard reader of packetized streams, at least one recording interface configured to store the contents of the main stream, at least one decoder element configured to process a packetized format, at least one interface configured to present output, and means for recomposition of the audiovisual stream from the main stream and the complementary information, wherein the complementary information is received separately from the main stream to maintain secure distribution of the audiovisual stream to the at least one piece of equipment. - View Dependent Claims (17, 20, 21, 23, 24)
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Specification