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 comprising audio, video components or other data, comprising:
- packetizing the original stream into packets that can be manipulated and have a flexible size, wherein each packet comprises a header containing information about the packet and a useful load comprising 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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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
14 Claims
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1. A process for secure distribution of original digital audiovisual streams comprising audio, video components or other data, comprising:
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packetizing the original stream into packets that can be manipulated and have a flexible size, wherein each packet comprises a header containing information about the packet and a useful load comprising 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for the transmission of an audiovisual stream comprising apparatus comprising at least one multimedia server containing original audiovisual sequences and a device that analyzes the audiovisual stream from the server to generate the modified main stream and the complementary information, at least one piece of equipment for exploiting an audiovisual stream comprising a standard reader of packetized streams, at least one recording interface that stores the contents of the modified main stream, at least one decoder element that processes the packetized format and at least one interface that displays and listens, and means for recomposition of the original stream from the modified main stream and the complementary information, and at least one communication network between the production equipment and the piece(s) of exploitation equipment.
Specification