Patent application number | Description | Published |
20080263611 | VIDEO INTERFACING AND DISTRIBUTION SYSTEM AND METHOD FOR DELIVERING VIDEO PROGRAMS - A method of transmitting video programs or sequences containing reference images as I-frames including sending the video programs or the sequences to a user as divided into two parts: a first part corresponding to an original video program in which some or all of the I-frames are substituted, and a second part corresponding to the substituted I-frames and to information allowing reconstruction of the original video program from the first part. | 10-23-2008 |
20090070886 | METHOD FOR SECURELY DELIVERING AUDIOVISUAL SEQUENCES, DECODER AND SYSTEM THEREFOR - A method for delivering a nominal audiovisual stream including nominal coefficients to a receiving site including a secure gateway includes modifying, in the nominal audiovisual stream, at least one nominal coefficient among the nominal coefficients to generate a main digital stream; generating complementary information so that the nominal audiovisual stream is implemented from the complementary information and main digital stream at the receiving site; performing cryptographic operations on the secure gateway with the complementary information; and causing the gateway to transmit the complementary information to an audiovisual processing peripheral to enable the nominal audiovisual stream to be implemented at the audiovisual processing peripheral. | 03-12-2009 |
20090327692 | METHOD AND DEVICE FOR DISTRIBUTING SECURE DIGITAL AUDIOVISUAL CONTENTS BY INTEROPERABLE SOLUTIONS - A method for distributing a nominal audiovisual stream to a recipient device including modifying, in the nominal audiovisual stream, at least one nominal coefficient among the nominal coefficients to generate a modified main stream; generating complementary information such that the nominal audio-visual stream may be implemented based from the complementary information and on the modified main stream, applying a plurality of methods for protecting the complementary information to generate multiple protected complementary information, each of the protected complementary information enabling the nominal stream of the main stream to be implemented upon application of an access method compatible with the protection method which has been used to protect it; and transmitting to the recipient device the modified main stream and the multiple protected complementary information. | 12-31-2009 |
20100011393 | DISTRIBUTED AND SECURED METHOD AND SYSTEM FOR PROTECTING AND DISTRIBUTING AUDIO-VISUAL FLOWS - A process for secure distribution of digital audiovisual 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 the original stream and complementary information of any format including digital information suitable to permit reconstruction of the original stream, wherein a transmission is made, by separate paths during distribution of the modified main stream from a distribution server and of the complementary information to the equipment of the addressee from a secure central server passing via at least one local server connecting the equipment of the addressee to the local server via at least one access point. | 01-14-2010 |
20100017498 | PROCESS AND DEVICE FOR SECURING THE TRANSMISSION, RECORDING AND VIEWING OF DIGITAL AUDIOVISUAL PACKETIZED STREAMS - 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. | 01-21-2010 |
20100040228 | PERSONALIZED MARKING FOR PROTECTING DIGITAL AUDIOVISUAL STREAMS - A process for distributing a video stream to a multitude of destinations including marking by adding to the video stream at least a visual element such that the marking is applied to an original video stream common to selected recipients, and personalized for a least portion of the recipients by addition of a visual element specific to destination equipment. | 02-18-2010 |
20100076773 | SECURE AUDIO STREAM SCRAMBLE SYSTEM - A process for distributing digital audio sequences according to a nominal flux format including a succession of fields, each of which includes at least one digital block clusterizing a selected number of coefficients corresponding to single audio elements that are digitally coded inside the flux and utilized by audio decoders that are able to play it to be able to decode it correctly, including a preparatory step including modifying at least one of the coefficients, and a transmission step including a primary flux in compliance with a nominal format including blocks that were modified during the preparatory step and by a route separated from the primary flux by an additional piece of digital information which allows reconstruction of the original flux starting with a calculation, on recipient equipment, as a function of the primary flux and of the additional information. | 03-25-2010 |
20100142621 | SCRAMBLING, DESCRAMBLING AND SECURED DISTRIBUTION OF AUDIO-VISUAL SEQUENCES FROM VIDEO CODERS BASED ON WAVELETS PROCESSING - A process for secured distribution of video sequences according to a digital stream format stemming from an encoding based on a processing by wavelets including frames including blocks containing coefficients of wavelets describing the visual elements, including analyzing the stream prior to transmission to client equipment to generate a modified main stream by deletion and replacement of selected information coding the original stream and having the format of the original stream, and complementary information of any format comprising the digital information coding the original stream and suitable for permitting reconstruction of the modified frames; and transmitting the modified main stream and the complementary information separately from a server to addressed equipment. | 06-10-2010 |
20110119699 | PROCESS AND SYSTEM FOR THE SECURE BROADCASTING OF PROTECTED AUDIOVISUAL STREAMS TO A DYNAMIC GROUP OF RECEIVERS - A process for the distribution of digital audiovisual sequences. An analysis is made prior to transmission to a dynamic group of receivers to generate a first modified main stream and complementary information. A synthesis of a stream in the original format is calculated on the receiver as a function of the modified main stream and the complementary information. Generation of the complementary information is constituted of the following steps: extraction of at least one original piece of data of the original stream, storage of the original data in the complementary information, formatting the complementary information in segments with each segment corresponding to at least one entire audiovisual element of the modified main stream, and encapsulation of at least one segment with at least one piece of access information in at least one data block to generate at least one access ticket for the corresponding audiovisual elements. | 05-19-2011 |
20120201384 | ADAPTIVE AND PROGRESSIVE AUDIO STREAM SCRAMBLING - A process for distributing digital audio sequences according to a nominal stream format that include a succession of frames, each of which includes at least one digital audio block grouping a plurality of coefficients corresponding to digitally coded audio elements, including modifying at least one block of an original stream of sequences, in an adaptive manner on the original stream as a function of at least a part of characteristics representative of the structure, content and parameters of the original stream, a target profile and external events. | 08-09-2012 |
20120291061 | PROCESS AND SYSTEM FOR THE SECURE BROADCASTING OF PROTECTED AUDIOVISUAL STREAMS TO A DYNAMIC GROUP OF RECEIVERS - Embodiments of the invention may relate to the distribution of digital audiovisual sequences. The distribution of such sequences may involve generating and transmitting modified sequences and complementary information. The complementary information may allow reconstruction of the original sequences from the modified sequences. | 11-15-2012 |
20130036436 | PROCESS AND DEVICE FOR THE PROTECTION AND DISPLAY OF VIDEO STREAMS - A process distributing video streams to a plurality of addressees, comprising a marking step comprising adding at least one visual element to a video stream, which marking step is applied to an original video stream common to all the addressees and which is personalized for each addressee by addition of a visual element specific to the addressee that allows rapid visual identification of the addressee, wherein the added visual element replaces part of the original video stream that is stored in complementary information on a multimedia server. | 02-07-2013 |
20130121670 | DEVICE FOR SECURE TRANSMISSION RECORDING AND VISUALIZATION OF AUDIOVISUAL PROGRAMS - Methods and systems are disclosed for distributing video sequences in a coded stream. The methods and systems include analyzing an original coded stream, generating at least one modified coded sub-frame, generating, based upon the analysis, a modified stream and a second stream by replacing an original coded sub-frame by the modified coded sub-frame, so that the modification from the original coded sub-frame results in a visually altered video sequence, transmitting the first and the second generated streams, and reconstructing the original stream using the modified coded sub-frame contained in the second stream. | 05-16-2013 |
20140189728 | SYSTEM AND METHOD OF ADAPTIVE AND PROGRESSIVE DESCRAMBLING OF DIGITAL IMAGE CONTENT - A method for distributing a digital image content, including a modification stage of an original digital image content by modifying at least a part of digital image data, the modification producing a modified digital image content of the same nominal format as the original digital image content, transmitting the modified digital image content, and a reconstruction stage implemented within a decoder for obtaining a reconstituted digital image content, wherein the reconstruction is adaptive and progressive as a function of information coming from a digital profile of the recipient. | 07-03-2014 |