Patents Assigned to Nagravision S.A.
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Publication number: 20210136438Abstract: A method to transfer a video stream from a host device comprising a controller configured for bulk transfers to a descrambling device, comprises: forming a chain out transfer comprising a chain out header linked with multiple chain out descriptors, the first chain out descriptor pointing to an out description packet containing at least one producer ID, the second and subsequent chain out descriptor pointing to chunks from the video stream, the last chain out descriptor being configured to generate an interrupt; forming a chain in transfer comprising a chain in header linked with a plurality of chain in descriptors, each chain in descriptor pointing to a descrambled chunk; requesting the controller to process the chain; receiving the description packet by the descrambling device and using key data associated with the chunks to descramble them; receiving by the controller the descrambled chunks and triggering an interrupt on the last chunk.Type: ApplicationFiled: January 15, 2021Publication date: May 6, 2021Applicant: NAGRAVISION S.A.Inventor: Fabien GREMAUD
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Patent number: 10992694Abstract: A surveillance system connectable to a network, comprising a communication module and a management module; said system being configured to, during an initialization phase: a. intercept a first message being sent to a first device; b. intercept a second message said second message being a response from the first device to the first message; c. calculate a time interval between the interception of the first message and the second message; d. repeat the steps a. to c. to determine further time intervals; e. determine a distribution of said time intervals; f. store the distribution and during a surveillance phase, intercept a third message said message being sent to the first device; intercept a fourth message said fourth message being a response to the third message; calculate a new time interval between the interception of the third and fourth messages; and verify that the new time interval is within the distribution.Type: GrantFiled: April 10, 2017Date of Patent: April 27, 2021Assignee: NAGRAVISION S.A.Inventors: Olivier Brique, Patrick Servet
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Publication number: 20210117212Abstract: A computer implemented method for sending context information between programs, the method including: displaying a graphical user interface including a plurality of selectable application icons; receiving a simultaneous selection of a first icon and a second icon from the plurality of selectable application icons; launching a first program associated with the first icon; launching a second program associated with the second icon; and sending context information between the first program and the second program.Type: ApplicationFiled: December 29, 2020Publication date: April 22, 2021Applicant: NAGRAVISION S.A.Inventors: Alain LE PERLERIN, Pierre SARDA
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Patent number: 10982972Abstract: A method for managing communications within a network comprising utility meters, each associated and connected to at least one utility management center through at least one intermediate data concentrator. A message is sent by a utility meter to the destination data concentrator. This message includes metering data measurement reported by said utility meter, its utility meter identifier, the destination data concentrator identifier and the management center identifier. Then, on the basis of several metering data measurements, a metering counter differential consumption value is calculated by difference of two metering counter consumption indexes measured by the utility meter within a time period interval. Then, a report containing at least the metering counter differential consumption value is sent from the destination data concentrator towards the utility management center to which said utility meter is associated.Type: GrantFiled: May 29, 2020Date of Patent: April 20, 2021Assignee: NAGRAVISION S.A.Inventors: Joel Wenger, Corinne Le Buhan
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Patent number: 10984091Abstract: Disclosed herein are methods and systems for validating an autonomous system that comprises a static-code module and a dynamic-code module, the method including the steps of performing a code-integrity-validation process on the static-code module and performing a behavior-integrity-validation process on the dynamic-code module. In some embodiments, performing the code-integrity-validation process on the static-code module includes performing a signature-verification process on the static-code module. In some embodiments, performing the behavior-integrity-validation process on the dynamic-code module includes using an encrypted-and-signed test vector.Type: GrantFiled: August 13, 2018Date of Patent: April 20, 2021Assignee: NAGRAVISION S.A.Inventors: Scott Jantz, Steven Seltzer
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Publication number: 20210099466Abstract: Malware detection logic executed by a secured device residing in a home network may receive a message from an unsecured device of a first unsecured network and intended for a destination device of the home network, the destination device comprising a security client. The malware detection logic may establish a secure communication channel between the malware detection logic of the secured device and the security client of the destination device. The malware detection logic may execute a validation test on the message to determine that the message includes malware. The malware detection logic may report an alarm to the security client of the destination device. The malware detection logic may transmit information related to the malware to a cloud computing server. The malware detection logic may prevent an application associated with the destination device from processing the message.Type: ApplicationFiled: June 17, 2020Publication date: April 1, 2021Applicant: NAGRAVISION S.A.Inventor: Philippe Stransky-Heilkron
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Patent number: 10964069Abstract: An automated method and a graphic processor for managing colors for a user interface to be displayed over at least one multimedia frame provided by an electronic device. The user interface comprises at least one graphical item having at least one predetermined color.Type: GrantFiled: December 11, 2015Date of Patent: March 30, 2021Assignee: NAGRAVISION S.A.Inventors: Ratnam Vadhri Venkata, Gaurav Sahi, Chawandi Prabhu, Antoine Burckard
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Publication number: 20210089679Abstract: The present invention aims to improve data protection against illegal access by a strong differentiation of the security level specific on a type of data so that when the protection on a part of the data is violated, the remaining data are still inaccessible. A method for controlling access, via an open communication network, to user private data, comprising steps of: dividing the user private data into a plurality of categories, each category defining a privacy level of the data, encrypting the user private data of each category with a category key pertaining to the category of the data, attributing to a stakeholder an entity configured for accessing to at least one category of user private data, and authorizing the access to the at least one category of user private data for the entity of the stakeholder, by providing the stakeholder with the category keys required for decrypting the user private data of the corresponding category.Type: ApplicationFiled: October 7, 2020Publication date: March 25, 2021Applicant: Nagravision S.A.Inventor: Antoine BURCKARD
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Patent number: 10955928Abstract: A smart device capable of switching between at least two applications based on the position of the smart device and a method of doing the same is provided.Type: GrantFiled: April 8, 2019Date of Patent: March 23, 2021Assignee: NAGRAVISION S.A..Inventor: Antoine Burckard
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Publication number: 20210067488Abstract: In overview, an integrated circuit in accordance with the disclosure comprises first and second network interface processors which are separate processors and which are connected by a first unidirectional interconnect. The first unidirectional interconnect allows data transfer from the first network interface processor to the second network interface processor, while preventing data transfer in the reverse direction. The first network interface processor is for communication with a first network which may be a secure network and the second network interface processor is for communication with second network which may be a public network, for example an insecure public network. In this way, the processing of data received from each of the first and second networks is performed by separate processors and data can only be sent from the first network to the second network, thereby protecting the first network from the second network.Type: ApplicationFiled: December 21, 2018Publication date: March 4, 2021Applicant: NAGRAVISION S.A.Inventors: Fabien GREMAUD, Brecht WYSEUR
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Patent number: 10939163Abstract: A method for watermarking an encrypted digital content stored in a content distribution network (CDN) method comprises the steps of receiving in the CDN, a non-watermarked encrypted content and marking metadata, said non-watermarked encrypted content being the result of an encryption of a non-watermarked clear content by a stream cipher process, said marking metadata indicating locations in the content suitable for a modification of said content; using a watermark formed of watermark values and corresponding to a unique identifier; and producing a watermarked encrypted content by combining in the CDN, with a combination function, the values forming the watermark with the non-watermarked encrypted content in locations indicated by the marking metadata.Type: GrantFiled: November 10, 2016Date of Patent: March 2, 2021Assignee: NAGRAVISION S.A.Inventors: Jean-Bernard Fischer, Brecht Wyseur
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Publication number: 20210058433Abstract: System and method for establishing secure conference calls. In one example system, a central conference call server establishes point-to-point connections with accessory devices comprising a secure element and connected to corresponding participant devices. The conference call server includes an interface to a plurality of secure elements configured to perform scrambling and unscrambling of media signals communicated to and from the accessory devices. In another example, one of the participant devices operates as the central conference call server. In other examples, participant devices communicate on a conference call via point-to-point connections between all accessory devices connected to the participant devices. The accessory devices include secure elements for decryption and encryption of media signals communicated between the accessory devices.Type: ApplicationFiled: June 4, 2020Publication date: February 25, 2021Applicant: NAGRAVISION S.AInventors: Francois FER, Marco MACCHETTI, Laurent GAUTERON, Jerome PERRINE
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Patent number: 10931997Abstract: A method to transfer a video stream from a host device comprising a controller configured for bulk transfers to a descrambling device, comprises: forming a chain out transfer comprising a chain out header linked with multiple chain out descriptors, the first chain out descriptor pointing to an out description packet containing at least one producer ID, the second and subsequent chain out descriptor pointing to chunks from the video stream, the last chain out descriptor being configured to generate an interrupt; forming a chain in transfer comprising a chain in header linked with a plurality of chain in descriptors, each chain in descriptor pointing to a descrambled chunk; requesting the controller to process the chain; receiving the description packet by the descrambling device and using key data associated with the chunks to descramble them; receiving by the controller the descrambled chunks and triggering an interrupt on the last chunk.Type: GrantFiled: August 29, 2016Date of Patent: February 23, 2021Assignee: NAGRAVISION S.A.Inventor: Fabien Gremaud
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Patent number: 10931983Abstract: Devices, servers, systems and methods for content protection are provided. Disclosed embodiments improve temporal granularity of controlling access to the protected content and increase resilience against attacks attempting to prevent re-evaluation of conditions of access. Enforcement of re-evaluation may be based on the receipt and/or verification of tokens. In some embodiments, re-evaluation is enforced by periodically rendering content keys required for content decryption unuseable and/or clearing content keys already in use.Type: GrantFiled: June 29, 2016Date of Patent: February 23, 2021Assignee: NAGRAVISION S.A.Inventors: Christian Schwarz, André Nicoulin, Didier Hunacek
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Publication number: 20210037055Abstract: The present disclosure relates generally to security solutions. More specifically, techniques (e.g., systems, methods, and devices) are provided to implement an incentivized-based intrusion detection system to detect malicious acts against an asset. The incentive may lure or facilitate the actor to provide information detecting malicious actions against an asset.Type: ApplicationFiled: July 22, 2020Publication date: February 4, 2021Applicant: NAGRAVISION S.A.Inventors: Pierre Dumont, Frederic Thabaret-Diebold, Cristian Ruiz, Riccardo Succa
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Patent number: 10909350Abstract: A method, system, device, and/or a non-transitory computer readable medium to provide a customized application associated with a television experience based on the recognition of users located in front of a television display and in the field of view of a camera. The method may include performing an initializing operation, the initializing operation including enrolling a plurality of users in a database of a computer system, acquiring a wide image using the camera and scanning the wide image for biometric information; and performing an identification operation requested by the application including, acquiring a second wide image with the camera, extracting an active area from the second wide image, storing the extracted active area as a second fast scanning area image, and extracting the biometric data of a face appearing in the second fast scanning area image.Type: GrantFiled: December 31, 2018Date of Patent: February 2, 2021Assignee: Nagravision S.A.Inventors: Christophe Oddou, Thierry Dagaeff, Nicholas Fishwick
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Patent number: 10908932Abstract: A computer implemented method for sending context information between programs, the method including: displaying a graphical user interface including a plurality of selectable application icons; receiving a simultaneous selection of a first icon and a second icon from the plurality of selectable application icons; launching a first program associated with the first icon; launching a second program associated with the second icon; and sending context information between the first program and the second program.Type: GrantFiled: August 3, 2017Date of Patent: February 2, 2021Assignee: NAGRAVISION S.A.Inventors: Alain Le Perlerin, Pierre Sarda
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Patent number: 10911955Abstract: A method of acquiring access rights to conditional access content. The method comprises receiving an access right on a first terminal through a first communication channel; storing said access right in said first terminal; sending a request for said conditional access content to a content provider, said request containing at least an identifier of an account to which said first terminal is associated, an identifier of the requested content and a piece of information concerning said access right; verifying, by said content provider, the authenticity of said access right using said piece of information concerning the access right; and when there has been a successful verification, marking said access right as used, and sending said conditional access content to at least one terminal linked to said account. The first terminal using near field communication technology (NFC) during at least one transfer of said access rights.Type: GrantFiled: July 31, 2019Date of Patent: February 2, 2021Assignee: NAGRAVISION S.A.Inventors: Pierre Sarda, Philippe Stransky, Bertrand Wendling
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Patent number: 10902139Abstract: The present invention concerns the field of data dissemination tracking, in particular aims at keeping track of the various devices in which a given data was used.Type: GrantFiled: November 29, 2016Date of Patent: January 26, 2021Assignee: NAGRAVISION S.A.Inventor: Corinne Le Buhan
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Publication number: 20210021405Abstract: Methods, system and devices are provided that generate a sequence of sub-keys for cryptographic operations from a main key. The main key is operated on only once to generate the sub-keys of the sequence, with a transformation comprising one or more one-way functions. The respective bit values of the sub-keys of the sequence are set using respective bit values of the one or more one-way functions. Advantageously, deriving sub-key bits from respective output bits of one or more one-way functions removes or at least reduces correlations between the main key and the sub-keys, as well as between sub-keys, making it harder or even impossible to recover the main key or other sub-keys from a single sub-key, for example as found using a side-channel attack.Type: ApplicationFiled: July 1, 2020Publication date: January 21, 2021Applicant: NAGRAVISION S.A.Inventors: Karine VILLEGAS, Brecht WYSEUR