Patents Assigned to Nagravision S.A.
  • Patent number: 10032435
    Abstract: Methods and systems of generating an image gradient are presented. In one example, image data for generating a two-dimensional digital image is provided to a hardware graphics processor. The image data may include a single pixel along a first direction of the digital image and multiple pixels along a second direction of the digital image. The pixels along the second direction of the digital image may include an image gradient. A one-dimensional stretching operation of the hardware graphics processor is initiated based on the image data to generate the digital image. In response to the stretching operation, the digital image may include multiple pixels along the first direction for each of the single pixels, wherein each of the multiple pixels along the first direction for a corresponding pixel of the single pixels comprises the corresponding pixel.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: July 24, 2018
    Assignee: Nagravision S.A.
    Inventors: Patrick Newcombe, Douglas Brunel Gore
  • Publication number: 20180205475
    Abstract: A broadcast receiving system is disclosed that verifies a current digital certificate extracted from a digital broadcast signal using a previous digital certificate previously stored as trusted. The current and previous digital certificates are associated with digital signatures with which data received with the broadcast signal has been signed. Also disclosed is a system for signing application data to be broadcast together with a digital certificate in a digital broadcast signal. A current digital certificate attesting the validity of a digital signature attached to broadcast data is in turn signed with a digital signature using one or more previous private keys associated with respective previous certificates identifying the issuer of the current digital certificate. These disclosures are in particular applicable to HbbTV.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 19, 2018
    Applicant: Nagravision S.A.
    Inventors: Bertrand WENDLING, Jean-Philippe AUMASSON
  • Patent number: 10027482
    Abstract: A method and a cryptographic device for encrypting/decrypting an input message by using an algorithm having as entries, said input message, a cryptographic key, and a complementary unique value used as parameter of the algorithm. The output data is formed by the input message decrypted/encrypted by the algorithm using the cryptographic key and the complementary value. The latter is determined on the basis of a unique value physically bound to an electronic device by using a physically unclonable function (PUF) which is inherent to this device and which is used to generate this unique value from a plurality of physical measurements carried out on components integrated in said device.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: July 17, 2018
    Assignee: Nagravision S.A.
    Inventors: Marco Macchetti, Claudio Favi
  • Publication number: 20180198770
    Abstract: The present invention relates to a method for processing data in a communication device comprising a host and a security module associated with this host. This method comprises the steps of generating, by the security module, a plurality of initial keys from an initial keys generation function, and of transmitting said plurality of initial keys to said corresponding host. For each initial key received by the host, the method comprises a step of generating a plurality of encryption keys by an extension module of said host, by using an extension function. The method further comprises the steps of receiving the data to be processed by said host and of combining said data to be processed with said encryption keys, in a combination module of said host.
    Type: Application
    Filed: March 5, 2018
    Publication date: July 12, 2018
    Applicant: Nagravision S.A.
    Inventor: Fabien Gremaud
  • Patent number: 9942212
    Abstract: The present invention relates to a method for processing data in a communication device comprising a host and a security module associated with this host. This method comprises the steps of generating, by the security module, a plurality of initial keys from an initial keys generation function, and of transmitting said plurality of initial keys to said corresponding host. For each initial key received by the host, the method comprises a step of generating a plurality of encryption keys by an extension module of said host, by using an extension function. The method further comprises the steps of receiving the data to be processed by said host and of combining said data to be processed with said encryption keys, in a combination module of said host. The invention further concerns a communication device and a communication system allowing for the implementation of this method, as well as a method allowing the secure exchange of data between two communication devices.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: April 10, 2018
    Assignee: Nagravision S.A.
    Inventor: Fabien Gremaud
  • Publication number: 20180082079
    Abstract: 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: Application
    Filed: November 3, 2017
    Publication date: March 22, 2018
    Applicant: Nagravision S.A.
    Inventor: Antoine Burckard
  • Publication number: 20180007401
    Abstract: A method for transmitting services information in a broadcasting network by at least one managing center towards a plurality of receivers includes exploring streams broadcasted by a DVB network and streams broadcasted by an IP network and extracting services information from these streams, completing an information table, situated at the highest level in a hierarchy of services information tables, included in the service information DVB-SI transmitted by the DVB network by services information related to the IP network, and transmitting the completed information table in the streams broadcasted by the DVB network towards the receivers having two switchable receiving modules, connected respectively to a DVB and an IP services broadcasting network. The receivers are able to activate the reception of digital data of a service, equivalent to the service currently received, with a second receiving module when receiving conditions of a first receiving module are degraded.
    Type: Application
    Filed: September 18, 2017
    Publication date: January 4, 2018
    Applicant: Nagravision S.A.
    Inventor: Antoine BURCKARD
  • Publication number: 20170364909
    Abstract: The object of the invention is to provide a secure detachable utility monitoring device to be appended to a utility metering apparatus for controlling at least one utility usage consumption. This is achieved thanks to a detachable metering monitoring device to be connected with a utility meter for controlling at least one utility consumption metered by said utility meter comprising: means to acquire a utility consumption value metered by said utility meter, a first memory to store at least a unique identifier ID and a personal key, both pertaining to said device, means to generate a cryptogram from information data comprising at least the utility consumption value, said cryptogram being encrypted with said personal key, means to generate an information message including at least said cryptogram and the unique identifier ID, means to send the information message to a remote management center.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 21, 2017
    Applicant: Nagravision S.A.
    Inventors: Corinne LE BUHAN, Christophe NICOLAS, Joel CONUS, Joel WENGER
  • Publication number: 20170341290
    Abstract: A plastic sheet for manufacturing of a plurality of smart cards which respectively include a plurality of electronic units, includes a first sheet formed of a first material having a first hardness or a first Vicat softening temperature, the first sheet including a plurality of apertures and/or cavities. The plastic sheet includes a second material having, when the first material has the first hardness, a second hardness lower than the first hardness, and when the first material has the first Vicat softening temperature, a second Vicat softening temperature lower than the first Vicat softening temperature, the second material being located inside the apertures and/or cavities in the first sheet. The apertures and/or cavities with the second material located inside the apertures and/or cavities are configured to respectively receive said electronic units via an at least partial penetration from the electronic units into the second material.
    Type: Application
    Filed: August 14, 2017
    Publication date: November 30, 2017
    Applicant: Nagravision S.A.
    Inventor: Francois DROZ
  • Patent number: 9807432
    Abstract: A method for transmitting services information in a broadcasting network by at least one managing center towards a plurality of receivers connected on one hand to a digital data streams broadcasting network of DVB type and on the other hand to a digital data streams broadcasting network of IP type, said streams comprising content data of the services and additional information data on said services structured in tables adapted to the transmission protocol specific to each type of network.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: October 31, 2017
    Assignee: Nagravision S.A.
    Inventor: Antoine Burckard
  • Patent number: 9740913
    Abstract: Method to customize an application associated with a television experience based on the recognition of users located in front of a display and in the field of view of a camera, comprising the following steps: —an initialization step during which each user is enrolled in a database of a computer system and is defined by a profile referenced by a profile ID and comprising the user name, biometric data and additional personal data, —a finding step during which a wide image, acquired by said camera is scanned to isolate at least one user's faces, to define a marking area surrounding it, to memorize the position of said marking areas, —a matching step to extract the biometric data from said marking area, to match them with the biometric data of the profiles stored in the database, and to assign the detected profile ID with the marking area.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: August 22, 2017
    Assignee: Nagravision S.A.
    Inventors: Christophe Oddou, Thierry Dagaeff, Nicholas Fishwick
  • Publication number: 20170098214
    Abstract: A secure detachable utility monitoring device is disclosed, to be appended to a utility metering apparatus for controlling at least one utility usage consumption. A detachable metering monitoring device of at least one embodiment includes: a usage reading interface to acquire a utility consumption value metered by the utility meter; a first memory to store at least a unique identifier ID and a personal key, both pertaining to the device; a crypto processor to generate a cryptogram from information data comprising at least the utility consumption value, the cryptogram being encrypted with the personal key; a message generator to generate an information message including at least the cryptogram and the unique identifier ID; and a communication network interface including a sending unit to send the information message to a remote management center.
    Type: Application
    Filed: June 21, 2016
    Publication date: April 6, 2017
    Applicant: Nagravision S.A.
    Inventors: Corinne LE BUHAN, Christophe NICOLAS, Joel CONUS, Joel WENGER
  • Patent number: 9496843
    Abstract: Aspects of the present disclose involve a method, a device, and a system comprising a processor and a machine-readable storage medium storing a set of instructions for providing audio level safeguards for output audio signals. In example embodiments, the method includes accessing a most recent audio level of an audio output device and determining whether the most recent audio level transgresses a threshold value. Based on determining the most recent audio level transgresses the threshold value, a current audio level output by the audio output device is set to the threshold value. Thereafter, the current audio level is gradually increased, at repeated time intervals, until it reaches the most recent audio level.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: November 15, 2016
    Assignee: Nagravision S.A.
    Inventor: Prabhu Chawandi
  • Publication number: 20160308925
    Abstract: An embodiment of the present invention may be deployed in a system comprising a media player and a remote server operably connected to communicate with one another. The invention allows for a settings file to be stored on the remote server, the settings file comprising parameters useful for adjusting different settings on the media player such that rendering of a particular content to be made possible on the media player according to a user's predetermined taste by downloading the settings from the server onto the media player.
    Type: Application
    Filed: May 7, 2014
    Publication date: October 20, 2016
    Applicant: Nagravision S.A.
    Inventors: Aditee Anil PATHAK, Philippe STRANSKY, Gyanveer SINGH
  • Patent number: 9465445
    Abstract: 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: Grant
    Filed: July 2, 2014
    Date of Patent: October 11, 2016
    Assignee: Nagravision S.A.
    Inventor: Antoine Burckard
  • Patent number: 9432709
    Abstract: Example embodiments relate to a system to prevent manipulation of transmitted video data including an Integrated Receiver Decoder (IRD) receiving audio/video data and a display device. The IRD may include a device to transmit an HDMI compliant audio/video stream toward the display device. The system may further include a device to add an over-encryption layer to the HDMI/HDCP stream before reaching the display device and a device to remove the added encryption layer so as to recover the HDMI/HDCP stream, before processing the HDMI/HDCP stream by the display device.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: August 30, 2016
    Assignee: Nagravision S.A.
    Inventors: André Kudelski, Christophe Nicolas
  • Patent number: 9384658
    Abstract: The present invention relates to a system, and method for enforcing utility usage and metering functions by a utility meter associated with a utility consumer end user, connected to a remote utility management center by a communication network. The present invention proposes a utility meter for controlling and metering a least one utility consumption.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: July 5, 2016
    Assignee: Nagravision S.A.
    Inventors: Corinne Le Buhan, Christophe Nicolas, Joël Conus
  • Publication number: 20160173946
    Abstract: Method for securing control words within a decoder in charge of descrambling digital content protected by these control words, comprising the following steps: for each descrambling unit of this decoder, loading in a directory a pairing key referenced by an identifier associating said key to a descrambling unit; receiving at least one encrypted control word referenced by an indication allowing to identify the descrambling unit for which it is intended; decrypting the control word by using a first key shared with a security module; identifying in the directory the pairing key whose identifier corresponds to the indication of destination associated to the control word; encrypting this control word by using this pairing key; and storing in a register the control word in a chronological and referenced way.
    Type: Application
    Filed: July 4, 2014
    Publication date: June 16, 2016
    Applicant: Nagravision S.A.
    Inventors: Marco MACCHETTI, Jerome PERRINE, Patrick SERVET, Didier HUNACEK HUNACEK
  • Patent number: 9367789
    Abstract: The invention relates to an external connector for the production of an electronic card comprising an insulating support that defines an outside face and an inside face opposite one another and a plurality of external metal contact pads. This external connector additionally comprises a plurality of metal projections located on the side of the inside face of the insulating support and respectively connected electrically to at least one subassembly of the plurality of external metal contact pads and/or to contact pads linked to an electronic unit, which is arranged on the inside face of the insulating support, wherein these metal projections are intended to be inserted into individual cavities of the body of the electronic card, and metal contact pads linked to an electronic unit inside the card body and/or an antenna incorporated in this card body are located at the base of these cavities.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: June 14, 2016
    Assignee: Nagravision S.A.
    Inventor: François Droz
  • Patent number: 9313258
    Abstract: In example embodiments, a system and method for managing switching between devices are provided. A consolidated catalog of applications available on devices coupled to a master device is maintained. The consolidated catalog of applications is graphically presented on a screen controlled by the master device. A selection of an application from the consolidated catalog of applications is received via a control device. Based on the selected application being located at a device coupled to the master device, input is automatically switched from the master device to the device having the selected application. As a result, a display corresponding to the selected application is presented on the screen.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 12, 2016
    Assignee: Nagravision S.A.
    Inventor: Philippe Stransky-Heilkron