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21. 发明授权

US11212357B2 Media player for receiving media content from a remote server 有权
公开(公告)号：US11212357B2
公开(公告)日：2021-12-28
申请号：US16596294
申请日：2019-10-08
申请人： NAGRAVISION S.A.
发明人： Aditee Anil Pathak , Philippe Stransky , Gyanveer Singh
IPC分类号： G06F15/16 , H04L29/08 , H04W12/06 , H04W4/18 , H04L29/06
摘要： 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.

22. 发明申请

US20210400472A1 SECURE BEACONS 有权
公开(公告)号：US20210400472A1
公开(公告)日：2021-12-23
申请号：US17296580
申请日：2019-11-29
申请人： NAGRAVISION S.A.
发明人： Jean-Philippe AUMASSON
IPC分类号： H04W12/03 , H04L9/32 , H04L9/06 , H04W12/06 , H04W4/80
摘要： A method for securing a beacon signal in a network comprising a transmitter for broadcasting the beacon signal and one or more receivers for receiving the beacon signal, wherein the beacon signal comprises a data packet (103) including a payload (106) that comprises a first field containing broadcast information from the transmitter and a second field (204) for storing authentication information, the method comprising: computing, using a secret key, a message authentication code over the payload; extracting bytes from the message authentication code to obtain the authentication information; and encrypting the first field using a symmetric cipher which takes as parameter the secret key and a nonce, wherein the nonce comprises the authentication information, the encrypting resulting in an encrypted first field, the resulting secure beacon signal (200) comprising the encrypted first field (203) and the second field (204) with the authentication information.

23. 发明申请

US20210357623A1 METHOD AND DEVICE TO SPEED UP FACE RECOGNITION 有权
公开(公告)号：US20210357623A1
公开(公告)日：2021-11-18
申请号：US17133085
申请日：2020-12-23
申请人： Nagravision S.A.
发明人： Christophe ODDOU , Thierry DAGAEFF , Nicholas FISHWICK
IPC分类号： G06K9/00 , G06K9/20 , G06K9/72
摘要： 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. While subsequent identification is requested by the application, the following steps are executed acquiring a wide image with the camera, extracting the areas of said image according to the marking areas, extracting for a particular marking area the biometric data of a face, starting the comparison of the extracted biometric data with the biometric data of the profile ID related to this marking area, and in absence of match, continuing with the other biometric data of the database until one profile is found, transmitting the found profile ID to the application.

24. 发明申请

US20210329326A1 PRE-ENTITLEMENT ENFORCEMENT 有权
公开(公告)号：US20210329326A1
公开(公告)日：2021-10-21
申请号：US17358789
申请日：2021-06-25
申请人： NAGRAVISION S.A.
发明人： Didier HUNACEK , Jean-Bernard FISCHER
IPC分类号： H04N21/266 , H04N21/235 , H04N21/418 , H04N21/4623 , H04N21/6334
摘要： A method of transmitting entitlement messages to content consumption devices in a access control system, the method comprising periodically transmitting entitlement messages to content consumption devices in a access control system and periodically extending an expiry time comprised in the entitlement messages. The entitlement messages comprise indicator data indicating to the content consumption devices that subsequent entitlement messages loaded into a content consumption device after a first entitlement message is loaded into the content consumption device shall not be used by the content consumption device to access protected media content.

25. 发明授权

US11132664B2 Securing contactless payment performed by a mobile device 有权
公开(公告)号：US11132664B2
公开(公告)日：2021-09-28
申请号：US15535932
申请日：2015-12-17
申请人： NAGRAVISION S.A.
发明人： Herve Pelletier
IPC分类号： G06Q20/32 , G06Q20/38
摘要： The method, the mobile device, and the payment terminal of the invention relate to security of contactless payment performed during a purchase of products or services by using a short-range wireless communication between the mobile device and the payment terminal. Various external parameters associated to the payment transaction may be exchanged between the mobile device and the payment terminal. Preferred embodiments comprise external parameters such as respective positions of the mobile device and the payment terminal, time stamps related to transaction processing time or identifiers of each the mobile device and the payment terminal. Difference values related to these external parameters are verified by both the mobile device and the payment terminal by carrying out comparison with reference values before validation of the payment transaction by the payment terminal.

26. 发明申请

US20210182435A1 SECURING DATA STORED IN A MEMORY OF AN IOT DEVICE DURING A LOW POWER MODE 有权
公开(公告)号：US20210182435A1
公开(公告)日：2021-06-17
申请号：US17270872
申请日：2019-08-13
申请人： NAGRAVISION S.A.
发明人： Didier HUNACEK , Marco MACCHETTI , Jerome PERRINE
IPC分类号： G06F21/72 , G06F21/60 , G06F21/81 , H04L9/08 , G06F1/3234
摘要： The disclosure relates to a method for enabling the secure functions of a chipset (1) and especially the encryption of the content of the secure memory (7) when the device goes into low power mode. The content of the secure memory (7) may be encrypted and stored in an external memory (20) during low power mode of the chipset (1).

27. 发明申请

US20210168413A1 CONTENT PROTECTION 有权
公开(公告)号：US20210168413A1
公开(公告)日：2021-06-03
申请号：US17147349
申请日：2021-01-12
申请人： NAGRAVISION S.A.
发明人： Christian SCHWARZ , Andre NICOULIN , Didier HUNACEK
IPC分类号： H04N21/2347 , H04N21/266 , H04N21/418 , H04N21/4405 , H04N21/4623 , G06F21/57 , H04L9/16 , H04L9/32 , H04N7/167
摘要： 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.

28. 发明申请

US20210152587A1 METHOD AND SYSTEM TO DETECT ABNORMAL MESSAGE TRANSACTIONS ON A NETWORK 有权
公开(公告)号：US20210152587A1
公开(公告)日：2021-05-20
申请号：US17162426
申请日：2021-01-29
申请人： NAGRAVISION S.A.
发明人： Olivier BRIQUE , Patrick SERVET
IPC分类号： H04L29/06 , H04L12/26 , H04L12/24
摘要： 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.

29. 发明申请

US20210144444A1 METHOD AND APPARATUS FOR PERIPHERAL CONTEXT MANAGEMENT 有权
公开(公告)号：US20210144444A1
公开(公告)日：2021-05-13
申请号：US17022256
申请日：2020-09-16
申请人： NAGRAVISION S.A.
发明人： Amudha Kaliamoorthi , Prabhu Chawandi , Karthikeyan Srinivasan , Jihyun Park , Jun Seo Lee
IPC分类号： H04N21/482 , G06F3/0488 , H04N21/422 , H04N21/222 , H04N21/84
摘要： The present disclosure relates to a method and system for presenting a set of control functions via an interface of a peripheral control device (PCD). A control function can include a command associated with one or more media contexts of a host media device. The method decodes a payload, from the host media device, with an encoded context identifier, where the context identifier indicates a primary media context active on the host media device. The method determines one or more control functions corresponding to the context identifier, and changes the set of control functions on the interface of the PCD to include the one or more control functions that can command the primary media context.

30. 发明授权

US10992694B2 Method and system to detect abnormal message transactions on a network 有权
公开(公告)号：US10992694B2
公开(公告)日：2021-04-27
申请号：US16090141
申请日：2017-04-10
申请人： NAGRAVISION S.A.
发明人： Olivier Brique , Patrick Servet
IPC分类号： H04L29/06 , H04L12/24 , H04L12/26
摘要： 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.

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