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1. 发明申请

US20230098925A1 DEVICE LOCATION DETERMINATION 有权
公开(公告)号：US20230098925A1
公开(公告)日：2023-03-30
申请号：US18062383
申请日：2022-12-06
申请人： Nagravision S.A.
发明人： Thiru balaji Somasundaram
IPC分类号： H04N21/254 , H04N21/258 , H04N21/414 , H04N21/422 , H04N21/426 , H04N21/658
摘要： In overview, the disclosed methods, devices, and systems enable the location of the first device to be verified. In particular, second location verification data is generated using a current location of the second device is provided to a first device by a second device which can be matched with first location verification data received by the first device from a server, the first location verification data is generated using a stored location of the first device. If the first and second location verification data match, the location of the first device is considered to have been verified.

2. 发明授权

US11575977B2 Secure provisioning, by a client device, cryptographic keys for exploiting services provided by an operator 有权
公开(公告)号：US11575977B2
公开(公告)日：2023-02-07
申请号：US17012440
申请日：2020-09-04
申请人： NAGRAVISION S.A.
发明人： Yann Bieber , André Nicoulin
IPC分类号： H04L9/08 , H04N21/835 , H04L9/16 , H04N7/167 , H04N21/6334 , H04N21/4405 , H04L9/14
摘要： A method for securely receiving a multimedia content by a client device operated by one or more operator(s) involving a dedicated provisioning server of a security provider managing symmetric secrets used by the client devices and operators license servers. The provisioning server provides to the client device one or more generations of operator specific unique device secrets, which are then exploited by the various operators' license servers to deliver licenses such that authorized client devices can consume protected multimedia contents.

3. 发明申请

US20230026652A1 TECHNIQUES FOR INCENTIVIZED INTRUSION DETECTION SYSTEM 有权
公开(公告)号：US20230026652A1
公开(公告)日：2023-01-26
申请号：US17955840
申请日：2022-09-29
申请人： NAGRAVISION S.A.
发明人： Pierre Dumont , Frederic Thabaret-Diebold , Cristian Ruiz , Riccardo Succa
IPC分类号： H04L9/40 , G06Q30/02
摘要： 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.

4. 发明授权

US11546135B2 Key sequence generation for cryptographic operations 有权
公开(公告)号：US11546135B2
公开(公告)日：2023-01-03
申请号：US16918426
申请日：2020-07-01
申请人： NAGRAVISION S.A.
发明人： Karine Villegas , Brecht Wyseur
IPC分类号： H04L9/06
摘要： 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. At the same time, by using the main key only once (rather than using the main key each time a sub-key is generated), the vulnerability of the main key to a side-channel attack is reduced, because the opportunities for recovering physical information that could lead to the discovery of the main key are reduced. Specific embodiments use parallel or chained execution of sub-functions to generate respective sub-keys. Other specific embodiments generate all sub-keys from a single one-way function in one go.

5. 发明申请

US20220407869A1 SECURED HOME NETWORK 有权
公开(公告)号：US20220407869A1
公开(公告)日：2022-12-22
申请号：US17894276
申请日：2022-08-24
申请人： NAGRAVISION S.A.
发明人： Philippe Stransky-Heilkron
IPC分类号： H04L9/40 , H04W12/128 , H04W12/12
摘要： 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.

6. 发明授权

US11528523B2 Method and system to share a snapshot extracted from a video transmission 有权
公开(公告)号：US11528523B2
公开(公告)日：2022-12-13
申请号：US17350226
申请日：2021-06-17
申请人： NAGRAVISION S.A.
发明人： Didier Hunacek , Olivier Schaer , Frederic Thomas
IPC分类号： G06F15/16 , H04N21/2743 , H04N21/475 , H04N21/4788 , H04N21/433 , H04L67/568 , H04N21/61 , H04N21/8549
摘要： The present invention refers to the field of television experience in particular the simultaneous use of the portable computing device and a television to share a user's experience. The present disclosure proposes a method to create a snapshot from a video transmission received by a receiver, said receiver being connected with a portable computing device and having a screen output, said method comprising the steps of receiving a video transmission by the receiver, converting by the receiver, the video transmission into a lower-bandwidth video transmission, sending the lower-bandwidth video transmission to the portable computing device, receiving from the portable computing device to the receiver, a command to execute a snapshot, producing by the receiver a snapshot from the video transmission, sending the snapshot to the portable computing device.

7. 发明授权

US11457248B2 Method to insert ad content into a video scene 有权
公开(公告)号：US11457248B2
公开(公告)日：2022-09-27
申请号：US16820980
申请日：2020-03-17
申请人： NAGRAVISION S.A.
发明人： Philippe Stransky-Heilkron
IPC分类号： H04N21/23 , H04N21/234 , H04N21/44 , H04N21/81 , H04N5/272 , H04N21/2343 , H04N21/462 , H04N21/2668 , H04N21/431 , H04N21/4402 , H04N21/258 , H04N21/433
摘要： A post-processing of video content in order to provide a capability to insert ad content, having a method to produce a modified video content from an original video content. The method comprising: analyzing the original video content to detect at least one marker, said marker comprising a marker surface delimited by a marker identification; loading profile data of a target user; determining, based at least on the profile data a replacement content; adjusting the replacement content into the marker surface; and replacing into the original video content the marker surface by the adjusted replacement content to produce the modified video content.

8. 发明授权

US11436350B2 Protecting media content 有权
公开(公告)号：US11436350B2
公开(公告)日：2022-09-06
申请号：US16484343
申请日：2018-02-02
申请人： NAGRAVISION S.A.
发明人： Didier Hunacek , Herve Goupil
IPC分类号： G06F21/60 , G06F21/10 , H04L9/08 , H04L9/32 , H04L9/40 , H04N21/4408 , H04N21/4627
摘要： Content source and sink devices and methods help to guard against compromising security of content transferred from a source device to a sink device, for example where a primary encryption mechanism protecting the content has been compromised. A content source device is configured to connect to a content sink device to transmit digital media content to the content sink device. The content source device includes a connection module configured to establish a connection to the sink device, encrypt a digital media content for transmission across the connection with a first cipher using a connection key, and transmit the encrypted digital media content to the sink device over the connection. The content source also includes a protection module configured to prevent the sink device from using the digital media content without authorisation. The protection module receives a digital certificate identifying the sink device, verifies the digital certificate, and determines if the digital certificate identifies a sink device authorised to receive digital media content over the connection. If the determination is positive, the protection module enables the sink device to use the digital media content.

9. 发明申请

US20220212845A1 DEVICE FOR SECURING A BOTTLE'S CAP, CORRESPONDING METHOD AND COMPUTER PROGRAM PRODUCT 有权
公开(公告)号：US20220212845A1
公开(公告)日：2022-07-07
申请号：US17647050
申请日：2022-01-05
申请人： NAGRAVISION S.A.
发明人： Bertrand WENDLING
IPC分类号： B65D55/02 , B65D55/06
摘要： A device for securing a bottle's cap includes a first part; a second part mechanically connected to the first part through a mechanical connection; and a securing component including a radio frequency transponder, a first portion of the component being implemented in the first part of the device, a second portion of the component being implemented in the second part of the device, at least one portion of the component extending through the mechanical connection. The second part includes a device for fixing the device to a cap of a bottle. The mechanical connection is configured for breaking when a traction or a torsion is applied on the first part of the device versus the second part

10. 发明授权

US11368738B2 Method, receiver, mobile display device and system for accessing media content 有权
公开(公告)号：US11368738B2
公开(公告)日：2022-06-21
申请号：US16334949
申请日：2017-11-03
申请人： NAGRAVISION S.A.
发明人： Jean-Bernard Fischer
IPC分类号： H04N21/41 , H04N21/262 , H04N21/433 , H04N21/437 , H04N21/462 , H04N21/472 , H04N21/482 , H04L65/612 , H04N21/436
摘要： The disclosure generally relates to a method for accessing media content, said method being used in a receiver (10). The method comprises a preparation phase and a use phase. The preparation phase comprises the steps of obtaining, by said receiver (10), a catalog of media content items, each media content item corresponding to a media content and comprising at least an item description and an item identification data and storing said catalog of media content items in a local database in a memory (13) of the receiver (10). The use phase comprises the steps of accessing, by a mobile display device (11), said catalog of media content items through a local communication channel (16); displaying at least a part of the catalog of media content items on the mobile display device (11); selecting, by said mobile display device (11), at least one media content item displayed on the mobile display device; transmitting, by said mobile display device (11), a request to a content provider (12), the request comprising the item identification data corresponding to said selected media content item and additional data allowing for the receiver (10) to be identified, said transmission using a first remote communication channel (17) distinct from said local communication channel (16); and obtaining by the receiver (10), the media content corresponding to the media content item identified by the identification data contained in said request. The disclosure further relates to a receiver (10) and a mobile display device (11) for implementing the above described method and a system comprising at least said receiver and said mobile display device.

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