公开(公告)号：US11363351B2

公开(公告)日：2022-06-14

申请号：US16913791

申请日：2020-06-26

申请人： NAGRAVISION S.A.

发明人： Didier Hunacek

IPC分类号： H04N21/8358 ,  H04N21/2343 ,  H04N21/2362 ,  H04N21/845

摘要： The disclosure provides a method of making watermarking data embedded in an Elementary Stream ES accessible to a receiver. The ES comprises video and/or audio data and is to be transmitted as a Packetized Elementary Stream PES in a Transport Stream TS such that the receiver can use the watermarking data to watermark the video and/or audio data in the ES without reconstructing the ES from the TS. The watermarking data identifies one or more watermarking locations in the video and/or audio data in the ES to be modified by the receiver in accordance with the watermarking data. The method comprises determining respective one or more watermarking TS locations in the TS corresponding to the one or more watermarking locations. The method further comprises embedding, in the ES, the watermarking data including watermarking location information identifying the one or more watermarking TS locations, or modifying watermarking data embedded in the ES by adding the watermarking location information. The method may further comprise subsequent to embedding or modifying the watermarking data, packetizing the ES into one or more PES packets, each packet comprising a packet header, and adding watermarking data location information identifying a location in the TS corresponding to a location of the watermarking data in the ES to the packet header of a PES packet (or in a TS header or elsewhere in the TS). The disclosure also provides a corresponding method of watermarking and related systems, devices, computer programs and Transport Streams.

公开(公告)号：US11297170B2

公开(公告)日：2022-04-05

申请号：US16958081

申请日：2018-12-26

申请人： NAGRAVISION S.A.

发明人： Brecht Wyseur ,  Klaus Kursawe

IPC分类号： H04L29/06 ,  H04L9/32 ,  H04L69/22 ,  H04W84/18

摘要： A method of transmitting data to a receiver via a network includes transmitting a sequence of first data packets to the receiver via the network, each first data packet including payload data and identification data, the identification data identifying the respective first data packet, the identification data being different for each first data packet. The method also includes transmitting a corresponding second data packet for each first data packet to the receiver via the network, each second data packet including the data enabling identification of the corresponding first data packet and additional data related to the corresponding first data packet, the data enabling identification of the corresponding first data packet enabling the receiver to associate each second data packet with the corresponding first data packet.

公开(公告)号：US11271901B2

公开(公告)日：2022-03-08

申请号：US16958069

申请日：2018-12-21

申请人： NAGRAVISION S.A.

发明人： Fabien Gremaud ,  Brecht Wyseur

IPC分类号： H04L29/06

摘要： 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.

公开(公告)号：US20220021918A1

公开(公告)日：2022-01-20

申请号：US17309608

申请日：2019-12-19

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.

公开(公告)号：US20210409810A1

公开(公告)日：2021-12-30

申请号：US17294889

申请日：2019-11-21

申请人： NAGRAVISION S.A.

发明人： Hongliang LI ,  Alain DELPUCH

IPC分类号： H04N21/431 ,  G06F9/451 ,  H04N21/482

摘要： Techniques and systems are provided for processing user interface content. For example, a server computer can receive a user interface event corresponding to a user interface of a device (e.g., a client device, another server computer, or other device). An application associated with the user interface evet can be determined, and an interface model 5 can be generated using the application associated with the user interface evet. The interface model defines state information for one or more graphic objects of the user interface. The state information results from the user interface event. The server computer can send the interface model to the device, which enables the device to render the user interface.

公开(公告)号：US11206145B2

公开(公告)日：2021-12-21

申请号：US16763121

申请日：2018-11-12

申请人： NAGRAVISION S.A.

发明人： Sebastien Bellon ,  Claudio Favi ,  Roan Hautier ,  Marco Macchetti ,  Jerome Perrine

IPC分类号： G06F11/30 ,  H04L9/32 ,  G06F21/60 ,  G06F12/14

摘要： An integrated circuit and a method of configuring a plurality of integrated circuits are disclosed. Each integrated circuit comprises a cryptographic key specific to it. Each integrated circuit comprises a cryptographic key specific to it. Each cryptographic key can be generated on the respective integrated circuit using a physical unclonable function and data associated with the cryptographic key, e.g. a configuration message comprising instructions for generating the cryptographic key using the physical unclonable function. The cryptographic key specific to the integrated circuit is not stored on the integrated circuit. Each of the plurality of integrated circuits are configured using a data file that is encrypted with the respective cryptographic key specific to the integrated circuit, circuit.

公开(公告)号：US11146855B2

公开(公告)日：2021-10-12

申请号：US16279295

申请日：2019-02-19

申请人： Nagravision S.A.

发明人： Srinivasan Kannan ,  Siddalinga Swamy ,  Amudha Kaliamoorthi

IPC分类号： H04N21/45 ,  H04N21/41 ,  H04N21/422 ,  H04N21/25 ,  H04N21/258 ,  H04N21/442 ,  H04N21/466 ,  H04N21/441 ,  H04N21/4223 ,  H04N21/4415 ,  H04N21/658 ,  H04N21/433 ,  H04N21/458 ,  H04N21/482

摘要： Aspects of the present disclose involve a method, a device, and a system comprising a processor and a machine-readable storage medium storing at a set of instructions for identification and authentication of user profiles associated with a digital television system and displaying information related thereto. In example embodiments, the method includes identifying a user profile registered with a content presentation device based on received identification data that includes biometric data. The method further includes receiving, from a server, identifiers of a set of recently watched channels associated with the user profile and causing presentation of a recent channels interface that includes selectable elements corresponding to the set of recently watched channels.

公开(公告)号：US20210243402A1

公开(公告)日：2021-08-05

申请号：US17148780

申请日：2021-01-14

申请人： NAGRAVISION S.A.

发明人： Swamy SIDDALINGA ,  Kumar NISHANT ,  Chawandi PRABHU

IPC分类号： H04N5/60 ,  H04N5/62 ,  H04N5/45 ,  H04N21/81 ,  H04N21/485

摘要： A system and method of transmitting respective audio streams to a plurality of end points, such as headphones, earphones, headsets, speakers, etc. is disclosed. Different audio streams are transmitted to each of the plurality of end points. The end points may be arranged to audibly output received audio streams, and so each end point may audibly output a respective different audio stream, i.e. the respective audio streams may be mutually different from each other.

公开(公告)号：US11070863B2

公开(公告)日：2021-07-20

申请号：US16076964

申请日：2017-02-10

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 ,  H04L29/08 ,  H04N21/433 ,  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.

公开(公告)号：US20210117212A1

公开(公告)日：2021-04-22

申请号：US17136613

申请日：2020-12-29

申请人： NAGRAVISION S.A.

发明人： Alain LE PERLERIN ,  Pierre SARDA

IPC分类号： G06F9/451 ,  G06F9/445 ,  G06F8/38 ,  G06F9/48 ,  G06F9/54

摘要： 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.