公开(公告)号：US20210199466A1

公开(公告)日：2021-07-01

申请号：US17204828

申请日：2021-03-17

申请人： NAGRAVISION S.A.

发明人： Joel WENGER ,  Corinne LE BUHAN

IPC分类号： G01D4/00

摘要： 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.

公开(公告)号：US11036359B2

公开(公告)日：2021-06-15

申请号：US16216477

申请日：2018-12-11

申请人： Nagravision S.A.

发明人： David Rhys Edward Jenkins

IPC分类号： H04N21/482 ,  G06F3/0482 ,  H04N21/41 ,  H04N21/422 ,  H04N21/436 ,  H04N21/44 ,  H04N21/442 ,  H04N21/472 ,  G06F3/0488

摘要： Example embodiments provide systems and methods for managing intelligent content queuing from a secondary device for content delivery to a primary device. A content queuing system on the secondary device generates and displays a playlist interface on the secondary device. A selection of a content item to be added to a playlist is received. The content queuing system determines that addition of the content item causes a live content item to overlap with an on-demand content item on the playlist. As a result, the content queuing system creates at least two segments for the on-demand content item. The live content item is positioned between the first and a second segment on the playlist. The first segment is scheduled to end at a start time of the live content item and the second segment is scheduled to begin at an ending time of the live content item.

公开(公告)号：US11025353B2

公开(公告)日：2021-06-01

申请号：US15742653

申请日：2016-07-13

申请人： Nagravision S.A.

发明人： Bertrand Wendling ,  Jean-Philippe Aumasson

IPC分类号： H04H60/23 ,  H04N21/266 ,  H04N21/6334 ,  G06F21/10 ,  H04N21/254 ,  H04N21/4627

摘要： 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.

公开(公告)号：US20210136438A1

公开(公告)日：2021-05-06

申请号：US17149840

申请日：2021-01-15

申请人： NAGRAVISION S.A.

发明人： Fabien GREMAUD

IPC分类号： H04N21/418 ,  H04N21/436 ,  H04N21/4405 ,  H04N21/266 ,  H04N21/8352 ,  H04N21/84

摘要： 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.

公开(公告)号：US10982972B2

公开(公告)日：2021-04-20

申请号：US16887424

申请日：2020-05-29

申请人： NAGRAVISION S.A.

发明人： Joel Wenger ,  Corinne Le Buhan

IPC分类号： G01D4/00

摘要： 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.

公开(公告)号：US10931997B2

公开(公告)日：2021-02-23

申请号：US15755344

申请日：2016-08-29

申请人： NAGRAVISION S.A.

发明人： Fabien Gremaud

IPC分类号： H04N7/167 ,  H04N21/418 ,  H04N21/436 ,  H04N21/4405 ,  H04N21/266 ,  H04N21/8352 ,  H04N21/84

摘要： 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.

公开(公告)号：US10931983B2

公开(公告)日：2021-02-23

申请号：US16075102

申请日：2016-06-29

申请人： NAGRAVISION S.A.

发明人： Christian Schwarz ,  André 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.

公开(公告)号：US20200344048A1

公开(公告)日：2020-10-29

申请号：US16958104

申请日：2018-12-21

申请人： NAGRAVISION S.A.

发明人： Jean-Bernard FISCHER ,  Nicolas FISCHER ,  Fabien GREMAUD ,  Karine VILLEGAS

IPC分类号： H04L9/08 ,  H04L9/14

摘要： The present disclosure includes methods, devises and systems for preparing and installing one or more application keys owned by application owners in a remote device. The present disclosure further proposes methods, devices and systems for secure installation of subsequent application keys on a device utilising corresponding key derivation functions to associate an application with a respective policy and identifier using significantly low bandwidth for transfer of keys for execution of the respective application on the device.

公开(公告)号：US20200322655A1

公开(公告)日：2020-10-08

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： H04N21/234 ,  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.

公开(公告)号：US10728607B2

公开(公告)日：2020-07-28

申请号：US16399629

申请日：2019-04-30

申请人： Nagravision S.A.

发明人： Amudha Kaliamoorthi ,  Dharmveer Lakshmi Sharan Lal

IPC分类号： H04N21/431 ,  G06F16/78 ,  G06F16/9535 ,  G06F3/0482 ,  H04N21/258 ,  H04N21/4147 ,  H04N21/442 ,  H04N21/45 ,  H04N21/488 ,  H04N21/84

摘要： Example embodiments provide systems and methods for dynamically creating intuitive favorites for a user. The system and methods include monitoring actions performed, by the user at a digital receiver, with respect to a plurality of content programs. The actions performed with respect to the plurality of content programs are analyzed. The analysis includes comparing a level of the actions with respect to a first content program of the plurality of content programs with a threshold. Based on the comparing indicating that the first content program is a favorites, an indication that the first content program is a favorites content program is stored to a data store.