Nagravision S.a.

Frederic Thomas

Fabien Gremaud

Jean-Bernard Fischer

Pierre Sarda

Didier Hunacek

Philippe Stransky-Heilkron

Olivier Schaer

Henri Kudelski

Guy Moreillon

Martin Gibson

Scott Jantz

Nir Livay

Philippe Desarzens

Laurent Piron

Sebastien Robyr

David Servignat

The present disclosure proposes method and systems for establishing secure communication session(s) between a first device and a second device, where the first device operates in a user network and implements a first key exchange protocol for secure communication. The second device is capable of communicating with the first device over a wireless communication network. The second device implements a second key exchange protocol that is different to the first key exchange protocol for secure communication. A proxy entity configured for implementing the first and the second key exchange protocols for secure communication is provided. The proxy entity is configured for generating and/or provisioning one or more session keys for the first and the second devices using the key exchange protocols specific to each device for establishing secure communication between the first and second device based on the generated session key(s).

Key negotiation and provisioning for devices in a network

In overview, a computer-implemented method of transmitting data in a data stream from a first device to a second device is disclosed. The data stream is encrypted before transmission from the first device to the second device, and a location of the data in the data stream is indicated to the second device. The location may be a pre-shared location between the first and second devices, or the first device may transmit the location of the data to the second device. The second device decrypts the encrypted data stream, identifies the data in the data stream based on the location, and encrypts the identified data in the data stream.

Securely transmitting data in a data stream

The present disclosure proposes method and systems for establishing secure communication session (s) between a first device and a second device, where the first device operates in a user network and implements a first key exchange protocol for secure communication. The second device is capable of communicating with the first device over a wireless communication network. The second device implements a second key exchange protocol that is different to the first key exchange protocol for secure communication. A proxy entity configured for implementing the first and the second key exchange protocols for secure communication is provided. The proxy entity is configured for generating and/or provisioning one or more session keys for the first and the second devices using the key exchange protocols specific to each device for establishing secure communication between the first and second device based on the generated session key(s).

A method for identifying a peripheral device from a digital content having been received by said peripheral device from a master device located at a user end is described. The master device can be connected to a server located at a back end, and the method includes receiving, by the master device from the peripheral device, at least peripheral identification data. The method also includes generating, at the master device, a first mark as a function of at least a part of the peripheral identification data, and watermarking the digital content using the first mark before transmitting the digital content to the peripheral device.

Method and device for identifying a peripheral device from a digital content

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.

Method and system to share a snapshot extracted from a video transmission

A method for initiating a transmission of a program stream for delivery from a local access point to a client device, said program stream being structured as a plurality of regular segments relating to a single event. This method comprises the steps of: (a) processing at least one of the regular segments into a set of particular segments, where the at least one regular segment carries a payload of a first playback duration and the payload of said set represents a second playback duration that is greater than that of the first playback duration, and where the second playback duration is sufficient to comply with a client device requirement for initiating a rendering of the event, and (b) transmitting, during an initial period, from the local access point said set of particular segments.

Method for initiating a transmission of a streaming content delivered to a client device and access point for implementing this method

A method for identifying a peripheral device from a digital content having been received by said peripheral device from a master device located at a user end, said master device being further configured to be connected to a server located at a back end, said method comprising the steps of: receiving, by the master device from the peripheral device, at least peripheral identification data; generating, at the master device, a first mark as a function of at least a part of said peripheral identification data; and watermarking said digital content using said first mark before transmitting said digital content to said peripheral device.

The present invention relates to the domain of control of access to audiovisual content transmitted to a receiver, in particular control based on the localization of the receiver. This invention proposes a method of control of access to content transmitted to a receiver, said receiver being part of an access geographic control system comprising verification means and security means, the method comprising the following steps:

Method for controlling access to broadcast content

The present invention describes a method to select an application on a first device having an NFC interface and comprising a plurality of applications using the NFC interface, said method comprising the steps of detecting a second device having a NFC interface via the NFC interface of the first device, obtaining via the NFC interface a message comprising a message type and a service identification, determining an application type based on the message type and the service identification, selecting at least one application among the plurality of applications matching the message type and the service identification, prompting a user of the first device to accept a communication between the second device and the selected application, in case of positive answer, notifying the selected application of the message type, establishing the communication between the selected application and the second device via the NFC interface.

Method and apparatus for selecting an application of a device having an NFC interface

A configuration method of a multimedia system comprising a first device and at least one adjacent device having a mechanism to communicate with the first device. The first device comprises a mechanism to read/write data from/to an NFC data carrier. The method comprises a set-up phase and an exploitation phase.

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Onex, Switzerland

Frederic Thomas