Thomson Licensing

Thomson Licensing S.a.

Thomson Multimedia S.a.

Thomson Consumer Electronics S.a.

Laboratoire Europeen De Recherches Electroniques Avancees, Societe En

Laboratoire Europeen De Recherches Electroniques Avancees Societe En Nom

Laboratoire Europeen De Recherches Electroniques Avancees

Thomas Consumer Electronics, S.a.

Contentarmor

Eric Diehl

Alain Durand

Joel Hamon

Michel Leduc

Yves Maetz

Jean-Pierre Andreaux

Olivier Heen

Mohamed Karroumi

Nour-Eddine Tazine

Stéphane Onno

Philippe Letellier

Marc Eluard

Pierre Houeix

Nicolas Prigent

Ralf Schaefer

Sylvain Chevreau

Jean-Louis Diascorn

Jiang Shao

David Naccache

Marc Joye

Franck Abelard

Joel Sirot

Teddy Furon

Jean-Claude Guillon

Yan-Mei Tang-Talpin

Jean-François Vial

Louis-Xavier Carbonnel

Jacques Mingot

Helmut Burklin

Fabien Battini

Francis Renard

Stéphanie Lion

Albert Dorner

Michel Morvan

St&eacute;phane Morcel

Jean Pierre Andreaux

Jacky Mahler

Marc Amstoutz

Dominique Gagnot

Pascal Saucy

Rlad Kouba

Joel Sirop

A second screen system comprises a first screen that renders a first content comprising watermarks of a first type and watermarks of a second type. The watermarks of the first type are captured by a second screen that reacts to these watermarks. The second screen displays information to a user and receives user input. The second screen also watermarks a second content with watermarks of the second type and renders the second content. A third device captures watermarks of the second type in both the first content and the second content. Since the watermarks embedded by the second screen can depend on the user's actions, the third device can indirectly react to the user's actions.

Second screen device and system

A main screen renders watermarked content. A remote device captures a watermark and extracts a payload comprising a layout type, displays possible answers according to the layout type and receives a response from a user. The remote device captures a further watermark and extracts a payload comprising a correct answer, a ratio value and a token value. If the correct answer is equal to the answer received from the user, the remote device generates a comparison value, compares the comparison value and a ratio value extracted from the payload and, if the comparison between the comparison value and the ratio value indicates that remote device has been selected, displays a message intended to a user. The remote device can further generate a value from at least the token value and display this value as proof of being selected.

Method and a device for selecting a participating device

A receiver receives digital content scrambled using a control word and a user code for the scrambled content. A user inputs the user code that is forwarded to a code extractor that generates the control word and a user identifier from it. The control word is sent to a descrambler, a watermark information generator and a visible watermark insertion unit. The descrambler descrambles the scrambled content using the control word, an invisible watermark insertion unit inserts invisible watermark information obtained from the watermark information generator into the descrambled content and the visible watermark insertion unit inserts the user identifier as a visible watermark. Also provided are a corresponding method for processing digital content and a method and a device for generating the user code.

Distribution of digital content protected by watermark-generating password

A method of processing digital content according to a workflow. The digital content is received and information for the workflow is checked to decide if a processing device is authorized to process the content, the workflow imposing that the digital content be processed in a process chain comprising at least two nodes, wherein the processing device is authorized to process the content if it corresponds to the node that according to the process chain is the next node to process the digital content. If the processing device is authorized to process the content, the digital content is processed and the information for the workflow is updated. Also provided is a system.

Method and system digital for processing digital content according to a workflow

The invention relates to a local digital network comprising: The source device uses a network active encryption key to encrypt data liable to be broadcast in the network and the receiver device contains: The invention also relates to the installing of new devices in such a network as well as the sending of data from a source device to a receiver device.

Local digital network, methods for installing new devices and data broadcast and reception methods in such a network

A method of protecting a graphical object represented by a list of vertices and a list of surfaces, each surface being defined by a number N vertices. A device selects a surface S with N vertices; computes a new vertex d using a random or pseudo-random function; inserts the new vertex d into the list of vertices; creates N new surfaces S-SN from the surface S and the new vertex d; and replaces the selected surface S by the new surfaces S-SN in the list of surfaces. The device preferably iterates the method. The device may shuffle the list of vertices with the inserted vertices. Also provided is an unprotection method and corresponding devices and computer readable storage media.

Methods and devices for 3D object protection using surface subdivision

A method for secured entry of personal data is disclosed. This method comprises for each item of personal data a first step of presentation of a virtual keyboard comprising keys and a first cursor, followed by a step of selection of a key corresponding to the item of personal data wherein the virtual keyboard also comprises at least one dummy cursor and wherein the position on the virtual keyboard of the at least one dummy cursor depends on the position of the first cursor. A device for secured entry of personal data configured to implement the method is further disclosed.

Method and device for secured entry of personal data

A method for discovering emulated clients. A verifier sends a cryptographic challenge C to a client and preferably starts a timer. The client uses a deterministic key search algorithm to find the correct key and returns the result as a number of tries needed. The verifier then stops the timer if this was started and verifies that the result is correct and preferably that the response was timely. Also provided is a verifier.

Device and method using non-cycle accurate measurements for discovering emulated clients

There are times when a first user may wish to distribute an excerpt of a protected digital content to a second user, for example for criticism. The protected digital content is divided into a plurality of parts, each part being encrypted using a control word specific for the part, wherein each control word can be generated from a master control word for the protected digital content. A device belonging to the first user selects the parts of the excerpt; generates the control words for the selected parts from the master control word; generates a license for the selected parts, the license comprising the control words for the selected parts; and transmits the selected parts and the license to the receiver of the second user. Also provided is the device of the first user.

Method and device for excerpt licensing

A content server maintains a database of different content files, these files being scrambled by control words that are stored in a database. The control words are necessary for descrambling the content files. When a device requests a content file, it sends a public key to the content server, along with the request. The content server encrypts the control words with the public key and transmits both the ciphered control words and the scrambled content file to the device. In one embodiment, the device decrypts the control words, and, when a further device on the home network requests a content file, sends the scrambled content file, along with the necessary control words encrypted with a local key that may have been provided by the further device.

Method for secure distribution of digital data representing a multimedia content

The invention relates to a method for controlling digital rights of the 'Play N times' type for a digital audio and/or video content, referred to as controlled content, the controlled content being consumed by a consumer on a consuming device or on another device delegating the controlling of these rights to the consuming device. According to this method, charging of one additional usage is inhibited in at least one of the following cases where:

Method for controlling digital rights of the 'Play N times' type for a digital audio and/or video content and device implementing this method

A cartridge preferably for use with a game console. The cartridge comprises a ROM, a non-volatile memory, a processor and an encryption unit. An application running on the console may read data from the ROM, read data from the non-volatile memory, and write data in the non-volatile memory. Data to be written in the non-volatile memory is encrypted by the encryption unit, but data to be read is returned in encrypted form for decryption by a decryption function of the game application. Data may also be received encrypted to be decrypted and returned. The encryption or decryption unit may also receive data from the non-volatile memory and send it to the interface. The invention improves on the prior art copy protection as a hacker must reverse engineer the game application in order to copy it, if the encryption unit is unknown. The invention also provides an optical medium equipped with a RFID circuit.

Copy-protected software cartridge

A method for service delivery to a client, in which the client selects a service, and establishes a connection with a system server to which it sends an identity associated with the client and an identifier of the service. The system server verifies that the client is authorized to access to the service and that the client is non-emulated. If this is verified, the service is provided to the client. In a preferred embodiment, the service is scrambled content and the system server provides a descrambling key to the client, and instructs a content server to provide the scrambled content to the client. Also claimed are a device, a system, and a system server.

Device, system and method for service delivery with anti-emulation mechanism

A media package storing program code, the media package comprising a medium storing a first part of the program code intended to be executed on a processor external to the media package, and a processing device storing a state and a second part of the program code, the first and the second parts of the program code being adapted to interact when executed so as to execute the program code. The processing device comprises a processor for verifying the state and for executing the second part of the program code if the verification of the state indicates that this is authorized; and a first interface for communication with the processor external to the media package. The processing device further comprises a second interface adapted to interact with a state change device in order to set the state from a first state not authorizing execution of second part of the program code to a second state authorizing execution of second part of the program code. The second interface is a Radio Frequency interface adapted to, when the media package is in the first state, interact with at least one anti-theft portal. Also provided is a system.

Media package, system comprising a media package and method of executing program code

A secure pre-recorded medium and a method for descrambling encrypted content thereon. When a player wants to access the content, a secure processor on the medium verifies that the player has not been revoked, preferably by comparing an identity of the player with identities in a revocation list, after which a mutual authentication is performed. The secure processor then verifies that the player has the rights to access the content and provides the player with the key necessary to descramble the content, whereafter the player descrambles the content.

Secure pre-recorded digital medium

Growing community of inventors

Liffre, France

Eric Diehl