Abstract: A method to optimize reception of entitlement management messages in a subscriber unit that is part of a Pay-TV system. The subscriber units are set up to a default reception channel for receiving default entitlement management messages such as the ones addressed to all or a group of subscriber units controlled by the management system. When one or a plurality of operating parameters of a specific subscriber unit needs to be modified, the security module sends an information signal to the subscriber unit which switches to a specific reception channel. In this case only specific entitlement management messages, also called positive addressing entitlement management messages, are received for performing the operating parameters modification of the concerned subscriber units. Once the modification is executed, the subscriber unit switches back to the default reception channel to be ready for receiving default entitlement management messages again.

Abstract: The aim of the invention is to provide a solution to ensure that the content sent by the IRD is the content effectively displayed on the screen. It is then proposed a system to prevent manipulation of transmitted video data comprising an Integrated Receiver Decoder (IRD) receiving audio/video data, a display device (TV), said IRD comprising means to transmit an HDMI compliant audio/video data stream toward the display device. This system comprising: means to define a variable area at a location of the image displayed on the display device, means to store reference data corresponding to video data of said area which are sent to the display device.

Abstract: A system and method give a user control of personal data. A trusted center comprises a database for personal data, access conditions for the personal data, and a counter. A user loads personal data into the database and assigns access conditions to said data. The personal data is divided into at least two categories, each associated with a user's value. A third party requests access to personal data of a plurality of users, the request comprising search criteria. The trusted center identifies a first set of users matching the search criteria and returns the quantity of users in, and a sum of user's values for, the first set. The third party acknowledges all or part of the sum, and the trusted center returns the personal data of a second set of users for which the sum covers the user's values and updates the counters of user in the second set.

Abstract: A method for sharing data and synchronizing broadcast data with additional information, the broadcast data and the additional information being provided by at least two distinct sources to a multimedia device. The method comprises steps of: receiving by a data extractor associated to the multimedia device broadcast data from a first source and extracting first metadata from the broadcast data, accessing by the multimedia device to additional information provided by a second source by using the first metadata and obtaining from the additional information second metadata and additional content data related to a content of the broadcast data, merging and synchronizing, by the multimedia device, the second metadata and the additional content data with the content of the broadcast data, and obtaining modified broadcast data.

Abstract: An air/fuel mixer system of a combustion chamber of a gas turbine includes at least one compressed air intake swirler, the swirler having a central axis of symmetry, and a fuel injector including an injection head having an axis of symmetry. Each injector is mounted in the corresponding swirler with aid of a guide mechanism, so that the axis of symmetry of the injection head is off-center with respect to the central axis of symmetry of the swirler. The system can reduce, or even eliminate, combustion instabilities, by injecting the fuel along a particular axis which is off-center relative to the axis of the air/fuel mixer system, inducing a flow of fuel which is no longer perfectly axially symmetrical.

Abstract: The present invention aims to address the issue of deploying costly hardware by proposing a content protection layer with an easy distribution capability to clients. The aim is achieved by an network device for descrambling an access controlled audio/video content stream, said network device being configured to be connected to a network router comprises a memory to store a unique address UA specific to the network device, an network input/output interface, a descrambler to descramble the audio/video content stream, and a watermark engine configured to watermark the descrambled audio/video content stream by applying the unique address. A further object of the invention is a method to access scrambled audio/video content stream in a local or roaming mode by a multimedia reception device connected via an IP network to a network router having an IP port connected to the network device.

Abstract: A method to optimize reception of entitlement management messages in a subscriber unit that is part of a Pay-TV system. The subscriber units are set up to a default reception channel for receiving default entitlement management messages such as the ones addressed to all or a group of subscriber units controlled by the management system. When one or a plurality of operating parameters of a specific subscriber unit needs to be modified, the security module sends an information signal to the subscriber unit which switches to a specific reception channel. In this case only specific entitlement management messages, also called positive addressing entitlement management messages, are received for performing the operating parameters modification of the concerned subscriber units. Once the modification is executed, the subscriber unit switches back to the default reception channel to be ready for receiving default entitlement management messages again.

Abstract: A utility meter and method for metering consumption of at least one utility including: a metering unit, a communication unit for sending/receiving messages to/from a management center, a memory to store a unique identifier pertaining to the utility meter and a first key, an encryption unit for encrypting the utility consumption as a first cryptogram, a message generator for generating a utility message containing the first cryptogram, a key generator for generating a payload key to be used by the encryption unit for encrypting the utility consumption, a second cryptogram generated by the encryption unit by encrypting the payload key with the first key, the second cryptogram being intended to be included, by the message generator, at least once into the utility message to be sent to the remote management center.

Abstract: The present invention relates to a system, and method for enforcing utility usage and metering functions by a utility meter associated with a utility consumer end user, connected to a remote utility management center by a communication network. The present invention proposes a utility meter for controlling and metering a least one utility consumption.

Abstract: A secure detachable utility monitoring device is disclosed, to be appended to a utility metering apparatus for controlling at least one utility usage consumption. A detachable metering monitoring device of at least one embodiment includes: a usage reading interface to acquire a utility consumption value metered by the utility meter; a first memory to store at least a unique identifier ID and a personal key, both pertaining to the device; a crypto processor to generate a cryptogram from information data comprising at least the utility consumption value, the cryptogram being encrypted with the personal key; a message generator to generate an information message including at least the cryptogram and the unique identifier ID; and a communication network interface including a sending unit to send the information message to a remote management center.

Abstract: This invention concerns a safe data exchange method between two devices locally connected to one another. In a preferred embodiment, the first device (10) is a security module containing a first encrypting key, said private key (PAKV) of a pair of asymmetric encrypting keys. The second device is a receiver (11) comprising at least one second encrypting key, said public key (PAKB) of said pair of asymmetric encrypting keys. Furthermore each of the devices comprises a symmetrical key (13). The first device (10) generates a first random number (A), which is encrypted by said private key (PAKV), then transmitted to the second device (11), in which it is decrypted by means of the public key (PAKB). The second device (11) generates a second random number (B), which is encrypted by said public key (PAKB), then transmitted to the first device (10), in which it is decrypted by means of the private key (PAKV).

Abstract: This invention concerns a safe data exchange method between two devices locally connected to one another. In a preferred embodiment, the first device is a security module containing a first encrypting key, said private key of a pair of asymmetric encrypting keys. The second device is a receiver comprising at least one second encrypting key, said public key of said pair of asymmetric encrypting keys. Furthermore each of the devices comprises a symmetrical key. The first device generates a first random number, which is encrypted by said private key, then transmitted to the second device, in which it is decrypted by means of the public key. The second device generates a second random number, which is encrypted by said public key, then transmitted to the first device, in which it is decrypted by means of the private key. A session key, used for safe data exchange, is generated by a combination of the symmetric key and the random numbers generated and received by each of the devices.

Abstract: For updating shared databases on a subscriber network, a managing center sends messages addressed to each of these bases. When one requires to address a great number of databases, the time to accede to each of them increases considerably considered the necessity to repeat the information to ensure the good reception of messages. Instead of addressing by name each database, it is proposed to transmit criteria in which a certain number of databases recognize themselves and apply a selective updating on these bases.

Abstract: In order to limit the use of generic remote control devices, the invention relates to a system comprising a remote control device and a security device, both sharing a common key, algorithms or protocol specific to a pair formed by the remote control device and the security device. The remote control device comprises means to send wirelessly data to a receiver comprising the security device. The remote control device being paired with the security device is characterized in that data sent by the remote control device towards the receiver is specific to the pair formed by the remote control device and the security device, said remote control device comprising encryption means and a memory to store a specific key, said data being encrypted by the encryption means with the specific key, the security device comprising decryption means and a key corresponding to the specific key to decrypt the received data.

Abstract: The present invention provides a means and an apparatus for watermarking a digital signal. A particular content which is to be made available by a content provider to potential content users is prepared by encoding the content into a plurality of encoded streams, each encoded stream being encoded according to a different bit-rate. Each encoded stream comprises a plurality of chunks and each chunk is retrievable by a requestor of content. Upon request of said content by a user, the plurality of chunks making up the content are selected from the plurality of the different encoded streams and a subset from that plurality of chunks is watermarked using a unique identifying parameter associated with the requestor.

Abstract: A method for sharing data and synchronizing broadcast data with additional information, the broadcast data and the additional information being provided by at least two distinct sources to a multimedia device. The method comprises steps of: receiving by a data extractor associated to the multimedia device broadcast data from a first source and extracting first metadata from the broadcast data, accessing by the multimedia device to additional information provided by a second source by using the first metadata and obtaining from the additional information second metadata and additional content data related to a content of the broadcast data, merging and synchronizing, by the multimedia device, the second metadata and the additional content data with the content of the broadcast data, and obtaining modified broadcast data.

Abstract: The aim of the invention is to provide a solution to ensure that the content sent by the IRD is the content effectively displayed on the screen. It is then proposed a system to prevent manipulation of transmitted video data comprising an Integrated Receiver Decoder (IRD) receiving audio/video data, a display device (TV), said IRD comprising means to transmit an HDMI compliant audio/video data stream toward the display device. This system comprising: means to define a variable area at a location of the image displayed on the display device, means to store reference data corresponding to video data of said area which are sent to the display device.

Abstract: The aim of the invention is to provide a solution to ensure that the content sent by the IRD is the content effectively displayed on the screen. It is then proposed a system to prevent manipulation of transmitted video data comprising an Integrated Receiver Decoder (IRD) receiving audio/video data, a display device (TV), said IRD comprising means to transmit an HDMI compliant audio/video stream toward the display device, characterized in that the system further comprises means to add an over-encryption layer to said HDMI/HDCP stream before reaching the display device and means to remove this added encryption layer so as to recover said HDMI/HDCP stream, before processing said HDMI/HDCP stream by said display device.

Abstract: A multifunction device for television set and a method to enhance video content provided to a display device of said television set. The multifunction device comprises an input for receiving audio/video data from an audio/video content data source, an output for outputting audio/video data to the display device, and communication means for accessing Internet or a local area network for collecting additional data. The multifunction device being connected and powered by a common interface of the display device further comprises image processing means configured for receiving first image data from the input, a converter configured for receiving additional data from Internet or a local area network and for converting said additional data into additional image data, an image merging module configured for combining said additional image data with all or part of the input first image data to obtain second image data to be forwarded to the output connected to the display device.

Abstract: The objective of the present invention is to propose a method to prevent that the decryption of a keys file of a group of data stored in a storing unit (DB) of a decoder (STB), the latter comprising a security module (SM), allows many bad intentioned users to benefit illegally from this product. This method consists in extracting from an encrypted data flux the data to send towards the storing unit (DB) and to re-encrypt the data before transferring them to the storing unit (DB) by at least one specific key (K1, K2).