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 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: A secure system-on-chip for processing data, the system-on-chip comprising at least a central processing unit (CPU), an input and an output channel, an encryption/decryption engine and a memory, wherein, said input channel comprises an input encryption module to encrypt all incoming data, said output channel comprising an output decryption module to decrypt all outgoing data, said CPU receiving the encrypted data from the input encryption module and storing them in the memory, and while processing the stored data, said CPU reading the stored data from the memory, requesting decryption of same in the encryption/decryption engine, processing the data and requesting encryption of the result by the encryption/decryption engine and storing the encrypted result, outputting the result to the output decryption module for decryption purpose and exiting the decrypted result via the output channel.

Abstract: The aim of the present invention is to provide a secure system-on-chip for processing data, this system-on-chip comprising at least a central processing unit, an input and an output channel, an encryption/decryption engine and a memory, characterized in that, said input channel comprises an input encryption module to encrypt all incoming data, said output channel comprising an output decryption module to decrypt all outgoing data, said central processing unit receiving the encrypted data from the input encryption module and storing them in the memory, and while processing the stored data, said central processing unit reading the stored data from the memory, requesting decryption of same in the encryption/decryption engine, processing the data and requesting encryption of the result by the encryption/decryption engine and storing the encrypted result, outputting the result to the output decryption module for decryption purpose and exiting the decrypted result via the output channel.

Abstract: The aim of the present invention is to provide a secure system-on-chip for processing data, this system-on-chip having at least a central processing unit, an input and an output channel, an encryption/decryption engine and a memory. The system-on-chip having real-time working conditions while receiving and sending data, having an autonomous supervision module which is preprogrammed with normal working conditions definitions of at least the input and/or output data flow to enable or disable the input/output channel according to the comparison on the real-time working conditions and the normal working conditions definitions.

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: 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: A method for controlling access to a plurality of channels by a unit comprising a security module, each channel being encrypted by a specific control word and having a channel identifier, this method comprising the steps of: tuning to a first channel having first channel identifier and receiving first messages containing a first control word; decrypting the first messages and using the first control word; storing the first control word and the first channel identifier; tuning to a second channel having second channel identifier; calculating the second control word by: calculating a root control word with an inverse cryptographic function F?1 using the first control word and the first channel identifier; calculating the second control word with the cryptographic function F using the root control word and the second channel identifier; and using the second control word to access the second channel.

Abstract: In a pay television system, the choice and the confirmation of an impulse purchase are performed by the user on presentation, by means of a screen, of a grid of programmes. The selection by this user of a particular programme of his choice from the grid is subsequently confirmed in the system by an entitlement management message, this message being specific to an impulse purchase. In order to authorize the immediate screening of the selected transmission, the entitlement management message specific to an impulse purchase is contained in the data tied to the presentation of the grid.

Abstract: At the moment of the diffusion of Pay-TV with multi-channel signals, each channel is associated to authorization messages (ECM) which allow to decrypt this channel according to the rights of the subscriber. When changing channel, a very short time is accepted before one has determined these new rights in relation with the new channel. The heavy encrypting algorithms are thus excluded. To avoid this drawback, to decrypt a channel, a system is proposed using the combination of the authorization information for a channel (ECM), and thus encrypted by a fast algorithm, with authorization information (MECM) for a group of channels. These latter are encrypted by a high security algorithm and are thus slower to decrypt.

Abstract: System for controlling the transmission of information between a receiver and a security module, especially for a pay television system, in which the transmitted information is encrypted and decrypted by means of a unique encryption key stored, on the one hand, in the receiver and, on the other hand, in the security module.

Abstract: Controlling access to a sports facility with a user-carried non-transferable data storage medium which stores access privilege data and is read by a reading mechanism upon entry to the sports facility. A data storage medium, located on the user's sports equipment near the ground, stores control data, which is read by an antenna located near the ground at the entrance to the sports facility. The access privilege data, read from the non-transferable data storage medium upon entry, is combined by program logic with the control data read by the near-ground data storage medium on entry and then memorized. Upon each subsequent entry, the access privilege data from the non-transferable data storage medium and the control data from the near-ground data storage medium are re-read by the antenna. If there is a mismatch of the memorized combined data, entrance to the sports facility is prohibited.

Abstract: The aim of this invention is to propose a flexible solution to the risk represented by the interception of data by an unauthorized party during the transmission of said data between a broadcast center and a specialized decryption/decompression circuit such as is used in a Pay-TV decoder. This aim is achieved by a data transmission method involving a broadcast center or diffusion center, a management center and a multimedia unit, the latter comprising at least one unique key and a security module having a transport key.

Abstract: The aim of this invention is to improve in an optimal way the security of smart cards to prevent the fraudulent control of a cryptographic processor(s) by means of external signals that interfere with the normal development of the tasks of a processor(s).

Abstract: The aim of the present invention is to provide a secure system-on-chip for processing data, this system-on-chip comprising at least a central processing unit, an input and an output channel, an encryption/decryption engine and a memory, said system-on-chip having real-time working conditions while receiving and sending data, wherein it comprises an autonomous supervision module which is preprogrammed with normal working conditions definitions of at least the input and/or output data flow, and means to enable or disable the input and/or output channel according to the comparison on the real-time working conditions and the normal working conditions definitions.

Abstract: The present invention aims at minimising the impact of an attack on the reloading of the credit into a security module connected to a Pay-TV decoder. The solution to this problem resides in a prepaid access control method to television products broadcasted in a data stream to a Pay-TV decoder linked to a security module having a credit, this method comprising the following steps: receiving of a security message (ECM) comprising a temporary key (CW) allowing the decryption of at least a part of the data stream, verifying access to said data on the basis of the rights contained in the security module, if the verification is positive, verifying of a counter a temporary keys sent to the decoder and determining if a limit has been reached, transmitting the temporary key if the limit is not reached and updating the temporary key counter.

Abstract: The aim of the present invention is to provide a secure system-on-chip for processing data, this system-on-chip comprising at least a central processing unit, an input and an output channel, an encryption/decryption engine and a memory, characterized in that, said input channel comprises an input encryption module to encrypt all incoming data, said output channel comprising an output decryption module to decrypt all outgoing data, said central processing unit receiving the encrypted data from the input encryption module and storing them in the memory, and while processing the stored data, said central processing unit reading the stored data from the memory, requesting decryption of same in the encryption/decryption engine, processing the data and requesting encryption of the result by the encryption/decryption engine and storing the encrypted result, outputting the result to the output decryption module for decryption purpose and exiting the decrypted result via the output channel.