Abstract: The invention relates to a device for transmitting an ultra-wideband-type signal, the signal including, one after the other temporally, a synchronization header and a data payload field. The transmission device includes a first generator to generate first synchronization header symbols and a third generator to generate third data payload symbols. The transmission device further includes a time sequencing device for sequencing the first and third symbols in a sequence of symbols, successively including the first symbols in the synchronization header and the third symbols in the data payload field. The transmission device further includes at least one antenna, capable of transmitting the signal including the sequence. The transmission device additionally includes a fourth generator to generate at least one fourth secret symbol, the time sequencing device being configured to insert the at least one fourth secret symbol into the sequence of symbols.

Abstract: The invention relates to a relative localization device comprising at least three nodes separated from each other. The node (A) being able to: trigger a round-trip message exchange (M1, M2) with a node (B); calculate a travel time (Tab) of the message (M1, M2); and emit a message (M5) containing an information (INF1) indicating the travel time (Tab). The node (C) being able to: trigger an exchange of messages (M3, M4) with node A for calculation of a travel time (Tac) of the message (M3, M4); receive the messages (M1, M2, M5); measure receive times (T1, T2) of the messages (M1, M2); and calculate a travel time (Tbc) of the message (M2) from the node (B) to the node (C) from the times (T1, T2), the time (Tac) and the information (INF1), contained in the message (M5).

Abstract: The present invention relates to a system for locating a mobile element, characterized in that it comprises: at least one beacon emitting radio messages; at least one relay capable of emitting a second message with a known lag following the receipt of a first message originating from said at least one beacon; at least one sensor capable of measuring in a local time base the instants of arrival of the messages originating from said at least one beacon and at least one relay; at least one position computer, that can be central or onboard each sensor, capable of determining the position of a mobile element on the basis of the arrival time information; the mobile element being able to be a beacon, a relay or a sensor.

Abstract: The invention relates to a device for transmitting an ultra-wideband-type signal, the signal including, one after the other temporally, a synchronization header and a data payload field. The transmission device includes a first generator to generate first synchronization header symbols and a third generator to generate third data payload symbols. The transmission device further includes a time sequencing device for sequencing the first and third symbols in a sequence of symbols, successively including the first symbols in the synchronization header and the third symbols in the data payload field. The transmission device further includes at least one antenna, capable of transmitting the signal ncluding the sequence. The transmission device additionally includes a fourth generator to generate at least one fourth secret symbol, the time sequencing device being configured to insert the at least one fourth secret symbol into the sequence of symbols.

Abstract: The invention concerns a device for detecting the handling of at least one object, the device including a deformable enclosure, to which are attached at least one sensor for the detection of a grasping of objects and at least one wireless radio transmitter, the sensor being able to provide either one from among a first signal for detection of the grasping of an object and a second signal for detection of the absence of grasping of an object. The invention is characterized in that the transmitter includes first means for wireless radio transmission of a third signal, allowing determination of a localization of the enclosure towards a receiver remote from the deformable enclosure, as well as second means for wireless radio transmission of the first or second signal towards said receiver.

Abstract: The invention relates to a device for controlling access to a machine, comprising a portable object having a signal transmission member and a device for locking and unlocking a machine. The member for controlling the device is capable of triggering, once the second transceiver of the device has received the signal, the transmission of a signal to a wireless radio receiver supported by the portable object, and comprises a control member for triggering, when the wireless radio receiver has received the second signal, the transmission of a signal, the control member being connected to a calculator member for computing a distance between the portable object and the device using the signals, the portable object comprising a member for independently powering the transmission member, the receiver and the control member thereof.

Abstract: A device for locating a remote RFID transmitter in an environment providing separate paths of propagation of a wirelessly transmitted ultra-wide band signal. The receiver of the device has a module for estimating the impulse response of the plurality of paths of the first channel defined by a first antenna and a module for estimating the impulse response of the plurality of paths of the second channel defined by the second antenna, a module for calculating a plurality of argument differences between each component of the impulse response and each component of the impulse response for the plurality of paths respectively. The device further comprises a module for converting the plurality of argument differences into a plurality of arrival angles of the plurality of paths, a module for determining a location of the transmitter from the plurality of arrival angles.

Abstract: The present invention relates to a system for locating a mobile element, characterized in that it comprises: at least one beacon emitting radio messages; at least one relay capable of emitting a second message with a known lag following the receipt of a first message originating from said at least one beacon; at least one sensor capable of measuring in a local time base the instants of arrival of the messages originating from said at least one beacon and at least one relay; at least one position computer, that can be central or onboard each sensor, capable of determining the position of a mobile element on the basis of the arrival time information; the mobile element being able to be a beacon, a relay or a sensor.

Abstract: The invention relates to a wireless information communicating terminal, comprising a facility for providing a first item of information to the outside, a first receiver able to receive a first signal containing first data according to a first wireless determined communication channel, a control unit for generating the first item of information to be dispatched to the providing facility as a function of the first data received by the first receiver. The invention is characterized in that the terminal furthermore comprises at least one second sender able to send a second signal according to a second wireless determined communication channel of ultra-wide band type.

Abstract: The invention relates to a device for controlling access to a machine, comprising a portable object having a signal transmission member and a device for locking and unlocking a machine. The member for controlling the device is capable of triggering, once the second transceiver of the device has received the signal, the transmission of a signal to a wireless radio receiver supported by the portable object, and comprises a control member for triggering, when the wireless radio receiver has received the second signal, the transmission of a signal, the control member being connected to a calculator member for computing a distance between the portable object and the device using the signals, the portable object comprising a member for independently powering the transmission member, the receiver and the control member thereof.

Abstract: The invention concerns a device for detecting the handling of at least one object, the device including a deformable enclosure, to which are attached at least one sensor for the detection of a grasping of objects and at least one wireless radio transmitter, the sensor being able to provide either one from among a first signal for detection of the grasping of an object and a second signal for detection of the absence of grasping of an object. The invention is characterized in that the transmitter includes first means for wireless radio transmission of a third signal, allowing determination of a localization of the enclosure towards a receiver remote from the deformable enclosure, as well as second means for wireless radio transmission of the first or second signal towards said receiver.

Abstract: A device for locating a remote RFID transmitter in an environment providing separate paths of propagation of a wirelessly transmitted ultra-wide band signal. The receiver of the device has a module for estimating the impulse response of the plurality of paths of the first channel defined by a first antenna and a module for estimating the impulse response of the plurality of paths of the second channel defined by the second antenna, a module for calculating a plurality of argument differences between each component of the impulse response and each component of the impulse response for the plurality of paths respectively. The device further comprises a module for converting the plurality of argument differences into a plurality of arrival angles of the plurality of paths, a module for determining a location of the transmitter from the plurality of arrival angles.

Abstract: The invention relates to a chip for processing a content, comprising at least a microprocessor. Said chip includes an integrated non-volatile programmable memory for storing protection data and protected data, said protection data being intended to be used for authorizing/denying access to said protected data by said microprocessor under execution of a program. The invention allows to protect program and data dedicated to a chip-integrated conditional-access system and to protect features as external connections and downloaded data directly on the chip.

Abstract: The invention relates to a chip for processing a content, comprising at least a microprocessor. Said chip includes an integrated non-volatile programmable memory for storing protection data and protected data, said protection data being intended to be used for authorizing/denying access to said protected data by said microprocessor under execution of a program. The invention allows to protect program and data dedicated to a chip-integrated conditional-access system and to protect features as external connections and downloaded data directly on the chip.

Abstract: The invention relates to a chip for processing a content, comprising at least a microprocessor. Said chip includes an integrated non-volatile programmable memory for storing protection data and protected data, said protection data being intended to be used for authorizing/denying access to said protected data by said microprocessor under execution of a program. The invention allows to protect program and data dedicated to a chip-integrated conditional-access system and to protect features as external connections and downloaded data directly on the chip.

Abstract: The present invention relates to a video processing device for processing data corresponding to a sequence of pictures according to a predictive block-based encoding technique. Said device comprises a processing unit (20) including a reconstruction circuit (16) for reconstructing pictures from decoded data and an external memory (1) for storing reference pictures delivered by the reconstruction circuit. The processing unit further comprises a memory controller (11) for controlling data exchange between the processing unit and the external memory, a cache memory (17) for temporarily storing data corresponding to a prediction area, said data being read out from the external memory via the memory controller, and a motion compensation circuit (14) for delivering motion compensated data to the reconstruction circuit on the basis of the prediction area read out from the cache memory.

Abstract: The invention relates to a secure data processing system including an unscrambling module [DSC] disposed on a dedicated hardware part [HW] of an integrated circuit and intended to unscramble a stream of data [SP] scrambled according to a scrambling key, a module [CM] for calculating an unscrambling key [Kp] disposed on said dedicated hardware part [HW] and intended to manipulate data under the control of a so-called calculation program stored on said dedicated hardware part [HW], a processor [CPU] for in particular controlling the functioning of the unscrambling [DSC] and calculation [CM] modules. Said system also includes a read only memory [SME] disposed on said dedicated hardware part [HW] for storing a secret key [Kp]. Said calculation program includes instructions for prompting said calculation module [CM] to use said secret key [L] and at least one data item [AC[n,p] or Kpc)] coming from outside the secure data processing system, in order to calculate an unscrambling key [Kp].

Abstract: A functional system comprises a set of functions (F) requiring access to a collective resource (RSRC). Such a system can be, for example, a data processing system comprising a plurality of processors requiring access to a collective memory. For reasons of cost it is desirable to guarantee a certain minimum access for one or more functions while a certain degree of flexibility as regards the access is maintained. For this purpose, the system comprises an interface (INT) adapted to implement an access scheme (AS) characterized by a plurality of states (S) passed through in a predetermined manner. A state (S) forms a possibility of access of a given length and defines an order of priority in accordance with which a function (F) can access the collective resource (RSRC).

Abstract: A data processing arrangement comprises a plurality of processors and a memory interface via which the processors can access a collective memory. The memory interface comprises an interface memory (SRAM) for temporarily storing data belonging to different processors. The memory interface also comprises a control circuit for controlling the interface memory in such a manner that it forms a FIFO memory for each of the different processors. This makes to possible to realize implementations at a comparatively low cost in comparison with a memory interface comprising a separate FIFO memory for each processor.

Abstract: A data processing arrangement comprises a plurality of processors. These processors share a collective memory. The arrangement comprises private buses. A private bus enables data communication exclusively between a processor and the collective memory. A memory interface provides access to the collective memory in data bursts while it produces substantially steady data streams on the private buses.