Abstract: The device for protecting a connector comprising two mutually engageable connector elements itself comprises for each connector element, a resilient tubular sleeve having one end configured to be fastened to a respective connector element by surrounding it in leaktight manner, and having a length at rest that is sufficient for it to be cantilevered out beyond one end of the connector element carrying the resilient sleeve, the cantilevered-out end including spring blades for flattening the sleeve and holding the corresponding lips pressed resiliently one against the other.

Abstract: The inertial sensor comprises a piezoelectric plate having a vibrator member defined therein carrying excitation electrodes connected to an excitation circuit including conductor tracks carried by the piezoelectric plate the excitation circuit including a disturbing circuit portion in which the excitation circuit has compensation branches associated with corresponding disturbing conductor track portions, each compensation branch having one end connected to the corresponding disturbing conductor track portion and extending on a side of the midplane that is opposite from the side on which the corresponding disturbing conductor track portion extends.

Abstract: The present invention concerns a selective connection device allowing the connection of at least one peripheral to a target computer and a selective control system comprising such a device. It relates in particular to the field of devices for the selective connection of a control device composed of input/output peripherals to various target computers. More particularly, the invention concerns such a device affording security guarantees by preventing communication between the various target computers that may be controlled. This device makes it possible to connect at least one computer peripheral selectively to a target computer among a plurality of target computers. The connections between the peripheral and the target computer are connections made physically unidirectional. In the case where information input peripherals and information output peripherals are to be connected to the target computer, two unidirectional selection devices in opposite directions are used.

Abstract: A cryptographic calculation is carried out in an electronic component according to a specific cryptographic algorithm including at least one specified non-linear operation on blocks of data of k bits, k being a whole number of more than 2. Several blocks of masked intermediate data of j bits (b?m1,c?m2, ??n) are generated from an initial block of data of k bits (a), j being a whole number that is smaller than k. Then a non-linear operation S is applied to at least one of the masked intermediate data blocks of j bits (??n) with the aid of a substitution table (106) with 2 inputs producing a modified data block of j bits (S(?)?n?). The modified data block of j bits and some, at least the masked intermediate data blocks of j bits are combined to form a result block of k bits (a?) corresponding to the initial data block of k bits by means of a transformation including the specified non linear operation.

Abstract: The invention relates to an actuating device comprising at least two coaxial bimetal disks and at least one axial strut arranged between the disks, the bimetal disks being mounted opposite each other and being deformable in opposite directions according to the thermal variations. The invention can be especially applied to the thermal compensation of an optical system.

Abstract: In the orientation device of a transmission assembly for orienting at least one beam in elevation and/or in bearing, said assembly pivots on a fork about an elevation axis and is driven about this axis by a motor supported by said fork, which fork can pivot on a base about a bearing axis, perpendicular to the elevation axis and driven about this axis by a second motor supported by said base, and at least one of the motors is a travelling-wave piezoelectric rotary motor.

Abstract: A digital fingerprint recognition method providing the steps of activating an image distortion software program on a computer, displaying a digital fingerprint image on a screen of the computer in a presentation environment for the image distortion software, and distorting the digital fingerprint image so as to correct a fault in the fingerprint detected on the digital fingerprint image. The computer system having a man/machine interface, a processing unit that is used to analyze a digital fingerprint image, coupler for accessing one or more files containing at least one digital fingerprint image and an image distortion software program that is used to display a digital fingerprint image on the man/machine interface and to distort the digital fingerprint image by the man/machine interface.

Abstract: The invention concerns gyrometric measurement compensated as a function of the instantaneous internal temperature of a mechanical resonator in a gyrometric measurement device comprising a loop controlling the amplitude of the resonator vibration and a gyrometric loop delivering a gyrometric signal (S); the gain control (P) of the loop varies as a monotonous function, preferably increasing and of the first order, of the internal temperature of the resonator in a given range of temperature; during a calibrating step, a correspondence is established and stored between the values of the gyrometric scaling factor (Fe) and the gyrometric bias (So) and the values of the gain control signal (P), that is F(P) and Q(P) respectively; in operation, the following operations are carried out: P?F(P), P?Q(P), and ??est=F(P)·S+Q(P) which is a more precise analog estimate, compensated as a function of the internal temperature of the resonator, of the mechanical rotation of the sensitive axis of the resonator.

Abstract: Method of identifying an infrared matrix sensor, characterized in that, for at least some of the pixels of the sensor matrix, information concerning the position of the pixel in the matrix is recorded and information concerning at least one characteristic of each of the pixels is determined, and in that all of these pairs of information associated with the respective pixels (or mapping) are kept in memory as sensor identifier information.

Abstract: A thermal accelerometer comprising two detector strands having resistivity that is temperature sensitive, a detector member for detecting a temperature difference between the detector strands, a feedback member for establishing temperature equilibrium between the detector strands by supplying the detector strands with pulse feedback signals of variable width, a member for calculating acceleration, and a multiplexer member connected to the detector strands, to the detector member, and to the feedback member so as to perform the following in alternation: measuring the temperature difference between the detector strands; and providing the detector strands with the feedback signals, the widths of the pulse signals being determined by comparing a sawtooth signal with DC signals representative of the temperature difference between the detector strands.

Abstract: The invention concerns a method for improving determination of inertial navigation parameters (1) of a carrier (1) moving along modelizable kinematic movement components, the method including the following steps: (a) selecting, taking into account a kinematic model (13) of the carrier (1), at least one movement component whereby integration (11) of the inertial measurements (20) is assumed to give a predetermined value, (b) integrating (11) the inertial measurements (20) in accordance with the selected component(s), (c) determining (14) based on the component(s) a variation between the integration (11) obtained at step (b) and the predetermined value of step (a), (d) estimating on the basis of the variation(s) thus obtained a global inertial error resulting from internal errors associated with said modelizable components, and values to be updated of variable parameters of the kinematic model (13), (e) correcting said inertial navigation based on the thus determined global inertial error.

Abstract: The invention concerns an electromechanical actuator comprising at least an electric motor (1), as well as coupling (4) and gear reduction (4) means, which drive an output shaft (11). The invention is characterized in that the coupling and gear reduction means mesh with a crank plate (7) designed to be driven in rotation with an angular travel limited by two stops, a small connecting rod (9) being articulated to one end on a crank pin (8) of said crank plate and being articulated at its other end on a long connecting rod (10) which is itself integral with the output shaft, the two ends of said long connecting rod being respectively guided in displacement each along a guide, and the displacement angle between said two stops is more than 180°, the movements of the rod being structurally locked in case of overriding, the crank plate being immediately proximate to one of its travel limit stops.

Abstract: A user positioning device comprising a stand (1) carrying two positioning markers (5) that are disposed so that each can be seen by a respective one of the eyes of a user, when the user is positioned correctly, and means (7) for forming a light path between each of the eyes of the user and the corresponding positioning marker, the light paths being optically separate from each other relative to the eyes of the user.

Abstract: A method includes transmitting a first digital channel (X0) from a reader to a marker, receiving a second digital channel (Y0) corresponding to the first digital channel and to errors introduced by a noisy channel, introducing artificial errors into at least one of the first or second digital channels, carrying out an advantage distillation phase in such a way that a new first digital channel (X1) is determined for the reader. A new second digital channel (Y1) is determined for the marker such that the advantage is taken with respect to a possible passive attacker. In an information reconciliation phase, an error-correcting protocol is applied to the new first (X2) and new second (Y2) digital channel, and in carrying out a secrecy amplification phase, a hash function (G) is applied to the new first (X2*) and the new second (Y2*) digital channel.

Abstract: The invention relates to a method for providing a secured communication between a user and an entity containing a first set of biometric data relating to the user. According to the invention, a second set of biometric data relating to the user is obtained. An error correction protocol is applied to the first set of biometric data and to the second set of biometric data in such a way that the resulting data is identical to a pre-determined level of probability. A secret amplification phase is implemented, in which a hasting function is applied to the resulting data in order to obtain a key which is common to the user and the entity.

Abstract: Device with integrated electronic components, that comprises a board forming a support for the said components, a cover mounted on the said board to cover the said components, and a separating partition which extends from the cover to the board substantially perpendicularly to the latter, the said partition separating two distinct zones of the board, wherein it comprises an overcover covering the cover and defining an internal space between the cover and the overcover in which are provided cooling gas division means delimiting two distinct secondary spaces in the internal space, an upstream secondary space into which cooling gas is able to be injected and a downstream secondary space into which cooling gas is able to be discharged so that cooling gas injected into the upstream zone of the board is directed toward the downstream secondary space of the internal space and that cooling gas injected into the upstream secondary space of the internal space is directed toward the downstream zone of the board.

Abstract: A method and system of controlling the locking/unlocking of the network access functions of a terminal including a security processor, like a mobile telephone handset. The terminal is allotted an original public key for verifying the integrity of data loaded into the terminal, a pair of keys associated with the network being generated along with an original approval certificate for the terminal, a locking certificate containing the original approval certificate, the public keys, configuration data and random data, this locking certificate being signed on the basis of the private key associated with the original public key and loaded into the terminal. On entering a user code, the terminal or a function thereof is unlocked after verification of the integrity of the locking certificate and validation of the user code entered.

Abstract: The invention relates to a sheet-fed scanner (300) comprising: an illumination device for emitting a luminous flux covering several spectral bands which is intended to illuminate a sheet (204) to be scanned, a focussing device (150), and a detection module (360) comprising a sensor (164) which comprises a plurality of rows (166, 168, 170) of sensitive elements, each sensitive element being provided to deliver an electrical energy that is proportional to the intensity of the luminous flux received, and each row being provided to have its sensitivity peak for one of said spectral bands, the focussing device being provided to focus, onto each of the rows, part of the luminous flux reflected by said sheet, the sheet-fed scanner (300) being characterised in that the detection module (360) comprises a non-prismatic spectral shift device (305) for shifting each part of the luminous flux thus focussed, parallel to said rows (166, 168, 170), the shift being different for each row (166, 168, 170).

Abstract: An optical device for biometric sensing by contact, comprising: an optical element (2) having a face (3) constituting a surface for apposition of a body part from which a biometric characteristic is to be sensed; a radiation source (6) for illuminating the face (3) of the optical element; and sensor means (9) for picking up the radiation coming from the face (3); the face (3) is coated in a thin layer defining a pattern and made of a material such that in association with the material constituting the optical element, the layer is transparent in the presence of radiation emitted by the radiation source (6) when a body part is placed on the face (3) and is significantly less transparent in the presence of external parasitic radiation (13) that is inclined relative to the face (3); whereby the image received by the sensor means can be distinguished depending on whether it is real or latent.

Abstract: In an RF label identification system comprising a label reader and a plurality of labels, a unique and secret identifier being associated with each label, a first random number is sent from a label to the reader. A second random number is then sent from the reader to the label. In the RF label, a value of the encrypted identifier is then obtained by generating third and fourth random numbers in accordance with a probabilistic rule, by transforming the first and second random numbers in accordance with a determined function and by combining the identifier with the first and second random numbers, with the first and second transformed numbers and with the third and fourth random numbers. The value of the encrypted identifier is sent to the reader. After N repetitions of the above process, the reader identifies the RF label as a function of the N values of the encrypted identifier received, of the determined function, of the N first and second random numbers and of the probabilistic rule.