Abstract: A vessel for storing an object, comprising an electrically insulating container, intended to contain the object and an electrically conductive layer, arranged on a surface of the container. There is a control circuit including an electrically conductive detection element, electrically insulated from the conductive layer and capacitively coupled to the conductive layer. The control circuit is configured to measure the capacitance formed between the conductive layer and an electrically charged object brought close to the conductive layer and to generate a control signal dependent on the measured capacitance.

Abstract: A device for indicating the filling level of a container, including: a first mobile element located inside of the container and capable of moving along a wall of the container when the filling level of the container varies; an enclosure containing a liquid or a gel, located outside of the container on the side of said wall opposite to the first element; and a second mobile element located inside of the enclosure and plunged into said liquid or gel, the second element being magnetically coupled to the first element and being capable of moving in the enclosure along said wall by following the displacements of the first element.

Abstract: The invention relates to a receptacle for storage of an object, containing a proximity sensor capable of detecting an action by a user close to or in contact with a surface of the receptacle, a transducer and a control circuit comprising an input coupled to the proximity sensor and an output connected to the transducer, the control circuit being configured to generate a control signal to be sent to the transducer when a user action is detected by the proximity sensor, characterized in that it also comprises an unpacking detector coupled to the control circuit and in that the control circuit is also configured to changeover from a standby mode during which it periodically awakens to query the unpacking detector, to a detection mode during which it periodically checks the state of its input coupled to the proximity sensor, after the unpacking detector has detected removal of the receptacle from a packaging.

Abstract: A transducer for transducing time-related temperature variations into a difference in potentials includes an upper conductive electrode designed to be exposed to a time-related temperature variation to be measured, a lower conductive electrode, and at least one layer of pyroelectric material based on a III-V nitride directly interposed between the upper and lower conductive electrodes to generate, between the upper and lower conductive electrodes, a difference in potentials corresponding to the temperature variation even in the absence of external mechanical stress.

Abstract: A method for calibrating an electronic chip comprises: the placing of a calibration transducer of a chip to be calibrated in contact with a first element and the measurement of a corresponding temperature variation ?Tc with this calibration transducer, the calibration thermal transducer having thermal characteristics different from those of the normal transducer so as to measure a temperature variation ?Tc that is different from a variation ?T1 measured by the normal transducer, and the calibration of the chip to be calibrated on the basis of the measured variations ?T1 and ?Tc.

Abstract: A multiplier circuit for a voltage Vdc applied to a first input of the circuit, comprising: a first capacitor and a second capacitor; a coupler that in a first state, can electrically couple a first terminal of each capacitor to a zero electrical potential and a second terminal of each capacitor to an electrical potential equal to Vdc, and in a second state can electrically couple the first terminal of the first capacitor to the electrical potential Vdc, the second terminal of the second capacitor to the zero electrical potential, the second terminal of the first capacitor to a first output terminal and the first terminal of the second capacitor to a second output terminal; a controller capable of controlling the change from one state to another.

Abstract: This method for acquiring an angle of rotation and the coordinates of a centre of rotation, comprises: the selection (68, 84) in a first image of N different groups Gi of pixels, these groups Gi of pixels being aligned along one and the same alignment axis and each group Gi being associated with a respective ordinate xi along this axis, for each group Gi, the computation (72) of a displacement yi of the group Gi between the first and second images in a direction perpendicular to the alignment axis, the computation (86) of the angle of rotation and of the coordinates of the centre of rotation on the basis of the coefficients “a” and “b” of a linear regression line which minimizes the following relation: ? i = 1 i = N ? ? y i - ax i - b ? where N is a whole number of groups Gi, N being greater than or equal to three.

Abstract: This method for calibrating an electronic chip comprises: the placing of a calibration transducer of a chip to be calibrated in contact (144) with a first element and the measurement of a corresponding temperature variation ?Tc with this calibration transducer, the calibration thermal transducer having thermal characteristics different from those of the normal transducer so as to measure a temperature variation ?Tc that is different from a variation ?T1 measured by the normal transducer, and the calibration (154, 156) of the chip to be calibrated on the basis of the measured variations ?T1 and ?Tc.

Abstract: A transducer for transducing time-related temperature variations into a difference in potentials includes an upper conductive electrode designed to be exposed to a time-related temperature variation to be measured, a lower conductive electrode, and at least one layer of pyroelectric material based on a III-V nitride directly interposed between the upper and lower conductive electrodes to generate, between the upper and lower conductive electrodes, a difference in potentials corresponding to the temperature variation even in the absence of external mechanical stress.

Abstract: A biometric sensing device includes a sensor manufacture for sensing a biometric stimulus. The sensor manufacture includes a transitional segment between a side wall and an upper plateau. The transitional segment reduces deformation of a swiped finger, providing a tolerance in the positioning of the sensor device relative to a swiping platform.

Abstract: Sets of biometric data related to different types of physical stimuli, e.g., a scanning of a fingerprint and a swiping of a fingerprint, can be compared and a transfer function can be generated based on the comparison.

Abstract: A variable resolution biometric sensing device includes a sensor manufacture for sensing a biometric stimulus. The sensor device is configured to output data having a resolution selected from among at least two selectable output resolutions.

Abstract: Systems and methods for a biometric control device. Actuation of a control device can include direction information which can be used to generate a control signal associated with the actuation. Control signals can facilitate user functions on a recipient device.

Abstract: The disclosure herein relates to biometric sensor device security. The biometric integrity of a stimulus; e.g., a finger, that is applied to a biometric sensor can be verified by the biometric sensor. Biometric data related to the stimulus can then be received from the biometric sensor. In order to be more resistant to spoofing techniques, the biometric sensor can monitor for an application continuity of the stimulus during the verifying and receiving steps.

Abstract: The invention relates to person authentication systems. The invention proposes incorporating on a chip card intended to be used in a conventional card reader a sensor for spectral information relating to the skin of the person holding the chip card between his thumb and index finger. Spectral recognition uses light-emitting diodes and photodiodes mounted on a flexible substrate comprising interconnecting tracks between the light-emitting diodes and photodiodes on the one hand, and a processor contained in the chip of the chip card on the other hand.

Abstract: Biometric data can be received from a biometric sensor responsive to a physical characteristic stimulus occurring during a sensing event. An incremental recognition process on the biometric data received can be executed prior to the termination of the sensing event.

Abstract: State data in a sensor device is generated based on data that defines sensor operating states. The state data is monitored to determine if the sensor device is operating in a predetermined operating state.

Abstract: A biometric sensing device includes a sensor manufacture for sensing a biometric stimulus. The sensor manufacture is also configured to persistently store data electronically, such as security data.

Abstract: A biometric sensing device includes a sensor manufacture for sensing a biometric stimulus. The sensor manufacture is also configured to persistently store data electronically, such as security data.

Abstract: According to the invention, the sequence is produced from a fingerprint sensor and an analog-to-digital converter. The random binary sequence is produced from low order bits from the converter. Said sensor comprises a matrix of preferably pyroelectric detectors. The order of the bits is scrambled by a reorganization circuit, and means are provided for balancing the distribution of 0 and 1 bits in the sequence produced.