Abstract: An object includes an electro-optic display device provided with an optically active element, the optical properties thereof can be modified by applying an electric voltage or current between at least one electrode and one corresponding auxiliary electrode, between which the optically active element is disposed. The object further includes a middle part which delimits an opening closed by a crystal including a bottom surface beneath which the electro-optic display device is arranged. The crystal is provided with an opaque frame which is made remotely from the edges of the opening and which covers the contour of the electro-optic display device so as to conceal electrical connection elements. The electro-optic display device defines an active display area which is confined by the opaque frame, such that, when the electro-optic display device is activated and displaying information, a transparent area remains between the opaque frame and the edges of the opening.

Abstract: A multilayered interference pigment containing, in succession: a metal core in the form of a flake, the metal core containing a material selected from gold, silver, palladium, rhodium, ruthenium, platinum, osmium, iridium and an alloy thereof; a first layer of transparent dielectric material; and a second discontinuous metal layer making it possible to both reflect a portion of the light beam and to transmit another portion of this beam onto the metal core.

Abstract: An antenna device intended to be used in a communication system of a timepiece, including a substrate; a first antenna circuit made on the substrate and having first and second strands which are connected and having a proximal end and a distal end, extending in parallel, a second antenna circuit made on the substrate and having third and fourth strands which are connected and having a proximal end and a distal end, and extending in parallel, an electrical junction link joining the proximal ends of the first and third strands; a connection portion configured to be bent relative to the electrical junction link, and including a conductive connection which is connected to the electrical junction link and including an electromagnetic shielding of the conductive connection.

Abstract: A mechanism (1) including a magnetic gear (2) including a first wheel (6A) and a second wheel (6B), the first wheel (6A) being provided with first permanent magnetic poles (7) forming first magnetic toothing (8), the second wheel (6B) being provided with a second magnetic toothing (10) made of a ferromagnetic material, the first wheel (6A) and the second wheel (6B) being arranged such that the first magnetic toothing has a first magnetic coupling with the second magnetic toothing (10). The gear (2) has a third wheel (6C) having second permanent magnetic poles (9) which form a third magnetic toothing (12), the third wheel and the second wheel being arranged such that the third magnetic toothing has a second magnetic coupling with the second magnetic toothing; the magnetic gear (2) being arranged such that the first and third wheels are each angularly positioned in a specific manner.

Abstract: A control device (2) for controlling power supply to a continuous-rotation motor, of the horological, DC type, is arranged to generate electrical pulses with a lower supply voltage to drive the rotor. The number of pulses per time interval is a function of the load applied to the motor. A voltage divider is arranged to supply the lower supply voltage with a plurality of different values and thus the electrical pulses with a variable voltage. A logic circuit counts the numbers of electrical pulses in successive time periods; to periodically select a voltage value, from among a plurality of different values, as a function of a counted number of electrical pulses or of a succession of counted numbers of electrical pulses; and to control the voltage divider so that the latter supplies the lower supply voltage with the selected voltage value after the selection of this voltage value.

Abstract: A method for the fine adjustment of the rate of a mechanical oscillator with an oscillating inertial mass, equipped, in a first step, with an actuator made of material suitable for irreversible local micro-expansion under the action of laser fires, to impart to an inertia-block a radial travel during suitable laser fires on a writing zone of the actuator, in a second step, the initial rate of the oscillator is set and measured, in a third step, the direction and the value of the deviation required to achieve a predetermined rate range, and of the travel to be imparted to inertia-blocks are calculated, in a fourth step, a writing zone is subjected to femtosecond laser fires to create expansion lines by local molecular expansion to radially deform the actuator, in a fifth step the rate is measured and the third step and fourth step are repeated if required.

Abstract: A method for calibrating an electronic temperature sensor connected to a mobile device. The device includes a microprocessor and memory linked to the microprocessor, to store an application coupled to a data entry interface. The temperature sensor is initially placed in a plurality of predetermined environments, where it provides an initial raw temperature value measured in each environment, and, for each of these environments, a predetermined initial temperature value corresponding to the actual temperature of this environment is entered beforehand directly into the application via the interface.

Abstract: A method for surface treatment of a metal material in a powder state is provided, the method including obtaining a powder formed from a plurality of particles of the metal material to be treated; and subjecting the powder to an ion implantation process by directing a beam of singly-charged or multi-charged ions towards an outer surface of the particles, the beam being produced by a source of singly-charged or multi-charged ions, whereby the particles have an overall spherical shape with a radius (R). There is also provided a material in a powder state formed from a plurality of particles having a ceramic outer layer and a metal core, the particles having an overall spherical shape.

Abstract: A device (1000) for the winding and time-setting of a watch (1) with an oscillating resonator (2), which includes: an automatic winding mechanism (304) for a mechanical or automatic watch, which includes at least one watch reception support (305), a viewing system (1002), a stoppage monitor (500) to observe the stoppage of a resonator (2), and a controller (900) arranged to identify the stoppage time displayed by the watch (1) in the stoppage position thereof, to compute the time remaining until a synchronization between the actual time indicated by the clock (1001) and the stoppage time, and, when the remaining time has elapsed, to activate the automatic winding mechanism (304) for rewinding the power storage device of the watch (1).

Abstract: A mechanical oscillator, formed of a mechanical resonator and a device for maintaining oscillation, and an auxiliary oscillator forming a reference time base including a synchronisation device arranged to slave the medium frequency of the mechanical oscillator on that of the auxiliary oscillator. The synchronisation device includes an electromagnetic braking device which is formed of a coil and at least one permanent magnet and arranged such that an induced voltage is generated between the terminals of the coil in each alternation of the oscillation of the mechanical resonator. The synchronisation device is arranged to be able to reduce momentarily the impedance between the terminals of the coil during distinct time intervals, any two successive time intervals exhibiting between the respective starts thereof a time distance substantially equal to a positive whole number multiplied by half of a set-point period for the mechanical oscillator.

Abstract: A mechanism including a rotary element and a magnetic device for guiding this rotary element in rotation arranged so as to exert a radial magnetic biasing force on the rotary element when a central axis of this rotary element undergoes a radial movement relative to a given axis of rotation. The magnetic device includes a pair of annular magnets the first annular magnet of which is carried by the rotary element and the second annular magnet is carried by a structure of the mechanism. The second annular magnet is parallel and axially superimposed with the first annular magnet when the central axis of the rotary element is coincident with the axis of rotation, the first and second annular magnets being arranged in magnetic attraction so as to impart on one another an axial magnetic force and a radial magnetic force.

Abstract: A rotary piezoelectric motor (1), in particular for a timepiece, including a rotor (3) configured to rotate and actuate a mechanical device, and a stator (2) configured to rotate the rotor (3), the stator (2) including a piezoelectric actuator provided with a resonator (29) arranged to perform an oscillatory motion, and a fixed element (4). The resonator in a movable element (5) arranged at a distance from the fixed element (4) and connected to the fixed element (4), the piezoelectric actuator being configured to move the movable element (5) against the rotor (3) to make it rotate, the movement of the movable element (5) making the rotor (3) rotate in a first direction.

Abstract: The invention relates to a timepiece component made of composite material including at least one reinforcement and one matrix, the reinforcement having a three-dimensional honeycomb structure with a plurality of cells into which the matrix is injected. The invention also concerns a method for manufacturing such a timepiece component.

Abstract: The piezoelectric balance spring (3) is provided for a circuit (10) for self-regulating an oscillation frequency of an oscillating mechanical system (2, 3), or an energy recovery circuit or a motor circuit for actuating the movement or for the automatic maintenance thereof. The piezoelectric balance spring (3) comprises at least one piezoelectric layer (7, 7?, 17, 17?, 27, 27?) disposed on a top face (20) or bottom face of a certain number of coils of the spring in a plane, and at least two pairs of electrodes (8a, 8b, 8c, 8d), whereby the electrodes of each pair are disposed on two opposing faces of the same piezoelectric layer or respectively two piezoelectric layers so as to apply a reverse bias voltage on each pair of electrodes.

Abstract: A system for authenticating a timepiece including an electronic device including an interface for the visual and/or sound broadcasting of information and an image acquisition module, as well as a server including a database including reference digital identifying elements, the system including a wireless and/or wired network architecture connecting the electronic device to the server.

Abstract: A piece of jewellery made of a natural elastomer composite material, wherein the natural elastomer composite material includes a natural elastomer matrix wherein between 0% and 6% cellulose fibres, between 0 and 5% anti-odour agents, and between 0 and 30% silica are dispersed.

Abstract: A device for fastening a back on a middle of a watch, the back having a shoulder forming a cover arranged to cover totally or partially with the middle and a body arranged to rest in the middle, the device including at least one pin integral with the middle and a gasket mounted between the back and the middle. The back includes, close to its periphery, at least one recess, the pin being arranged to slide in the recess between a first position, referred to as insertion position wherein the back is free, and a second position referred to as locking position wherein the back is locked and angularly positioned in relation to the middle. The recess includes at least one bump to form a hard spot and increase the torque during the passage of the pin at the bump.

Abstract: Provided is a device for fastening a back on a middle portion of a watch. The back includes a cover arranged to form a bearing surface with the middle portion and a body arranged to rest in the middle portion. The device includes an indexing ring disposed between the back and the middle portion, and the ring includes at least one lower catch arranged to cooperate with the back and ensure the indexing with the back and an upper catch are arranged to cooperate with the middle portion and ensure the indexing of the back and ring assembly in relation to the middle portion, and the upper catch has a height greater than that of the lower catch, or vice versa.

Abstract: A micromechanical functional assembly including at least one first part with a first functional surface intended to enter into frictional contact with a second functional surface, the second functional surface belonging either to the first part or to at least one second part constituting with the first part the functional assembly, wherein the functional assembly includes the first functional surface and the second functional surface are formed by a first layer including ultrananocrystalline, nanocrystalline or microcrystalline diamond, the first layer being topped by a second layer including S and F atoms. It also relates to the method for functionalising diamond.

Abstract: A horological resonator mechanism, including a structure carrying, via a flexible suspension, an anchor unit from which is suspended an inertial element oscillating about a pivot axis extending in a first direction Z, in a first degree of rotational freedom RZ, under the effect of the return forces of a flexure pivot including longitudinal elastic strips, each fixed to the inertial element and to the anchor unit, the flexible suspension allowing the anchor unit to move in five degrees of freedom, this resonator is a composite assembly made of at least two different materials, on the one hand for the flexure pivot, and on the other hand for the flexible suspension.