Abstract: The crystal (10), in the inner surface of which contact zones (17) are structured, includes close to its edge a hollow (14) machined in one of its faces (11, 12) or a groove (25) machined in its thickness and provided with an enamel deposition (20) for concealing said contact zones (17) after bonding.

Abstract: The present invention concerns a telephone-watch including at least one control member and a case in which there is mounted an electroacoustic transmitter transducer (103) in communication with an acoustic output cavity arranged in the case and in direct communication with the exterior via at least one output channel. The watch is characterized in that the output channel opens out on the same side of the case as the control member with respect to a 6-12 o'clock axis of the watch.

Abstract: There is disclosed a portable electronic instrument (1) including a case (2) and a user interface (11 to 15) for selecting the functions of said portable electronic instrument, this user interface including at least a first control member (11) mounted to be mobile in an assembly orifice (3a) arranged in the case so as to have a translation travel along an axis of actuation (X—X), said control member being able to be actuated by pressure to be brought from a position called the non pushed-in position to a position called the pushed-in position and to generate in response a control signal (SEL). The control member includes an electrically conductive stem (100) which passes through the assembly orifice and which includes first and second ends opening out respectively inside and outside the case, said stem being adapted to allow transmission of electric signals from and/or to the portable electronic instrument, when the control member is brought into said pushed-in position.

Abstract: The dial with an enamel coating (2) includes a base plate (1) made of ceramic material with portions in relief (4, 8) obtained by partial or through shaping or machining, formed by an insert (10) also having an enamel coating (12) and whose thickness defines a recess (4) or an embossment (8).

Abstract: The method of synchronising the analogue display (41) of a timepiece (40), including an electronic time base (64), is achieved using proximity sensors (60, 62) respectively associated with wheels (46, 48) each having an aperture (54, 56) for defining the angular position of the latter. Determination of the angular position of a wheel requires an angular distance of around 60° to 90° to be travelled with this type of proximity sensor. Dependency of the measurement results upon the temperature generates a problem of precision in determining the angular position of the wheels, in particular a wheel secured to the hour indicator, given that an angle of 60° to 90° corresponds to a time interval of 2 to 3 hours.

Abstract: The balance-spring is structured by photolithography and etching in a strip pre-cut from a quartz monocrystal such that the height h of the coils form, with the crystallographic axis z, an angle ? for adapting the thermal behaviour of the balance-spring to that of the balance, thereby reducing the variation of rate due to temperature variations.

Abstract: There is disclosed a portable electronic instrument (1) including a case (2) and a user interface (11 to 15) for selecting the functions of said portable electronic instrument, this user interface including at least a first control member (11) mounted to be mobile in an assembly orifice (3a) arranged in the case so as to have a translation travel along an axis of actuation (X-X), said control member being able to be actuated by pressure to be brought from a position called the non pushed-in position to a position called the pushed-in position and to generate in response a control signal (SEL). The control member includes an electrically conductive stem (100) which passes through the assembly orifice and which includes first and second ends opening out respectively inside and outside the case, said stem being adapted to allow transmission of electric signals from and/or to the portable electronic instrument, when the control member is brought into said pushed-in position.

Abstract: The present invention concerns a piezoelectric motor of the type including: a stator (2); a rotor (20) capable of moving in rotation in a plane (Pdm) called the mean movement plane perpendicular to a geometrical rotational axis (X1) on which the rotor (20) is centred; coupling means (8) for driving the rotor (20) arranged between the stator (2) and said rotor (20); piezoelectric means (12) capable of being electrically excited to impart a vibratory movement onto the coupling means (8); transmission means (40) able to transmit the vibratory movement from the coupling means (8) to the rotor (20) in order to drive said rotor (20) in rotation about its axis (X1), and holding means (44) for applying the rotor (20) onto the coupling means (8), characterised in that the coupling means (8) are arranged freely about the geometrical rotational axis (X1) on which they are centred, and in that the coupling means (8) rest on the stator (2) via support means (10) shaped to convert the vibratory movement of the point

Abstract: The wristwatch (1) provided with a telephone device (3) able to receive and transmit messages broadcast by an antenna (4). The antenna (4) is integrated in a tongue (5) one (7) of the ends of which is attached to the wristband. The tongue can be arranged in a first position in which it runs alongside the wristband at least partly and is merged with it or a second position in which it is moved away from the wristband and stands upright in a plane containing the circle defined by the wristband when it is worn.

Abstract: The present invention concerns a piezoelectric motor of the type including:

Abstract: The invention concerns astronomic watches capable of indicating the position of heavenly bodies of the solar system with respect to the Earth and to the zodiac. The watch according to the invention is an electronic watch including: a time base (1) for generating a standard frequency signal, a circuit (2) for determining the current time and date from said standard frequency signal, this current date including the day of the month, the month and the year, a manual control system (7; 21, 22, 23) allowing each of said heavenly bodies to be selected, a display system (6; 14, 15, 16, 20), and means (3, 4, 5) for determining the position of a selected heavenly body with respect to the Earth and to the signs of the zodiac and for causing this position to be indicated by the display system. Preferably the watch according to the invention is designed to allow the position of a heavenly body to be indicated at a date other than the current date which can be a past or future date.

Abstract: The wristwatch (1) provided with a telephone device (3) able to receive and transmit messages broadcast by an antenna (4). The antenna (4) is integrated in a tongue (5) one (7) of the ends of which is attached to the wristband. The tongue can be arranged in a first position in which it runs alongside the wristband at least partly and is merged with it or a second position in which it is moved away from the wristband and stands upright in a plane containing the circle defined by the wristband when it is worn.

Abstract: The present invention relates to a radio telephone watch (1) intended to be used in a mobile communication system, said watch (1) including a case (2) and a wristband (3) allowing said watch (1) to be worn on the wrist. According to the present invention, this watch further includes a casing (4; 8; 104), associated with a first strand (31) of said wristband (3), capable of receiving, in a removable manner, a SIM card (10) allowing access to said mobile communication system, an electronic module (5) arranged in said watch case (2) and allowing access to data stored in said SIM card (10), and electric connection means (6) between said SIM card (10) and said electronic module (5), integrated in said first strand (31) of the wristband (3). According to the present invention, a device (7; 9) assuring the fastening of said wristband (3) is further advantageously associated with said casing (4; 8; 104).

Abstract: A dial, in particular for a timepiece, formed of at least one regenerating photoelectrochemical type solar cell including a first substrate intended to be exposed to the light and a second substrate carrying on their opposite faces electrodes between which is arranged a physico-chemical system capable of absorbing light and generating an electric voltage across the terminals of said electrodes, characterised in that said first substrate is formed of a translucent material.

Abstract: This invention provides protection against power supply failure, in particular of electronic circuits of timepieces powered by photovoltaic batteries. The invention comprises a continuous electric power supply comprising: an electrical continuous source (G) coupled to a power output (VDD, GND); energy storing means (6); and a reversible dc/dc electric converter (5) coupled both to the power output (VDD, GND) and to the energy storing means (6). The converter (5) comprises switching means (T1, T2, T3, T4) for modifying its configuration. The power supply storing means (6) comprise essentially a capacitor (C). Preferably, the reversible converter (5) is a dc/dc converter, the converter being a voltage multiplier in a first configuration and being a voltage divider in a second configuration.

Abstract: A highly stable frequency generator (G) comprises an oscillator (10) for generating a first frequency (F1), andfurther comprises a time base (BT) providing a time stable frequency signal which is independent of the temperature, and a feedback circuit arranged to provide a first number of pulses (n.sub.T) coming from the oscillator (10) to a comparing circuit (13), a circuit (14) for providing a reference number of pulses (N.sub.T) to said comparing circuit (13), and a circuit (13,15,16) providing a correction signal (Sc) as a function of the difference (.DELTA.) between the first number (n.sub.T) and the reference number (N.sub.T), the generator (G) further comprising a correction circuit (17) of the oscillation frequency (F1) of said first oscillator (10), this correction circuit being controlled by said control signal (Sc).

Abstract: The present invention concerns an electronic power module comprising several integrated power circuits which may, for example, be insulated gate bipolar transistors (IGBT).

Abstract: According to this method the longitude of the place where one is situated on the surface of the earth is determined by comparing the local time with the time of a reference time zone, and the latitude of the place where one is situated is determined by measuring the inclination of the earth's magnetic field in relation to the horizontal.

Abstract: Watch comprising an arrangement for detecting the direction of the terrestrial magnetic north formed by a permanent magnet and at least two magnetic sensors (34, 36) arranged for detecting the flux of the magnetic field of the magnet. The watch moreover comprises electronic management and control means serving, as a function of the signals coming from the two sensors, to control indicating means (16) arranged so as to indicate either a selected geographic azimuth or the direction of a predefined locality, in particular Mecca.

Abstract: A measurement arrangement, in particular for measuring the proportion of glucose in the blood, which is intended to be associated with a removable sensor including a plurality of single use active zones includes a cutting arrangement (44, 64, 66, 68, 70) serving to cut off the removable sensor (52) introduced into the measurement arrangement. The cutting arrangement comprises a lever (44), a crank (66) and a blade (70) fixed on the lever.