EP0603721A1 - Timepiece provided with an electromagnetic signal transmitting antenna - Google Patents

Timepiece provided with an electromagnetic signal transmitting antenna Download PDF

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Publication number
EP0603721A1
EP0603721A1 EP93120193A EP93120193A EP0603721A1 EP 0603721 A1 EP0603721 A1 EP 0603721A1 EP 93120193 A EP93120193 A EP 93120193A EP 93120193 A EP93120193 A EP 93120193A EP 0603721 A1 EP0603721 A1 EP 0603721A1
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EP
European Patent Office
Prior art keywords
antenna
support plate
timepiece according
face
timepiece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93120193A
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German (de)
French (fr)
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EP0603721B1 (en
Inventor
Lucas Barroso
Peirre-André Farine
Minh-Tam Diep
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Asulab AG
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Asulab AG
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Publication of EP0603721A1 publication Critical patent/EP0603721A1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece

Definitions

  • the present invention relates to a timepiece comprising an antenna for transmitting an electromagnetic signal.
  • Timepieces of this type which are produced in the form of a wristwatch, are generally intended for the remote control of a device, such as for example lighting means, or even such as locking and unlocking means, in particular of a residential door or a motor vehicle.
  • a device such as for example lighting means, or even such as locking and unlocking means, in particular of a residential door or a motor vehicle.
  • the device to be controlled is provided with a station for receiving the signal emitted by the wearer of the timepiece.
  • This receiving station processes the received signal, here in a binary form, and controls organs, either essentially electrical or electromechanical, such as a contact or a transducer to trigger or activate a lamp or a bolt.
  • the present invention aims to remedy these drawbacks by providing a timepiece comprising an antenna for transmitting an electromagnetic signal which is of the lowest volume possible and which is insensitive to any internal or external influence.
  • the subject of the present invention is a timepiece of the type comprising a box, a time movement housed inside said box, and means for transmitting an electromagnetic signal comprising electronic supply means. of the signal and at least one transmitting antenna coupled to said electronic means, this part being characterized in that said antenna is formed on a first face of a support plate of essentially planar shape, arranged inside said box, this antenna consisting of a thin metal layer deposited on said face of the support plate.
  • the electronic means for supplying the signal are also mounted on said support plate.
  • the electronic means for supplying the signal are arranged on the face of the support plate on which the antenna is formed.
  • the antenna is produced by photolithographic etching of an electrically conductive layer deposited on said face of the support plate.
  • FIGS. 1 and 2 a timepiece according to the invention will be described below, represented here by the general reference 1.
  • the timepiece 1 conventionally comprises a box 2 made for example of a plastic material, by a conventional injection technique.
  • the part 1 also comprises a horometric movement 4 which is housed inside the box 2 and which is here mechanically coupled to indicators 6 and 8 formed respectively by a minute hand and by an hour hand.
  • the part 1 is made watertight by the provision of a lens 10 fixedly mounted on the box 2, in a conventional manner, for example by a gluing or ultrasonic welding technique.
  • the part 1 is further provided with means for transmitting an electromagnetic signal, these means comprising electronic means for supplying a signal, referenced 12, and at least one transmitting antenna 14, coupled to the electronic means 12.
  • the electronic means 12 for supplying the signal are shown in more detail in FIG. 3 and will be described later.
  • the antenna 14 is constituted by two branches 14a and 14b each having a partially circular shape, these branches 14a and 14b being respectively connected, at one of their ends , referenced 14c, to electrical connection tracks 16a and 16b. These branches 14a and 14b are also connected to each other, at their other end referenced 14d, by a loop 18.
  • the antenna 14 is formed, here directly, on a first face 20a of a support plate 20 of essentially planar shape, disposed inside the box 2 and locked in the latter, on the one hand, against a shoulder 22 formed directly in the box 2, and on the other hand, by the free end, not referenced, of the glass 10.
  • the support plate 20 which is made of an insulating material, such as epoxy, has an outer contour which corresponds substantially to that formed by the upper cavity 24 formed in the box 2 for the arrangement of the 8 and 8 hour hands, respectively. minutes 6, and for embedding the glass 10.
  • the support plate 20 therefore has a circular contour, and it is pierced in its center with an orifice 20c allowing the passage of the barrels, not referenced, of the needles 6 and 8.
  • the support plate 20 which has a shape of thin pellet (about 0.35 mm thick), is similar in shape to a dial, and it is likely to be placed in the box in place of the latter, as shown in this embodiment. realization, or under it (not shown).
  • the antenna 14 is produced by a thin metal layer deposited on the face 20a of the support plate 20.
  • the electronic means 12 for supplying the signal are also mounted on the support plate 20 , and are anchored on the face 20a of this plate.
  • the electronic means 12 for supplying the signal are arranged on the face of the support plate 20 on which the antenna 14 is formed. In another embodiment, not shown, these electronic means 12 are integrated into the movement 4.
  • the antenna 14 is produced by photolithographic etching of an electroconductive layer, such as a copper layer covered with a gold deposit, this layer being deposited on the face 20a of the support plate 20.
  • an electroconductive layer such as a copper layer covered with a gold deposit
  • These etching techniques also called structuring of thin or not very thick layers (less than a millimeter) deposited on a substrate, such as the plate 20, are conventional in themselves, and will not be described here in more detail.
  • connection tracks 16a and 16b are provided on the support plate 20, in the same layer as that forming the antenna 14, therefore over the same thickness. These electrical connection tracks 16a and 16b provide an electrical connection between the antenna 14 and the electronic means 12 for supplying the signal.
  • the support plate 20 is, in this embodiment, placed directly above the movement 4.
  • the antenna 14 extends in a curved fashion along the periphery of the support plate 20, and in particular along the periphery of the cavity 24 of the box 2, outside the movement 4.
  • the face 20a of the support plate 20 is oriented opposite the movement 4. More particularly, this support plate 20 here acts directly as a dial.
  • the antenna 14 as well as the electronic means 12 for supplying the signal are arranged around the movement 4 outside and outside of it, in an annular housing 26 provided for this purpose in the box 2
  • the antenna 14 and the electronic means 12 for supplying the signal are therefore arranged outside the surface or frontal projection of the movement 4, so that in the axial direction there is no possible interference between the movement 4 and the means 12, 14 for transmitting the electromagnetic signal.
  • the part 1 further comprises a capacitive plane 30 which is formed on a second face 20b of the support plate 20, this face 20b being opposite to the first face 20a on which the antenna is formed 14.
  • the capacitive plane 30 is constituted by a set of streaks 32, two of which have only been referenced here. These ridges 32 are arranged adjacent to each other and converge, in this embodiment, towards the center of the support plate 20, that is to say towards the orifice 20c for passage of the needle barrels. 6 and 8.
  • the ridges 32 forming the capacitive plane 30 are formed on the second face 20b of the support plate 20 by the same photolitic deposition and structuring technique as the antenna 14, in a thin electroconductive layer of the same nature.
  • the capacitive plane 30 is arranged in line with the antenna 14, so that it covers it almost entirely.
  • the capacitive plane 30 provides effective protection against parasitic capacitances, due for example to the bringing together of the user's free hand towards the timepiece, in particular during the actuation of the means 12, 14 for transmitting the electromagnetic signal.
  • the capacitive plane 30 being formed on the visible upper face 20b of the support plate 20 forming a dial, this capacitive plane 30 also constitutes patterns of an ornamental nature.
  • the antenna 14 has an extension which is formed by a track 36 electrically connected to the so-called lower layer forming the antenna 14 and which is formed, in the vicinity of the center of the support plate 20, on the second face 20b forming here upper face.
  • the track 36 therefore crosses the support plate 20 via a metallization and an orifice, not shown, to come into contact with the layer forming the antenna 14 on the face 20a, here forming the underside.
  • a ground plane 38, electrically connected to the movement 4, is further provided on the upper face 20b, in the vicinity of the capacitive plane 30.
  • the circuit 12 comprises two supply lines 40a and 40b respectively (here positive and negative respectively) constituted by electrical connection wires connected to an electrical supply, not shown, of movement 4.
  • the electronic means 12 also include a transmitter logic circuit 42 connected between the two supply lines 40a and 40b respectively.
  • the transmitting logic circuit 42 receives, from a line 44 likewise connected to a time base not shown of the time movement 4, a clock signal calibrated on a frequency, such as for example 32 kHz.
  • the rod in the form of a switch, is connected to the supply line 40b, upstream from the connection point between the transmitter logic circuit 42 and the supply line 40b.
  • a first resistor 46 which is itself connected to the base of a transistor 48.
  • connection between the resistor 46 and the transistor 48 forms an intermediate line 50. Between this line 50 and the supply line 40b are respectively connected, on the one hand, a resistor 52 and, on the other hand, a capacitor 54. A second capacitor, referenced 56, is in turn connected between the two supply lines 40a and 40b.
  • a third capacitor 58 is connected between the two electrical connections 16a and 16b of the antenna 14.
  • the first electrical connection 16a of the antenna 14 is therefore connected between the first supply line 40a and the capacitor 58, while the second connection track 16b is connected between capacitor 58 and the collector of transistor 48.
  • the emitter of transistor 48 is in turn connected to the second supply line 40b via a resistor 60.

Abstract

The invention relates to a timepiece which includes a case (2), a clockwork movement (4) housed inside the case (2) and means for transmitting an electromagnetic signal including electronic means (12) of delivering the signal and at least one transmitting antenna (14) coupled to the electronic means (12). This timepiece is characterised in that the antenna (14) is accommodated on a first face (20a) of a support plate (20) of essentially planar shape arranged inside the case (2), this antenna (14) consisting of a thin metallic layer deposited on the face (20a) of the support plate (20). This timepiece applies to the control of a device, for example for locking and unlocking, in particular, a door. <IMAGE>

Description

La présente invention concerne une pièce d'horlogerie comportant une antenne d'émission d'un signal électromagnétique.The present invention relates to a timepiece comprising an antenna for transmitting an electromagnetic signal.

Les pièces d'horlogerie de ce type, qui sont réalisées sous la forme d'une montre-bracelet, sont généralement destinées à la commande à distance d'un dispositif, tel que par exemple des moyens d'éclairage, ou encore tel que des moyens de verrouillage et de déverrouillage, notamment d'une porte d'habitation ou d'un véhicule automobile. A cet effet, le dispositif à commander est pourvu d'une station de réception du signal émis par le porteur de la pièce d'horlogerie. Cette station de réception traite le signal reçu, ici sous une forme binaire, et pilote des organes, soit essentiellement électriques, soit électromécaniques, tel qu'un contact ou un transducteur pour assurer le déclenchement ou l'activation d'une lampe ou d'un pêne.Timepieces of this type, which are produced in the form of a wristwatch, are generally intended for the remote control of a device, such as for example lighting means, or even such as locking and unlocking means, in particular of a residential door or a motor vehicle. To this end, the device to be controlled is provided with a station for receiving the signal emitted by the wearer of the timepiece. This receiving station processes the received signal, here in a binary form, and controls organs, either essentially electrical or electromechanical, such as a contact or a transducer to trigger or activate a lamp or a bolt.

Les pièces d'horlogerie classiques comportant ce type d'antenne d'émission sont généralement volumineuses et sensibles aux influences internes ou externes. Les perturbations internes sont causées par des interactions électromagnétiques entre l'antenne et le mouvement horométrique qui est logé dans la pièce d'horlogerie, tandis que les perturbations externes proviennent d'une capacité parasite créée par l'approchement de la main libre du porteur sur la pièce d'horlogerie, lors de la transmission du signal qui se fait par pression sur la tige.Classic timepieces with this type of transmitting antenna are generally bulky and sensitive to internal or external influences. Internal disturbances are caused by electromagnetic interactions between the antenna and the time movement which is housed in the timepiece, while external disturbances come from a parasitic capacity created by the approach of the wearer's free hand on the timepiece, during the transmission of the signal which is effected by pressure on the rod.

Ainsi, la présente invention a-t-elle pour but de remédier à ces inconvénients en fournissant une pièce d'horlogerie comportant une antenne d'émission d'un signal électromagnétique qui soit d'un volume le plus faible possible et qui soit insensible à toute influence interne ou externe.Thus, the present invention aims to remedy these drawbacks by providing a timepiece comprising an antenna for transmitting an electromagnetic signal which is of the lowest volume possible and which is insensitive to any internal or external influence.

A cet effet, la présente invention a pour objet une pièce d'horlogerie du type comportant une boîte, un mouvement horométrique logé à l'intérieur de ladite boîte, et des moyens d'émission d'un signal électromagnétique comportant des moyens électroniques de fourniture du signal et au moins une antenne d'émission couplée auxdits moyens électroniques, cette pièce étant caractérisée en ce que ladite antenne est ménagée sur une première face d'une plaque support de forme essentiellement plane, disposée à l'intérieure de ladite boîte, cette antenne étant constituée par une couche métallique mince déposée sur ladite face de la plaque support.To this end, the subject of the present invention is a timepiece of the type comprising a box, a time movement housed inside said box, and means for transmitting an electromagnetic signal comprising electronic supply means. of the signal and at least one transmitting antenna coupled to said electronic means, this part being characterized in that said antenna is formed on a first face of a support plate of essentially planar shape, arranged inside said box, this antenna consisting of a thin metal layer deposited on said face of the support plate.

Selon une autre caractéristique, les moyens électroniques de fourniture du signal sont également montés sur ladite plaque support.According to another characteristic, the electronic means for supplying the signal are also mounted on said support plate.

On précisera aussi que les moyens électroniques de fourniture du signal sont disposés sur la face de la plaque support sur laquelle est ménagée l'antenne.It will also be noted that the electronic means for supplying the signal are arranged on the face of the support plate on which the antenna is formed.

Selon un mode de réalisation particulier de l'invention, l'antenne est réalisée par gravage photolithographique d'une couche électroconductrice déposée sur ladite face de la plaque support.According to a particular embodiment of the invention, the antenna is produced by photolithographic etching of an electrically conductive layer deposited on said face of the support plate.

Mais d'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui suit, faite à lumière des dessins donnés ici uniquement à titre d'exemple et dans lesquelles :

  • la figure 1 est une vue en coupe représentant de façon très schématique une pièce d'horlogerie selon l'invention;
  • la figure 2 est une vue de dessus de la pièce de la figure 1; et
  • la figure 3 représente des moyens électroniques de fourniture d'un signal destinés à être couplés à l'antenne de la pièce d'horlogerie des figures 1 et 2.
However, other characteristics and advantages of the present invention will appear on reading the detailed description which follows, made in the light of the drawings given here only by way of example and in which:
  • Figure 1 is a sectional view very schematically showing a timepiece according to the invention;
  • Figure 2 is a top view of the part of Figure 1; and
  • FIG. 3 represents electronic means for supplying a signal intended to be coupled to the antenna of the timepiece of FIGS. 1 and 2.

En se reportant aux figures 1 et 2, on décrira ci-après une pièce d'horlogerie selon l'invention, représentée ici par la référence générale 1.Referring to FIGS. 1 and 2, a timepiece according to the invention will be described below, represented here by the general reference 1.

La pièce d'horlogerie 1 comporte de façon classique une boîte 2 réalisée par exemple en un matériau plastique, par une technique d'injection classique.The timepiece 1 conventionally comprises a box 2 made for example of a plastic material, by a conventional injection technique.

La pièce 1 comporte en outre un mouvement horométrique 4 qui est logé à l'intérieur de la boîte 2 et qui est couplé ici mécaniquement à des indicateurs 6 et 8 formés respectivement par une aiguille des minutes et par une aiguille des heures.The part 1 also comprises a horometric movement 4 which is housed inside the box 2 and which is here mechanically coupled to indicators 6 and 8 formed respectively by a minute hand and by an hour hand.

La pièce 1 est rendue étanche par la disposition d'une glace 10 montée fixement sur la boîte 2, de façon classique, par exemple par une technique de collage ou de soudage aux ultrasons. La pièce 1 est de plus pourvue de moyens d'émission d'un signal électromagnétique, ces moyens comportant des moyens électroniques de fourniture d'un signal, référencés 12, et au moins une antenne d'émission 14, couplée aux moyens électroniques 12.The part 1 is made watertight by the provision of a lens 10 fixedly mounted on the box 2, in a conventional manner, for example by a gluing or ultrasonic welding technique. The part 1 is further provided with means for transmitting an electromagnetic signal, these means comprising electronic means for supplying a signal, referenced 12, and at least one transmitting antenna 14, coupled to the electronic means 12.

Les moyens électroniques 12 de fourniture du signal sont représentés de façon plus détaillée à la figure 3 et seront décrits ultérieurement.The electronic means 12 for supplying the signal are shown in more detail in FIG. 3 and will be described later.

Comme on le voit plus particulièrement sur la figure 2, en traits interrompus, l'antenne 14 est constituée par deux branches 14a et 14b présentant chacune une forme partiellement circulaire, ces branches 14a et 14b étant respectivement reliées, à l'une de leurs extrémités, référencée 14c, à des pistes de connexion électrique 16a et 16b. Ces branches 14a et 14b sont par ailleurs reliées l'une à l'autre, à leur autre extrémité référencée 14d, par une boucle 18.As can be seen more particularly in FIG. 2, in broken lines, the antenna 14 is constituted by two branches 14a and 14b each having a partially circular shape, these branches 14a and 14b being respectively connected, at one of their ends , referenced 14c, to electrical connection tracks 16a and 16b. These branches 14a and 14b are also connected to each other, at their other end referenced 14d, by a loop 18.

En se référant désormais à la figure 1, on constate que l'antenne 14 est ménagée, ici directement, sur une première face 20a d'une plaque support 20 de forme essentiellement plane, disposée à l'intérieur de la boîte 2 et bloquée dans celle-ci, d'une part, contre un épaulement 22 formé directement dans la boîte 2, et d'autre part, par l'extrémité libre, non référencée, de la glace 10.Referring now to FIG. 1, it can be seen that the antenna 14 is formed, here directly, on a first face 20a of a support plate 20 of essentially planar shape, disposed inside the box 2 and locked in the latter, on the one hand, against a shoulder 22 formed directly in the box 2, and on the other hand, by the free end, not referenced, of the glass 10.

La plaque support 20 qui est réalisée en un matériau isolant, tel que de l'époxy, présente un contour extérieur qui correspond sensiblement à celui formé par la cavité supérieure 24 ménagée dans la boîte 2 pour la disposition des aiguilles, respectivement des heures 8 et des minutes 6, et pour l'encastrement de la glace 10.The support plate 20 which is made of an insulating material, such as epoxy, has an outer contour which corresponds substantially to that formed by the upper cavity 24 formed in the box 2 for the arrangement of the 8 and 8 hour hands, respectively. minutes 6, and for embedding the glass 10.

Dans cet exemple, la plaque support 20 présente donc un contour circulaire, et elle est percée en son centre d'un orifice 20c permettant le passage des canons, non référencés, des aiguilles 6 et 8. La plaque support 20 qui a une forme de pastille mince (d'une épaisseur de 0,35 mm environ), est de forme semblable à un cadran, et elle est susceptible d'être disposée dans la boîte en lieu et place de celui-ci, comme représenté dans le présent mode de réalisation, ou sous celui-ci (non représenté).In this example, the support plate 20 therefore has a circular contour, and it is pierced in its center with an orifice 20c allowing the passage of the barrels, not referenced, of the needles 6 and 8. The support plate 20 which has a shape of thin pellet (about 0.35 mm thick), is similar in shape to a dial, and it is likely to be placed in the box in place of the latter, as shown in this embodiment. realization, or under it (not shown).

L'antenne 14 est réalisée par une couche métallique mince déposée sur la face 20a de la plaque support 20. Comme on le voit sur la figure 1 de façon schématique, les moyens électroniques 12 de fourniture du signal sont également montés sur la plaque support 20, et sont ancrés sur la face 20a de cette plaque.The antenna 14 is produced by a thin metal layer deposited on the face 20a of the support plate 20. As can be seen in FIG. 1 schematically, the electronic means 12 for supplying the signal are also mounted on the support plate 20 , and are anchored on the face 20a of this plate.

Ainsi, dans ce mode de réalisation, les moyens électroniques 12 de fourniture du signal sont disposés sur la face de la plaque support 20 sur laquelle est ménagée l'antenne 14. Dans un autre mode de réalisation, non représenté, ces moyens électroniques 12 sont intégrés au mouvement 4.Thus, in this embodiment, the electronic means 12 for supplying the signal are arranged on the face of the support plate 20 on which the antenna 14 is formed. In another embodiment, not shown, these electronic means 12 are integrated into the movement 4.

On précisera ici que l'antenne 14 est réalisée par gravage photolithographique d'une couche électroconductrice, telle que qu'une couche de cuivre recouverte d'un dépôt d'or, cette couche étant déposée sur la face 20a de la plaque support 20. Ces techniques de gravage, dites aussi de structuration de couches minces ou peu épaisse (inférieure au millimétre) déposées sur un substrat, tel que la plaque 20, sont classiques en elles-mêmes, et ne seront pas décrites ici de façon plus détaillée.It will be specified here that the antenna 14 is produced by photolithographic etching of an electroconductive layer, such as a copper layer covered with a gold deposit, this layer being deposited on the face 20a of the support plate 20. These etching techniques, also called structuring of thin or not very thick layers (less than a millimeter) deposited on a substrate, such as the plate 20, are conventional in themselves, and will not be described here in more detail.

On précisera aussi que les pistes de connexion électrique 16a et 16b sont ménagées sur la plaque support 20, dans la même couche que celle formant l'antenne 14, donc sur une même épaisseur. Ces pistes de connexion électriques 16a et 16b assurent une liaison électrique entre l'antenne 14 et les moyens électroniques 12 de fourniture du signal.It will also be noted that the electrical connection tracks 16a and 16b are provided on the support plate 20, in the same layer as that forming the antenna 14, therefore over the same thickness. These electrical connection tracks 16a and 16b provide an electrical connection between the antenna 14 and the electronic means 12 for supplying the signal.

Comme on le voit très nettement sur les figures 1 et 2, la plaque support 20 est, dans ce mode de réalisation, disposée directement au-dessus du mouvement 4.As can be clearly seen in FIGS. 1 and 2, the support plate 20 is, in this embodiment, placed directly above the movement 4.

Plus particulièrement, l'antenne 14 s'étend de façon courbe le long de la périphérie de la plaque support 20, et notamment le long de la périphérie de la cavité 24 de la boîte 2, à l'extérieur du mouvement 4.More particularly, the antenna 14 extends in a curved fashion along the periphery of the support plate 20, and in particular along the periphery of the cavity 24 of the box 2, outside the movement 4.

Dans cet exemple, la face 20a de la plaque support 20 est orientée en regard du mouvement 4. Plus particulièrement, cette plaque support 20 fait ici directement office de cadran.In this example, the face 20a of the support plate 20 is oriented opposite the movement 4. More particularly, this support plate 20 here acts directly as a dial.

Ainsi, on constate que l'antenne 14 ainsi que les moyens électroniques 12 de fourniture du signal sont ménagés autour du mouvement 4 à l'extérieur et en dehors de celui-ci, dans un logement annulaire 26 prévu à cet effet dans la boîte 2. L'antenne 14 et les moyens électroniques 12 de fourniture du signal sont donc disposés à l'extérieur de la surface ou projection frontale du mouvement 4, si bien qu'en direction axiale il n'existe aucune interférence possible entre le mouvement 4 et les moyens 12, 14 d'émission du signal électromagnétique.Thus, it can be seen that the antenna 14 as well as the electronic means 12 for supplying the signal are arranged around the movement 4 outside and outside of it, in an annular housing 26 provided for this purpose in the box 2 The antenna 14 and the electronic means 12 for supplying the signal are therefore arranged outside the surface or frontal projection of the movement 4, so that in the axial direction there is no possible interference between the movement 4 and the means 12, 14 for transmitting the electromagnetic signal.

Comme on le voit sur la figure 2, la pièce 1 comporte de plus un plan capacitif 30 qui est ménagé sur une seconde face 20b de la plaque support 20, cette face 20b étant opposée à la première face 20a sur laquelle est ménagée l'antenne 14.As can be seen in FIG. 2, the part 1 further comprises a capacitive plane 30 which is formed on a second face 20b of the support plate 20, this face 20b being opposite to the first face 20a on which the antenna is formed 14.

Plus particulièrement, le plan capacitif 30 est constitué par un ensemble de stries 32 dont deux ont ici été uniquement référencées. Ces stries 32 sont ménagées de façon adjacentes les unes par rapport aux autres et convergent, dans ce mode de réalisation, vers le centre de la plaque support 20, c'est-à-dire vers l'orifice 20c de passage des canons des aiguilles 6 et 8.More particularly, the capacitive plane 30 is constituted by a set of streaks 32, two of which have only been referenced here. These ridges 32 are arranged adjacent to each other and converge, in this embodiment, towards the center of the support plate 20, that is to say towards the orifice 20c for passage of the needle barrels. 6 and 8.

On précisera ici que les stries 32 formant le plan capacitif 30 sont ménagées sur la seconde face 20b de la plaque support 20 par la même technique de dépôt et de structuration photolitographique que l'antenne 14, dans une couche électroconductrice mince de même nature.It will be specified here that the ridges 32 forming the capacitive plane 30 are formed on the second face 20b of the support plate 20 by the same photolitic deposition and structuring technique as the antenna 14, in a thin electroconductive layer of the same nature.

Le plan capacitif 30 est ménagé au droit de l'antenne 14, si bien qu'il la recouvre presque entièrement.The capacitive plane 30 is arranged in line with the antenna 14, so that it covers it almost entirely.

Après plusieurs essais, il s'est avéré que le plan capacitif 30 permettait une protection efficace contre les capacités parasites, dues par exemple au rapprochement de la main libre de l'utilisateur vers la pièce d'horlogerie, notamment lors de l'actionnement des moyens 12, 14 d'émission du signal électromagnétique. Le plan capacitif 30 étant ménagé sur la face supérieure visible 20b de la plaque support 20 formant cadran, ce plan capacitif 30 constitue en outre des motifs à caractère ornemental.After several tests, it turned out that the capacitive plane 30 provides effective protection against parasitic capacitances, due for example to the bringing together of the user's free hand towards the timepiece, in particular during the actuation of the means 12, 14 for transmitting the electromagnetic signal. The capacitive plane 30 being formed on the visible upper face 20b of the support plate 20 forming a dial, this capacitive plane 30 also constitutes patterns of an ornamental nature.

En outre, l'antenne 14 comporte une extension qui est formée par une piste 36 connectée électriquement à la couche dite inférieure formant l'antenne 14 et qui est ménagée, au voisinage du centre de la plaque support 20, sur la seconde face 20b formant ici face supérieure. La piste 36 traverse donc la plaque support 20 via une métallisation et un orifice, non représenté, pour venir contacter la couche formant l'antenne 14 sur la face 20a, formant ici face inférieure.In addition, the antenna 14 has an extension which is formed by a track 36 electrically connected to the so-called lower layer forming the antenna 14 and which is formed, in the vicinity of the center of the support plate 20, on the second face 20b forming here upper face. The track 36 therefore crosses the support plate 20 via a metallization and an orifice, not shown, to come into contact with the layer forming the antenna 14 on the face 20a, here forming the underside.

Un plan de masse 38, connecté électriquement au mouvement 4, est en outre ménagé sur la face supérieure 20b, au voisinage du plan capacitif 30.A ground plane 38, electrically connected to the movement 4, is further provided on the upper face 20b, in the vicinity of the capacitive plane 30.

On précisera ici que l'actionnement des moyens 12, 14 d'émission du signal électromagnétique est permis par la sollicitation de la tige T, représentée de façon schématique à la figure 3, et notamment par une poussée brève sur celle-ci.It will be specified here that the actuation of the means 12, 14 for transmitting the electromagnetic signal is permitted by the biasing of the rod T, shown schematically in Figure 3, and in particular by a short push on it.

En se référant désormais à cette figure 3, on décrira ci-après les moyens électroniques 12 de fourniture du signal qui est destiné à être transmis par l'antenne 14.Referring now to this FIG. 3, the electronic means 12 for supplying the signal which is intended to be transmitted by the antenna 14 will be described below.

Le circuit 12 comporte deux lignes d'alimentation respectivement 40a et 40b (ici respectivement positive et négative) constituées par des fils de connexion électrique reliés à une alimentation électrique, non représentée, du mouvement 4.The circuit 12 comprises two supply lines 40a and 40b respectively (here positive and negative respectively) constituted by electrical connection wires connected to an electrical supply, not shown, of movement 4.

Les moyens électroniques 12 comportent en outre un circuit logique émetteur 42 relié entre les deux lignes d'alimentation respectivement 40a et 40b.The electronic means 12 also include a transmitter logic circuit 42 connected between the two supply lines 40a and 40b respectively.

Le circuit logique émetteur 42 reçoit, depuis une ligne 44 de même connectée à une base de temps non représentée du mouvement horométrique 4, un signal d'horloge calé sur une fréquence, telle que par exemple 32 kHz.The transmitting logic circuit 42 receives, from a line 44 likewise connected to a time base not shown of the time movement 4, a clock signal calibrated on a frequency, such as for example 32 kHz.

On constate que la tige, sous forme d'un commutateur, est connectée sur la ligne d'alimentation 40b, en amont du point de connexion entre le circuit logique émetteur 42 et la ligne d'alimentation 40b.It can be seen that the rod, in the form of a switch, is connected to the supply line 40b, upstream from the connection point between the transmitter logic circuit 42 and the supply line 40b.

A la sortie du circuit logique émetteur 42 est connectée une première résistance 46 qui est elle-même reliée à la base d'un transistor 48.At the output of the emitting logic circuit 42 is connected a first resistor 46 which is itself connected to the base of a transistor 48.

La liaison entre la résistance 46 et le transistor 48 forme une ligne intermédiaire 50. Entre cette ligne 50 et la ligne d'alimentation 40b sont respectivement reliées, d'une part, une résistance 52 et, d'autre part, un condensateur 54. Un second condensateur, référencé 56, est quant à lui relié entre les deux lignes d'alimentation 40a et 40b.The connection between the resistor 46 and the transistor 48 forms an intermediate line 50. Between this line 50 and the supply line 40b are respectively connected, on the one hand, a resistor 52 and, on the other hand, a capacitor 54. A second capacitor, referenced 56, is in turn connected between the two supply lines 40a and 40b.

Un troisième condensateur 58 est relié entre les deux connexions électriques 16a et 16b de l'antenne 14. La première connexion électrique 16a de l'antenne 14 est donc reliée entre la première ligne d'alimentation 40a et le condensateur 58, tandis que la deuxième piste de connexion 16b est reliée entre le condensateur 58 et le collecteur du transistor 48. L'émetteur du transistor 48 est quant à lui relié à la deuxième ligne d'alimentation 40b via une résistance 60.A third capacitor 58 is connected between the two electrical connections 16a and 16b of the antenna 14. The first electrical connection 16a of the antenna 14 is therefore connected between the first supply line 40a and the capacitor 58, while the second connection track 16b is connected between capacitor 58 and the collector of transistor 48. The emitter of transistor 48 is in turn connected to the second supply line 40b via a resistor 60.

Claims (16)

Pièce d'horlogerie du type comportant une boîte (2), un mouvement horométrique (4) logé à l'intérieur de ladite boîte (2) et des moyens d'émission d'un signal électromagnétique comportant des moyens électroniques (12) de fourniture du signal et au moins une antenne d'émission (14) couplée auxdits moyens électroniques (12), caractérisée en ce que ladite antenne (14) est ménagée sur une première face (20a) d'une plaque support (20) de forme essentiellement plane disposée à l'intérieur de ladite boîte (2), cette antenne (14) étant constituée par une couche métallique mince déposée sur ladite face (20a) de la plaque support (20).Timepiece of the type comprising a box (2), a time movement (4) housed inside said box (2) and means for transmitting an electromagnetic signal comprising electronic means (12) for supplying of the signal and at least one transmitting antenna (14) coupled to said electronic means (12), characterized in that said antenna (14) is formed on a first face (20a) of a support plate (20) of essentially shape plane disposed inside said box (2), this antenna (14) being constituted by a thin metallic layer deposited on said face (20a) of the support plate (20). Pièce d'horlogerie selon la revendication 1, caractérisée en ce que lesdits moyens électroniques (12) de fourniture du signal sont également montés sur ladite plaque support (20).Timepiece according to claim 1, characterized in that said electronic signal supply means (12) are also mounted on said support plate (20). Pièce d'horlogerie selon la revendication 2, caractérisée en ce que lesdits moyens électroniques (12) de fourniture du signal sont disposés sur ladite première face (20a) de la plaque support (20) sur laquelle est ménagée l'antenne (14).Timepiece according to claim 2, characterized in that said electronic means (12) for supplying the signal are arranged on said first face (20a) of the support plate (20) on which the antenna (14) is formed. Pièce d'horlogerie selon l'une des revendications 1 à 3, caractérisée en ce que ladite antenne (14) est réalisée par gravage photolithographique d'une couche électroconductrice déposée sur ladite première face (20a) de la plaque support (20).Timepiece according to one of claims 1 to 3, characterized in that said antenna (14) is produced by photolithographic etching of an electrically conductive layer deposited on said first face (20a) of the support plate (20). Pièce d'horlogerie selon la revendication 3, caractérisée en ce que ladite plaque support (20) comporte des pistes de connexion électrique (16a,16b) assurant la liaison entre l'antenne (14) et les moyens électroniques (12) de fourniture du signal.Timepiece according to claim 3, characterized in that said support plate (20) comprises electrical connection tracks (16a, 16b) ensuring the connection between the antenna (14) and the electronic means (12) for supplying the signal. Pièce d'horlogerie selon la revendication 5, caractérisée en ce que les pistes de connexion électrique (16a,16b) sont structurées dans la même couche que celle formant l'antenne (14).Timepiece according to claim 5, characterized in that the electrical connection tracks (16a, 16b) are structured in the same layer as that forming the antenna (14). Pièce d'horlogerie selon l'une des revendications précédentes, caractérisée en ce que ladite antenne (14) est constituée par deux branches (14a,14b) de forme partiellement circulaire, respectivement reliées à l'une de leurs extrémités (14c) aux connexions électriques (16a,16b), et à leur autre extrémité (14d), l'une à l'autre, par une boucle (18).Timepiece according to one of the preceding claims, characterized in that said antenna (14) consists of two branches (14a, 14b) of partially circular shape, respectively connected at one of their ends (14c) to the connections electrical (16a, 16b), and at their other end (14d), to each other, by a loop (18). Pièce d'horlogerie selon l'une des revendications précédentes, caractérisée en ce qu'elle comporte un plan capacitif (30) ménagé sur une seconde face (20b) de la plaque support (20), opposée à la première face (20a) supportant l'antenne (14).Timepiece according to one of the preceding claims, characterized in that it comprises a capacitive plane (30) formed on a second face (20b) of the support plate (20), opposite to the first face (20a) supporting the antenna (14). Pièce d'horlogerie selon la revendication 8, caractérisé en ce que ledit plan capacitif (30) est formé par un ensemble de stries (32) ménagées de façon adjacente et convergeant vers le centre de la plaque support (20).Timepiece according to claim 8, characterized in that said capacitive plane (30) is formed by a set of grooves (32) formed adjacent and converging towards the center of the support plate (20). Pièce d'horlogerie selon la revendication 9, caractérisée en ce que ledit plan capacitif (30) est formé au droit de l'antenne (14).Timepiece according to claim 9, characterized in that said capacitive plane (30) is formed in line with the antenna (14). Pièce d'horlogerie selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite plaque support (20) est disposée au voisinage du mouvement (4).Timepiece according to any one of the preceding claims, characterized in that said support plate (20) is arranged in the vicinity of the movement (4). Pièce d'horlogerie selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite plaque support (20) est disposée directement au-dessus du mouvement (4).Timepiece according to any one of the preceding claims, characterized in that said support plate (20) is arranged directly above the movement (4). Pièce d'horlogerie selon l'une quelconque des revendications précédentes, caractérisée en ce que l'antenne (14) s'étend le long de la périphérie de la plaque support (20), à l'extérieur du mouvement (4).Timepiece according to any one of the preceding claims, characterized in that the antenna (14) extends along the periphery of the support plate (20), outside the movement (4). Pièce d'horlogerie selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite première face (20a) supportant l'antenne (14) est orientée en regard du mouvement (4).Timepiece according to any one of the preceding claims, characterized in that said first face (20a) supporting the antenna (14) is oriented opposite the movement (4). Pièce d'horlogerie selon la revendication 14, caractérisée en ce que ladite plaque support (20) fait office de cadran.Timepiece according to claim 14, characterized in that said support plate (20) acts as a dial. Pièce d'horlogerie selon la revendication 8, caractérisée en ce que le plan capacitif (30) forme des motifs à caractère ornemental.Timepiece according to claim 8, characterized in that the capacitive plane (30) forms patterns of an ornamental nature.
EP93120193A 1992-12-23 1993-12-15 Timepiece provided with an electromagnetic signal transmitting antenna Expired - Lifetime EP0603721B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH03934/92A CH686107B5 (en) 1992-12-23 1992-12-23 Timepiece including a transmission antenna of an electromagnetic signal.
CH3934/92 1992-12-23

Publications (2)

Publication Number Publication Date
EP0603721A1 true EP0603721A1 (en) 1994-06-29
EP0603721B1 EP0603721B1 (en) 1997-06-11

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ID=4266642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120193A Expired - Lifetime EP0603721B1 (en) 1992-12-23 1993-12-15 Timepiece provided with an electromagnetic signal transmitting antenna

Country Status (6)

Country Link
US (1) US5367502A (en)
EP (1) EP0603721B1 (en)
JP (1) JP3443148B2 (en)
CN (1) CN1034889C (en)
CH (1) CH686107B5 (en)
DE (1) DE69311515T2 (en)

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EP3343451A1 (en) 2016-12-29 2018-07-04 The Swatch Group Research and Development Ltd Portable object comprising a near-field connection device
EP3343450A1 (en) 2016-12-29 2018-07-04 The Swatch Group Research and Development Ltd Portable object comprising a near-field connection device
EP4092493A1 (en) 2021-05-21 2022-11-23 ETA SA Manufacture Horlogère Suisse Wristwatch comprising a near-field communication device

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DE19724708A1 (en) * 1997-06-13 1998-12-17 Junghans Uhren Gmbh Watch with transponder
US6356512B1 (en) * 1998-07-20 2002-03-12 Asulab S.A. Subassembly combining an antenna and position sensors on a same support, notably for a horological piece
JP2003046316A (en) * 2001-08-03 2003-02-14 Seiko Epson Corp Wrist-mounted electronic device provided with contactless data communication function and contactless data communication system
EP1378805B1 (en) * 2002-07-02 2007-01-17 CSEM Centre Suisse d'Electronique et de Microtechnique SA Recherche et Développement Timepiece fitted with an antenna
DE602004004087T2 (en) * 2004-04-24 2007-05-16 Winwatch S.A. METHOD FOR INTEGRATING AT LEAST ONE ELECTRONIC MODULE IN OR ON THE GLASS OF A CLOCK
JP5786555B2 (en) * 2011-02-23 2015-09-30 セイコーエプソン株式会社 ANTENNA DEVICE, ELECTRONIC DEVICE, AND ELECTRONIC WATCH
EP2821863B1 (en) * 2012-02-29 2019-09-25 Seiko Epson Corporation Integral-antenna-type electronic clock
TWI704719B (en) * 2018-05-16 2020-09-11 廣達電腦股份有限公司 Wearable device
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DE29505900U1 (en) * 1995-03-09 1995-06-14 Tamsit Vertriebsgesellschaft M Transceiver unit, in particular for an electronic pocket or wrist watch
EP3343451A1 (en) 2016-12-29 2018-07-04 The Swatch Group Research and Development Ltd Portable object comprising a near-field connection device
EP3343450A1 (en) 2016-12-29 2018-07-04 The Swatch Group Research and Development Ltd Portable object comprising a near-field connection device
EP4092493A1 (en) 2021-05-21 2022-11-23 ETA SA Manufacture Horlogère Suisse Wristwatch comprising a near-field communication device

Also Published As

Publication number Publication date
CH686107GA3 (en) 1996-01-15
DE69311515D1 (en) 1997-07-17
JP3443148B2 (en) 2003-09-02
US5367502A (en) 1994-11-22
JPH06230151A (en) 1994-08-19
CH686107B5 (en) 1996-07-15
DE69311515T2 (en) 1998-01-22
CN1090067A (en) 1994-07-27
CN1034889C (en) 1997-05-14
EP0603721B1 (en) 1997-06-11

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