EP0339482A1 - Time-piece provided with an antenna - Google Patents

Time-piece provided with an antenna Download PDF

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Publication number
EP0339482A1
EP0339482A1 EP89107096A EP89107096A EP0339482A1 EP 0339482 A1 EP0339482 A1 EP 0339482A1 EP 89107096 A EP89107096 A EP 89107096A EP 89107096 A EP89107096 A EP 89107096A EP 0339482 A1 EP0339482 A1 EP 0339482A1
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EP
European Patent Office
Prior art keywords
antenna
housing
coil
messages
electromagnetic field
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
EP89107096A
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German (de)
French (fr)
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EP0339482B1 (en
EP0339482B2 (en
Inventor
Viron Teodoridis
Bernard Joss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
Original Assignee
ETA Manufacture Horlogere Suisse SA
Ebauchesfabrik ETA AG
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Application filed by ETA Manufacture Horlogere Suisse SA, Ebauchesfabrik ETA AG filed Critical ETA Manufacture Horlogere Suisse SA
Priority to DE8916177U priority Critical patent/DE8916177U1/en
Priority to AT89107096T priority patent/ATE64792T1/en
Publication of EP0339482A1 publication Critical patent/EP0339482A1/en
Publication of EP0339482B1 publication Critical patent/EP0339482B1/en
Application granted granted Critical
Publication of EP0339482B2 publication Critical patent/EP0339482B2/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • 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
    • G04B47/02—Installations within mirrors, pictures, furniture or other household articles
    • G04B47/025—Installations within mirrors, pictures, furniture or other household articles in musical instruments or loudspeakers

Definitions

  • the present invention relates to a timepiece capable of being worn on a part of the body having the shape of a cylinder such as the arm or the trunk of this body, said part comprising an antenna capable of picking up an electromagnetic field.
  • Timepieces have already been presented on numerous occasions equipped with an antenna and a micro-receiver for picking up radio signals. If this timepiece is in the form of a wristwatch, the antenna is generally placed in the bracelet as is the case with the embodiments described, for example, in documents FR-A-1 207 640 , EP-A-0 100 639, EP-A-0 125 930, EP-A-0 184 606 and WO-A-86/03645.
  • placing the antenna in the bracelent of a watch poses connection problems between the input of the receiver located in the watch case and the antenna forming part of the strap which is a mobile element, generally articulated on the case. by means of bars.
  • the passage of the antenna conductor therefore poses construction problems which lead to solutions which are never simple.
  • the document FR-A-2 505 105 (US-A-4 419 770) describes an AM radio receiver on the wrist comprising a PLL synthesizer as a local oscillator.
  • This receiver fitted with an electronic watch, is equipped with a rod-shaped antenna mounted in the watch case, this case being rounded to follow the curve of the wrist.
  • the figures accompanying the document clearly show that the bar is directed across the width of the bracelet, which means that the antenna is sensitive to the component of the magnetic field located longitudinally of the cylinder formed by the wrist.
  • this situation is unfavorable, as will appear in the description of the invention which follows.
  • the antenna is arranged and directed to receive either the H component ⁇ of the magnetic field H located tantentially to the cylinder formed by the part of the body on which the watch is worn, either the component E r of the electric field E located radially to said cylinder, or even said components H ⁇ and E r combined together.
  • a capacitive antenna is in the form of two electrodes separated by a dielectric and an inductive antenna in the form of a coil.
  • dielectric is meant here an insulating medium separating the two electrodes, this medium also being able to be air.
  • the polarization of the incident electric field is assumed to be perpendicular to the electrodes of the capacitive antenna while the polarization of the incident magnetic field is assumed to be parallel to the axis of the coil of the inductive antenna.
  • the present invention relates to a timepiece capable of being worn on a part of the human body, it is very important to know the influence of this body on the configuration of the electromagnetic field.
  • the level and the direction of the electromagnetic field are strongly modified in the vicinity of the body, this being mainly due to the fact that the dielectric properties of the human body are very different from those of air.
  • the model is a cylinder 1 having a height of 180 cm and a diameter of 25 cm.
  • the matter of this body is simulated by a solution of glycol ethandiol, distilled water and sodium chloride, so that the dielectric properties of this solution correspond to those of the body.
  • the main object of the present invention immediately results from the manner of incorporating an antenna into a timepiece intended to be worn on a part of the body, whether it is the trunk or the body. forearm of this body, namely that the antenna must be arranged and directed to pick up either the magnetic component H ⁇ of the electromagnetic field located tangentially to the cylinder presented by the body or a part of this body, or the electrical component E r of the same electromagnetic field located radially to said cylinder.
  • FIG. 2 shows on the forearm carrying a wristwatch 4 comprising a housing 2 and a bracelet 3. On this housing act the two predominant fields E r (radial electrical component) and H ⁇ (azimuthal or tangential magnetic component).
  • FIG. 5 shows a human figurine carrying a pendant watch 5 comprising a box 2 attached to a chain 6. On this box also act the two predominant fields E r and H ⁇ .
  • the tangential magnetic field H ⁇ enters the housing by the edge thereof and that the antenna to be provided must consist of a coil having one or more turns , the axis of this coil being arranged parallel to the bottom of the housing.
  • FIG. 3 schematically shows how this inductive antenna is arranged in the case 2 of the watch.
  • the antenna 7, comprising here only a single turn, is connected to a microreceptor 8. It is important to note that in this case, the axis of the coil, in addition that it is arranged parallel to the bottom of the housing , must be arranged parallel to the longitudinal direction of the bracelet 3.
  • FIG. 5 shows that the axis of the inductive antenna, not shown, in addition to being placed parallel to the bottom of the case, must be placed perpendicular to the vertical of the wire to be lead.
  • FIGS. 6 and 7 This first embodiment of the invention which consists in capturing the tangential magnetic component of the electromagnetic field and which has been explained above in principle, is illustrated by a practical construction shown in FIGS. 6 and 7.
  • Figure 6 is a plan view of a wristwatch comprising a case 2 and a bracelet 3 and Figure 7 is a section along line VII-VII of Figure 6.
  • This watch is subjected to the tangential magnetic component H ⁇ .
  • the watch includes an inductive antenna 7, formed here of five turns 11, each consisting of two sections 9 and 12 connected end to end by means of connections 13.
  • the first section 12 is a metal wire embedded in the bottom 14 of the housing 2 and the second section 9 is a metallization disposed under the glass 10.
  • These first and second sections are here connected end to end at by means of a flexible connector 13 which may consist of a "zebra" (registered trademark) connector which carries several conductive pads.
  • zebra registered trademark
  • the areas 15 and 16 of the connector 13 are connected to the input of a microreceptor (not shown) which is arranged in the housing 2 in addition to all the organs necessary for displaying the time such as the movement 17, the dial 18 and the hands 19.
  • the system supply battery can be contained in a drawer made laterally in the case or in a hatch made in the bottom. In the latter case, the sections 12 will pass through the cover of the hatch and will be connected to the sections embedded in the bottom by means of connectors also.
  • connection which link the sections together could be welds instead of the proposed connectors.
  • the metallized section 9 could also be on the ice or embedded in it.
  • the section 12 could be only partially embedded in the bottom 14 or even be arranged on the surface of this bottom.
  • Figures 2 and 5 also show that the radial electric field E r enters the housing perpendicular to its glass or to its bottom and that in this case, the antenna to be provided for picking it up must consist of two substantially planar electrodes, separate by a dielectric and arranged parallel to the bottom of the housing.
  • FIG. 4 schematically shows how this capacitive antenna 50 is arranged in the case 2 of the watch.
  • the antenna here comprises two electrodes 20 and 21 which are connected to a microreceptor 8.
  • FIG. 5 shows that the electrodes (not shown) must also be arranged parallel to the crystal or to the bottom of the case.
  • FIGS. 8 and 9 This second embodiment of the invention which consists in capturing the radial electrical component of the electromagnetic field is illustrated by a practical construction shown in FIGS. 8 and 9.
  • FIG. 8 is a plan view of a wristwatch comprising a case 2 and a bracelet 3, and FIG. 9 is a section along the line IX-IX in FIG. 8.
  • This watch is subjected to the radial electrical component E r .
  • the watch has a capacitive antenna made up of electrodes 20 and 21.
  • the first electrode is a peripheral metallization 20 of the glass 10 and the second electrode is a metallic bottom 21 which can be entirely metallic or, as shown in FIG. 9, a metallic sheet affixed on a plastic cover 32.
  • the electrodes 20 and 21 are well disposed parallel to one another and arranged to pick up the radial electrical component E r of the electromagnetic field.
  • the electrodes are supported on a middle part 33 made of insulating material.
  • the electrodes 20 and 21 are connected to the input of a microreceptor (not shown) which is arranged in the housing 2 in addition to all the organs necessary for displaying the time such as the movement 17, the dial 18 and the needles 19.
  • a microreceptor (not shown) which is arranged in the housing 2 in addition to all the organs necessary for displaying the time such as the movement 17, the dial 18 and the needles 19.
  • the connections between the electrodes 20 and 21 and the input of the microreceptor could be made by spring supports as has been described, for example, in patent EP-B-0 041 245 (US-A- 4,523,856).
  • the invention is not limited to the particular embodiment described above, the essential point being that the electrode 20 must be located at a certain distance from the electrode 21 and have a certain surface relative to this electrode. 21.
  • the electrode 20 could have a surface substantially identical to the electrode 21 if it were located under the dial 18.
  • this electrode 20 could be the dial itself, surmounted by the needles and possibly pierced with '' a window that would reveal, for example, the message to be transmitted (a telephone number to call back, an appointment date, etc.).
  • the annular electrode 20 shown in FIG. 8 could be split or made in the form of a serpentine.
  • FIG. 10 shows a diagram of possible adaptation of an inductive antenna 7 to the input of a microreceptor 8.
  • This receiver can be that put on the market by the Philips company under the reference UAA 2033. If the inductive antenna includes five turns and is balanced, the adaptation to the input of the receiver will be done by means of capacitors C1 and C2 whose value is of the order of 4pF for each. Other arrangements are also possible depending on whether the antenna and the input of the receiver are balanced or not.

Abstract

La pièce d'horlogerie (4) susceptible d'être portée sur une partie du corps, par exemple au poignet, est pourvue d'une antenne apte à capter un champ électromagnétique porteur de messages radio­diffusés.Des mesures ont montré qu'à proximité du poignet, la composante électrique radiale (E<sub>r</sub>) et la composante magnétique azimutale ou tangentielle (H<sub>φ</sub>) du champ électromagnétique étaient prédominantes. En conséquence, pour capter la première, on disposera une antenne capacitive dont les électrodes sont parallèles au fond du boîtier (2) de la pièce d'horlogerie et, pour capter la seconde, on dispose­ra une antenne inductive comportant une bobine dont l'axe est parallèle à la direction longitudinale du bracelet (3).The timepiece (4) capable of being worn on a part of the body, for example on the wrist, is provided with an antenna capable of picking up an electromagnetic field carrying broadcast messages. wrist, the radial electrical component (E <sub> r </sub>) and the azimuthal or tangential magnetic component (H <sub> φ </sub>) of the electromagnetic field were predominant. Consequently, to capture the first, we will have a capacitive antenna whose electrodes are parallel to the bottom of the case (2) of the timepiece and, to capture the second, we will have an inductive antenna comprising a coil whose axis is parallel to the longitudinal direction of the bracelet (3).

Description

La présente invention est relative à une pièce d'horlogerie susceptible d'être portée sur une partie du corps présentant la forme d'un cylindre tel que le bras ou le tronc de ce corps, ladite pièce comportant une antenne apte à capter un champ électromagné­tique porteur de messages radiodiffusés et un boîtier composé au moins d'une glace et d'un fond, ledit boîtier comprenant, outre des organes nécessaires à l'affichage de l'heure, un microrécepteur recevant les messages captés par l'antenne pour transformer ces messages en des données perceptibles par le porteur de la pièce d'horlogerie.The present invention relates to a timepiece capable of being worn on a part of the body having the shape of a cylinder such as the arm or the trunk of this body, said part comprising an antenna capable of picking up an electromagnetic field. carrying radio messages and a box composed at least of a glass and a bottom, said box comprising, in addition to the organs necessary for displaying the time, a microreceiver receiving the messages picked up by the antenna to transform these messages in data perceptible by the wearer of the timepiece.

On a déjà présenté à maintes reprises des pièces d'horlogerie équipées d'une antenne et d'un microrécepteur pour capter des signaux radiodiffusés. Si cette pièce d'horlogerie se présente sous la forme d'une montre-bracelet, l'antenne est généralement placée dans le bracelet comme c'est le cas des réalisations décrites, par exemple, dans les documents FR-A-1 207 640, EP-A-0 100 639, EP-A-0 125 930, EP-A-0 184 606 et WO-A-86/03645. Or, placer l'anten­ne dans le bracelent d'une montre pose des problèmes de connexions entre l'entrée du récepteur situé dans le boîtier de la montre et l'antenne faisant partie du bracelet lequel est un élément mobile, généralement articulé sur le boîtier au moyen de barrettes. Le passage du conducteur antenne pose donc des problèmes de construc­tion qui amènent à des solutions qui ne sont jamais simples. A l'endroit de ce passage, les conducteurs sont sollicités mécanique­ment et peuvent se rompre à plus ou moins brève échéance, si des moyens ne sont pas mis en oeuvre pour éviter cette rupture. Les moyens sont onéreux et compliquent le changement du bracelet, un bracelet d'ailleurs qui doit être réalisé spécialement puisqu'il porte une antenne et qui ne peut donc pas être échangé avec un bracelet existant couramment sur le marché.Timepieces have already been presented on numerous occasions equipped with an antenna and a micro-receiver for picking up radio signals. If this timepiece is in the form of a wristwatch, the antenna is generally placed in the bracelet as is the case with the embodiments described, for example, in documents FR-A-1 207 640 , EP-A-0 100 639, EP-A-0 125 930, EP-A-0 184 606 and WO-A-86/03645. However, placing the antenna in the bracelent of a watch poses connection problems between the input of the receiver located in the watch case and the antenna forming part of the strap which is a mobile element, generally articulated on the case. by means of bars. The passage of the antenna conductor therefore poses construction problems which lead to solutions which are never simple. At the location of this passage, the conductors are mechanically stressed and can break sooner or later, if means are not used to avoid this break. The means are expensive and complicate the change of the bracelet, a bracelet moreover which must be specially made since it carries an antenna and which therefore cannot be exchanged with a bracelet currently existing on the market.

Incorporer un microrécepteur avec son antenne dans un boîtier porté par une personne est connu de réalisations relativement récentes. Il s'agit par exemple du récepteur mis au point par l'entreprise Motorola et confiné dans un boîtier en forme de stylo­graphe, muni d'une agrafe qui sert à attacher le stylo à une partie de vêtement. Un tel produit est connu sous la marque déposée "Sensar". On connaît également un récepteur de l'entreprise Philips qui se présente sous la forme d'un parallèlipipède allongé et également muni d'une agrafe permettant de l'accrocher à un vêtement. Ce récepteur porte la dénomination "Pager 32 B" et ses dimensions approximatives sont de 10 cm pour la longueur et de 2 cm pour la largeur et l'épaisseur.Incorporating a microreceptor with its antenna in a housing carried by a person is known to relatively recent achievements. This is for example the receiver developed by Motorola company and confined in a box in the shape of a stylograph, provided with a clip which is used to attach the pen to a part of clothing. Such a product is known under the registered trademark "Sensar". There is also known a receiver from the company Philips which is in the form of an elongated parallelepiped and also provided with a clip allowing it to be hung on a garment. This receiver is called "Pager 32 B" and its approximate dimensions are 10 cm in length and 2 cm in width and thickness.

Les récepteurs dont on vient de parler ont des dimensions suffisamment grandes pour que l'incorporation d'une antenne ne pose pas de problèmes insurmontables. Or, on admettra qu'incorporer une antenne dans un boîtier de pièce d'horlogerie susceptible d'être portée sur une partie du corps, par exemple une montre-bracelet ou une montre pendentif, pose des problèmes bien plus difficiles à résoudre à cause de l'espace très limité qui est à disposition pour le montage de l'antenne.The receivers of which we have just spoken have sufficiently large dimensions that the incorporation of an antenna does not pose insurmountable problems. However, it will be admitted that incorporating an antenna into a timepiece case capable of being worn on a part of the body, for example a wristwatch or a pendant watch, poses problems much more difficult to solve because of the very limited space available for mounting the antenna.

Des tentatives ont cependant été faites pour résoudre ce pro­blème. Ainsi, le document FR-A-2 505 105 (US-A-4 419 770) décrit un récepteur radio AM de poignet comportant un synthétiseur PLL comme oscillateur local. Ce récepteur, muni d'une montre électronique, est équipé d'une antenne en forme de barreau monté dans le boîtier de la montre, ce boîtier étant arrondi pour épouser la courbe du poignet. Les figures accompagnant le document montrent manifestement que le barreau est dirigé dans le sens de la largeur du bracelet, ce qui fait que l'antenne est sensible à la composante du champ magnétique située longitudinalement au cylindre que forme le poignet. Or cette situation est défavorable, comme cela apparaîtra dans la description de l'invention qui va suivre.Attempts have, however, been made to resolve this problem. Thus, the document FR-A-2 505 105 (US-A-4 419 770) describes an AM radio receiver on the wrist comprising a PLL synthesizer as a local oscillator. This receiver, fitted with an electronic watch, is equipped with a rod-shaped antenna mounted in the watch case, this case being rounded to follow the curve of the wrist. The figures accompanying the document clearly show that the bar is directed across the width of the bracelet, which means that the antenna is sensitive to the component of the magnetic field located longitudinally of the cylinder formed by the wrist. However, this situation is unfavorable, as will appear in the description of the invention which follows.

L'abrégé anglais du document JP-A-52-48 364 paru dans "Patent Abstracts of Japan", vol. 1, No 116, 4 octobre 1977, page 4486 E77, décrit une pièce d'horlogerie sous la glace de laquelle est placée une antene unifilaire. On a pu constater cependant qu'une telle antenne est inefficace dans le domaine des fréquences considérées ci-après, si elle n'est pas associée à un autre élément conducteur pour former une antenne capacitive sensible à la composante du champ électrique située radialement au cylindre que forme le poignet.The English abstract of document JP-A-52-48 364 published in "Patent Abstracts of Japan", vol. 1, No. 116, October 4, 1977, page 4486 E77, describes a timepiece under the glass of which is placed a single-wire antenna. However, it has been observed that such an antenna is ineffective in the frequency range considered below, if it is not associated with another conductive element to form a capacitive antenna sensitive to the component of the electric field located radially to the cylinder. that forms the wrist.

Pour obtenir un signal confortable à l'entrée du microrécepteur, il s'agira donc de prendre certaines précautions qui font l'objet de la présente invention qui est caractérisée par le fait que l'antenne est arrangée et dirigée pour capter soit le composante Hφ du champ magnétique H située tantentiellement au cylindre formé par la partie du corps sur laquelle la montre est portée, soit la composante Er du champ électrique E située radialement audit cylindre, soit encore lesdites composantes Hφ et Er combinées entre elles.To obtain a comfortable signal at the input of the microreceptor, it will therefore be necessary to take certain precautions which are the subject of the present invention which is characterized by the fact that the antenna is arranged and directed to receive either the H component φ of the magnetic field H located tantentially to the cylinder formed by the part of the body on which the watch is worn, either the component E r of the electric field E located radially to said cylinder, or even said components H φ and E r combined together.

L'invention sera mieux comprise maintenant à la lecture de la description qui va suivre, en se référant au dessin qui l'illustre, à titre d'exemple, et dans lequel :

  • la figure 1 est une vue schématique simulant le corps humain ou une partie de ce corps et montre deux composantes du champ électro­magnétique à proximité de ce corps,
  • la figure 2 montre un poignet portant une montre-bracelet ainsi que deux composantes du champ électromagnétique agissant sur cette montre,
  • la figure 3 montre comment est disposée une antenne inductive dans la montre-bracelet de l'invention,
  • la figure 4 montre comment est disposée une antenne capacitive dans la montre-bracelet de l'invention,
  • la figure 5 montre un homme portant une montre pendentif ainsi que deux composantes du champ électromagnétique agissant sur cette montre,
  • la figure 6 est une vue de dessus d'une montre-bracelet selon un premier mode d'exécution de l'invention,
  • la figure 7 est une coupe selon la ligne VII-VII de la figure 6,
  • la figure 8 est une vue de dessus d'une montre-bracelet selon un second mode d'exécution de l'invention,
  • la figure 9 est une coupe selon la ligne IX-IX de la figure 8, et
  • la figure 10 est un schéma électrique simplifié montrant un exemple d'adaptation de l'antenne à un microrécepteur.
The invention will be better understood now on reading the description which follows, with reference to the drawing which illustrates it, by way of example, and in which:
  • FIG. 1 is a schematic view simulating the human body or a part of this body and shows two components of the electromagnetic field close to this body,
  • FIG. 2 shows a wrist carrying a wristwatch as well as two components of the electromagnetic field acting on this watch,
  • FIG. 3 shows how an inductive antenna is arranged in the wristwatch of the invention,
  • FIG. 4 shows how a capacitive antenna is arranged in the wristwatch of the invention,
  • FIG. 5 shows a man wearing a pendant watch and two components of the electromagnetic field acting on this watch,
  • FIG. 6 is a top view of a wristwatch according to a first embodiment of the invention,
  • FIG. 7 is a section along line VII-VII of FIG. 6,
  • FIG. 8 is a top view of a wristwatch according to a second embodiment of the invention,
  • FIG. 9 is a section along the line IX-IX of FIG. 8, and
  • FIG. 10 is a simplified electrical diagram showing an example of adaptation of the antenna to a microreceptor.

On connait les lois qui régissent la propagation du champ électromagnétique dans le vide. Elles sont exprimées par les équa­tions de Maxwell qui lient les composantes magnétiques et électri­ques du champ électromagnétique, composantes qui sont orthogonales l'une à l'autre. Ces équations enseignent qu'un champ électrique variable dans le temps engendre un champ magnétique tournant et inversément. Il résulte de cela que la composante électrique du champ pourra être captée par une antenne capacitive alors que la composante magnétique pourra l'être par une antenne inductive. Une antenne capacitive se présente sous la forme de deux électrodes séparées par un diélectrique et une antenne inductive sous la forme d'une bobine. Par diélectrique, il faut entendre ici un milieu isolant séparant les deux électrodes, ce milieu pouvant aussi être de l'air. La polarisation du champ électrique incident est supposée perpendiculaire aux électrodes de l'antenne capacitive alors que la polarisation du champ magnétique incident est supposée parallèle à l'axe de la bobine de l'antenne inductive.We know the laws that govern the propagation of the electromagnetic field in a vacuum. They are expressed by Maxwell's equations which link the magnetic and electrical components of the electromagnetic field, components which are orthogonal to each other. These equations teach that a time-varying electric field generates a rotating magnetic field and vice versa. It follows from this that the electric component of the field can be picked up by a capacitive antenna while the magnetic component can be picked up by an inductive antenna. A capacitive antenna is in the form of two electrodes separated by a dielectric and an inductive antenna in the form of a coil. By dielectric is meant here an insulating medium separating the two electrodes, this medium also being able to be air. The polarization of the incident electric field is assumed to be perpendicular to the electrodes of the capacitive antenna while the polarization of the incident magnetic field is assumed to be parallel to the axis of the coil of the inductive antenna.

La présente invention étant relative à une pièce d'horlogerie susceptible d'être portée sur une partie du corps humain, il est très important de connaître l'influence de ce corps la configu­ration du champ électromagnétique. Or, on a constaté que, pour les fréquences situées dans la bande VHF (30 à 300 MHz) et au début au moins de la bande UHF (300 à 3000 MHz), le niveau et la direction du champ électromagnétique sont fortement modifiés au voisinage du corps, ceci étant dû principalement au fait que les propriétés diélectriques du corps humain sont très différentes de celles de l'air.As the present invention relates to a timepiece capable of being worn on a part of the human body, it is very important to know the influence of this body on the configuration of the electromagnetic field. However, it was found that, for the frequencies located in the VHF band (30 to 300 MHz) and at least at the start of the UHF band (300 to 3000 MHz), the level and the direction of the electromagnetic field are strongly modified in the vicinity of the body, this being mainly due to the fact that the dielectric properties of the human body are very different from those of air.

On a entrepris l'étude du champ électromagnétique au voisinage du corps humain en modélisant ce corps comme cela est représenté en figure 1. Le modèle est un cylindre 1 ayant une hauteur de 180 cm et un diamètre de 25 cm. La matière de ce corps est simulée par une solution de glycol ethandiol, d'eau distillée et de chlorure de sodium, de telle façon que les propriétés diélectriques de cette solution correspondent à celles du corps.We began the study of the electromagnetic field in the vicinity of the human body by modeling this body as shown in Figure 1. The model is a cylinder 1 having a height of 180 cm and a diameter of 25 cm. The matter of this body is simulated by a solution of glycol ethandiol, distilled water and sodium chloride, so that the dielectric properties of this solution correspond to those of the body.

De très nombreuses mesures, effectuées dans le cadre de cette invention, ont permis d'établir les trois conclusions suivantes si l'on irradie le modèle par un champ de polarisation verticale :
- à une distance r < 15 cm de la surface du corps, le champ électrique est essentiellement radial, c'est-à-dire perpendiculaire à la peau. On appellera Er ce champ électrique.
- à une distance r < 15 cm de la surface du corps, le champ magnétique est essentiellement azimutal ou tangentiel, c'est-à-dire tournant autour du corps. On appellera Hφ ce champ magnétique.
- les composantes Er et Hφ du champ électromagnétique ne dépendent quasiment pas de l'angle φ, ce qui implique un rayonnement quasiment omnidirectionnel dans le plan perpendiculaire au corps.Many measurements, carried out within the framework of this invention, made it possible to establish the following three conclusions if one irradiates the model by a field of vertical polarization:
- at a distance r <15 cm from the surface of the body, the electric field is essentially radial, that is to say perpendicular to the skin. We will call E r this electric field.
- at a distance r <15 cm from the surface of the body, the magnetic field is essentially azimuth or tangential, that is to say rotating around the body. We will call H φ this magnetic field.
- the components E r and H φ of the electromagnetic field almost do not depend on the angle φ, which implies an almost omnidirectional radiation in the plane perpendicular to the body.

Le terme essentiellement utilisé ci-dessus laisse entendre qu'il existe d'autres directions du champ électromagnétique que celles considérées, pour lesquelles on mesure des valeurs de moins grande amplitude que celles des directions privilégiées Er et Hφ. Ce sont en particulier les directions radiale et longitudinale pour le champ magnétique et les directions tangentielle et longitudinale pour le champ électrique, la direction longitudinale étant celle qui est parallèle à l'axe Z du corps. Ainsi, pour prendre un exemple chif­fré, on a mesuré un niveau de champ magnétique tangentiel Hφ de 6 à 8 dB supérieur au niveau présenté par le champ magnétique radial.The term essentially used above suggests that there are other directions of the electromagnetic field than those considered, for which values of lesser amplitude are measured than those of the preferred directions E r and H φ . These are in particular the radial and longitudinal directions for the magnetic field and the tangential and longitudinal directions for the electric field, the longitudinal direction being that which is parallel to the axis Z of the body. Thus, to take a numerical example, we measured a tangential magnetic field level H φ from 6 to 8 dB higher than the level presented by the radial magnetic field.

Des mesures semblables à celles qui ont été mentionnées ci-­dessus ont été répétées, non plus sur le corps ou le tronc humain, mais sur l'avant-bras ou poignet pour plusieurs positions du bras par rapport au corps. Toutes les positions, sauf une, ont donné des résultats identiques aux résultats précédemment obtenus et ont donc confirmé la prédominance des champs Er et Hφ pour le poignet éga­lement. La position qui fait exception est celle où le bras est replié contre la poitrine. Dans ce cas particulier, c'est la compo­sante longitudinale du champ magnétique qui domine, puisqu'il y a couplage avec la composante tangentielle Hφ apportée par le tronc du corps. Dans ce cas particulier cependant, la composante Er demeure.Measurements similar to those mentioned above were repeated, no longer on the human body or trunk, but on the forearm or wrist for several positions of the arm relative to the body. All the positions, except one, gave identical results to the previously obtained results and therefore confirmed the predominance of the fields E r and H φ for the wrist as well. The exception is the position where the arm is folded against the chest. In this particular case, it is the longitudinal component of the magnetic field which dominates, since there is coupling with the tangential component H φ brought by the trunk of the body. In this particular case, however, the component E r remains.

Des importantes considérations qui précèdent résulte immédiate­ment l'objet principal de la présente invention sur la manière d'incorporer une antenne à une pièce d'horlogerie destinée à être portée sur une partie du corps, qu'il s'agisse du tronc ou de l'avant-bras de ce corps, à savoir que l'antenne doit être arrangée et dirigée pour capter soit la composante magnétique Hφ du champ électromagnétique située tangentiellement au cylindre présenté par le corps ou une partie de ce corps, soit la composante électrique Er du même champ électromagnétique située radialement audit cylindre.From the foregoing important considerations, the main object of the present invention immediately results from the manner of incorporating an antenna into a timepiece intended to be worn on a part of the body, whether it is the trunk or the body. forearm of this body, namely that the antenna must be arranged and directed to pick up either the magnetic component H φ of the electromagnetic field located tangentially to the cylinder presented by the body or a part of this body, or the electrical component E r of the same electromagnetic field located radially to said cylinder.

La figure 2 présente au avant-bras portant une montre-bracelet 4 comportant un boîtier 2 et un bracelet 3. Sur ce boîtier agissent les deux champs prédominants Er (composante électrique radiale) et Hφ (composante magnétique azimutale ou tangentielle).FIG. 2 shows on the forearm carrying a wristwatch 4 comprising a housing 2 and a bracelet 3. On this housing act the two predominant fields E r (radial electrical component) and H φ (azimuthal or tangential magnetic component).

La figure 5 présente une figurine humaine portant une montre pendentif 5 comportant un boîtier 2 attaché à une chaîne 6. Sur ce boîtier agissent également les deux champs prédominants Er et Hφ.FIG. 5 shows a human figurine carrying a pendant watch 5 comprising a box 2 attached to a chain 6. On this box also act the two predominant fields E r and H φ .

On comprendra que dans les deux cas présentés en figures 2 et 5, le champ magnétique tangentiel Hφ pénètre dans le boîtier par la tranche de celui-ci et que l'antenne à prévoir devra être constituée d'une bobine présentant une ou plusieurs spires, l'axe de cette bobine étant disposé parallèlement au fond du boîtier.It will be understood that in the two cases presented in Figures 2 and 5, the tangential magnetic field H φ enters the housing by the edge thereof and that the antenna to be provided must consist of a coil having one or more turns , the axis of this coil being arranged parallel to the bottom of the housing.

Dans le cas de la montre-bracelet, la figure 3 montre de façon schématique comment est disposée cette antenne inductive dans le boîtier 2 de la montre. L'antenne 7, ne comprenant ici qu'une seule spire, est connectée à un microrécepteur 8. Il est important de noter que dans ce cas, l'axe de la bobine, en plus qu'il est disposé parallèlement au fond du boîtier, doit être disposé parallèlement à la direction longitudinale du bracelet 3.In the case of the wristwatch, FIG. 3 schematically shows how this inductive antenna is arranged in the case 2 of the watch. The antenna 7, comprising here only a single turn, is connected to a microreceptor 8. It is important to note that in this case, the axis of the coil, in addition that it is arranged parallel to the bottom of the housing , must be arranged parallel to the longitudinal direction of the bracelet 3.

Dans le cas de la montre pendentif, la figure 5 fait apparaître que l'axe de l'antenne inductive, non représentée, en plus qu'il doit être disposé parallèlement au fond du boîtier, doit être disposé perpendiculairement à la verticale du fil à plomb.In the case of the pendant watch, FIG. 5 shows that the axis of the inductive antenna, not shown, in addition to being placed parallel to the bottom of the case, must be placed perpendicular to the vertical of the wire to be lead.

Ce premier mode d'exécution de l'invention qui consiste à capter la composante magnétique tangentielle du champ électromagnétique et qui a été expliqué ci-dessus dans son principe, est illustré par une construction pratique montrée en figures 6 et 7.This first embodiment of the invention which consists in capturing the tangential magnetic component of the electromagnetic field and which has been explained above in principle, is illustrated by a practical construction shown in FIGS. 6 and 7.

La figure 6 est une vue en plan d'une montre bracelet comprenant un boîtier 2 et un bracelet 3 et la figure 7 est une coupe selon la ligne VII-VII de la figure 6. Cette montre est soumise à la compo­sante magnétique tangentielle Hφ. Pour capter cette composante, la montre comporte une antenne inductive 7, formée ici de cinq spires 11, constituée chacune de deux tronçons 9 et 12 reliés bout à bout au moyen de connexions 13. Comme le montre la figure 7, le premier tronçon 12 est un fil métallique noyé dans le fond 14 du boîtier 2 et le second tronçon 9 est une métallisation disposée sous la glace 10. Ces premier et second tronçons sont ici reliés bout à bout au moyen d'un connecteur souple 13 qui peut consister en un connecteur "zébra" (marque déposée) qui porte plusieurs plages conductrices. Les plages 15 et 16 du connecteur 13 sont reliées à l'entrée d'un microrécepteur (non représenté) qui est disposé dans le boîtier 2 en plus de tous les organes nécessaires à l'affichage de l'heure comme le mouvement 17, le cadran 18 et les aiguilles 19. La pile d'alimen­tation du système peut être contenue dans un tiroir pratiqué latéra­lement dans le boîtier ou encore dans une trappe pratiquée dans le fond. Dans ce dernier cas, les tronçons 12 traverseront le couvercle de la trappe et seront reliés aux tronçons noyés dans le fond au moyen de connecteurs également.Figure 6 is a plan view of a wristwatch comprising a case 2 and a bracelet 3 and Figure 7 is a section along line VII-VII of Figure 6. This watch is subjected to the tangential magnetic component H φ . To receive this component, the watch includes an inductive antenna 7, formed here of five turns 11, each consisting of two sections 9 and 12 connected end to end by means of connections 13. As shown in FIG. 7, the first section 12 is a metal wire embedded in the bottom 14 of the housing 2 and the second section 9 is a metallization disposed under the glass 10. These first and second sections are here connected end to end at by means of a flexible connector 13 which may consist of a "zebra" (registered trademark) connector which carries several conductive pads. The areas 15 and 16 of the connector 13 are connected to the input of a microreceptor (not shown) which is arranged in the housing 2 in addition to all the organs necessary for displaying the time such as the movement 17, the dial 18 and the hands 19. The system supply battery can be contained in a drawer made laterally in the case or in a hatch made in the bottom. In the latter case, the sections 12 will pass through the cover of the hatch and will be connected to the sections embedded in the bottom by means of connectors also.

L'invention n'est pas limitée au mode d'exécution spécifique décrit ci-dessus. Ainsi, les connexions qui lient les tronçons entre eux pourraient être des soudures au lieu des connecteurs proposés. Le tronçon métallisé 9 pourrait aussi l'être sur la glace ou noyé dans celle-ci. De même, le tronçon 12 pourrait n'être noyé que partiellement dans le fond 14 ou même être disposé à la surface de ce fond.The invention is not limited to the specific embodiment described above. Thus, the connections which link the sections together could be welds instead of the proposed connectors. The metallized section 9 could also be on the ice or embedded in it. Similarly, the section 12 could be only partially embedded in the bottom 14 or even be arranged on the surface of this bottom.

Les figures 2 et 5 montrent aussi que le champ électrique radial Er pénètre dans le boîtier perpendiculairement à sa glace ou à son fond et que dans ce cas, l'antenne à prévoir pour le capter devra être constituée de deux électrodes sensiblement planes, séparées par un diélectrique et disposées parallèlement au fond du boîtier.Figures 2 and 5 also show that the radial electric field E r enters the housing perpendicular to its glass or to its bottom and that in this case, the antenna to be provided for picking it up must consist of two substantially planar electrodes, separate by a dielectric and arranged parallel to the bottom of the housing.

Dans le cas de la montre-bracelet, la figure 4 montre de façon schématique comment est disposée cette antenne capacitive 50 dans le boîtier 2 de la montre. L'antenne comporte ici deux électrodes 20 et 21 qui sont connectées à un microrécepteur 8.In the case of the wristwatch, FIG. 4 schematically shows how this capacitive antenna 50 is arranged in the case 2 of the watch. The antenna here comprises two electrodes 20 and 21 which are connected to a microreceptor 8.

Dans le cas de la montre pendentif, la figure 5 fait apparaître que les électrodes (non représentées) devront aussi être disposées parallèlement à la glace ou au fond du boîtier.In the case of the pendant watch, FIG. 5 shows that the electrodes (not shown) must also be arranged parallel to the crystal or to the bottom of the case.

Ce second mode d'exécution de l'invention qui consiste à capter la composante électrique radiale du champ électromagnétique est illustrée par une construction pratique montrée en figures 8 et 9.This second embodiment of the invention which consists in capturing the radial electrical component of the electromagnetic field is illustrated by a practical construction shown in FIGS. 8 and 9.

La figure 8 est une vue en plan d'une montre-bracelet comportant un boîtier 2 et un bracelet 3, et la figure 9 est une coupe selon la ligne IX-IX de la figure 8. Cette montre est soumise à la composante électrique radiale Er. Pour capter cette composante, la montre comporte une antenne capacitive constituée des électrodes 20 et 21. La première électrode est une métallisation périphérique 20 de la glace 10 et la seconde électrode est un fond métallique 21 qui peut être entièrement métallique ou, comme le montre la figure 9, une feuille métallique apposée sur un couvercle 32 en matière plastique. Ainsi les électrodes 20 et 21 sont bien disposées parallèlement l'une à l'autre et arrangées pour capter la composante électrique radiale Er du champ électromagnétique. Les électrodes s'appuient sur une carrure 33 réalisée en matériau isolant. Les électrodes 20 et 21 sont reliées à l'entrée d'un microrécepteur (non représenté) qui est disposé dans le boîtier 2 en plus de tous les organes nécessaires à l'affichage de l'heure comme le mouvement 17, le cadran 18 et les aiguilles 19. Les liaisons entre les électrodes 20 et 21 et l'entrée du microrécepteur pourraient être réalisées par des appuis à ressort comme cela a été décrit, par exemple, dans le brevet EP-B-0 041 245 (US-A-4 523 856).FIG. 8 is a plan view of a wristwatch comprising a case 2 and a bracelet 3, and FIG. 9 is a section along the line IX-IX in FIG. 8. This watch is subjected to the radial electrical component E r . To capture this component, the watch has a capacitive antenna made up of electrodes 20 and 21. The first electrode is a peripheral metallization 20 of the glass 10 and the second electrode is a metallic bottom 21 which can be entirely metallic or, as shown in FIG. 9, a metallic sheet affixed on a plastic cover 32. Thus the electrodes 20 and 21 are well disposed parallel to one another and arranged to pick up the radial electrical component E r of the electromagnetic field. The electrodes are supported on a middle part 33 made of insulating material. The electrodes 20 and 21 are connected to the input of a microreceptor (not shown) which is arranged in the housing 2 in addition to all the organs necessary for displaying the time such as the movement 17, the dial 18 and the needles 19. The connections between the electrodes 20 and 21 and the input of the microreceptor could be made by spring supports as has been described, for example, in patent EP-B-0 041 245 (US-A- 4,523,856).

L'invention n'est pas limitée au mode d'exécution particulier décrit ci-dessus, l'essentiel étant que l'électrode 20 doit se situer à une certaine distance de l'électrode 21 et présenter une certaine surface par rapport à cette électrode 21. Ainsi, l'élec­trode 20 pourrait avoir une surface sensiblement identique à l'élec­trode 21 si elle était située sous le cadran 18. Dans certains cas, cette électrode 20 pourrait être le cadran lui-même, surmonté des aiguilles et percé éventuellement d'un guichet qui laisserait apparaître, par exemple, le message à transmettre (un numéro de téléphone à rappeler, une date de rendez-vous, etc.). De même, l'électrode annulaire 20 montrée en figure 8 pourrait être fendue ou réalisée en forme de serpentin.The invention is not limited to the particular embodiment described above, the essential point being that the electrode 20 must be located at a certain distance from the electrode 21 and have a certain surface relative to this electrode. 21. Thus, the electrode 20 could have a surface substantially identical to the electrode 21 if it were located under the dial 18. In certain cases, this electrode 20 could be the dial itself, surmounted by the needles and possibly pierced with '' a window that would reveal, for example, the message to be transmitted (a telephone number to call back, an appointment date, etc.). Likewise, the annular electrode 20 shown in FIG. 8 could be split or made in the form of a serpentine.

La figure 10 montre un schéma d'adaptation possible d'une antenne inductive 7 à l'entrée d'un microrécepteur 8. Ce récepteur peut être celui mis sur le marché par le Société Philips sous la référence UAA 2033. Si l'antene inductive comprend cinq spires et est équilibrée, l'adaptation à l'entrée du récepteur se fera au moyen des condensateurs C₁ et C₂ dont la valeur est de l'ordre de 4pF pour chacun. D'autres arrangements sont également possibles selon que l'antenne et que l'entrée du récepteur sont équilibrées ou non.FIG. 10 shows a diagram of possible adaptation of an inductive antenna 7 to the input of a microreceptor 8. This receiver can be that put on the market by the Philips company under the reference UAA 2033. If the inductive antenna includes five turns and is balanced, the adaptation to the input of the receiver will be done by means of capacitors C₁ and C₂ whose value is of the order of 4pF for each. Other arrangements are also possible depending on whether the antenna and the input of the receiver are balanced or not.

On a vu comment capter la composante magnétique Hφ ou la compo­sante électrique Er du champ électromagnétique au moyen, respective­ment, d'une antenne inductive ou d'une antenne capacitive. Il va de soi que la présente invention n'est pas limitée à capter l'une de ces composantes à l'exclusion de l'autre et qu'on pourrait très bien capter les deux composantes à la fois, l'une n'allant d'ailleurs pas sans l'autre. Dans ce cas, on équiperait la pièce d'horlogerie d'une antenne capacitive et d'une antenne inductive réalisées selon la description qui en a été donnée plus haut. On comprendra qu'un tel arrangement pourrait se montrer avantageux quant à l'amplitude du signal recueilli. On comprendra aussi que si deux antennes sont mises en parallèle, l'une pourra servir de circuit d'accord à l'autre ce qui conduira à une simplification du circuit d'entrée du microrécepteur.We have seen how to capture the magnetic component H φ or the electrical component E r of the electromagnetic field by means, respectively, of an inductive antenna or a capacitive antenna. It goes without saying that the present invention is not limited to picking up one of these components to the exclusion of the other and that one could very well pick up the two components at the same time, one not going besides not without the other. In this case, the timepiece would be equipped with a capacitive antenna and an inductive antenna produced according to the description which was given above. It will be understood that such an arrangement could prove to be advantageous as regards the amplitude of the signal collected. It will also be understood that if two antennas are placed in parallel, one may serve as a tuning circuit for the other, which will lead to a simplification of the input circuit of the microreceptor.

Claims (9)

1. Pièce d'horlogerie susceptible d'être portée sur une partie du corps présentant la forme d'un cylindre (1) tel que le bras ou le tronc de ce corps, ladite pièce comportant une antenne (7, 50) apte à capter un champ électromagnétique comportant un champ magnétique H et un champ électrique E, ledit champ électromagnétique étant porteur de messages radiodiffusés et un boîtier (2) composé au moins d'une glace (10) et d'un fond (14, 32), ledit boîtier comprenant, outre des organes nécessaires à l'affichage de l'heure (17, 18, 19), un microrécepteur (8) recevant les messages captés par l'antenne pour transformer ces messages en des données perceptibles par le porteur de la pièce d'horlogerie, l'antenne étant localisée dans l'espace délimité par le boîtier, caractérisée par le fait que l'antenne (7) est constituée par une bobine comportant au moins une spire (11), ladite bobine étant arrangée et dirigée pour capter la composante Hφ du champ magnétique H située tangentiellement audit cylindre, l'axe de ladite bobine étant disposé parallèlement au fond (14) dudit boîtier.1. Timepiece capable of being worn on a part of the body having the shape of a cylinder (1) such as the arm or the trunk of this body, said part comprising an antenna (7, 50) capable of picking up an electromagnetic field comprising a magnetic field H and an electric field E, said electromagnetic field carrying radio messages and a housing (2) composed at least of a crystal (10) and a bottom (14, 32), said housing comprising, in addition to the organs necessary for displaying the time (17, 18, 19), a microreceptor (8) receiving the messages picked up by the antenna to transform these messages into data perceptible by the wearer of the coin watchmaking, the antenna being located in the space delimited by the housing, characterized in that the antenna (7) is constituted by a coil comprising at least one turn (11), said coil being arranged and directed for capture the component H φ of the magnetic field H located tangentially to said cylin dre, the axis of said coil being arranged parallel to the bottom (14) of said housing. 2. Pièce d'horlogerie selon la revendication 1, caractérisée par le fait qu'elle est une montre-bracelet (4) et que l'axe de ladite bobine est en outre disposé parallèlement à la direction longitudinale du bracelet (3).2. Timepiece according to claim 1, characterized in that it is a wristwatch (4) and that the axis of said coil is further arranged parallel to the longitudinal direction of the bracelet (3). 3. Pièce d'horlogerie selon la revendication 1, caractérisée par le fait qu'elle est une montre pendentif (5) et que l'axe de ladite bobine est en outre disposé perpendiculairement à la verti­cale du fil à plomb.3. Timepiece according to claim 1, characterized in that it is a pendant watch (5) and that the axis of said coil is further arranged perpendicular to the vertical of the plumb line. 4. Pièce d'horlogerie selon la revendication 1, caractérisée par le fait que la spire comporte plusieurs tronçons (9, 12) reliés bout à bout au moyen de connexions (13).4. Timepiece according to claim 1, characterized in that the turn comprises several sections (9, 12) connected end to end by means of connections (13). 5. Pièce d'horlogerie selon la revendication 4, caractérisée par le fait que la spire comporte un premier tronçon (12) noyé dans le fond (14) du boîtier et un second tronçon (9) métallisé sous la glace (10), les premier et second tronçons étant reliés bout à bout au moyen de connecteurs souples (13) situés entre la glace et le fond.5. Timepiece according to claim 4, characterized in that the turn comprises a first section (12) embedded in the bottom (14) of the housing and a second section (9) metallized under the glass (10), the first and second sections being connected end to end by means of flexible connectors (13) located between the glass and the bottom. 6. Pièce d'horlogerie susceptible d'être portée sur une partie du corps présentant la forme d'un cylindre (1) tel que le bras ou le tronc de ce corps, ladite pièce comportant une antenne (7, 50) apte à capter un champ électromagnétique comportant un champ magnétique H et un champ électrique E, ledit champ électromagnétique étant porteur de messages radiodiffusés et un boîtier (2) composé au moins d'une glace (10) et d'un fond (14, 32), ledit boîtier comprenant, outre des organes nécessaires à l'affichage de l'heure (17, 18, 19), un microrécepteur (8) recevant les messages captés par l'antenne pour transformer ces messages en des données perceptibles par le porteur de la pièce d'horlogerie, l'antenne étant localisée dans l'espace délimité par le boîtier, caractérisée par le fait que l'antenne (50) est constituée par des première (20) et seconde (21) électrodes sensiblement planes placées parallèlement l'une à l'autre et séparées par un diélectrique, lesdites électrodes étant arrangées et dirigées pour capter la composante Er du champ électrique E située radialement audit cylindre, les plans desdites électrodes étant disposés parallèlement au fond (32) dudit boîtier.6. Timepiece capable of being worn on a part of the body having the shape of a cylinder (1) such as the arm or the trunk of this body, said part comprising an antenna (7, 50) capable of picking up an electromagnetic field comprising a magnetic field H and an electric field E, said electromagnetic field carrying radio messages and a housing (2) composed at least of a crystal (10) and a bottom (14, 32), said housing comprising, in addition to the organs necessary for displaying the time (17, 18, 19), a microreceptor (8) receiving the messages picked up by the antenna to transform these messages into data perceptible by the wearer of the coin watchmaking, the antenna being located in the space delimited by the housing, characterized in that the antenna (50) consists of first (20) and second (21) substantially planar electrodes placed parallel to one to each other and separated by a dielectric, said electrodes being arranged e t directed to capture the component E r of the electric field E located radially to said cylinder, the planes of said electrodes being arranged parallel to the bottom (32) of said housing. 7. Pièce d'horlogerie selon la revendication 6, caractérisée par le fait qu'elle est une montre-bracelent (14) ou une montre pendentif (5) et qu'elle comporte une métallisation apposée sous la glace constituant ladite première électrode (20) et un fond métal­lique constituant ladite seconde électrode (21), le fond et la glace s'appuyant sur une carrure (33) réalisée en matériau isolant.7. Timepiece according to claim 6, characterized in that it is a bracelent watch (14) or a pendant watch (5) and that it comprises a metallization affixed under the glass constituting said first electrode (20 ) and a metal bottom constituting said second electrode (21), the bottom and the glass resting on a middle part (33) made of insulating material. 8. Pièce d'horlogerie susceptible d'être portée sur une partie du corps présentant la forme d'un cylindre (1) tel que le bras ou le tronc de ce corps, ladite pièce comportant une antenne (7, 50) apte à capter un champ électromagnétique comportant un champ magnétique H et un champ électrique E, ledit champ électromagnétique étant porteur de messages radiodiffusés et un boîtier (2) composé au moins d'une glace (10) et d'un fond (14, 32), ledit boîtier comprenant, outre des organes nécessaires à l'affichage de l'heure (17, 18, 19), un microrécepteur (8) recevant les messages captés par l'antenne pour transformer ces messages en des données perceptibles par le porteur de la pièce d'horlogerie, l'antenne étant localisée dans l'espace délimité par le boîtier, caractérisée par le fait que l'antenne est constituée par la combinaison d'une bobine comportant au moins une spire (11), ladite bobine étant arrangée et dirigée pour capter le composante Hφ du champ magnétique H située tangen­tiellement audit cylindre, l'axe de ladite bobine étant disposé parallèlement au fond (14) dudit boîtier et de première (20) et seconde (21) électrodes sensiblement planes placées parallèlement l'une à l'autre et séparées par un diélectrique, lesdites électrodes étant arrangées et dirigées pour capter la composante Er du champ électrique E située radialement audit cylindre, les plans desdites électrodes étant disposés parallèlement au fond (32) dudit boîtier.8. Timepiece capable of being worn on a part of the body having the shape of a cylinder (1) such as the arm or the trunk of this body, said part comprising an antenna (7, 50) capable of picking up an electromagnetic field comprising a magnetic field H and an electric field E, said electromagnetic field carrying radio messages and a housing (2) composed at least of a crystal (10) and a bottom (14, 32), said housing comprising, in addition to the organs necessary for displaying the time (17, 18, 19), a microreceptor (8) receiving the messages picked up by the antenna to transform these messages into data perceptible by the wearer of the coin watchmaking, the antenna being located in the space delimited by the housing, characterized in that the antenna is constituted by the combination of a coil comprising at least one turn (11), said coil being arranged and directed to capture the component H φ of the magnetic field H located tangentially to said cylinder, the axis of said coil being disposed parallel to the bottom (14) of said housing and first (20 ) and second (21) substantially planar electrodes placed parallel to each other and separated by a dielectric, said electrodes being arranged and directed to capture the component E r of the electric field E located radially to said cylinder, the planes of said electrodes being arranged parallel to the bottom (32) of said housing. 9. Pièce d'horlogerie selon la revendication 8, caractérisée par le fait que la bobine et les première et seconde électrodes sont connectées en parallèle.9. Timepiece according to claim 8, characterized in that the coil and the first and second electrodes are connected in parallel.
EP89107096A 1988-04-26 1989-04-20 Time-piece provided with an antenna Expired - Lifetime EP0339482B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8916177U DE8916177U1 (en) 1988-04-26 1989-04-20 Timepiece with antenna
AT89107096T ATE64792T1 (en) 1988-04-26 1989-04-20 ANTENNA CLOCK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1563/88A CH672870B5 (en) 1988-04-26 1988-04-26
CH1563/88 1988-04-26

Publications (3)

Publication Number Publication Date
EP0339482A1 true EP0339482A1 (en) 1989-11-02
EP0339482B1 EP0339482B1 (en) 1991-06-26
EP0339482B2 EP0339482B2 (en) 1998-11-11

Family

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EP89107096A Expired - Lifetime EP0339482B2 (en) 1988-04-26 1989-04-20 Time-piece provided with an antenna

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US (1) US4884252A (en)
EP (1) EP0339482B2 (en)
JP (1) JP2673577B2 (en)
KR (1) KR970003701B1 (en)
CN (1) CN1017563B (en)
AR (1) AR242860A1 (en)
AU (1) AU613851B2 (en)
BR (1) BR8901942A (en)
CA (1) CA1313707C (en)
CH (1) CH672870B5 (en)
DE (1) DE68900128D1 (en)
DK (1) DK173624B1 (en)
ES (1) ES2024701T5 (en)
FI (1) FI98664C (en)
GR (2) GR3002781T3 (en)
HK (1) HK74495A (en)
IE (1) IE63129B1 (en)
IL (1) IL90053A (en)
NO (1) NO174757C (en)
ZA (1) ZA892760B (en)

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EP0460526A1 (en) * 1990-06-07 1991-12-11 Eta SA Fabriques d'Ebauches Wrist-watch provided with means for receiving radio messages
US5135694A (en) * 1989-11-10 1992-08-04 Seiko Epson Corporation Electronic device wristband
EP0564236A2 (en) * 1992-03-31 1993-10-06 Citizen Watch Co., Ltd. Electronic watch equipped with receiving device
EP0569868A1 (en) * 1992-05-14 1993-11-18 Eta SA Fabriques d'Ebauches Control device for a timepiece suitable to receive radio messages
EP0603721A1 (en) * 1992-12-23 1994-06-29 Asulab S.A. Timepiece provided with an electromagnetic signal transmitting antenna
AT400997B (en) * 1990-11-19 1996-05-28 Cigarette Components Ltd FILTER WITH PARTICULATE ADDITIVE AND ITS USE
EP0741433A1 (en) * 1995-05-05 1996-11-06 Eta SA Fabriques d'Ebauches Antenna structure for use in a timepiece
EP0805507A1 (en) * 1996-05-03 1997-11-05 Eta SA Fabriques d'Ebauches Receive and/or transmit device for radio messages with an inductive and capacitive antenna
US5923265A (en) * 1995-12-29 1999-07-13 Eta Sa Fabriques D'ebauches Portable receiver comprising a manually actuable control device
WO2000038495A2 (en) * 2000-01-13 2000-07-06 Phonak Ag Hearing aid remote control and a hearing aid with a remote control of this type
EP1113346A1 (en) 1999-12-29 2001-07-04 Asulab S.A. Wrist-watch with an antenna
CN101938541A (en) * 2010-09-17 2011-01-05 鸿富锦精密工业（深圳）有限公司 Wrist-wearing electronic device with wireless communication function
EP2747198A1 (en) * 2012-12-21 2014-06-25 The Swatch Group Research and Development Ltd. Antenna assembly for a time-piece

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CH683484B5 (en) * 1992-08-03 1994-09-30 Ebauchesfabrik Eta Ag Timepiece capable of receiving radio messages provided with a ball controller.
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EP0616384B1 (en) * 1993-03-17 2000-05-31 Seiko Epson Corporation Antenna device and apparatus including such an antenna device
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WO1996004620A1 (en) * 1994-08-03 1996-02-15 Microbell Technologies, Inc. Multi-function portable communication device
JP3417083B2 (en) * 1994-10-04 2003-06-16 セイコーエプソン株式会社 Portable radio
EP0741434B1 (en) * 1995-05-05 2001-03-14 Eta SA Fabriques d'Ebauches Antenna structure for use in a timepiece
FR2739200B1 (en) * 1995-09-26 1997-10-31 Asulab Sa WATCHMAKING PIECE WITH AN ANTENNA
FR2743230B1 (en) * 1995-12-28 1998-02-06 Asulab Sa DATA TRANSMISSION SYSTEM INCLUDING A DATA TRANSMITTER AND A PORTABLE INFORMATION DETECTION DEVICE FOR RECEIVING SUCH DATA
US5926144A (en) * 1998-03-23 1999-07-20 Motorola, Inc. Wearable electronic device and antenna therefor
GB9917678D0 (en) * 1999-07-29 1999-09-29 Koninkl Philips Electronics Nv Body-worn personal communications apparatus
EP1291964B1 (en) * 2000-03-29 2005-06-01 Seiko Epson Corporation Antenna for high-frequency radio, high-frequency radio device and high-frequency radio device of watch type
JP3800941B2 (en) * 2000-09-26 2006-07-26 カシオ計算機株式会社 Electronic watch
US10488174B2 (en) 2018-03-06 2019-11-26 General Electric Company Systems and methods for wearable voltage detection devices
US7170462B2 (en) * 2002-09-11 2007-01-30 Citizen Watch Co., Ltd. Antenna structure and radio controlled timepiece
US20040080320A1 (en) * 2002-10-23 2004-04-29 Golub Joseph James Electric shock alert watch
EP1513220B1 (en) * 2003-09-03 2018-10-31 The Swatch Group Research and Development Ltd Patch antenna integrated in a wrist-watch
US7038634B2 (en) * 2004-07-02 2006-05-02 Eta Sa Manufacture Horlogère Suisse Optimization of a loop antenna geometry embedded in a wristband portion of a watch
US7162217B2 (en) * 2004-07-02 2007-01-09 Eta Sa Manufacture Horlogère Suisse Interconnection circuit between two loop antennas embedded in a wristband of a wrist-carried wireless instrument
US8073548B2 (en) * 2004-08-24 2011-12-06 Sensors For Medicine And Science, Inc. Wristband or other type of band having an adjustable antenna for use with a sensor reader
US20070076528A1 (en) * 2005-10-03 2007-04-05 Kirby Richard A Improved Wireless Timing System
US20080024265A1 (en) * 2006-07-11 2008-01-31 Jones Richard K Wrist-wearable electrical detection device
US9203489B2 (en) 2010-05-05 2015-12-01 Google Technology Holdings LLC Method and precoder information feedback in multi-antenna wireless communication systems
US8350695B2 (en) 2010-06-24 2013-01-08 Lojack Operating Company, Lp Body coupled antenna system and personal locator unit utilizing same
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
TW201304272A (en) * 2011-07-15 2013-01-16 Wistron Neweb Corp Antenna structure for wearable electronic device and wearable wireless electronic device
CN102402183B (en) * 2011-11-25 2013-06-12 成都天奥电子股份有限公司 Wrist watch with watchband conformal to antenna
US9813262B2 (en) 2012-12-03 2017-11-07 Google Technology Holdings LLC Method and apparatus for selectively transmitting data using spatial diversity
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US10229697B2 (en) 2013-03-12 2019-03-12 Google Technology Holdings LLC Apparatus and method for beamforming to obtain voice and noise signals
JP5907479B2 (en) * 2013-03-22 2016-04-26 カシオ計算機株式会社 ANTENNA DEVICE AND ELECTRONIC DEVICE
CH708234B1 (en) * 2013-06-27 2015-05-15 Soprod Sa Portable multifunction device controlled by external information.
US9549290B2 (en) 2013-12-19 2017-01-17 Google Technology Holdings LLC Method and apparatus for determining direction information for a wireless device
US9491007B2 (en) 2014-04-28 2016-11-08 Google Technology Holdings LLC Apparatus and method for antenna matching
US9478847B2 (en) * 2014-06-02 2016-10-25 Google Technology Holdings LLC Antenna system and method of assembly for a wearable electronic device
JP6668627B2 (en) * 2015-07-16 2020-03-18 カシオ計算機株式会社 Antenna and clock
CN105182731B (en) * 2015-09-29 2017-09-29 青岛歌尔声学科技有限公司 The method of intelligent watch and raising intelligent watch antenna efficiency with metal watchband
TWI595704B (en) * 2015-10-23 2017-08-11 正崴精密工業股份有限公司 Antenna assembly
CN106154823A (en) * 2016-08-15 2016-11-23 昆山联滔电子有限公司 Intelligent watch
JP2019158445A (en) * 2018-03-09 2019-09-19 セイコーエプソン株式会社 Electronic apparatus
JP7022013B2 (en) * 2018-06-18 2022-02-17 シチズン時計株式会社 Electronic clock

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US3631500A (en) * 1969-03-18 1971-12-28 Univ Hokkaido Energy density antenna apparatus for mobile radio receiver
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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5135694A (en) * 1989-11-10 1992-08-04 Seiko Epson Corporation Electronic device wristband
EP0460526A1 (en) * 1990-06-07 1991-12-11 Eta SA Fabriques d'Ebauches Wrist-watch provided with means for receiving radio messages
AT400997B (en) * 1990-11-19 1996-05-28 Cigarette Components Ltd FILTER WITH PARTICULATE ADDITIVE AND ITS USE
EP0564236A2 (en) * 1992-03-31 1993-10-06 Citizen Watch Co., Ltd. Electronic watch equipped with receiving device
EP0569868A1 (en) * 1992-05-14 1993-11-18 Eta SA Fabriques d'Ebauches Control device for a timepiece suitable to receive radio messages
US5268880A (en) * 1992-05-14 1993-12-07 Eta Sa Fabriques D'ebauches Control arrangement for a timepiece adapted to receive radio broadcast messages
CH682969GA3 (en) * 1992-05-14 1993-12-31 Ebauchesfabrik Eta Ag Timepiece capable of receiving broadcast messages.
EP0603721A1 (en) * 1992-12-23 1994-06-29 Asulab S.A. Timepiece provided with an electromagnetic signal transmitting antenna
US5367502A (en) * 1992-12-23 1994-11-22 Asulab S.A. Timepiece including a broadcasting antenna for an electromagnetic signal
CH686107GA3 (en) * 1992-12-23 1996-01-15 Asulab Sa Timepiece with an antenna for transmitting an electromagnetic signal.
EP0741433A1 (en) * 1995-05-05 1996-11-06 Eta SA Fabriques d'Ebauches Antenna structure for use in a timepiece
US5923265A (en) * 1995-12-29 1999-07-13 Eta Sa Fabriques D'ebauches Portable receiver comprising a manually actuable control device
FR2748360A1 (en) * 1996-05-03 1997-11-07 Ebauchesfabrik Eta Ag DEVICE FOR RECEIVING AND / OR TRANSMITTING PORTABLE RADIO-DIFFUSED MESSAGES COMPRISING AN INDUCTIVE AND CAPACITIVE ANTENNA
EP0805507A1 (en) * 1996-05-03 1997-11-05 Eta SA Fabriques d'Ebauches Receive and/or transmit device for radio messages with an inductive and capacitive antenna
EP1113346A1 (en) 1999-12-29 2001-07-04 Asulab S.A. Wrist-watch with an antenna
WO2000038495A2 (en) * 2000-01-13 2000-07-06 Phonak Ag Hearing aid remote control and a hearing aid with a remote control of this type
WO2000038495A3 (en) * 2000-01-13 2001-04-12 Phonak Ag Hearing aid remote control and a hearing aid with a remote control of this type
AU775802B2 (en) * 2000-01-13 2004-08-19 Phonak Ag Hearing aid remote control and a hearing aid with a remote control of this type
US6816600B1 (en) 2000-01-13 2004-11-09 Phonak Ag Remote control for a hearing aid, and applicable hearing aid
CN101938541A (en) * 2010-09-17 2011-01-05 鸿富锦精密工业（深圳）有限公司 Wrist-wearing electronic device with wireless communication function
EP2747198A1 (en) * 2012-12-21 2014-06-25 The Swatch Group Research and Development Ltd. Antenna assembly for a time-piece
WO2014095298A1 (en) * 2012-12-21 2014-06-26 The Swatch Group Research And Development Ltd Antenna assembly for a time-piece
US9705184B2 (en) 2012-12-21 2017-07-11 The Swatch Group Research And Development Ltd. Antenna assembly for a time-piece
TWI631765B (en) * 2012-12-21 2018-08-01 史華曲集團研發有限公司 Anienna assembly for a mobile device

Also Published As

Publication number Publication date
FI891983A0 (en) 1989-04-26
IE63129B1 (en) 1995-03-22
GR3029372T3 (en) 1999-05-28
NO174757C (en) 1994-06-29
KR970003701B1 (en) 1997-03-21
AU613851B2 (en) 1991-08-08
DK176289D0 (en) 1989-04-12
IL90053A (en) 1992-08-18
KR900016831A (en) 1990-11-14
CN1037407A (en) 1989-11-22
ES2024701B3 (en) 1992-03-01
DK176289A (en) 1989-10-27
IL90053A0 (en) 1989-12-15
GR3002781T3 (en) 1993-01-25
IE891111L (en) 1989-10-26
CN1017563B (en) 1992-07-22
NO891664L (en) 1989-10-27
NO891664D0 (en) 1989-04-21
CH672870B5 (en) 1990-07-13
DE68900128D1 (en) 1991-08-01
EP0339482B1 (en) 1991-06-26
EP0339482B2 (en) 1998-11-11
FI98664C (en) 1997-07-25
AU3331589A (en) 1989-11-02
JP2673577B2 (en) 1997-11-05
HK74495A (en) 1995-05-19
NO174757B (en) 1994-03-21
AR242860A1 (en) 1993-05-31
JPH0222593A (en) 1990-01-25
ZA892760B (en) 1989-12-27
FI98664B (en) 1997-04-15
ES2024701T5 (en) 1999-04-01
BR8901942A (en) 1989-11-28
US4884252A (en) 1989-11-28
DK173624B1 (en) 2001-05-07
CH672870GA3 (en) 1990-01-15
CA1313707C (en) 1993-02-16
FI891983A (en) 1989-10-27

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