EP0339482B2 - Pièce d'horlogerie comportant une antenne - Google Patents

Pièce d'horlogerie comportant une antenne Download PDF

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Publication number
EP0339482B2
EP0339482B2 EP89107096A EP89107096A EP0339482B2 EP 0339482 B2 EP0339482 B2 EP 0339482B2 EP 89107096 A EP89107096 A EP 89107096A EP 89107096 A EP89107096 A EP 89107096A EP 0339482 B2 EP0339482 B2 EP 0339482B2
Authority
EP
European Patent Office
Prior art keywords
antenna
wristwatch
case
coil
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.)
Expired - Lifetime
Application number
EP89107096A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0339482A1 (fr
EP0339482B1 (fr
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 SA Manufacture Horlogere Suisse
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Eta SA Fabriques dEbauches
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4213352&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0339482(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ebauchesfabrik ETA AG, Eta SA Fabriques dEbauches filed Critical Ebauchesfabrik ETA AG
Priority to DE8916177U priority Critical patent/DE8916177U1/de
Priority to AT89107096T priority patent/ATE64792T1/de
Publication of EP0339482A1 publication Critical patent/EP0339482A1/fr
Publication of EP0339482B1 publication Critical patent/EP0339482B1/fr
Application granted granted Critical
Publication of EP0339482B2 publication Critical patent/EP0339482B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 likely to be worn on a part of the body presenting 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 carrier of radio messages and a box composed at less glass and a bottom, said housing comprising, in addition to organs necessary for displaying the time, a micro-receiver receiving the messages received by the antenna to transform these messages in data perceivable by the wearer of the coin of watchmaking.
  • the conductors are mechanically stressed and may 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 besides which must be carried out especially since carries an antenna and therefore cannot be exchanged with a bracelet currently existing on the market.
  • the document FR-A-2 505 105 (US-A-4 419 770) describes a wrist AM radio receiver with a PLL synthesizer as local oscillator.
  • This receiver fitted with an electronic watch, is equipped with a rod-shaped antenna mounted in the housing of the watch, this case being rounded to match the curve of the wrist.
  • the figures accompanying the document clearly show that the bar is directed in the width direction of the bracelet, which makes the antenna sensitive to the component of the magnetic field located longitudinally to the cylinder formed by the wrist. Now this unfavorable situation, as will appear in the description of the invention which will follow.
  • This article highlights an important resonance between a incident electromagnetic field of 50 to 200 MHz and the human body taken as a whole with arms along of the trunk, which induces electromagnetic radiation secondary, close to this human body forming substantially a vertical cylinder, with a component predominantly radial electric and a component predominant magnetic tangential to said cylinder vertical.
  • Document JP-A-57-132 286 discloses a wristwatch provided in its housing with an antenna formed of a winding around a core. The orientation of the axis center of the coil, formed by the winding, is parallel to the three o'clock - nine o'clock axis of the watch. This coil is located in an extension of the housing (twelve o'clock side) and arranged next to the movement watchmaker and display means associated with this movement watchmaker.
  • the orientation of the antenna is unfavorable to a efficient reception and arrangement of this antenna next door of the watch movement and display means increases the size of the housing, the latter drawback being all the more critical as the cross section of the reel is great.
  • the purpose of the present invention is to overcome the aforementioned disadvantages in providing a wristwatch provided with an antenna having a very good reception without prejudice to the dimensions of the case and therefore the dimensions of the case of a wristwatch.
  • the present invention relates to a wristwatch as defined in claim 1, this wristwatch being characterized in that the axis of the antenna coil is oriented so that this coil can pick up the azimuthal magnetic component (H ⁇ ) of the electromagnetic field located tangentially to the wrist of a user and oriented perpendicular to the longitudinal direction of the forearm of this user, and in that said coil surrounds the clockwork movement, of the organs necessary for displaying of the hour and a micro-receiver associated with the antenna.
  • H ⁇ azimuthal magnetic component
  • 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 we mean here a medium insulator separating the two electrodes, this medium can also be air.
  • the polarization of the incident electric field is assumed 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 likely to be 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 direction of the electromagnetic field are strongly modified in the vicinity of the body, this being mainly due to the fact that the properties dielectric of the human body are very different from those of the air.
  • the study of the electromagnetic field in the vicinity has been undertaken 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 chloride sodium, so that the dielectric properties of this solution match 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.
  • Figure 2 shows a forearm carrying a wristwatch 4 comprising a case 2 and a bracelet 3.
  • E r radial electrical component
  • H ⁇ azimuthal or tangential magnetic component
  • the tangential magnetic field H ⁇ penetrates into the housing by the edge thereof and 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.
  • Figure 3 shows schematically how is this antenna arranged inductive in case 2 of the watch.
  • the antenna 7, does including here that 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 case, must be arranged parallel to the longitudinal direction of the bracelet 3.
  • Figure 6 is a plan view of a wristwatch comprising a case 2 and a bracelet 3 and Figure 7 is a section along the 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 by means of a flexible connector 13 which may consist of a connector "zebra" (registered trademark) 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 that link the sections together could be welds instead of the proposed connectors.
  • the metallized section 9 could also be on the ice or drowned in it.
  • the section 12 could be drowned only partially in the bottom 14 or even be disposed at the surface of this background.
  • Figure 2 also shows 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 to pick it up must consist of two substantially planar electrodes, separated by a dielectric and arranged parallel to the bottom of the housing.
  • FIG 4 shows schematically how is this antenna arranged capacitive 50 in the case 2 of the watch.
  • the antenna here has two electrodes 20 and 21 which are connected to a microreceptor 8.
  • the electrode 20 must be at a certain distance from the electrode 21 and present a certain surface by relative to this electrode 21.
  • the electrode 20 can have a surface substantially identical to the electrode 21 if it is located under the dial 18.
  • this electrode 20 could be the dial itself, surmounted by needles and possibly pierced with a window that would show, for example, the message to be transmitted (a telephone number to call back, a date of an appointment, etc.)
  • the electrode 20 is annular and could be split or shaped of serpentine.
  • FIG. 5 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 the capacitors C 1 and C 2 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.
  • the present invention is not limited to capturing one of these components to the exclusion of the other and that it is very well possible to capture the two components at the same time, one not going besides not without the other.
  • the timepiece can 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.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Electric Clocks (AREA)
  • Support Of Aerials (AREA)
  • Structure Of Receivers (AREA)
EP89107096A 1988-04-26 1989-04-20 Pièce d'horlogerie comportant une antenne Expired - Lifetime EP0339482B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8916177U DE8916177U1 (de) 1988-04-26 1989-04-20 Zeitmeßgerät mit Antenne
AT89107096T ATE64792T1 (de) 1988-04-26 1989-04-20 Mit einer antenne versehene uhr.

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=4213352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107096A Expired - Lifetime EP0339482B2 (fr) 1988-04-26 1989-04-20 Pièce d'horlogerie comportant une antenne

Country Status (20)

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

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JP3800941B2 (ja) * 2000-09-26 2006-07-26 カシオ計算機株式会社 電子腕時計
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JP5786555B2 (ja) * 2011-02-23 2015-09-30 セイコーエプソン株式会社 アンテナ装置、電子機器および電子時計
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CN102402183B (zh) * 2011-11-25 2013-06-12 成都天奥电子股份有限公司 一种表带与天线共形的手表
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US9979531B2 (en) 2013-01-03 2018-05-22 Google Technology Holdings LLC Method and apparatus for tuning a communication device for multi band operation
US10229697B2 (en) 2013-03-12 2019-03-12 Google Technology Holdings LLC Apparatus and method for beamforming to obtain voice and noise signals
JP5907479B2 (ja) * 2013-03-22 2016-04-26 カシオ計算機株式会社 アンテナ装置及び電子機器
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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 (ja) * 2015-07-16 2020-03-18 カシオ計算機株式会社 アンテナおよび時計
CN105182731B (zh) * 2015-09-29 2017-09-29 青岛歌尔声学科技有限公司 具有金属表带的智能手表及提高智能手表天线效率的方法
TWI595704B (zh) * 2015-10-23 2017-08-11 正崴精密工業股份有限公司 天線組合
CN106154823A (zh) * 2016-08-15 2016-11-23 昆山联滔电子有限公司 智能手表
JP2019158445A (ja) * 2018-03-09 2019-09-19 セイコーエプソン株式会社 電子機器
JP7022013B2 (ja) * 2018-06-18 2022-02-17 シチズン時計株式会社 電子時計

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Also Published As

Publication number Publication date
CN1017563B (zh) 1992-07-22
NO174757B (no) 1994-03-21
ES2024701T5 (es) 1999-04-01
JPH0222593A (ja) 1990-01-25
BR8901942A (pt) 1989-11-28
IE63129B1 (en) 1995-03-22
ZA892760B (en) 1989-12-27
CN1037407A (zh) 1989-11-22
US4884252A (en) 1989-11-28
DK173624B1 (da) 2001-05-07
FI891983A0 (fi) 1989-04-26
CA1313707C (en) 1993-02-16
NO891664D0 (no) 1989-04-21
AU613851B2 (en) 1991-08-08
EP0339482A1 (fr) 1989-11-02
CH672870B5 (es) 1990-07-13
GR3002781T3 (en) 1993-01-25
KR900016831A (ko) 1990-11-14
CH672870GA3 (es) 1990-01-15
EP0339482B1 (fr) 1991-06-26
HK74495A (en) 1995-05-19
IL90053A0 (en) 1989-12-15
NO174757C (no) 1994-06-29
ES2024701B3 (es) 1992-03-01
JP2673577B2 (ja) 1997-11-05
FI98664B (fi) 1997-04-15
IL90053A (en) 1992-08-18
DK176289D0 (da) 1989-04-12
IE891111L (en) 1989-10-26
GR3029372T3 (en) 1999-05-28
FI891983A (fi) 1989-10-27
KR970003701B1 (ko) 1997-03-21
DK176289A (da) 1989-10-27
NO891664L (no) 1989-10-27
AU3331589A (en) 1989-11-02
AR242860A1 (es) 1993-05-31
DE68900128D1 (de) 1991-08-01
FI98664C (fi) 1997-07-25

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