EP0766152B1 - Uhr mit einer Antenne - Google Patents

Uhr mit einer Antenne Download PDF

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Publication number
EP0766152B1
EP0766152B1 EP96114676A EP96114676A EP0766152B1 EP 0766152 B1 EP0766152 B1 EP 0766152B1 EP 96114676 A EP96114676 A EP 96114676A EP 96114676 A EP96114676 A EP 96114676A EP 0766152 B1 EP0766152 B1 EP 0766152B1
Authority
EP
European Patent Office
Prior art keywords
antenna
casing
horlogical
timepiece
receiver
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
EP96114676A
Other languages
English (en)
French (fr)
Other versions
EP0766152A1 (de
Inventor
Anja Skrivervik
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.)
Asulab AG
Original Assignee
Asulab AG
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
Application filed by Asulab AG filed Critical Asulab AG
Publication of EP0766152A1 publication Critical patent/EP0766152A1/de
Application granted granted Critical
Publication of EP0766152B1 publication Critical patent/EP0766152B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R60/00—Constructional details
    • G04R60/06—Antennas attached to or integrated in clock or watch bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals

Definitions

  • the present invention relates to a timepiece intended to be worn on the arm or wrist, said part comprising either a dipole antenna or an antenna with radiant slit capable of picking up and / or emitting a field electromagnetic carrying radio messages, a case comprising members for displaying the time and a micro transceiver that receives or transmits messages using the antenna.
  • the object of the present invention is to provide a timepiece of the type defined above which overcomes the disadvantages of the prior art.
  • the object of the invention is also to provide a such a timepiece including the antenna as such as well as its electrical dimensions are optimized.
  • the object of the invention is to provide a such a timepiece in which the construction of the antenna and its mounting in the housing are simple. This construction is also compact.
  • the invention relates to a part timepiece intended to be worn on the wrist, the piece comprising either a dipole antenna or a radiant slot capable of picking up and / or emitting a field electromagnetic carrying radio messages, a first housing comprising members for displaying the time and a micro transceiver that receives or transmits messages using the antenna.
  • the timepiece is characterized in that it further comprises a second box intended to receive the first box of so that the outer surface of the first housing and the inner surface of the second housing define a mounting groove, in that the antenna includes a dielectric substrate and at least one conductive element in printed circuit attached to the substrate and which defines a radiating element of said antenna and in that the antenna is located in the mounting groove so that it either wrapped around the first box.
  • the antenna can be manufactured independently other elements of the timepiece. Else apart, the antenna can be easily housed in this timepiece when assembled so as to take advantage of the inherent dimensions of the room to optimize the electrical dimensions of the antenna.
  • the part also includes a ground plane located in the mounting groove, between the antenna and the surface outside of the first case so that it surrounds this housing.
  • the antenna can be electrically isolated from disruptive elements that is found inside the timepiece.
  • Figure 1 schematically shows a forearm carrying a wristwatch 1 comprising a case 2 and a bracelet 3.
  • the box 2 contains an antenna 4.
  • Figure 2 is a plan view of the wristwatch 1 comprising the case 2, the bracelet 3 and the antenna 4.
  • the wristwatch 1 further includes a case additional 5, which is arranged in the housing 2.
  • a micro transceiver 6 is disposed in the housing 5 in addition to the time display units including in particular a movement 7, a dial 8, hands 9 and a battery 10.
  • the micro transceiver 6 is connected to antenna 4 so that it receives or transmits messages using the latter and transforms then these messages in data perceptible by the wearer of wristwatch 1, for example, by transmitting sound signals.
  • antenna 4 includes circuit conductive elements prints 11 and 12 fixed on a dielectric substrate 13.
  • the substrate 13 is flexible preference. For example, it has been determined that commercially available Kapton® and Espanex® materials are suitable in this regard.
  • the conductive element 11 defines a dipole. Of preferably, this dipole has a length of about ⁇ / 2, where ⁇ is the wavelength of the electromagnetic signal that the antenna is intended to receive or transmit.
  • the element conductor 12 forms a compensation arm which is added to this dipole. The arm length is adjusted from so that the antenna impedance is adapted to a line of transmission which connects the antenna 1 to the micro transceiver 6 arranged in the room housing of the invention.
  • connection between antenna 4 and this line of transmission is assigned to two excitation points 14 and 15, respectively at mid-length of the conductive element 11 and on the conductive element 12.
  • the elements conductors 11 and 12 preferably consist of metallic deposits, for example, of copper, on the dielectric substrate 13.
  • FIG 4 shows a variant of the antenna of the Figure 3.
  • the antenna 16 includes conductive elements in printed circuit 17.1 and 17.2 fixed on a dielectric substrate 18.
  • the conductive element 17.1 forms a dipole. Of preferably, this dipole has a length of approximately ⁇ / 2.
  • the conductive element 17.2 forms a compensation arm which is added to this dipole.
  • a frame of a capacitor 19 is connected with the end of the element conductor 17.2 so as to form with the latter a gamma matching connection between dipole 17.1 and the transmission line connecting antenna 1 to microreceptor 6.
  • the connection between the antenna 16 and the transmission line is assigned to two points excitation, respectively at mid-length of the element conductor 17.1 and the other armature of the capacitor 19.
  • FIG. 5 is a sectional view of the wristwatch 1.
  • Timepiece 1 includes the antenna dipole 4 of Figure 3 and the two boxes 2 and 5, the clockwork movement 7, the microreceptor 6 and the power stack 10 of Figure 2.
  • the part 1 also includes a circuit board printed 20 mounted in the housing 5, a mirror 21, a bottom 22 and a transmission line 23.
  • the micro transceiver 6 is mounted on the printed circuit board 20. The micro transceiver 6 and the movement 7 are powered by portable power source 10.
  • the case 2 is intended to receive the case 5 of so that the outer surface of the housing 5 and the inner surface of the housing 2 define a groove of mounting 25.
  • the antenna 4 is located in the mounting groove 25 so that it wraps around the housing 5.
  • the arrangement which has just been described makes it possible to manufacture the antenna independently of the other elements of the timepiece. This facilitates non-manufacturing only from the antenna but also from the room of watchmaking as such.
  • this arrangement facilitates the housing of the antenna when assembled in the room of watchmaking so as to take advantage of the dimensions inherent in the latter and to be able to optimize the electrical dimensions of the antenna.
  • the surface of the conductive elements 11 and 12 extend in the depth direction of the wristwatch 1, namely in the direction between its glass and its background.
  • the optimization of the antenna 4 is linked to this area.
  • the depth of a wristwatch is a dimension which can be relatively easily changed without significantly affecting its visual appearance nor the ease of use. So the layout of the antenna this way helps facilitate optimization of the antenna in a wristwatch.
  • the antenna 4 is energized using the line of transmission 23 which connects the antenna 4 to the microreceptor 6.
  • the transmission line 23 is preferably made up of a microstrip track.
  • this line of transmission could also consist of a cable coaxial.
  • the transmission line 23 goes to through an opening 26 formed in the side wall of the case 5.
  • this arrangement makes it possible to minimize the length of the transmission line 23 and thus minimize losses due to it.
  • Wristwatch 1 could also include a ground plane 24.
  • the ground plane 24 is located in the mounting groove 25 between the antenna 4 and the surface exterior of the housing 5 so that it surrounds this latest.
  • the ground plane 24 has the advantage of isolating electrically the antenna 4 of the disturbing elements which are inside the wristwatch 1, for example, metallic masses such as movement 7, the microreceptor 6 and the supply battery 10.
  • the characteristics of the antenna 4 can be selected without considering disruptive effects from inside the wrist watch 1.
  • One of the advantages of such an arrangement is that it allows using the same antenna with different movements watchmakers.
  • FIG. 7 shows a third embodiment of the antenna of the timepiece of the invention.
  • This antenna 30 consists of a conductive element in printed circuit 31 fixed on a dielectric substrate 32.
  • the substrate 32 is, preferably made of a flexible material.
  • the element conductor 31 is preferably produced by a deposit metallic on the dielectric substrate 32.
  • a radiant slot 33 is formed in the element driver 31.
  • this antenna is the dual of a conventional dipole antenna, such as the dipole formed by the conductive element 11.
  • the radiating slot 33 forms the complement of a dipole.
  • the slot has a length of about ⁇ / 2, where ⁇ is the length wave of the electromagnetic signal that the antenna is intended to capture.
  • connection between the antenna 30 and the line of transmission 23 is assigned at two excitation points 34 and 35, mid-length and sides respectively opposite of the radiant slot 33. If necessary, the adaptation of the antenna 30 to the impedance of the line of transmission 23 can be done using a capacitor connected between one of the excitation points and one of transmission line conductors 23.
  • the antenna 30 is also located in the mounting groove 25 so that it is wrapped around the housing 5.
  • FIG 8 shows a fourth embodiment of the antenna of the timepiece of the invention.
  • the antenna 40 consists of an element conductor 41 fixed on a dielectric substrate 42. This the latter is preferably made of a material flexible.
  • the conductive element 41 is preferably produced by a metallic deposit on the substrate 32, and defined by, a radiant slot 43 is formed in the ground plane 41. While the slot 33 is rectilinear, the slot 43 of Figure 6 has the shape of a "V".
  • connection between the antenna 40 and the transmission line 23 is assigned at two excitation points 44 and 45 at opposite sides of the point of the "V" of the radiating slot 43.
  • the adaptation of the antenna 40 to the impedance of the transmission line 23 could also be done using a capacitor connected between one of the excitation points and a wire of the transmission line 23.
  • Such a form of slot makes it possible to position the excitation points 44 and 45 in the direction of the depth of the wristwatch 1 so that they are opposite the microreceptor 6. Thus, the length of the line of light can be minimized. transmission which connects the antenna 40 to the microreceptor 6.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Electromechanical Clocks (AREA)
  • Waveguide Aerials (AREA)

Claims (6)

  1. Uhr, die zum Tragen am Handgelenk geeignet ist und entweder eine Dipolantenne (4) oder eine zum Auffangen und/oder Ausstrahlen eines Funknachrichten tragenden elektromagnetischen Felds geeignete Schlitz-Antenne (30; 40) und ein erstes Gehäuse (5) umfaßt, das:
    Mittel (7, 8, 10) zur Anzeige der Uhrzeit, und
    einen Mikro-Sender-Empfänger (6) umfaßt, der von der Antenne (4; 30; 40) aufgefangene Nachrichten empfängt oder aussendet,
       dadurch gekennzeichnet, daß sie zudem ein zweites Gehäuse (2) umfaßt, das zur Aufnahme des ersten Gehäuses (5) bestimmt ist, so daß die Außenfläche des ersten Gehäuses und die Innenfläche des zweiten Gehäuses eine Fuge oder Montageregion (25) bilden, daß die Antenne (4; 30; 40) ein dielektrisches Substrat (13; 33; 43) und mindestens ein leitendes Element (11, 12; 31; 41) als gedruckte Schaltung umfaßt, welches auf dem Substrat (13; 33; 43) befestigt ist und ein Ausstrahlungselement der Antenne (4; 30; 40) bildet, und daß die Antenne (4; 30; 40) in der Fuge oder Montageregion (25) so angeordnet ist, daß sie um das erste Gehäuse (5) herum gewickelt oder angeordnet ist.
  2. Uhr nach Anspruch 1, dadurch gekennzeichnet, daß sie zudem eine in der Fuge oder Montageregion zwischen der Antenne und der Außenfläche des ersten Gehäuses befindliche, letztere umgebende Massefläche (24) umfaßt.
  3. Uhr nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das dielektrische Substrat (13; 33; 43) aus einem biegsamen Material gebildet ist.
  4. Uhr nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sich die Oberfläche der leitenden Elemente über die Tiefe der Uhr erstreckt.
  5. Uhr nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie zudem eine Übertragungsleitung (23), die die Antenne (4; 30; 40) mit dem Mikro-Sender-Empfänger (6) verbindet, umfaßt, und daß das erste Gehäuse (5) eine Öffnung in seiner Seitenwand aufweist, wobei die Übertragungsleitung (23) sich durch die Öffnung (26) hindurch erstreckt, um das Heranbringen der Antenne (4; 30; 40) an den Mikro-Sender-Empfänger (6) zu ermöglichen.
  6. Uhr nach Anspruch 5, dadurch gekennzeichnet, daß die Antenne (16) von zwei leitenden Elementen (17.1, 17.2) und einem Kondensator (19) gebildet wird, der so mit einem ersten der leitenden Elemente verbunden ist, daß eine Gammaanpassungsverbindung zwischen dem zweiten der leitenden Elemente und der Übertragungsleitung (23) gebildet wird.
EP96114676A 1995-09-26 1996-09-13 Uhr mit einer Antenne Expired - Lifetime EP0766152B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9511270 1995-09-26
FR9511270A FR2739200B1 (fr) 1995-09-26 1995-09-26 Piece d'horlogerie comportant une antenne

Publications (2)

Publication Number Publication Date
EP0766152A1 EP0766152A1 (de) 1997-04-02
EP0766152B1 true EP0766152B1 (de) 1999-06-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114676A Expired - Lifetime EP0766152B1 (de) 1995-09-26 1996-09-13 Uhr mit einer Antenne

Country Status (6)

Country Link
US (1) US5699319A (de)
EP (1) EP0766152B1 (de)
JP (1) JPH09127267A (de)
CN (1) CN1091892C (de)
DE (1) DE69602999T2 (de)
FR (1) FR2739200B1 (de)

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Also Published As

Publication number Publication date
US5699319A (en) 1997-12-16
EP0766152A1 (de) 1997-04-02
FR2739200A1 (fr) 1997-03-28
DE69602999T2 (de) 2000-01-13
DE69602999D1 (de) 1999-07-29
JPH09127267A (ja) 1997-05-16
FR2739200B1 (fr) 1997-10-31
HK1012735A1 (en) 1999-08-06
CN1154499A (zh) 1997-07-16
CN1091892C (zh) 2002-10-02

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