EP0228635B2 - Montre électronique - Google Patents

Montre électronique Download PDF

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Publication number
EP0228635B2
EP0228635B2 EP86117343A EP86117343A EP0228635B2 EP 0228635 B2 EP0228635 B2 EP 0228635B2 EP 86117343 A EP86117343 A EP 86117343A EP 86117343 A EP86117343 A EP 86117343A EP 0228635 B2 EP0228635 B2 EP 0228635B2
Authority
EP
European Patent Office
Prior art keywords
solar cell
cell arrangement
electronic timepiece
storage means
display
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
EP86117343A
Other languages
German (de)
English (en)
Other versions
EP0228635A3 (en
EP0228635A2 (fr
EP0228635B1 (fr
Inventor
Adolf Dr. Prof. Goetzberger
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
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Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to AT86117343T priority Critical patent/ATE65334T1/de
Publication of EP0228635A2 publication Critical patent/EP0228635A2/fr
Publication of EP0228635A3 publication Critical patent/EP0228635A3/de
Application granted granted Critical
Publication of EP0228635B1 publication Critical patent/EP0228635B1/fr
Publication of EP0228635B2 publication Critical patent/EP0228635B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time-pieces
    • G04C10/02—Arrangements of electric power supplies in time-pieces the power supply being a radioactive or photovoltaic source

Definitions

  • the invention relates to an electronic watch with a solar cell arrangement and a memory for the electrical energy supplied by the solar cell arrangement, the solar cell arrangement being connected to the memory via a device which prevents a backflow of current from the memory, and with a clock circuit connected to the memory and one of This driven display device and it further relates to an electronic watch with a clock circuit connected to a non-rechargeable battery and with a display device.
  • Electronic clocks with a quartz oscillator belong to the prior art and are known, for example, from DE 21 46 776 C2.
  • the power requirements of the electronic circuit and the displays have been continuously reduced in recent years.
  • Such clocks are usually supplied with energy with the aid of primary batteries.
  • Wristwatches that include a rechargeable battery and solar cells for charging are also known.
  • Electronic watches with low-voltage capacitors with high capacitance have also recently come onto the market. The capacitors of such watches are charged with solar cells in the dial and guarantee a power reserve of 50 hours. However, this turns out to be too little for the winter season in the Federal Republic of Germany and in geographically similar countries.
  • a watch is known from DE 33 37 407 A1, the display device of which is at least partially switched off by a photoresistor when the ambient brightness is insufficient, so that the overall power reserve of the watch is increased.
  • the invention has for its object to provide an electronic watch of the type mentioned, which is characterized by a very high power reserve.
  • the fact that the power supply is separated from the watch electronics and the display results in substantial energy savings and thus a higher power reserve.
  • the display device which has the greatest energy requirement, in particular in the case of larger clocks, is operated directly via the solar cells of the solar cell arrangement without intermediate storage. This ensures that the display device is only in operation when the lighting is also sufficient for reading it.
  • the clock circuit is operated with an energy store, either a battery or a capacitor, which ensures that the time function is retained.
  • a mechanical pointer mechanism can also be used.
  • a stepper motor is provided which is controlled in such a way that, after it has come to a standstill overnight, it brings the pointers of the pointer mechanism into the correct position when illuminated.
  • the watch can also be equipped with an electronic calendar.
  • the solar cell arrangement is used exclusively for feeding the display device and not for recharging the battery.
  • the electronic watch shown in FIG. 1 has a quartz oscillator 1, which serves as a frequency reference for a watch circuit 2, by means of which the time keeping function of the electronic watch is ensured.
  • the clock circuit 2 are assigned actuation switches, not shown in the drawing, which allow the clock circuit 2 to be set to a specific time, a specific date, a specific day of the week, a wake-up time or the like.
  • actuation switches not shown in the drawing, which allow the clock circuit 2 to be set to a specific time, a specific date, a specific day of the week, a wake-up time or the like.
  • components for stopwatch functions that may be present and acoustic displays for a time and / or alarm times are also not shown. It is self-evident to the person skilled in the art that the clock circuit 2 can be equipped with such additional circuits or functions.
  • the clock circuit 2 is connected via a line 3 to a display device, which in the embodiment shown in FIG. 1 is a liquid crystal display 4 and in the embodiment of the invention shown in FIG. 2 is a mechanical pointer mechanism 5 with hands 10 and 11.
  • a stepping motor with control electronics is assigned to the mechanical pointer mechanism 5 shown schematically in FIG. 2.
  • the quartz oscillator 1 and the clock circuit 2 are supplied with electrical energy via an electrical memory 6.
  • the electrical storage 6 is preferably a rechargeable battery or a low-voltage capacitor with a high capacity.
  • a solar cell arrangement 7 shown in FIGS. 1 and 2 is connected via lines 8 and 9 to the liquid crystal display 4 or the mechanical pointer mechanism 5 in order to supply the liquid crystal display 4 or the pointer mechanism 5 with electrical energy.
  • the liquid crystal display 4 or the pointer mechanism 5 is operated directly via the solar cell arrangement 7 without interposing the electrical memory 6. Since the display device has a greater energy requirement, in particular in the case of larger clocks, the power supply for the clock electronics and the display achieve substantial energy savings because the display in the form of the liquid crystal display 4 or the mechanical pointer mechanism 5 is only in operation when the lighting is also sufficient for reading.
  • the clock circuit 2 is operated with the aid of the electrical memory 6, which can either be a battery or a capacitor, ensuring that the time function of the clock circuit 2 is retained.
  • a diode 12 is provided in the exemplary embodiments shown in FIGS. 1 and 2.
  • the diode 12 is connected with its anode to the line 8 and with its cathode to the positive pole of the electrical store 6, in particular an accumulator. This polarity ensures that for charging the memory 6 electrons from the negative pole 13 of the solar cell arrangement 7 can reach the negative pole of the electrical memory 6 and from the positive pole of the electrical memory 6 via the diode 12 to the positive pole 14 of the solar cell 7.
  • the electrical store 6 is charged or recharged.
  • the store 6 is discharged via the diode 12
  • the diode 12 thus has the effect that the electrical memory 6 charged by the solar cell arrangement 7 supplies only the electronics, that is to say in particular the quartz oscillator 1 and the clock circuit 2, and that the display device, in particular the liquid crystal display 4 or the mechanical pointer mechanism 5 with a stepping motor, without Memory is fed directly from the solar cell arrangement 7.
  • a non-rechargeable battery is used as the energy source instead of an electrical store 6, for example in the form of a rechargeable battery.
  • the solar cell arrangement 7 is used in such an electronic watch exclusively for feeding the display device, in particular the liquid crystal display 4 or the mechanical pointer mechanism 5 and not for loading the memory 6. Therefore, in the last-mentioned exemplary embodiment there is no connection between the line 8 and the non-rechargeable battery is provided so that the diode 12 is omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (9)

  1. Montre électronique, avec un dispositif à piles solaires, (7) et un accumulateur (6) pour l'énergie électrique fournie par le dispositif à piles solaires (7), le dispositif à piles solaires (7) étant relié à l'accumulateur (6) par l'intermédiaire d'un dispositif (12) empêchant tout retour de courant électrique depuis l'accumulateur (6), et avec un circuit de commande, raccordé à l'accumulateur (6), ainsi qu'un dispositif d'affichage (4, 5) commandé par celui-ci, caractérisée en ce que le dispositif d'affichage (4, 5) est directement raccordé au dispositif à piles solaires (7) pour assurer une alimentation électrique directe.
  2. Montre électronique selon la revendication 1, caractérisée en ce que le dispositif est une diode polarisée (12), passante dans le sens du courant de charge.
  3. Montre électronique selon la revendication 1 ou la revendication 2, caractérisée en ce que l'accumulateur (6) est une batterie rechargeable.
  4. Montre électronique selon la revendication 1 ou la revendication 2, caractérisée en ce que l'accumulateur (6) est un condensateur.
  5. Montre électronique selon l'une des revendications 1 à 4, caractérisée en ce que le dispositif d'affichage est un affichage à cristaux liquides (4).
  6. Montre électronique selon l'une des revendications 1 à 5, caractérisée en ce que le dispositif d'affichage est un mécanisme à aiguilles mécanique (5) qui est susceptible d'être mis en mouvement en cas de mise en oeuvre d'un éclairement orienté dans la position correcte, associée à l'heure de la montre.
  7. Montre électronique selon la revendication 6, caractérisée en ce que le mécanisme à aiguilles (10, 11) est entraîné par un moteur pas-à-pas.
  8. Montre électronique selon l'une des revendications précédentes, caractérisée en ce que d'autres indications, telles que la date, l'année et d'autres informations calendaires sont susceptibles d'être affichées, en plus de l'heure.
  9. Montre électronique avec un circuit de commande, raccordé à une batterie non-rechargeable, ainsi qu'avec un dispositif indicateur, caractérisée en ce que le dispositif indicateur (4, 5) est raccordé à un dispositif à piles solaires (7).
EP86117343A 1986-01-10 1986-12-12 Montre électronique Expired - Lifetime EP0228635B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86117343T ATE65334T1 (de) 1986-01-10 1986-12-12 Elektronische uhr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3600515A DE3600515C1 (de) 1986-01-10 1986-01-10 Elektronische Uhr
DE3600515 1986-01-10

Publications (4)

Publication Number Publication Date
EP0228635A2 EP0228635A2 (fr) 1987-07-15
EP0228635A3 EP0228635A3 (en) 1989-10-25
EP0228635B1 EP0228635B1 (fr) 1991-07-17
EP0228635B2 true EP0228635B2 (fr) 1995-10-18

Family

ID=6291622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117343A Expired - Lifetime EP0228635B2 (fr) 1986-01-10 1986-12-12 Montre électronique

Country Status (5)

Country Link
US (1) US4763310A (fr)
EP (1) EP0228635B2 (fr)
JP (1) JPS62203085A (fr)
AT (1) ATE65334T1 (fr)
DE (2) DE3600515C1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707728A1 (de) * 1987-03-11 1988-09-22 Junghans Uhren Gmbh Autonome funkuhr
KR910008218B1 (ko) * 1989-11-30 1991-10-12 삼성전자 주식회사 비디오 프린터의 칼라 기록장치
DE4314003A1 (de) * 1993-04-26 1994-10-27 Schwerdtle & Schantz Gmbh Zeitkontrollvorrichtung
GB2343540A (en) * 1998-11-06 2000-05-10 Tacktick Ltd Solar powered display
US6288979B1 (en) * 2000-04-06 2001-09-11 Moneray International Ltd. Solar-driven eternity clock
TWI224722B (en) * 2000-05-19 2004-12-01 Asulab Sa Electronic device for generating and displaying an item of information
US6838994B2 (en) * 2001-10-26 2005-01-04 Koninklijke Philips Electronics N.V. Adaptive alarm system
US7615962B1 (en) * 2005-03-04 2009-11-10 World Factory, Inc. Solar-powered thermometer and clock
JP2013152140A (ja) * 2012-01-25 2013-08-08 Seiko Instruments Inc 電子時計
JP2013156159A (ja) * 2012-01-30 2013-08-15 Seiko Instruments Inc 電子時計
US20140159637A1 (en) * 2012-08-19 2014-06-12 EnergyBionics, LLC Portable energy harvesting, storing, and charging device
US9501040B2 (en) * 2014-10-01 2016-11-22 William J. McNulty, Jr. Appliance or light timer including rechargeable back-up battery and external charger

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH373701A (de) * 1961-02-06 1964-01-15 Heno Watch S A Lichtelektrisch betriebene Uhr
DE1782185A1 (de) * 1968-07-29 1971-07-29 Kemper Kate Vorrichtung zum Wirken von Teigstuecken
JPS569674B1 (fr) * 1970-09-18 1981-03-03
US3928960A (en) * 1973-02-06 1975-12-30 Time Computer Combination wristwatch and calculator
GB1481024A (en) * 1974-07-15 1977-07-27 Suisse Horlogerie Battery powered electronic timepiece with voltage regulation
CH1181974A4 (fr) * 1974-08-30 1977-06-15
JPS51121365A (en) * 1975-04-17 1976-10-23 Seiko Epson Corp Electric clock
US4015420A (en) * 1976-05-03 1977-04-05 Hughes Aircraft Company Battery select circuitry and level translator for a digital watch
JPS5428176A (en) * 1977-08-04 1979-03-02 Seiko Instr & Electronics Ltd Electronic watch
US4234947A (en) * 1977-12-20 1980-11-18 Citizen Watch Co., Ltd. Solar battery powered timepiece
DE2918064A1 (de) * 1978-05-08 1979-11-22 Ebauches Sa Vorrichtung zum laden eines akkumulators durch eine quelle elektrischer energie, insbesondere fuer eine elektronische uhr
DE3115682A1 (de) * 1981-04-18 1982-11-04 Varta Batterie Ag, 3000 Hannover Batteriebetriebenes elektronisches geraet mit sicherung der spannungsversorgung fuer teilfunktionen
DE3337407A1 (de) * 1983-10-14 1985-04-25 Diehl GmbH & Co, 8500 Nürnberg Messeinrichtung mit einer passiven anzeigevorrichtung
JPH0792506B2 (ja) * 1984-11-21 1995-10-09 セイコーエプソン株式会社 電子時計
CH665081GA3 (fr) * 1985-10-11 1988-04-29

Also Published As

Publication number Publication date
DE3600515C1 (de) 1993-05-13
EP0228635A3 (en) 1989-10-25
ATE65334T1 (de) 1991-08-15
EP0228635A2 (fr) 1987-07-15
US4763310A (en) 1988-08-09
JPS62203085A (ja) 1987-09-07
EP0228635B1 (fr) 1991-07-17
DE3680310D1 (de) 1991-08-22

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