EP0059162A1 - Means for correcting the information displayed by an electronic clock - Google Patents

Means for correcting the information displayed by an electronic clock Download PDF

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Publication number
EP0059162A1
EP0059162A1 EP82810063A EP82810063A EP0059162A1 EP 0059162 A1 EP0059162 A1 EP 0059162A1 EP 82810063 A EP82810063 A EP 82810063A EP 82810063 A EP82810063 A EP 82810063A EP 0059162 A1 EP0059162 A1 EP 0059162A1
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EP
European Patent Office
Prior art keywords
correction
crown
rotation
hour
steps
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.)
Ceased
Application number
EP82810063A
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German (de)
French (fr)
Inventor
Aurèle Maire
Norbert Perucchi
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.)
Longines Watch Co Francillon Ltd
Original Assignee
Compagnie des Montres Longines Francillon SA
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Publication date
Application filed by Compagnie des Montres Longines Francillon SA filed Critical Compagnie des Montres Longines Francillon SA
Publication of EP0059162A1 publication Critical patent/EP0059162A1/en
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0076—Visual time or date indication means in which the time in another time-zone or in another city can be displayed at will
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/001—Electromechanical switches for setting or display
    • G04C3/007—Electromechanical contact-making and breaking devices acting as pulse generators for setting

Definitions

  • the present invention relates to devices for correcting the time information displayed by an electronic watch, and it relates more precisely to electronic watches in which the different operating and correction modes are called up by means of a crown capable of being manipulated by two-way rotation.
  • crown is spreading very widely at present, not only for aesthetic reasons, but especially with the aim of facilitating the access of the user of the watch to these different modes, by offering him manipulations similar to those known for conventional mechanical watches for example for setting the time, day or month.
  • one of the objects of the invention is to propose a correction device by which two different types of correction of the displayed information can be carried out in the same axial position of the crown, the direction of the corrections being determined by the direction of rotation of the crown.
  • one of the essential characteristics of the invention is to provide, in the correction device, means for detecting any reversal of the direction of rotation of the crown after the completion of a first type of correction, and for then order, in response to this detection, the stopping of this first type of correction and the implementation of a second type of correction.
  • the reference 60 shows the time base of an electronic watch, the pulses of which supply the circuit 61 for controlling the stepping motor 62 which causes an analog display, not shown.
  • Time zone corrections are made by means of a crown associated with a contact mechanism 1, 2 so that contact 1 is periodically closed when the crown is rotated clockwise, contact 2 being periodically closed when the crown is operated in the opposite direction.
  • a mechanism is known per se and described for example in French patent application No. 77 06198.
  • Each pulse corresponding to the closing of contact 1 is used, as will be seen below, to trigger either an advance circuit 41 in steps of 1 hour, or an advance circuit 51 in steps of only one hour.
  • These advance circuits 41 and 51, as well as the delay circuits 42 and 52 have been represented by separate blocks of the control circuit 61 of the motor 62, but it is clear that they can be an integral part of this circuit. Their function is to influence the control means of the motor 62 so as to cause the latter to carry out a determined number of steps ra pides, forward or backward, corresponding to a correction of 1 hour or 1 ⁇ 2 hour of the displayed time.
  • the closing pulses of contact 2 selectively trigger the delay circuits 42 or 52 depending on the type of correction desired.
  • a contact 3 or any other means is actuated when the correction means are put into action, for example when the rod is pulled to put it in an axial position reserved for time zone changes.
  • Such a circuit comprises for example a bistable rocker 11, respectively 12, capable of being brought into the high position by closing the contact 1, respectively 2.
  • the advance circuit 41 respectively delay 42, in steps of 1 hour, is controlled via an AND gate 21, respectively 22, with two inputs, one of which is connected directly to contact 1, respectively 2, and the other, via an inverter circuit at the output of the flip-flop 12, respectively 11. It follows that the advance or delay circuits 41 or 42 will not be controlled by their respective contact 1 or 2 only if the other contact has not yet been operated (no reversal of the direction of rotation).
  • the advance circuit 51 respectively delay 52, in steps of 1 ⁇ 2 hour, is controlled by an AND gate 31, respectively 32, with two inputs, one of which is connected directly to the contact l, respectively 2, and the other at the output of the flip-flop 12, respectively 11. It follows that the advance or delay circuits 51 or 52 can only be controlled by their respective contact 1 or 2 if the other con tact has already been operated (reversing the direction of rotation).
  • the time zone changes are obtained in the position pulled from the crown, but they could as well be carried out in the neutral position of this crown, after actuation of a second control member (push-button, key capacitive, file, etc.). It would then suffice to provide that the actuation of this second control member simultaneously causes the reset of the flip-flops.
  • a second control member push-button, key capacitive, file, etc.

Abstract

The correction device of the invention makes it possible to activate, in the same axial position of the crown, two different modes of correction of the data displayed by the watch, it being possible to make those corrections in both directions, depending on the direction of rotation of the crown. The second correction mode is activated only after a reversal of direction of the correction made according to the first mode. This device contains, notably, memory means 11, 12, associated with each direction of rotation of the crown, and selection means 21, 31, 22, 32, for choosing the mode and the direction of correction activated in accordance with the direction of rotation of the crown, on the one hand, and a possible reversal of that direction, on the other.

Description

La présente invention concerne les dispositifs de correction des informations horaires affichées par une montre électronique, et elle se rapporte plus précisément aux montres électroniques dans lesquelles les différents modes de fonctionnement et de correction sont appelés au moyen d'une couronne susceptible d'être manipulée en rotation dans les deux sens.The present invention relates to devices for correcting the time information displayed by an electronic watch, and it relates more precisely to electronic watches in which the different operating and correction modes are called up by means of a crown capable of being manipulated by two-way rotation.

L'utilisation d'une couronne se répand très largement à l'heure actuelle, non seulement pour des raisons esthétiques, mais surtout dans le but de faciliter l'accès de l'utilisateur de la montre à ces différents modes, en lui proposant des manipulations analogues à celles que l'on connaît pour les montres mécaniques classiques par exemple pour la mise à l'heure, au jour ou au mois.The use of a crown is spreading very widely at present, not only for aesthetic reasons, but especially with the aim of facilitating the access of the user of the watch to these different modes, by offering him manipulations similar to those known for conventional mechanical watches for example for setting the time, day or month.

Toutefois, le nombre de degrés de liberté de la couronne étant réduit aux deux sens de rotation et à deux ou au maximum trois positions axiales de la tige, il est important d'optimiser les dispositifs de commande à couronne de manière qu'un nombre croissant de modes de fonctionnement et de correction puissent être atteints, si possible de façon simple, par la manipulation de la couronne. Ce nombre croissant de modes résulte lui-même de la complexité grandissante des circuits dont sont équipées aujourd'hui les montres électroniques.However, the number of degrees of freedom of the crown being reduced to the two directions of rotation and to two or at most three axial positions of the rod, it is important to optimize the crown control devices so that an increasing number operating and correction modes can be achieved, if possible in a simple manner, by the manipulation of the crown. This growing number of modes is itself the result of the increasing complexity of the circuits with which electronic watches are fitted today.

C'est pourquoi, l'un des objets de l'invention est de proposer un dispositif de correction grâce auquel on puisse effectuer dans la même position axiale de la couronne deux types différents de corrections des informations affichées, le sens des corrections étant déterminé par le sens de rotation de la couronne.This is why, one of the objects of the invention is to propose a correction device by which two different types of correction of the displayed information can be carried out in the same axial position of the crown, the direction of the corrections being determined by the direction of rotation of the crown.

Dans un mode de réalisation particulièrement avantageux de l'invention, ce dispositif peut être mis en oeuvre pour effectuer:

  • - soit le changement de fuseau horaire par pas de 1 heure en avant ou en arrière,
  • - soit le changement de fuseau horaire par pas de ½ heure en avant ou en arrière.
In a particularly advantageous embodiment of the invention, this device can be used to perform:
  • - either the time zone change in steps of 1 hour forward or backward,
  • - either the time zone change in steps of ½ hour forward or backward.

Il existe en effet des régions du monde ou le passage d'un fuseau horaire au fuseau voisin s'effectue par pas de heure. L'intérêt de prévoir une correction rapide de l'indication des heures non seulement par pas de 1 heure, mais également par pas de heure ne se justifie toutefois qu'à la condition que cette possibilité supplémentaire ne s'accompagne pas d'une complication trop grande des mécanismes de commande nécessaires, ou de la manipulation de ces mécanismes. L'invention permet justement d'effectuer ces deux types de corrections en utilisant les mêmes manipulations de la couronne, à laquelle est affectée une seule position axiale correspondant au changement du fuseau horaire.There are indeed regions of the world where the passage from a time zone to the neighboring zone is carried out in steps of time. The advantage of providing for a rapid correction of the indication of the hours not only in steps of 1 hour, but also in steps of the hour is only justified, however, on the condition that this additional possibility is not accompanied by a complication. too much control mechanisms required, or manipulation of these mechanisms. The invention precisely allows these two types of corrections to be made using the same manipulations of the crown, to which a single axial position is assigned corresponding to the change in the time zone.

A cet effet, l'une des caractéristiques essentielles de l'invention est de prévoir, dans le dispositif de correction, des moyens pour détecter toute inversion du sens de rotation de la couronne après la réalisation d'un premier type de correction, et pour commander alors, en réponse à cette détection, l'arrêt de ce premier type de correction et la mise en oeuvre d'un deuxième type de correction.To this end, one of the essential characteristics of the invention is to provide, in the correction device, means for detecting any reversal of the direction of rotation of the crown after the completion of a first type of correction, and for then order, in response to this detection, the stopping of this first type of correction and the implementation of a second type of correction.

L'invention sera bien comprise à la lecture de la description suivante, de l'un de ses modes de réalisation particuliers, faite en liaison avec la figure jointe, qui représente schématiquement et par blocs le fonctionnement d'un dispositif de correction permettant le changement de fuseau horaire par pas de 1 heure ou de heure.The invention will be clearly understood on reading the following description of one of its particular embodiments, made in conjunction with the attached figure, which schematically and in blocks represents the operation of a correction device allowing the change time zone in 1 hour or hour steps.

Dans la figure, on a représenté par la référence 60 la base de temps d'une montre électronique, dont les impulsions alimentent le circuit 61 de commande du moteur pas à pas 62 qui entraîne un affichage analogique non représenté.In the figure, the reference 60 shows the time base of an electronic watch, the pulses of which supply the circuit 61 for controlling the stepping motor 62 which causes an analog display, not shown.

Les corrections de fuseaux horaires sont effectuées au moyen d'une couronne associée à un mécanisme de contacts 1, 2 de telle façon que le contact 1 soit périodiquement fermé lors de la rotation de la couronne dans le sens horaire, le contact 2 étant périodiquement fermé lorsque la couronne est manoeuvrée en sens inverse. Un tel mécanisme est connu en soi et décrit par exemple dans la demande de brevet français no 77 06198.Time zone corrections are made by means of a crown associated with a contact mechanism 1, 2 so that contact 1 is periodically closed when the crown is rotated clockwise, contact 2 being periodically closed when the crown is operated in the opposite direction. Such a mechanism is known per se and described for example in French patent application No. 77 06198.

Chaque impulsion correspondant à la fermeture du contact 1 est utilisée, comme on le verra plus loin, pour déclencher soit un circuit d'avance 41 par pas de 1 heure, soit un circuit d'avance 51 par pas de heure seulement. Ces circuits d'avance 41 et 51, de même d'ailleurs que les circuits de retard 42 et 52 ont été représentés par des blocs distincts du circuit de commande 61 du moteur 62, mais il est clair qu'ils pourront faire partie intégrante de ce circuit. Leur fonction est d'influencer les moyens de commande du moteur 62 de façon à faire effectuer à celui-ci un nombre déterminé de pas rapides, en avant ou en arrière, correspondant à une correction de 1 heure ou de ½ heure de l'heure affichée.Each pulse corresponding to the closing of contact 1 is used, as will be seen below, to trigger either an advance circuit 41 in steps of 1 hour, or an advance circuit 51 in steps of only one hour. These advance circuits 41 and 51, as well as the delay circuits 42 and 52 have been represented by separate blocks of the control circuit 61 of the motor 62, but it is clear that they can be an integral part of this circuit. Their function is to influence the control means of the motor 62 so as to cause the latter to carry out a determined number of steps ra pides, forward or backward, corresponding to a correction of 1 hour or ½ hour of the displayed time.

De la même façon que pour le contact 1, les impulsions de fermeture du contact 2 déclenchent sélectivement les circuits de retard 42 ou 52 selon le type de correction souhaité. Un contact 3 ou tout autre moyen est actionné lors de la mise en action des moyens de correction, par exemple lors d'une traction de la tige pour la mettre dans une position axiale réservée aux changements de fuseau horaire.In the same way as for contact 1, the closing pulses of contact 2 selectively trigger the delay circuits 42 or 52 depending on the type of correction desired. A contact 3 or any other means is actuated when the correction means are put into action, for example when the rod is pulled to put it in an axial position reserved for time zone changes.

Dans ce qui suit, on décrira un mode de réalisation particulier des moyens mis en oeuvre pour détecter tout changement de sens de rotation de la couronne lors d'une correction par pas de 1 heure et pour commander, en réponse à cette détection, la mise hors fonctionnement des circuits d'avance ou de retard 41 ou 42 et la mise en oeuvre des circuits d'avance ou de retard 51 ou 52, de manière à passer ainsi d'un premier mode de correction (changement de fuseau horaire par pas de 1 heure) à un deuxième (changement de fuseau horaire par pas de ½ heure).In what follows, a particular embodiment will be described of the means used to detect any change in the direction of rotation of the crown during a correction in steps of 1 hour and to control, in response to this detection, the setting except operation of the advance or delay circuits 41 or 42 and the implementation of the advance or delay circuits 51 or 52, so as to pass from a first correction mode (change of time zone by step of 1 hour) to a second (change time zone in steps of ½ hour).

Pour détecter si la fermeture de l'un des contacts se produit après une inversion du sens de rotation de la couronne, on vérifie si, au moment de cette fermeture, la couronne a déjà été manoeuvrée en sens contraire, c'est-à-dire si à ce moment l'autre contact a déjà été fermé au moins une fois. C'est pourquoi on associe à chaque contact un élément de mémoire agencé de façon à prendre un état caractéristique à la suite de la fermeture de ce contact.To detect whether the closing of one of the contacts occurs after a reversal of the direction of rotation of the crown, it is checked whether, at the time of this closure, the crown has already been operated in the opposite direction, that is to say say if at this time the other contact has already been closed at least once. This is why there is associated with each contact a memory element arranged so as to assume a characteristic state following the closure of this contact.

Il suffit alors de prévoir un circuit qui commande, lors d'une impulsion sur le contact 1, respectivement 2 :

  • - soit le circuit d'avance 41, respectivement de retard 42 (pas de 1 heure)
  • - soit le circuit d'avance 51, respectivement de retard 52 (pas de heure)

selon qu'au moment de l'impulsion sur ce contact, l'élément associé à l'autre contact ne se trouve pas ou qu'il se trouve dans l'état caractéristique d'une manipulation antérieure de la couronne dans l'autre sens.It then suffices to provide a circuit which controls, during a pulse on the contact 1, respectively 2:
  • - either the advance circuit 41, respectively delay circuit 42 (1 hour step)
  • - either the advance circuit 51, respectively the delay circuit 52 (no time)

according to that at the moment of the impulse on this contact, the element associated with the other contact is not found or that it is in the characteristic state of an anterior manipulation of the crown in the other direction .

Un tel circuit comprend par exemple une bascule bistable 11, respectivement 12, susceptible d'être amenée en position haute par la fermeture du contact 1, respectivement 2.Such a circuit comprises for example a bistable rocker 11, respectively 12, capable of being brought into the high position by closing the contact 1, respectively 2.

Le circuit d'avance 41, respectivement de retard 42, par pas de 1 heure,est commandé par l'intermédiaire d'une porte ET 21, respectivement 22, à deux entrées, dont l'une est reliée directement au contact 1, respectivement 2, et l'autre, par l'intermédiaire d'un circuit inverseur à la sortie de la bascule bistable 12, respectivement 11. Il en résulte que les circuits d'avance ou de retard 41 ou 42 ne seront commandés par leur contact respectif 1 ou 2 que si l'autre contact n'a pas encore été manoeuvré (pas d'inversion du sens de rotation).The advance circuit 41, respectively delay 42, in steps of 1 hour, is controlled via an AND gate 21, respectively 22, with two inputs, one of which is connected directly to contact 1, respectively 2, and the other, via an inverter circuit at the output of the flip-flop 12, respectively 11. It follows that the advance or delay circuits 41 or 42 will not be controlled by their respective contact 1 or 2 only if the other contact has not yet been operated (no reversal of the direction of rotation).

Le circuit d'avance 51, respectivement de retard 52, par pas de ½ heure,est commandé par une porte ET 31, respectivement 32,à deux entrées, dont l'une est reliée directement au contact l,respectivement 2, et l'autre à la sortie de la bascule bistable 12,respectivement 11. Il en résulte que les circuits d'avance ou de retard 51 ou 52 ne pourront être commandés par leur contact respectif 1 ou 2 que si l'autre contact a déjà été manoeuvré (inversion du sens de rotation).The advance circuit 51, respectively delay 52, in steps of ½ hour, is controlled by an AND gate 31, respectively 32, with two inputs, one of which is connected directly to the contact l, respectively 2, and the other at the output of the flip-flop 12, respectively 11. It follows that the advance or delay circuits 51 or 52 can only be controlled by their respective contact 1 or 2 if the other con tact has already been operated (reversing the direction of rotation).

Dans ce cas particulier, il est clair que l'on ne peut plus repasser du second mode de correction au premier, sauf en replaçant la couronne en position neutre, et en la tirant à nouveau de façon à actionner le contact 3 relié à l'entrée de remise à zéro des bascules 11 et 12. Cette disposition est plus simple pour l'utilisateur lorsqu'il s'agit de passer d'un mode de changement de fuseau horaire à un autre, car alors il peut effectivement choisir d'abord le sens de correction par pas de 1 heure, puis celui par pas de heure. Si une nouvelle inversion du sens de la correction par pas de heure entraînait le retour dans le mode de correction par pas de 1 heure, il ne serait jamais possible de corriger les fuseaux par pas de i heure dans un sens déterminé, si au départ on n'avait pas effectué une correction par pas de 1 heure en sens contraire.In this particular case, it is clear that it is no longer possible to return from the second correction mode to the first, except by replacing the crown in the neutral position, and pulling it again so as to actuate the contact 3 connected to the flip-flop 11 and 12 reset input. This is easier for the user to switch from one time zone change mode to another, because then he can actually choose first the direction of correction in 1 hour steps, then that in hour steps. If a new reversal of the direction of correction by time step resulted in the return to the correction mode by 1 hour step, it would never be possible to correct the time zones in steps of i hour in a determined direction, if at the beginning we had not made a correction in 1 hour steps in the opposite direction.

Bien qu'elle ait été décrite en liaison avec un mode de réalisation particulier, la présente invention est susceptible de nombreuses variantes et modifications qui apparaîtront à l'homme de l'art.Although it has been described in connection with a particular embodiment, the present invention is susceptible of numerous variants and modifications which will appear to those skilled in the art.

Par exemple, dans le dispositif décrit, les changements de fuseaux horaires sont obtenus en position tirée de la couronne, mais ils pourraient aussi bien être effectués dans la position neutre de cette couronne, après actionnement d'un deuxième organe de commande (poussoir, touche capacitive, lime, etc....). Il suffirait alors de prévoir que l'actionnement de ce deuxième organe de commande provoque simultanément la remise à zéro des bascules bistables.For example, in the device described, the time zone changes are obtained in the position pulled from the crown, but they could as well be carried out in the neutral position of this crown, after actuation of a second control member (push-button, key capacitive, file, etc.). It would then suffice to provide that the actuation of this second control member simultaneously causes the reset of the flip-flops.

Claims (5)

1. Dispositif de correction des informations horaires affichées par une montre électronique au moyen d'une couronne susceptible d'être manipulée en rotation dans les deux sens, ce dispositif comportant notamment des premiers moyens de correction pour effectuer un premier type de corrections des informations affichées, le sens des corrections étant déterminé par le sens de rotation de la couronne, caractérisé en ce qu'il comporte en outre: - des deuxièmes moyens de correction pour effectuer, dans la même position de la couronne, un deuxième type de corrections des informations affichées; et - des moyens pour détecter toute inversion du sens de rotation de la couronne après une correction du premier type, et pour commander, en réponse à cette détection, la mise hors fonctionnement des premiers moyens de correction et la mise en action des deuxièmes. 1. Device for correcting the time information displayed by an electronic watch by means of a crown capable of being rotated in both directions, this device notably comprising first correction means for effecting a first type of correction of the information displayed , the direction of the corrections being determined by the direction of rotation of the crown, characterized in that it further comprises: - second correction means for effecting, in the same position of the crown, a second type of correction of the information displayed; and - Means for detecting any reversal of the direction of rotation of the crown after a correction of the first type, and for controlling, in response to this detection, the deactivation of the first correction means and the activation of the second. 2. Dispositif de correction selon la revendication 1, caractérisé en ce que le sens des corrections effectuées par les deuxièmes moyens de correction est également déterminé par le sens de rotation de la couronne.2. Correction device according to claim 1, characterized in that the direction of the corrections made by the second correction means is also determined by the direction of rotation of the crown. 3. Dispositif de correction selon la revendication 2, caractérisé en ce que les premiers moyens de correction permettent de corriger rapidement les informations horaires par pas de 1 heure, en avant ou en arrière, et en ce que les deuxièmes moyens de correction permettent de corriger rapidement les informations par pas de heure, en avant ou en arrière.3. Correction device according to claim 2, characterized in that the first correction means make it possible to quickly correct the time information in steps of 1 hour, forward or backward, and in that the second correction means per put to correct the information quickly in steps of hour, forward or backward. 4. Dispositif de correction selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte un moyen de mémoire associé à chaque sens de rotation de la couronne, le premier moyen de mémoire étant agencé de manière à prendre un état caractéristique lorsque la couronne est manipulée en rotation dans un premier sens, et le deuxième moyen de mémoire étant agencé de manière à prendre un état caractéristique lorsque la couronne est manipulée en rotation en sens inverse, et des moyens pour transmettre l'ordre correspondant à la rotation de la couronne dans un sens déterminé: - aux premier moyens de correction si, à cet instant, le moyen de mémoire associé au sens de rotation inverse ne se trouve pas dans ledit état caractéristique - aux deuxièmes moyens de correction si, à cet instant, le moyen de mémoire associé au sens de rotation inverse se trouve dans ledit état caractéristique. 4. Correction device according to any one of the preceding claims, characterized in that it comprises a memory means associated with each direction of rotation of the crown, the first memory means being arranged so as to assume a characteristic state when the crown is manipulated in rotation in a first direction, and the second memory means being arranged so as to assume a characteristic state when the crown is manipulated in rotation in the opposite direction, and means for transmitting the order corresponding to the rotation of the crown in a specific direction: - to the first correction means if, at this instant, the memory means associated with the reverse direction of rotation is not in said characteristic state - the second correction means if, at this instant, the memory means associated with the reverse direction of rotation is in said characteristic state. 5. Dispositif selon la revendication 4, caractérisé en ce que les moyens de mémoire sont remis à zéro lors de la mise en action des premiers moyens de correction.5. Device according to claim 4, characterized in that the memory means are reset to zero when the first correction means are put into action.
EP82810063A 1981-02-23 1982-02-12 Means for correcting the information displayed by an electronic clock Ceased EP0059162A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1173/81 1981-02-23
CH117381A CH643101B (en) 1981-02-23 1981-02-23 DEVICE FOR CORRECTING THE TIME INFORMATION DISPLAYED BY AN ELECTRONIC WATCH.

Publications (1)

Publication Number Publication Date
EP0059162A1 true EP0059162A1 (en) 1982-09-01

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Application Number Title Priority Date Filing Date
EP82810063A Ceased EP0059162A1 (en) 1981-02-23 1982-02-12 Means for correcting the information displayed by an electronic clock

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US (1) US4422776A (en)
EP (1) EP0059162A1 (en)
JP (1) JPS57153293A (en)
CH (1) CH643101B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111769768B (en) * 2020-05-29 2021-12-14 淮北微立淘科技有限公司 Watch stepping motor driving compensation method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094135A (en) * 1975-05-26 1978-06-13 Citizen Watch Company Limited Switch control unit for electronic timepiece
FR2413697A1 (en) * 1977-12-31 1979-07-27 Ebauchesfabrik Eta Ag QUARTZ WATCH AND MANUAL TIME CHANGE CONTROL ANALOG DISPLAY DEVICE
GB2024466A (en) * 1978-04-22 1980-01-09 Citizen Watch Co Ltd Electronic timepiece
FR2449917A1 (en) * 1979-02-26 1980-09-19 Suwa Seikosha Kk ELECTRONIC WATCH COMPRISING A DEVICE FOR COMPENSATING WRONG ENTRY SIGNALS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54135573A (en) * 1978-03-13 1979-10-20 Seiko Epson Corp Time correction system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4094135A (en) * 1975-05-26 1978-06-13 Citizen Watch Company Limited Switch control unit for electronic timepiece
FR2413697A1 (en) * 1977-12-31 1979-07-27 Ebauchesfabrik Eta Ag QUARTZ WATCH AND MANUAL TIME CHANGE CONTROL ANALOG DISPLAY DEVICE
GB2024466A (en) * 1978-04-22 1980-01-09 Citizen Watch Co Ltd Electronic timepiece
FR2449917A1 (en) * 1979-02-26 1980-09-19 Suwa Seikosha Kk ELECTRONIC WATCH COMPRISING A DEVICE FOR COMPENSATING WRONG ENTRY SIGNALS

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Publication number Publication date
JPS57153293A (en) 1982-09-21
CH643101GA3 (en) 1984-05-30
CH643101B (en)
US4422776A (en) 1983-12-27

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