EP3379347B1 - Method for adjusting the operation frequency of an electronic watch - Google Patents
Method for adjusting the operation frequency of an electronic watch Download PDFInfo
- Publication number
- EP3379347B1 EP3379347B1 EP17202602.3A EP17202602A EP3379347B1 EP 3379347 B1 EP3379347 B1 EP 3379347B1 EP 17202602 A EP17202602 A EP 17202602A EP 3379347 B1 EP3379347 B1 EP 3379347B1
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- European Patent Office
- Prior art keywords
- electronic device
- reference signal
- signal
- portable electronic
- electronic watch
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Classifications
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G5/00—Setting, i.e. correcting or changing, the time-indication
- G04G5/02—Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method
- G04G5/027—Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method by adding or suppressing individual pulses, e.g. for step-motor
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- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
- G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
Definitions
- the present invention relates to the field of electronic watches.
- the invention relates more particularly to a method for adjusting the running frequency or timing of an electronic watch, in particular an electronic watch equipped with a quartz oscillator.
- Electronic watch movements generally include a time base providing a time signal and a display module receiving this time signal, which is formed by timing pulses.
- the time base includes a clock circuit and a frequency divider circuit.
- the clock circuit is formed by a quartz oscillator which supplies a clock signal to the frequency divider circuit, this clock signal having a determined clock frequency.
- the frequency divider circuit is formed by a chain of dividers which outputs a time signal formed by timing pulses.
- the timing signal generally has a frequency of 1 Hz so that the seconds hand is actuated by a stepping motor at the rate of the seconds, i.e. - say in an arc of an angle of 6 ° every second.
- the present invention therefore aims to provide a method of adjusting the operating frequency of an electronic watch which has the advantage of eliminating specialized measurement and programming equipment and the implementation of which is greatly facilitated.
- the method makes it possible to correct the operating frequency of the electronic watch by inhibiting one or more pulses emitted by the frequency divider circuit as a function of the corrected inhibition value.
- the expression "correcting the inhibition value” means replacing the inhibition value in the memory of the frequency adjustment circuit with a new value, or correcting the inhibition value by the application of an offset.
- modulated optical signal means a sequence of light pulses the durations and spacings of which may vary as a function of the information coded by the signal.
- each light pulse can represent a bit of value "1” and each absence of light pulse a bit of value "0", so that the modulated optical signal can encode a digital value, for example 32-bit example, representative of a reference value used to replace or correct the inhibition value.
- the method may include the additional features set out in dependent claims 2-11.
- the electronic watch 10 is configured to communicate with a portable electronic device 12, for example a smartphone or tablet.
- the portable electronic device 12 is configured to transmit a modulated optical signal to the electronic watch 10 in order to allow adjustment of the running frequency of the watch.
- the electronic watch 10 comprises a dial 11 comprising an opening 15 or a part transparent to optical waves.
- An optical sensor 16, for example a photodiode or a phototransistor, is disposed in the opening or under the transparent part 15. According to a variant not shown, the optical sensor 16 can be integrated into the middle part 14 of the electronic watch 10, in particular if said middle part 14 is made of transparent plastic.
- the optical sensor 16 can be arranged bottom side of the watch case of the type with transparent case back so as to be visible for example through a sapphire crystal.
- the electronic watch 10 further comprises time display means 18 of the analog type, comprising hands driven by a stepping motor (not shown).
- the time display means can be of the digital type.
- the electronic watch is equipped with an electronic module 20 comprising a microcontroller 21, a supply unit 22, for example a battery or a battery, making it possible to supply the microcontroller 21, as well as a timing unit 24 of the operating frequency of the electronic watch.
- This timing unit 24 comprises an oscillator 26, for example a quartz oscillator, which supplies a clock signal S2 formed by pulses generated at a determined clock frequency, and a frequency divider circuit 28 arranged downstream of the oscillator 26 which receives at a first input the clock pulses of the clock signal S2 and which outputs a pulsed signal S1 at the operating frequency of the electronic watch.
- the electronic module 20 further comprises a communication unit 30 comprising in particular the optical sensor 16 connected to the microcontroller 21, as well as an adjustment circuit 32 of the operating frequency of the electronic watch.
- the adjustment circuit 32 includes a memory 33, for example of the RAM, EEPROM or Flash type, configured to store in an appropriate register an inhibition value.
- the adjustment circuit 32 supplies an inhibition signal S3 to a second input of the frequency divider circuit 28.
- the latter is connected to the adjustment circuit 24 in order to transmit to it a control signal S4, on the one hand, for synchronize the adjustment circuit 32 with the timing unit 24 of the operating frequency of the electronic watch and, on the other hand, for the management of the periodic sending of the inhibition signal.
- the adjustment circuit 32 acts preferentially at the input of the second stage of the frequency divider circuit 28, where the frequency of the signal is, for example, at a frequency close to 16 kHz for a 32 kHz quartz oscillator. For example, a programmed number of pulses from the second stage of the frequency divider circuit 28 is deleted every 60 seconds.
- the portable electronic device 12 in particular comprises a light source 35, for example one or more light-emitting diodes normally used as a flash for a camera.
- the electronic device 12 also includes a touch screen 36 and a microcontroller (not shown).
- the electronic device 12 also includes a computer application for adjusting the operating frequency of the electronic watch 10. This computer application can be downloaded from an IT service and is compatible in particular with the operating system IOS® and Android®.
- the microcontroller of the portable electronic device 12 executes a sequence of instructions in order to carry out the following steps: i) generate in the portable electronic device 12 a pulsed signal reference representative of a reference value; ii) converting the reference pulsed signal into a modulated optical signal; then iii) transmit the optical signal modulated by the light source 35 to the optical sensor 16 of the electronic watch 10, by placing the watch and the electronic device opposite and at a short distance from each other, see one against the other.
- the deviation of the operating frequency of the electronic watch (or operating error) relative to a reference clock has previously been determined by measurement equipment dedicated to this purpose, sold in particular by the company Witschi Electronic SA.
- This equipment is capable of estimating the deviation of the walking frequency (or walking error) during a determined period compared to to a reference clock.
- the running frequency could be determined for example by measuring the flanks between the first and third pulses of the stepping motor over a period of two seconds by an inductive sensor of the measuring equipment.
- the deviation of the operating frequency of the electronic watch could alternatively be determined directly by the user of the watch by periodically comparing the time displayed by the electronic watch with a reference clock. The adjustment of the operating frequency will however be less precise. From the estimated deviation, the previously mentioned inhibition value could be calculated and entered into memory 33.
- the screen 36 of the portable electronic device 12 has an interface configured to allow the entry of a numerical value when the computer application is operational.
- the digital value corresponds to a new value for deviation from the operating frequency, intended to replace or correct the inhibition value written in memory 33.
- This digital value can be expressed for example in a format corresponding to a number of seconds per year, per month or per day.
- the computer application is configured to control the light source 35 of the portable electronic device 12 in order to transmit to the electronic watch 10 a modulated optical signal representative of the digital value.
- This numerical value is a signed number in order to take into account a positive or negative deviation of the running frequency, that is to say if the time indicated by the electronic watch is early or late compared to a clock reference.
- the user / wearer of the electronic watch 10 configures it in an adjustment mode for example by actuating a push-button, by pivoting the bezel or the crown of the watch in order whether it is in a certain angular position, or by a single press or by a sequence of presses on the crown.
- the user / wearer of the watch positions the light source 35 of the portable electronic device 12 near the opening or the transparent part 15 arranged on the watch case 14 so that the optical sensor 16 can directly receive and receive the light signals emitted by the light source 35.
- the transmission of the modulated optical signal to the optical sensor 16 is then started by interacting with the interface of the portable electronic device 12, for example by pressing on a specific zone of the touch screen 36.
- the optical sensor 16 of the watch receives a sequence of light pulses.
- the microcontroller 21 analyzes whether the transmitted data is decipherable and then sends a signal to a light emitter 41 (an indicator light) making it possible to indicate to the user whether the entire modulated optical signal emitted by the light source 35 has been transmitted.
- the indicator may be a light emitting diode capable of diffusing a green color and a red color in order to indicate to the user / wearer of the watch whether the transmission has been carried out successfully (green indicator) or if an error has occurred. during transmission (red light).
- indicating a successful transmission or a transmission error can be implemented, for example by rotating one or more hands of the time display. according to a first and a second sequence according to the state of the transmission (successful transmission or error during the transmission) or by displaying an alphanumeric character or a symbol indicative of the state of the transmission by means of a LCD or OLED type display arranged for example on a part of the dial of the electronic watch.
- the microcontroller 21 of the watch is capable of reconstructing the digital value corresponding to the new deviation of the running frequency.
- the microcontroller 21 then goes determine an inhibition value as a function of the reconstituted digital value, then replace the initial inhibition value with this new inhibition value in the memory 33 of the adjustment circuit 32 of the operating frequency.
- the adjustment circuit 32 will then inhibit one or more pulses from the second stage of the frequency divider circuit 28 in order to correct the operating frequency so that it is as close as possible to that desired.
- the calculation for determining the inhibition value as a function of the deviation of the operating frequency (or operating error) desired can be carried out by the microcontroller of the portable electronic device 12, before sending of the light sequence.
- the microcontroller of the portable electronic device : i) generates a pulsed signal representative of the calculated inhibition value; ii) converts the pulsed signal into a corresponding optical pulse sequence, then iii) transmits the optical signal modulated by the light source to the optical sensor 16 of the electronic watch 10.
- the microcontroller 21 of the electronic watch 10 will then reconstitute the value inhibition then write this inhibition value in the appropriate register of the memory 33 of the adjustment circuit 32.
- optical sensor 16 is advantageously deactivated once the modulated optical signal has been successfully transmitted from the portable electronic device 12 to the electronic watch 10, preferably automatically after the expiration of a certain period of time. timeout to avoid unnecessary consumption of the power unit 22.
- the portable electronic device 12 includes a real-time clock 40 whose frequency has been previously synchronized with the frequency of a clock from an external propagating source. UTC coordinated universal time.
- the electronic watch 10 also includes a real time clock 40.
- the computer application is configured to generate in the portable electronic device 12 a pulsed reference signal representative of time. universal UTC.
- the microcontroller 21 of the electronic watch 10 is configured, according to this embodiment, to successively: i) reconstruct the digital value of the UTC time; b) comparing said digital value with a digital value of the real time clock 40 of the electronic watch 10; then c) correct the initial inhibition value stored in the memory 33 as a function of this comparison.
- the synchronization of the clock 40 of the portable electronic device 12 with the clock of the external source propagating the UTC time is for example carried out by means of an NTP network time protocol whose synchronization with the time Actual UTC is ensured with a typical uncertainty of a few milliseconds, or a few tens of milliseconds.
- the portable electronic device 12 further includes a satellite positioning system (GNSS) of the GPS or Galileo type. Synchronization of the real time clock 40 of the portable electronic device 12 with the frequency of the clock of the external source propagating the UTC time can then be carried out via GNSS.
- GNSS satellite positioning system
- the method consisting in comparing the UTC time with the real time clock 40 of the electronic watch 10 is independent of a setting of the time made by the user / wearer of the electronic watch.
- the real time clock 40 corresponds to the UTC time while the timing unit 24 is connected to the time display for example by driving the hands of an analog display by exciting the coils of the stepping motor -not with the signal S1 generated at the output of the frequency divider circuit 28.
- the electronic module 20 of the electronic watch 10 is configured to display and / or transmit to the portable electronic device 12 or to a remote server (not shown) a signal representative of a so-called differential digital value corresponding to the difference between the frequency of the real time clock of the electronic watch 10 before correction and the frequency of the clock of the external source.
- the computer application of the portable electronic device 12 is capable, when it is operational, of acquiring the differential value displayed and / or sent by the electronic watch 10 by means of a camera, a microphone or '' an optical sensor (not shown) fitted to the portable electronic device 12.
- the differential value is then stored in a memory of the portable electronic device 12 or in a memory of the server.
- a new differential value is sent and stored in the memory of the portable electronic device or of the server at each iteration of the method of adjusting the operating frequency according to the invention.
- the different differential values are then compared with each other. This comparison makes it possible to predict the frequency variation of the oscillator over time, for example by modeling according to a logarithmic function, in order to be able to determine a digital correction value which takes into account the frequency variations due to the aging of the oscillator during a subsequent correction of the operating frequency according to the method of the invention.
- the electronic module of the watch may include a thermal correction system 60 of the gait, making it possible to compensate for the influence of the temperature on the quartz oscillator.
- the memory 33 includes, in addition to the inhibition value, one or more thermal correction parameters. This or these parameters are used to calculate periodically, for example every four minutes, a value inhibition as a function of temperature, so as to adjust the operating frequency more finely. The method of adjusting the operating frequency can then make it possible to send, from the electronic device to the electronic watch, corrected thermal correction parameters, within the modulated optical signal. These corrected thermal correction parameters will then replace the old thermal correction parameters recorded in memory 33.
- the transmission of a modulated optical signal from the portable electronic device can be done not by one or more light-emitting diodes normally used as a flash but by a modulation of the light emitted by the screen of the device.
- portable electronics can be done not by one or more light-emitting diodes normally used as a flash but by a modulation of the light emitted by the screen of the device.
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Description
La présente invention concerne le domaine des montres électroniques. L'invention concerne plus particulièrement un procédé de réglage de la fréquence de marche ou de cadencement d'une montre électronique, en particulier une montre électronique équipée d'un oscillateur à quartz.The present invention relates to the field of electronic watches. The invention relates more particularly to a method for adjusting the running frequency or timing of an electronic watch, in particular an electronic watch equipped with a quartz oscillator.
Les mouvements horlogers électroniques comprennent en général une base de temps fournissant un signal temporel et un module d'affichage recevant ce signal temporel, lequel est formé d'impulsions de cadencement. La base de temps comprend un circuit d'horloge et un circuit diviseur de fréquence. Le circuit d'horloge est formé par un oscillateur à quartz qui fournit un signal d'horloge au circuit diviseur de fréquence, ce signal d'horloge ayant une fréquence d'horloge déterminée. Le circuit diviseur de fréquence est formé par une chaîne de diviseurs qui fournit en sortie un signal temporel formé d'impulsions de cadencement. Pour les montres électroniques notamment du type à affichage analogique, le signal de cadencement a en général une fréquence de 1 Hz afin que l'aiguille des secondes soit actionnée par un moteur pas-à-pas au rythme des secondes, c'est-à-dire selon un arc de cercle d'un angle de 6° toutes les secondes.Electronic watch movements generally include a time base providing a time signal and a display module receiving this time signal, which is formed by timing pulses. The time base includes a clock circuit and a frequency divider circuit. The clock circuit is formed by a quartz oscillator which supplies a clock signal to the frequency divider circuit, this clock signal having a determined clock frequency. The frequency divider circuit is formed by a chain of dividers which outputs a time signal formed by timing pulses. For electronic watches, in particular of the analog display type, the timing signal generally has a frequency of 1 Hz so that the seconds hand is actuated by a stepping motor at the rate of the seconds, i.e. - say in an arc of an angle of 6 ° every second.
En production industrielle, il est toutefois difficile de produire des oscillateurs pour montres électroniques ayant une fréquence de référence bien définie, afin d'obtenir, en sortie d'une série de diviseurs, des impulsions de cadencement à une fréquence unité de référence, telle qu'à 1 Hz. Il est principalement prévu de réaliser de tels oscillateurs au terme de la phase de production avec une fréquence de référence dans une bande de fréquences légèrement supérieure. Pour ajuster au mieux le signal temporel généré par la base de temps, il est connu d'associer à cette base de temps un circuit d'inhibition ou d'ajustement, lequel fournit en entrée du circuit diviseur de fréquence un signal d'inhibition qui agit de manière à supprimer un nombre d'impulsions d'horloge au cours de périodes d'inhibition, par exemple de durée de l'ordre d'une minute, pour corriger en moyenne la fréquence de référence. Un équipement de mesure et de programmation spécialisé permet de déterminer une déviation de la fréquence de marche par rapport à une horloge de référence et de programmer un nombre d'impulsions à supprimer pour que la fréquence de marche de la montre électronique se rapproche au plus près de la fréquence de l'horloge de référence.In industrial production, however, it is difficult to produce oscillators for electronic watches having a well-defined reference frequency, in order to obtain, at the output of a series of dividers, timing pulses at a reference unit frequency, such as 'at 1 Hz. It is mainly planned to produce such oscillators at the end of the production phase with a reference frequency in a slightly higher frequency band. To best adjust the time signal generated by the time base, it is known to associate with this time base an inhibition or adjustment circuit, which supplies at the input of the frequency divider circuit an inhibition signal which acts so as to suppress a number of clock pulses during muting periods, for example of the order of one minute, to correct the reference frequency on average. Specialized measurement and programming equipment makes it possible to determine a deviation of the operating frequency with respect to a reference clock and to program a number of pulses to be suppressed so that the operating frequency of the electronic watch comes as close as possible of the frequency of the reference clock.
L'utilisation d'un équipement de mesure et de programmation spécialisé est à ce jour indispensable pour permettre la calibration de la fréquence de marche de la montre électronique. Cet équipement a toutefois l'inconvénient d'être onéreux. La calibration de la fréquence de marche de la montre électronique ne peut donc se faire en principe uniquement lors d'un contrôle qualité de la montre avant commercialisation ou lors d'un service après-vente où la montre doit être renvoyée à l'usine ou à un service clientèle possédant un tel équipement. Les documents
La présente invention a par conséquent pour but de proposer une méthode de réglage de la fréquence de marche d'une montre électronique qui a l'avantage de s'affranchir d'équipement de mesure et de programmation spécialisé et dont la mise-en-oeuvre est grandement facilitée.The present invention therefore aims to provide a method of adjusting the operating frequency of an electronic watch which has the advantage of eliminating specialized measurement and programming equipment and the implementation of which is greatly facilitated.
A cet effet, il est proposé, selon la revendication 1, un procédé de réglage de la fréquence de marche d'une montre électronique par l'intermédiaire d'une application informatique installée sur un appareil électronique portable comportant notamment un microcontrôleur, une source lumineuse et un écran, la montre électronique comportant un module électronique comprenant :
- un oscillateur et un circuit diviseur de fréquence qui est agencé en aval de l'oscillateur et qui est configuré pour émettre un signal pulsé correspondant à la fréquence de marche
- un circuit d'ajustement de la fréquence de marche comportant une mémoire stockant une valeur d'inhibition, le circuit d'ajustement étant agencé pour inhiber une ou plusieurs impulsions émises par le circuit diviseur de fréquence en fonction de la valeur d'inhibition
- une unité de communication pour communiquer avec l'appareil électronique portable, l'unité de communication comportant un capteur optique agencé pour recevoir un signal sous la forme d'une séquence d'impulsions optiques, dite signal optique modulé
- un microcontrôleur agencé pour piloter le circuit d'ajustement de la fréquence de marche en fonction du signal optique modulé reçu par l'unité de communication,
- générer dans l'appareil électronique portable un signal pulsé de référence
- convertir le signal pulsé de référence en un signal optique modulé composé d'impulsions lumineuses
- transmettre au capteur optique de l'unité de communication de la montre électronique le signal optique modulé par la source lumineuse ou par une modulation de la lumière émise par l'écran de l'appareil électronique portable,
- reconstituer le signal pulsé de référence à partir du signal optique modulé reçu par le capteur optique
- an oscillator and a frequency divider circuit which is arranged downstream of the oscillator and which is configured to emit a pulsed signal corresponding to the operating frequency
- a circuit for adjusting the running frequency comprising a memory storing an inhibition value, the adjustment circuit being arranged to inhibit one or more pulses emitted by the frequency divider circuit as a function of the inhibition value
- a communication unit for communicating with the portable electronic device, the communication unit comprising an optical sensor arranged to receive a signal in the form of a sequence of optical pulses, called modulated optical signal
- a microcontroller arranged to control the circuit for adjusting the operating frequency as a function of the modulated optical signal received by the communication unit,
- generate a pulsed reference signal in the portable electronic device
- convert the reference pulsed signal into a modulated optical signal composed of light pulses
- transmit the optical signal modulated by the light source or by a modulation of the light emitted by the screen of the portable electronic device to the optical sensor of the communication unit of the electronic watch,
- reconstruct the reference pulsed signal from the modulated optical signal received by the optical sensor
Le procédé permet de corriger la fréquence de marche de la montre électronique par inhibition d'une ou plusieurs impulsions émises par le circuit diviseur de fréquence en fonction de la valeur d'inhibition corrigée.The method makes it possible to correct the operating frequency of the electronic watch by inhibiting one or more pulses emitted by the frequency divider circuit as a function of the corrected inhibition value.
Dans la présente demande, on entend par "valeur d'inhibition" :
- une valeur qui a été stockée dans la mémoire du circuit d'ajustement de la fréquence de marche lors d'une opération de calibrage de l'heure, par exemple avant la commercialisation de la montre, afin d'éviter une déviation de la fréquence de marche par rapport à une horloge de référence d'un équipement de mesure. L'équipement de mesure est par exemple du type commercialisé par la société Witschi Electronic SA, et calcule par ailleurs, en fonction de cette fréquence, la valeur d'inhibition correspondant à un nombre d'impulsions à supprimer dans le diviseur de fréquence afin que la fréquence de marche soit le plus proche possible de la fréquence de l'horloge de référence de l'équipement de mesure ; ou
- la valeur d'inhibition qui a été stockée dans la mémoire du circuit d'ajustement de la fréquence de marche au cours d'une correction ultérieure de la fréquence de marche selon le procédé de réglage divulgué dans la présente demande.
- a value which has been stored in the memory of the circuit for adjusting the running frequency during a time calibration operation, for example before the watch is marketed, in order to avoid a deviation in the frequency of runs against a reference clock of a measuring device. The measuring equipment is for example of the type marketed by the company Witschi Electronic SA, and also calculates, as a function of this frequency, the inhibition value corresponding to a number of pulses to be suppressed in the frequency divider so that the operating frequency is as close as possible to the frequency of the reference clock of the measuring equipment; or
- the inhibition value which has been stored in the memory of the operating frequency adjustment circuit during a subsequent correction of the operating frequency according to the adjustment method disclosed in the present application.
Par ailleurs, dans la présente demande on entend par "corriger de la valeur d'inhibition", remplacer la valeur d'inhibition dans la mémoire du circuit d'ajustement de la fréquence par une nouvelle valeur, ou corriger la valeur d'inhibition par l'application d'un offset.Furthermore, in the present application, the expression "correcting the inhibition value" means replacing the inhibition value in the memory of the frequency adjustment circuit with a new value, or correcting the inhibition value by the application of an offset.
En outre, dans la présente demande on entend par "signal optique modulé" une séquence d'impulsions lumineuses dont les durées et les espacements peuvent varier en fonction de l'information codée par le signal. Par exemple, chaque impulsion lumineuse peut représenter un bit de valeur "1" et chaque absence de d'impulsion lumineuse un bit de valeur "0", de sorte à ce que le signal optique modulé puisse coder une valeur numérique, par exemple sur 32 bits, représentative d'une valeur de référence utilisée pour remplacer ou corriger la valeur d'inhibition.Furthermore, in the present application, the term "modulated optical signal" means a sequence of light pulses the durations and spacings of which may vary as a function of the information coded by the signal. For example, each light pulse can represent a bit of value "1" and each absence of light pulse a bit of value "0", so that the modulated optical signal can encode a digital value, for example 32-bit example, representative of a reference value used to replace or correct the inhibition value.
En outre, le procédé peut comprendre les caractéristiques additionnelles présentées dans les revendications dépendantes 2-11.In addition, the method may include the additional features set out in dependent claims 2-11.
D'autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :
- la
figure 1 représente une vue en perspective d'une montre électronique et d'un appareil électronique portable, utilisés pour mettre en œuvre le procédé selon l'invention - la
figure 2 représente un schéma fonctionnel d'un module électronique de la montre de lafigure 1 .
- the
figure 1 shows a perspective view of an electronic watch and a portable electronic device, used to implement the method according to the invention - the
figure 2 represents a functional diagram of an electronic module of the watch of thefigure 1 .
En référence à la
Selon la
En référence à la
Dans une forme de réalisation, lorsque l'application informatique est lancée, le microcontrôleur de l'appareil électronique portable 12 exécute une séquence d'instructions afin d'effectuer les étapes suivantes : i) générer dans l'appareil électronique portable 12 un signal pulsé de référence représentatif d'une valeur de référence ; ii) convertir le signal pulsé de référence en un signal optique modulé ; puis iii) transmettre le signal optique modulé par la source lumineuse 35 au capteur optique 16 de la montre électronique 10, en plaçant la montre et l'appareil électronique en vis-à-vis et à faible distance l'un de l'autre, voir l'un contre l'autre.In one embodiment, when the computer application is launched, the microcontroller of the portable
Selon ce mode de réalisation, la déviation de la fréquence de marche de la montre électronique (ou erreur de marche) par rapport à une horloge de référence a préalablement été déterminée par un équipement de mesure dédié à cet effet, commercialisé notamment par la société Witschi Electronic SA. Cet équipement est capable d'estimer la déviation de la fréquence de marche (ou erreur de marche) au cours d'une période déterminée par rapport à une horloge de référence. La fréquence de marche a pu être déterminée par exemple en mesurant sur une période de deux secondes les flancs entre les premières et troisièmes impulsions du moteur pas-à-pas par un capteur inductif de l'équipement de mesure. La déviation de la fréquence de marche de la montre électronique a pu alternativement être déterminée directement par l'utilisateur de la montre en comparant périodiquement l'heure affichée par la montre électronique avec une horloge de référence. Le réglage de la fréquence de marche sera toutefois moins précis. A partir de la déviation estimée, la valeur d'inhibition préalablement évoquée a pu être calculée et entrée dans la mémoire 33.According to this embodiment, the deviation of the operating frequency of the electronic watch (or operating error) relative to a reference clock has previously been determined by measurement equipment dedicated to this purpose, sold in particular by the company Witschi Electronic SA. This equipment is capable of estimating the deviation of the walking frequency (or walking error) during a determined period compared to to a reference clock. The running frequency could be determined for example by measuring the flanks between the first and third pulses of the stepping motor over a period of two seconds by an inductive sensor of the measuring equipment. The deviation of the operating frequency of the electronic watch could alternatively be determined directly by the user of the watch by periodically comparing the time displayed by the electronic watch with a reference clock. The adjustment of the operating frequency will however be less precise. From the estimated deviation, the previously mentioned inhibition value could be calculated and entered into
L'écran 36 de l'appareil électronique portable 12 comporte une interface configurée pour permettre l'entrée d'une valeur numérique lorsque l'application informatique est opérationnelle. Dans un mode de réalisation, la valeur numérique correspond à une nouvelle valeur de déviation de la fréquence de marche, ayant vocation à remplacer ou de corriger la valeur d'inhibition inscrite dans la mémoire 33. Cette valeur numérique peut être exprimée par exemple dans un format correspondant à un nombre de secondes par année, par mois ou par jour. L'application informatique est configurée pour commander la source lumineuse 35 de l'appareil électronique portable 12 afin de transmettre à la montre électronique 10 un signal optique modulé représentatif de la valeur numérique. Cette valeur numérique est un nombre signé afin de prendre en compte une déviation positive ou négative de la fréquence de marche, c'est-à-dire si l'heure indiquée par la montre électronique est en avance ou en retard par rapport à une horloge de référence.The
Lors de l'opération de réglage de la fréquence de marche, l'utilisateur/porteur de la montre électronique 10 configure celle-ci dans un mode de réglage par exemple en actionnant un poussoir, en pivotant la lunette ou la couronne de la montre afin qu'elle se trouve dans une certaine position angulaire, ou encore par appui unique ou par une séquence d'appuis sur la couronne. L'utilisateur/porteur de la montre positionne ensuite la source lumineuse 35 de l'appareil électronique portable 12 à proximité de l'ouverture ou de la partie transparente 15 agencée sur le boitier de la montre 14 de sorte à ce que le capteur optique 16 puisse recevoir directement et capter les signaux lumineux émis par la source lumineuse 35. La transmission du signal optique modulé au capteur optique 16 est ensuite enclenchée en interagissant avec l'interface de l'appareil électronique portable 12, par exemple en appuyant sur une zone spécifique de l'écran tactile 36. Lors de la transmission du signal optique modulé, qui correspond à une période de l'ordre de quelques secondes, le capteur optique 16 de la montre reçoit une séquence de d'impulsions lumineuses. Dès que la transmission du signal optique modulé est terminée, le microcontrôleur 21 analyse si les données transmises sont déchiffrables puis envoie un signal à un émetteur lumineux 41 (un voyant) permettant d'indiquer à l'utilisateur si l'intégralité du signal optique modulé émis par la source lumineuse 35 a bien été transmis. Le voyant peut être une diode électroluminescente capable de diffuser une couleur verte et une couleur rouge afin d'indiquer à l'utilisateur/porteur de la montre si la transmission a été réalisée avec succès (voyant vert) ou si une erreur s'est produite lors de la transmission (voyant rouge). D'autres moyens pour indiquer une transmission réussie ou une erreur de transmission, c'est-à-dire l'état de la transmission, peuvent être implémentés, par exemple en faisant pivoter une ou plusieurs aiguilles de l'affichage de l'heure selon une première et une seconde séquence en fonction de l'état de la transmission (transmission réussie ou erreur au cours de la transmission) ou en affichant un caractère alphanumérique ou un symbole indicatif de l'état de la transmission par le biais d'un affichage du type LCD ou OLED agencé par exemple sur une partie du cadran de la montre électronique.During the operation of adjusting the operating frequency, the user / wearer of the
Par une opération de décodage, le microcontrôleur 21 de la montre est capable de reconstituer la valeur numérique correspondant à la nouvelle déviation de la fréquence de marche. Le microcontrôleur 21 va ensuite déterminer une valeur d'inhibition en fonction de la valeur numérique reconstituée, puis remplacer la valeur d'inhibition initiale par cette nouvelle valeur d'inhibition dans la mémoire 33 du circuit d'ajustement 32 de la fréquence de marche. Le circuit d'ajustement 32 va ensuite inhiber une ou plusieurs impulsions du deuxième étage du circuit diviseur de fréquence 28 afin de corriger la fréquence de marche pour que celle-ci soit la plus proche possible de celle voulue.By a decoding operation, the
Dans une variante d'exécution, le calcul pour déterminer la valeur d'inhibition en fonction de la déviation de la fréquence de marche (ou erreur de marche) voulue peut être réalisé par le microcontrôleur de l'appareil électronique portable 12, avant envoi de la séquence lumineuse. Selon cette variante, le microcontrôleur de l'appareil électronique portable : i) génère un signal pulsé représentatif de la valeur d'inhibition calculée ; ii) convertit le signal pulsé en une séquence d'impulsions optiques correspondante, puis iii) transmet le signal optique modulé par la source lumineuse au capteur optique 16 de la montre électronique 10. Le microcontrôleur 21 de la montre électronique 10 va ensuite reconstituer la valeur d'inhibition puis écrire cette valeur d'inhibition dans le registre appropriée de la mémoire 33 du circuit d'ajustement 32.In an alternative embodiment, the calculation for determining the inhibition value as a function of the deviation of the operating frequency (or operating error) desired can be carried out by the microcontroller of the portable
Il convient de noter que le capteur optique 16 est avantageusement désactivé une fois que le signal optique modulé a été transmis avec succès de l'appareil électronique portable 12 à la montre électronique 10, préférablement de manière automatique après l'expiration d'un certain délai d'attente (timeout) pour éviter une consommation inutile de l'unité d'alimentation 22.It should be noted that the
Dans une autre forme de réalisation, l'appareil électronique portable 12 comporte une horloge temps réel 40 dont la fréquence a été synchronisée au préalable à la fréquence d'une horloge d'une source externe propageant le temps universel coordonné UTC. La montre électronique 10 comporte également une horloge temps réel 40. A la différence de la forme de réalisation qui vient d'être décrite, l'application informatique est configurée pour générer dans l'appareil électronique portable 12 un signal pulsé de référence représentatif du temps universel UTC.In another embodiment, the portable
Le microcontrôleur 21 de la montre électronique 10 est configuré, selon cette forme de réalisation, pour successivement : i) reconstituer la valeur numérique du temps UTC ; b) comparer ladite valeur numérique avec une valeur numérique de l'horloge temps réel 40 de la montre électronique 10 ; puis c) corriger la valeur d'inhibition initiale stockée dans la mémoire 33 en fonction de cette comparaison.The
La synchronisation de l'horloge 40 de l'appareil électronique portable 12 avec l'horloge de la source externe propageant le temps UTC est par exemple réalisée par l'intermédiaire d'un protocole d'heure réseau NTP dont la synchronisation avec l'heure UTC réelle est assurée avec une incertitude typique de quelques millisecondes, ou quelque dizaines de millisecondes. Selon une variante, l'appareil électronique portable 12 comporte en outre un système de positionnement par satellites (GNSS) du type GPS ou Galileo. La synchronisation de l'horloge temps réel 40 de l'appareil électronique portable 12 avec la fréquence de l'horloge de la source externe propageant le temps UTC peut alors être réalisée par l'intermédiaire du GNSS.The synchronization of the
Il est à noter que le procédé consistant à comparer le temps UTC avec l'horloge temps réel 40 de la montre électronique 10 est indépendant d'un réglage de l'heure effectué par l'utilisateur/porteur de la montre électronique. L'horloge temps réel 40 correspond à l'heure UTC alors que l'unité de cadencement 24 est reliée à l'affichage de l'heure par exemple en entrainant les aiguilles d'un affichage analogique en excitant les bobines du moteur pas-à-pas avec le signal S1 généré à la sortie du circuit diviseur de fréquence 28.It should be noted that the method consisting in comparing the UTC time with the
Dans un mode de réalisation, le module électronique 20 de la montre électronique 10 est configuré pour afficher et/ou transmettre à l'appareil électronique portable 12 ou à un serveur distant (non-illustré) un signal représentatif d'une valeur numérique dite différentielle correspondant à la différence entre la fréquence de l'horloge temps réel de la montre électronique 10 avant correction et la fréquence de l'horloge de la source externe. L'application informatique de l'appareil électronique portable 12 est capable, lorsqu'elle est opérationnelle, d'acquérir la valeur différentielle affichée et/ou envoyée par la montre électronique 10 au moyen d'un appareil photo, d'un microphone ou d'un capteur optique (non-illustrés) équipant l'appareil électronique portable 12.In one embodiment, the
La valeur différentielle est ensuite stockée dans une mémoire de l'appareil électronique portable 12 ou dans une mémoire du serveur. Une nouvelle valeur différentielle est envoyée et stockée dans la mémoire de l'appareil électronique portable ou du serveur à chaque itération du procédé de réglage de la fréquence de marche selon l'invention. Les différentes valeurs différentielles sont ensuite comparées entre elles. Cette comparaison permet de prédire la variation de fréquence de l'oscillateur dans le temps, par exemple par une modélisation selon une fonction logarithmique, afin de pouvoir déterminer une valeur numérique de correction qui prend en compte les variations de fréquences dues au vieillissement de l'oscillateur lors d'une correction ultérieure de la fréquence de marche selon le procédé de l'invention.The differential value is then stored in a memory of the portable
Par ailleurs, le module électronique de la montre peut comporter un système de correction thermique 60 de la marche, permettant de compenser l'influence de la température sur l'oscillateur à quartz. Dans ce cas, la mémoire 33 comporte, en plus de la valeur d'inhibition, un ou plusieurs paramètres de correction thermique. Ce ou ces paramètres sont utilisés pour calculer périodiquement, par exemple toutes les quatre minutes, une valeur d'inhibition en fonction de la température, de sorte à régler la fréquence de marche plus finement. Le procédé de réglage de la fréquence de marche peut alors permettre d'envoyer, de l'appareil électronique à la montre électronique, des paramètres de correction thermique corrigés, au sein du signal optique modulé. Ces paramètres de correction thermique corrigés vont alors remplacer les anciens paramètres de correction thermique enregistrés dans la mémoire 33.Furthermore, the electronic module of the watch may include a
On comprendra que diverses modifications et/ou améliorations et/ou combinaisons évidentes pour l'homme du métier peuvent être apportées aux différents modes de réalisation de l'invention exposée ci-dessus sans sortir du cadre de l'invention définie par les revendications annexées. Par exemple, la transmission d'un signal optique modulé de l'appareil électronique portable peut se faire non pas par une ou plusieurs diodes électroluminescentes utilisées en temps normal comme flash mais par une modulation de la lumière émise par l'écran de l'appareil électronique portable.It will be understood that various modifications and / or improvements and / or combinations obvious to a person skilled in the art can be made to the various embodiments of the invention described above without departing from the scope of the invention defined by the appended claims. For example, the transmission of a modulated optical signal from the portable electronic device can be done not by one or more light-emitting diodes normally used as a flash but by a modulation of the light emitted by the screen of the device. portable electronics.
Claims (11)
- Method of adjusting the operating frequency of an electronic watch (10) by means of a computer application installed in a portable electronic device (12) including, in particular, a microcontroller, a light source (35) and a screen (36), wherein the electronic watch (10) comprises an electronic module (20) including:- an oscillator (26) and a frequency divider circuit (28) which is arranged downstream of the oscillator (26) and which is configured to transmit a pulsed signal corresponding to the operating frequency- an operating frequency adjustment circuit (32) including a memory (33) storing an inhibition value, the adjustment circuit being arranged to inhibit one or more pulses transmitted by the frequency divider circuit (28) as a function of the inhibition value- a communication unit (30) for communicating with the portable electronic device (12), the communication unit comprising an optical sensor (16) arranged to receive a signal in the form of a sequence of optical pulses, called a modulated optical signal- a microcontroller (21) arranged to control the operating frequency adjustment circuit (32) as a function of the modulated optical signal received by the communication unit,the adjustment method including the following steps, performed by the computer application:- generating a pulsed reference signal in the portable electronic device (12)- converting the pulsed reference signal into a modulated optical signal consisting of light pulses- transmitting to the optical sensor (16) of the communication unit (30) of the electronic watch (10) the modulated optical signal via the light source (35) or via a modulation of the light emitted by the screen (36) of the portable electronic device (12),and the following steps, performed by the microcontroller (21) of the electronic watch (10):- reconstituting the pulsed reference signal from the modulated optical signal received by the optical sensor (16)- correcting the inhibition value stored in the memory (33) of the adjustment circuit (32) as a function of the pulsed reference signal.
- Method according to claim 1, wherein the pulsed reference signal includes coding of a new inhibition value used to replace the inhibition value stored in the memory (33) during the correction step.
- Method according to claim 1, wherein the pulsed reference signal includes coding of an offset value used to increase or reduce the inhibition value stored in the memory (33) during the correction step.
- Method according to any of the preceding claims, wherein the screen (36) of the portable electronic device (12) includes an interface to enter a numerical value used to generate the pulsed reference signal.
- Method according to claim 1, wherein the electronic watch (10) includes a real-time clock (40) previously synchronized to Coordinated Universal Time UTC, the pulsed reference signal includes coding of the UTC time, the microcontroller (21) of the electronic watch (10) is configured to successively:- reconstitute the UTC time from the pulsed reference signal;- compare said reconstituted UTC time to the time given by the real-time clock (40) of the electronic watch (10);- correct the initial inhibition value stored in the memory (33) as a function of the result of this comparison.
- Method according to claim 5, wherein the UTC time used to generate the pulsed reference signal was obtained by the microcontroller (21) of the portable electronic device (12) by means of a network time protocol (NTP) via an external source clock.
- Method according to claim 5, wherein the portable electronic device (12) further includes a global satellite navigation system (GNSS) and wherein the UTC time used to generate the pulsed reference signal is obtained by the microcontroller (21) of the portable electronic device (10) by means of said system.
- Method according to claim 5, wherein the portable electronic device (12) is connectable to a mobile telephone network and the UTC time used to generate the pulsed reference signal is obtained via said network.
- Method according to any of claims 5 to 8, comprising the following step, performed by the microcontroller (21) of the electronic watch (10): transmitting to the portable electronic device (12) or to a remote server a signal representative of a differential numerical value corresponding to the difference between the frequency of the real-time clock (40) of the electronic watch (10) before and after correction.
- Method according to claim 9, wherein the step of transmitting the differential value is performed by optical transmission of a second modulated signal consisting of light pulses, said second signal being transmitted by a light transmitter (41) of the electronic watch to an optical sensor of the portable electronic device (12).
- Method according to any of the preceding claims, wherein the memory (33) of the electronic watch (10) stores at least one temperature correction parameter, the pulsed reference signal includes coding of at least one corrected temperature correction parameter, the method including the following step: correcting the temperature correction parameter stored in the memory (33) of the adjustment circuit (32) as a function of the pulsed reference signal.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US16/492,960 US11874633B2 (en) | 2017-03-20 | 2018-03-13 | Method for adjusting the operating frequency of an electronic watch |
JP2019571778A JP6858280B2 (en) | 2017-03-20 | 2018-03-13 | How to adjust the operating frequency of an electronic clock |
KR1020197027499A KR102277882B1 (en) | 2017-03-20 | 2018-03-13 | How to set the operating frequency of an electronic watch |
CN201880019442.7A CN110462528B (en) | 2017-03-20 | 2018-03-13 | Method for adjusting the operating frequency of an electronic watch |
PCT/EP2018/056302 WO2018172147A1 (en) | 2017-03-20 | 2018-03-13 | Method for setting the operating frequency of an electronic watch |
Applications Claiming Priority (2)
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EP17161866.3A EP3379346B1 (en) | 2017-03-20 | 2017-03-20 | Method for adjusting a quartz watch |
EP17167994.7A EP3396871A1 (en) | 2017-04-25 | 2017-04-25 | Method for transmitting data from an electronic apparatus to an electronic device |
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EP3379347B1 true EP3379347B1 (en) | 2020-01-01 |
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EP3379346B1 (en) * | 2017-03-20 | 2022-08-03 | ETA SA Manufacture Horlogère Suisse | Method for adjusting a quartz watch |
JP6798470B2 (en) * | 2017-11-08 | 2020-12-09 | カシオ計算機株式会社 | Electronic clocks, display control methods, and programs |
EP3779612A1 (en) * | 2019-08-16 | 2021-02-17 | The Swatch Group Research and Development Ltd | Method for broadcasting a message to the wearer of a watch |
EP3842876A1 (en) * | 2019-12-24 | 2021-06-30 | The Swatch Group Research and Development Ltd | Timepiece fitted with a mechanical movement and a device for correcting the time displayed |
EP3926418A1 (en) * | 2020-06-18 | 2021-12-22 | ETA SA Manufacture Horlogère Suisse | Automatic correction of time and/or date |
DE102021116557A1 (en) * | 2021-06-25 | 2022-12-29 | Realization Desal Ag | Clock |
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EP3379347A1 (en) | 2018-09-26 |
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