EP3379347A1 - Verfahren zur regulierung der gangfrequenz einer elektronischen uhr - Google Patents

Verfahren zur regulierung der gangfrequenz einer elektronischen uhr Download PDF

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Publication number
EP3379347A1
EP3379347A1 EP17202602.3A EP17202602A EP3379347A1 EP 3379347 A1 EP3379347 A1 EP 3379347A1 EP 17202602 A EP17202602 A EP 17202602A EP 3379347 A1 EP3379347 A1 EP 3379347A1
Authority
EP
European Patent Office
Prior art keywords
signal
electronic watch
portable electronic
pulsed
electronic device
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.)
Granted
Application number
EP17202602.3A
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English (en)
French (fr)
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EP3379347B1 (de
Inventor
François Klopfenstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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
Priority claimed from EP17161866.3A external-priority patent/EP3379346B1/de
Priority claimed from EP17167994.7A external-priority patent/EP3396871A1/de
Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to JP2019571778A priority Critical patent/JP6858280B2/ja
Priority to KR1020197027499A priority patent/KR102277882B1/ko
Priority to CN201880019442.7A priority patent/CN110462528B/zh
Priority to PCT/EP2018/056302 priority patent/WO2018172147A1/fr
Priority to US16/492,960 priority patent/US11874633B2/en
Publication of EP3379347A1 publication Critical patent/EP3379347A1/de
Publication of EP3379347B1 publication Critical patent/EP3379347B1/de
Application granted granted Critical
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Classifications

    • 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
    • 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 more particularly relates to a method for adjusting the operating frequency or timing of an electronic watch, in particular an electronic watch equipped with a quartz oscillator.
  • Electronic watch movements generally comprise a time base providing a time signal and a display module receiving this time signal, which is formed of timing pulses.
  • the time base includes a clock circuit and a frequency divider circuit.
  • the clock circuit is formed by a crystal oscillator which provides a clock signal to the frequency divider circuit, which clock signal has a determined clock frequency.
  • the frequency divider circuit is formed by a divider chain which outputs a time signal formed of timing pulses.
  • the timing signal generally has a frequency of 1 Hz so that the second hand is actuated by a stepper motor at the rate of seconds, that is to say say in an arc of an angle of 6 ° every second.
  • the use of specialized measuring and programming equipment is currently essential to allow the calibration of the running frequency of the electronic watch.
  • This equipment however has the disadvantage of being expensive.
  • the calibration of the running frequency of the electronic watch can therefore be done in principle only during a quality control of the watch before marketing or during an after-sales service where the watch must be returned to the factory or to a customer service with such equipment.
  • the object of the present invention is therefore to propose a method for adjusting the running frequency of an electronic watch which has the advantage of being free from measurement and specialized programming equipment and whose implementation is greatly facilitated.
  • the method makes it possible to correct the running 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 term "correcting the inhibition value” is used to replace the inhibition value in the memory of the frequency adjustment circuit by a new value, or to correct the inhibition value by the application of an offset.
  • modulated optical signal means a sequence of light pulses whose durations and spacings may vary according to 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 numerical value, by example on 32 bits, representative of a reference value used to replace or correct the inhibition value.
  • the method may comprise the additional features set forth in the dependent claims, taken alone or in any technically possible combination.
  • 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 to allow adjustment of the clock frequency of the watch.
  • the electronic watch 10 comprises a dial 11 comprising an opening 15 or a portion transparent to the optical waves.
  • An optical sensor 16, for example a photodiode or a phototransistor, is arranged in the opening or in the transparent part 15. According to a non-illustrated variant, 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 transparent box bottom so as to be visible for example through a sapphire crystal.
  • the electronic watch 10 further comprises analog time display means 18, comprising needles driven by a stepper motor (not shown).
  • the means for displaying the time can be of the digital type.
  • the electronic watch is equipped with an electronic module 20 comprising a microcontroller 21, a power supply unit 22, for example a battery or a battery, for powering the microcontroller 21, as well as a timing unit 24 of the frequency of operation of the electronic watch.
  • This timing unit 24 comprises an oscillator 26, for example a crystal oscillator, which provides a clock signal S2 formed of pulses generated at a determined clock frequency, and a frequency divider circuit 28 arranged downstream of the clock. oscillator 26 and which receives at a first input the clock pulses of the clock signal S2 and which outputs a pulsed signal S1 at the running frequency of the electronic watch.
  • the electronic module 20 further comprises a communication unit 30 including in particular the optical sensor 16 connected to the microcontroller 21, and an adjustment circuit 32 of the running frequency of the electronic watch.
  • the adjustment circuit 32 comprises a memory 33, for example of the RAM, EEPROM or Flash type, configured to store an inhibition value in a suitable register.
  • 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 synchronizing the adjustment circuit 32 with the timing unit 24 of the running frequency of the electronic watch and, secondly, for managing the periodic sending of the inhibition signal.
  • the adjustment circuit 32 is preferably 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 crystal oscillator.
  • a programmed number of pulses of the second stage of the frequency divider circuit 28 is for example removed every 60 seconds.
  • the portable electronic device 12 comprises in particular a light source 35, for example one or more light-emitting diodes normally used as a flash for a camera.
  • the electronic apparatus 12 further comprises a touch screen 36 and a microcontroller (not shown).
  • the electronic device 12 also includes a computer application for adjusting the running frequency of the electronic watch 10. This computer application is downloadable from a computer service and is compatible in particular with the operating system IOS ® and Android ®.
  • the microcontroller of the portable electronic apparatus 12 executes a sequence of instructions to perform the following steps: i) generating in the portable electronic apparatus 12 a pulsed signal reference datum representative of a reference value; ii) converting the pulsed reference signal into a modulated optical signal; then iii) transmitting the optical signal modulated by the light source 35 to the optical sensor 16 of the electronic watch 10, placing the watch and the electronic device in facing relation and at a short distance from one another, to see one against the other.
  • the deviation of the running frequency of the electronic watch (or run error) with respect to a reference clock has previously been determined by a measuring equipment dedicated for this purpose, marketed in particular by Witschi. Electronic SA.
  • This equipment is capable of estimating the deviation of the operating frequency (or walking error) during a period determined in relation to to a reference clock.
  • the operating frequency could be determined for example by measuring over a period of two seconds the edges between the first and third pulses of the stepper motor by an inductive sensor of the measuring equipment.
  • the deviation of the running 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 setting of the operating frequency will however be less precise. From the estimated deviation, the previously mentioned inhibition value could be calculated and entered in the memory 33.
  • the screen 36 of the portable electronic device 12 includes an interface configured to allow entry of a numerical value when the computer application is operational.
  • the numerical value corresponds to a new value of deviation of the operating frequency, intended to replace or correct the inhibition value entered in the memory 33.
  • This numerical 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 to take into account a positive or negative deviation of the walking frequency, that is to say if the time indicated by the electronic watch is ahead or behind a clock reference.
  • the user / wearer of the electronic watch 10 configures it in a setting mode, for example by actuating a push-button, by pivoting the bezel or the crown of the watch so as to that it is in a certain angular position, or by a single support or by a sequence of supports 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 case of the watch 14 so that the optical sensor 16 can receive directly and capture the light signals emitted by the light source 35.
  • the transmission of the modulated optical signal to the optical sensor 16 is then engaged by interacting with the interface of the portable electronic device 12, for example by pressing a specific area 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 can be deciphered and then sends a signal to a light emitter 41 (a 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 LED may be a light-emitting diode capable of diffusing a green color and a red color to indicate to the user / wearer of the watch whether the transmission has been successfully completed (green LED) or whether an error has occurred during transmission (red light).
  • indicating a successful transmission or transmission error i.e. the state of the transmission
  • Other means for indicating a successful transmission or transmission error can be implemented, for example by rotating one or more hands of the time display. in 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 display type LCD or OLED arranged for example on part of the dial of the electronic watch.
  • the microcontroller 21 of the watch is capable of reconstituting the digital value corresponding to the new deviation of the operating frequency.
  • the microcontroller 21 goes next determining an inhibition value as a function of the reconstituted digital value, then replacing 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 of the second stage of the frequency divider circuit 28 in order to correct the frequency of operation so that it is as close as possible to that desired.
  • the calculation for determining the inhibition value as a function of the desired frequency deviation (or run error) can be achieved by the microcontroller of the portable electronic device 12, before sending 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 of inhibition then write this inhibition value in the appropriate register of the memory 33 of the adjustment circuit 32.
  • the 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. wait (timeout) to avoid unnecessary consumption of the power supply unit 22.
  • the portable electronic device 12 comprises a real-time clock 40 whose frequency has been synchronized beforehand at the frequency of a clock of an external source propagating Coordinated Universal Time UTC.
  • the electronic watch 10 also comprises a real-time clock 40.
  • the computer application is configured to generate in the portable electronic device 12 a pulsed reference signal representative of the time universal UTC.
  • the microcontroller 21 of the electronic watch 10 is configured, according to this embodiment, to successively: i) reconstruct the numerical value of the UTC time; b) comparing said numerical value with a digital value of the real-time clock 40 of the electronic watch 10; and then c) correcting 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 via an NTP network time protocol whose synchronization with the time Real UTC is provided with a typical uncertainty of a few milliseconds, or some tens of milliseconds.
  • the portable electronic device 12 further comprises a satellite positioning system (GNSS) of the GPS or Galileo type.
  • GNSS satellite positioning system
  • the synchronization of the real-time clock 40 of the portable electronic device 12 with the clock frequency of the external source propagating the UTC time can then be achieved via the GNSS.
  • the method of comparing the UTC time with the real-time clock 40 of the electronic watch 10 is independent of a setting of the time performed 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 engine not-to 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 a microphone. an optical sensor (not shown) equipping 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 the server at each iteration of the frequency adjusting method 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. 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 step, to compensate for the influence of temperature on the crystal oscillator.
  • the memory 33 comprises, 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 of inhibition as a function of the temperature, so as to adjust the operating frequency more finely. The process of adjusting the operating frequency can then be used 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 the memory 33.
  • the transmission of a modulated optical signal of the portable electronic device can be done not by one or more light-emitting diodes used normally as a flash but by a modulation of the light emitted by the screen of the device portable electronics.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
EP17202602.3A 2017-03-20 2017-11-20 Verfahren zur regulierung der gangfrequenz einer elektronischen uhr Active EP3379347B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US16/492,960 US11874633B2 (en) 2017-03-20 2018-03-13 Method for adjusting the operating frequency of an electronic watch
JP2019571778A JP6858280B2 (ja) 2017-03-20 2018-03-13 電子時計の動作周波数を調節する方法
KR1020197027499A KR102277882B1 (ko) 2017-03-20 2018-03-13 전자 시계의 동작 주파수를 설정하는 방법
CN201880019442.7A CN110462528B (zh) 2017-03-20 2018-03-13 用于调节电子手表的工作频率的方法
PCT/EP2018/056302 WO2018172147A1 (fr) 2017-03-20 2018-03-13 Procédé de réglage de la fréquence de marche d'une montre électronique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17161866.3A EP3379346B1 (de) 2017-03-20 2017-03-20 Einstellverfahren einer quartzuhr
EP17167994.7A EP3396871A1 (de) 2017-04-25 2017-04-25 Datenübertragungsverfahren von einem elektronischen gerät auf eine elektronische vorrichtung

Publications (2)

Publication Number Publication Date
EP3379347A1 true EP3379347A1 (de) 2018-09-26
EP3379347B1 EP3379347B1 (de) 2020-01-01

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EP17202602.3A Active EP3379347B1 (de) 2017-03-20 2017-11-20 Verfahren zur regulierung der gangfrequenz einer elektronischen uhr

Country Status (6)

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US (1) US11874633B2 (de)
EP (1) EP3379347B1 (de)
JP (1) JP6858280B2 (de)
KR (1) KR102277882B1 (de)
CN (1) CN110462528B (de)
WO (1) WO2018172147A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113031424A (zh) * 2019-12-24 2021-06-25 斯沃奇集团研究及开发有限公司 带有机械机芯和用于校正显示时间的校正装置的时计

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* Cited by examiner, † Cited by third party
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EP3379346B1 (de) * 2017-03-20 2022-08-03 ETA SA Manufacture Horlogère Suisse Einstellverfahren einer quartzuhr
JP6798470B2 (ja) * 2017-11-08 2020-12-09 カシオ計算機株式会社 電子時計、表示制御方法、及びプログラム
EP3779612A1 (de) * 2019-08-16 2021-02-17 The Swatch Group Research and Development Ltd Verfahren und system zur verbreitung einer nachricht an einen träger einer armbanduhr
EP3926418A1 (de) * 2020-06-18 2021-12-22 ETA SA Manufacture Horlogère Suisse Automatische korrektur der uhrzeit und/oder des datums
DE102021116557A1 (de) * 2021-06-25 2022-12-29 Realization Desal Ag Uhr

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EP3079025A1 (de) * 2015-04-10 2016-10-12 Seiko Epson Corporation Kommunikationssystem, elektronische uhr und kommunikationsverfahren

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EP3079025A1 (de) * 2015-04-10 2016-10-12 Seiko Epson Corporation Kommunikationssystem, elektronische uhr und kommunikationsverfahren

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Publication number Priority date Publication date Assignee Title
CN113031424A (zh) * 2019-12-24 2021-06-25 斯沃奇集团研究及开发有限公司 带有机械机芯和用于校正显示时间的校正装置的时计
EP3842876A1 (de) * 2019-12-24 2021-06-30 The Swatch Group Research and Development Ltd Uhr, die mit einem mechanischen uhrwerk und einer vorrichtung zur korrektur der angezeigten stunde ausgestattet ist
CN113031424B (zh) * 2019-12-24 2022-04-01 斯沃奇集团研究及开发有限公司 带有机械机芯和用于校正显示时间的校正装置的时计
US11586150B2 (en) 2019-12-24 2023-02-21 The Swatch Group Research And Development Ltd Timepiece provided with a mechanical movement and a device for correcting a displayed time

Also Published As

Publication number Publication date
EP3379347B1 (de) 2020-01-01
US11874633B2 (en) 2024-01-16
CN110462528B (zh) 2021-03-26
KR20190117699A (ko) 2019-10-16
JP2020510224A (ja) 2020-04-02
US20200019127A1 (en) 2020-01-16
CN110462528A (zh) 2019-11-15
JP6858280B2 (ja) 2021-04-14
WO2018172147A1 (fr) 2018-09-27
KR102277882B1 (ko) 2021-07-15

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