EP3220213B1 - Method and computer program product for setting a clock - Google Patents

Method and computer program product for setting a clock Download PDF

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Publication number
EP3220213B1
EP3220213B1 EP17154574.2A EP17154574A EP3220213B1 EP 3220213 B1 EP3220213 B1 EP 3220213B1 EP 17154574 A EP17154574 A EP 17154574A EP 3220213 B1 EP3220213 B1 EP 3220213B1
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EP
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Prior art keywords
clock
light
information
signal
light signal
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EP17154574.2A
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German (de)
French (fr)
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EP3220213A1 (en
Inventor
Marco Biegert
Andreas Funk
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Qlocktwo License GmbH
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Qlocktwo License GmbH
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Priority to EP18196926.2A priority Critical patent/EP3451082A1/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G11/00—Producing optical signals at preselected times

Definitions

  • the invention relates to a method for setting a clock.
  • clocks There are a large number of clocks that have to be set manually on a regular basis, for example table clocks, wristwatches, wall clocks and grandfather clocks.
  • devices that contain internal clockworks that also have to be set repeatedly by hand, e.g. B. Household appliances, electronic entertainment products, TV sets, music systems, motor vehicles or industrial plants.
  • important functions depend on the correct internal time, e.g. Wake-up and alarm functions, appointment reminders or time-controlled automatic functions such as for time-programmable ovens, dishwashers, parking heaters in automobiles or building energy systems, solar systems or lighting controls.
  • Some watches therefore contain special receiving devices for receiving radio time signals (e.g. DCF77 in Germany), GPS signals or RDS radio signals that also transmit the time information.
  • radio time signals e.g. DCF77 in Germany
  • GPS signals e.g. GPS signals
  • RDS radio signals that also transmit the time information.
  • This data transmission technology is used, for example, in online banking to transmit or generate transaction numbers with the aid of a small mobile device that has to be held up to a computer screen.
  • a method for setting a clock using an electronic device has become known.
  • the watch has an analog display with hands and a battery that is charged via a solar cell.
  • the electronic device compares the position of the hands of the watch with a current time, the position of the hands either being automatically detected or being entered by a user.
  • the deviation determined in this comparison is emitted by the electronic device using a flash as a light signal and received with the help of the solar cell of the watch. Then a controls the hand of the watch according to the received deviation.
  • the steps of the method of claim 1 can be carried out in the order specified.
  • the coding of the information about the current time leads to a sequentially transferable character string. For example, a binary code can be used for this, which leads to a sequence of zeros and ones. In principle, however, any other suitable form of coding is also possible.
  • the information about the current time can be encoded in particular in the mobile electronic device.
  • a flash light of a mobile electronic device is controlled in the invention.
  • the light signal has a relatively high brightness, so that it can be received and evaluated particularly easily.
  • the high brightness in particular leads to a largely insensitivity to fluctuations in the ambient light.
  • the flash light is in particular an LED flash light that can provide a high level of brightness for a short time.
  • the clock to be set has a light sensor, in particular a photodiode or a phototransistor, with which the light signal is received.
  • the light signal is decoded to make the information contained available about the current time. This happens in particular within an electronic control of the watch.
  • the clock is then set according to the information contained in the light sensor about the current time.
  • the method is very easy to carry out for a user, in particular since the steps are carried out essentially fully automatically by an electronic control of the mobile electronic device or the watch. After setting up a corresponding software, the user only needs to execute it and, when the light signal is emitted, to enable it to be received by the clock in order to set the clock. Special knowledge, in particular of how to operate the watch, is not required.
  • Another advantage of the invention is that it is possible to equip a watch with a light sensor using simple and inexpensive components, so that compared to other receiving devices, for example for GPS signals, there are significantly lower costs.
  • the light signal comprises a test code and the clock indicates the correct reception of the light signal by a signal. To do this, it can evaluate the check code and verify the correct transmission of the information in this way.
  • An optical or acoustic display can be provided, for example, to indicate correct reception.
  • the method requires the availability of information about the current time. This can come from any source, for example from a watch contained in the mobile electronic device.
  • the mobile electronic device extracts the information about the current time from a GPS signal, an RDS radio signal or another radio signal or queries the information about the current time from a server via a network.
  • the network can be the Internet or a cellular network, for example. This ensures that the information about the current time used to set the clock is correct.
  • Many mobile electronic devices are already set up for a corresponding evaluation of the signals mentioned or for corresponding queries from a server, so that essentially no additional effort is involved.
  • the brightness of the light signal is varied such that different bits of the bit sequence correspond to different brightnesses.
  • a logic 1 can correspond to a maximum brightness, a logic 0 a minimum brightness or a switched-off state of the flash light.
  • Different definitions are also possible, even when using medium brightness.
  • the brightness of the light signal is varied such that different bits of the bit sequence correspond to light pulses of different lengths.
  • a logic 1 can be a light pulse with a relatively long duration and a logic 0 a light pulse with a smaller one, for example half as much long duration. Reliable transmission of the information is also made possible in this way.
  • the clock is only set when two successive light signals have been received correctly. This prevents the watch from being set incorrectly as a result of unsuccessful data transmission.
  • whether the successive light signals have been received correctly can be verified by evaluating appropriate test codes.
  • the light signals can be emitted at predetermined time intervals in the range of, for example, 0.1 seconds to 10 seconds and contain different time information in accordance with this time interval. Correct reception can then be verified on the clock side by checking the coherence of the transmitted time information or its correspondence with the predetermined or elapsed time interval.
  • the clock is attached to a wall and the light sensor is arranged on a rear side of the clock facing the wall, in particular at a distance from the wall.
  • a wall clock can be set using the method according to the invention without the front of the wall clock being aesthetically impaired by the light sensor.
  • the mobile electronic device can in principle be any portable / manageable device that has a suitable light source that can be controlled in the manner according to the invention. Cameras, for example, but also flashlights, which have lamps suitable for use as flash light, in particular LED lamps, come into consideration. These can be equipped with a corresponding electronic control for use in the method according to the invention.
  • the mobile electronic device can be equipped with a device for receiving or querying information about the current time, for example with a WLAN module. In this way, special mobile electronic devices for setting clocks can be developed, for example in the form of key fobs or the like.
  • the mobile electronic device is a smartphone or a tablet PC. These devices are available in many households and usually have a suitable flash light. By installing appropriate software, also known as an app, these devices can be used particularly easily for the process.
  • the mobile electronic device has a camera and the flash light is designed to illuminate photo motifs.
  • the photo flash light in particular an LED flash light, can generate a high level of brightness due to its intended function for sufficiently illuminating photo motifs, which is a particularly favorable prerequisite for the trouble-free transmission of information.
  • the clock is a wall clock.
  • the wall clock has a display intended for displaying the time.
  • the watch has an electronic control which is designed to evaluate output signals of the light sensor without prior user interaction.
  • the watch is always ready to receive light signals, which further facilitates the execution of the method for the user.
  • the watch can have an operating element with which the watch is put into a readiness to receive light signals.
  • the information about the current time includes a date. It is also possible to transmit more precise time information, for example including a tenth or a hundredth of a second. Depending on the purpose of the clock to be set, the time and / or date can be set precisely. In particular, the date can also include a weekday.
  • the only figure illustrates the implementation of the method using the example of a table clock that is set using a smartphone.
  • the smartphone 10 shown in the hand of a user is a mobile electronic device which has a flashing light 12, more precisely an LED flashing light, on its rear.
  • a computer program runs on the smartphone 10, which encodes information about the current time of day available in the smartphone 10 as a bit sequence and controls the flash light 12 in such a way that a light signal, illustrated by a wavy line 14, is emitted with a brightness which varies according to the bit sequence.
  • the clock 16 has a rectangular front side which has a display 18 which shows the time. Also arranged on the front of the clock 16 is a light sensor 20 which receives the light signal emitted by the flash light 12.
  • the clock 16 also includes an electronic control with which an output signal of the light sensor 20 is evaluated and the light signal is decoded. After successful decoding of the light signal, the clock is set according to the information contained in the light signal about the current time, so that this time is shown by the display 18.
  • the clock 16 is always ready to receive, so that the user does not have to interact with the clock 16 to set the clock. It is sufficient to execute the computer program on the smartphone 10 and to arrange the flash light 12 as illustrated in the figure in such a way that the light signal emitted can be received by the light sensor 20. The steps described above in the clock 16 are then carried out automatically without any user interaction.
  • the light signal contains information about the current time, which is explained in the following example using binary coding. If the information about the current time is, for example, 2:56 p.m. and 30 seconds on Friday, January 30, 2015, this is represented in simplified form as a decimal number 20150130145630. This information is converted into a binary number. This results in the following bit sequence: 1001001010011100100010101100101111001011110, where 1 stands for light and 0 for dark or 1 for a longer pulse and 0 for a short pulse.
  • test algorithm can be transmitted in order to inadvertently valid time signals e.g. excluded by flickering lights.
  • the frequency is selected so that the transmission can be received without errors.
  • the signal is e.g. B. repeated every second with the current time.
  • Control mechanisms can prevent false transmissions, e.g. Two valid and logically consecutive signals can always be sent out before the time in the clock 16 is changed and each bit sequence can be preceded by a detection signal.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Telephone Function (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Stellen einer Uhr.The invention relates to a method for setting a clock.

Es gibt eine Vielzahl von Uhren, die regelmäßig manuell gestellt werden müssen, beispielsweise Tischuhren, Armbanduhren, Wanduhren und Standuhren. Weiterhin gibt es Geräte, die interne Uhrwerke enthalten, die ebenfalls wiederholt von Hand gestellt werden müssen, z. B. Haushaltsgeräte, elektronische Unterhaltungsprodukte, TV-Geräte, Musikanlagen, Kraftfahrzeuge oder Industrieanlagen. In vielen Fällen sind wichtige Funktionen von der korrekten internen Uhrzeit abhängig, z.B. Weck- und Alarmfunktionen, Termin-Erinnerungen oder zeitgesteuerten Automatik-Funktionen wie z.B. bei zeitprogrammierbaren Backöfen, Geschirrspülern, Standheizungen in Automobilen oder Gebäude-Energiesystemen, Solaranlagen oder Lichtsteuerungen.There are a large number of clocks that have to be set manually on a regular basis, for example table clocks, wristwatches, wall clocks and grandfather clocks. There are also devices that contain internal clockworks that also have to be set repeatedly by hand, e.g. B. Household appliances, electronic entertainment products, TV sets, music systems, motor vehicles or industrial plants. In many cases, important functions depend on the correct internal time, e.g. Wake-up and alarm functions, appointment reminders or time-controlled automatic functions such as for time-programmable ovens, dishwashers, parking heaters in automobiles or building energy systems, solar systems or lighting controls.

Durch unterschiedliche Monatslängen, Sommer-/Winterzeit-Wechsel und normale Schwankungen der Ganggenauigkeit von bis zu mehreren Minuten pro Jahr oder Monat (z.B. bei den oft verwendeten Quarzuhrwerken) müssen all diese Uhren mehrmals im Jahr umgestellt oder justiert werden. Wegen der Vielzahl von Uhren und Geräten ist eine möglichst einfache, einheitliche und präzise Einstellung der aktuellen Uhrzeit wünschenswert.Due to different month lengths, summer / winter time changes and normal fluctuations in the accuracy of up to several minutes per year or month (e.g. with the frequently used quartz movements), all these clocks have to be changed or adjusted several times a year. Because of the large number of clocks and devices, it is desirable to set the current time as simply, uniformly and precisely as possible.

Weiterhin gibt es bislang keine Möglichkeit, diese Uhren manuell exakt auf die atomgenaue, "offizielle" Zeit zu stellen, da manuelles Stellen immer eine Toleranz von mehreren Zehntelsekunden oder mehr mit sich bringt. Zudem sind die für das Einstellen der Zeit erforderlichen Benutzeraktionen bzw. Tastenkombinationen bei den Uhren und Geräten erheblich verschieden. Die durchschnittlich in einem Haushalt oder Gewerbebetrieb vorhandene Anzahl von Uhren und Geräten mit Uhrfunktion macht es nahezu unmöglich, z. B. bei der Zeitumstellung alle Uhren mühelos und schnell umzustellen.Furthermore, there is currently no way to manually set these clocks exactly to the atomic, "official" time, since manual setting always entails a tolerance of several tenths of a second or more. In addition, the user actions or key combinations required for setting the time on the clocks and devices are considerably different. The average number of clocks and devices with clock function in a household or commercial enterprise makes it almost impossible, e.g. B. when changing the time all clocks quickly and easily.

Häufig muss zusätzlich das Datum regelmäßig umgestellt werden, da viele Geräte keinen internen "ewigen" Kalender besitzen und daher nicht erkennen können, wie viele Tage der aktuelle Monat hat und ob das aktuelle Jahr z.B. ein Schaltjahr ist oder nicht. Die Folge ist, dass bei vielen Uhren das Datum schon nach einem Monat vom tatsächlichen Datum abweicht.Often, the date must also be changed regularly, since many devices do not have an internal "perpetual" calendar and therefore cannot see how many days the current month has and whether the current year e.g. is a leap year or not. The result is that with many watches the date deviates from the actual date after just one month.

Einige Uhren beinhalten deshalb spezielle Empfangsvorrichtungen zum Empfang von Funk-Zeitsignalen (in Deutschland z.B. DCF77), von GPS-Signalen oder von RDS-Radiosignalen, die die Zeitinformation mit übertragen.Some watches therefore contain special receiving devices for receiving radio time signals (e.g. DCF77 in Germany), GPS signals or RDS radio signals that also transmit the time information.

Diese Techniken haben jedoch erhebliche Nachteile, denn sie sind einerseits fehleranfällig, da es infolge stark schwankender Signalstärken immer wieder zu Empfangsproblemen kommt, gerade in Innenräumen, und andererseits aufgrund ihrer Komplexität und erforderlichen Empfindlichkeit technisch aufwendig und in der Produktion kostenintensiv. Außerdem sind sie kaum weltweit einsetzbar, da es an international einheitlichen Standards fehlt und die entsprechenden Signale in vielen Gebieten überhaupt nicht empfangen werden können.However, these techniques have considerable disadvantages, because on the one hand they are susceptible to errors, since reception problems often occur due to strongly fluctuating signal strengths, especially indoors, and on the other hand, due to their complexity and the required sensitivity, they are technically complex and costly to produce. In addition, they can hardly be used worldwide because there are no internationally uniform standards and the corresponding signals cannot be received at all in many areas.

Ebenfalls bekannt ist, durch Modulieren der Helligkeit einer Bildschirmdarstellung Daten an ein mobiles elektronisches Gerät zu übertragen. Diese Datenübertragungstechnik wird beispielsweise im Online-Banking zum Übertragen bzw. Erzeugen von Transaktionsnummern mit Hilfe eines kleinen Mobilgeräts, das an einen Computerbildschirm gehalten werden muss, verwendet.It is also known to transmit data to a mobile electronic device by modulating the brightness of a screen display. This data transmission technology is used, for example, in online banking to transmit or generate transaction numbers with the aid of a small mobile device that has to be held up to a computer screen.

Aus dem US-Patent Nr. 5,488,571 ist ein vergleichbares Datenübertragungsverfahren bekannt geworden, bei dem die Helligkeit einer Anzeige eines Röhrenmonitors moduliert wird, um beispielsweise Kalendereinträge an einen PDA (personal digital assistant) oder eine Armbanduhr zu übertragen.From the U.S. Patent No. 5,488,571 A comparable data transmission method has become known in which the brightness of a display of a tube monitor is modulated, for example, to transfer calendar entries to a PDA ( personal digital assistant ) or a wristwatch.

Aus der Druckschrift WO 2015/072281 A1 ist ein Verfahren zum Stellen einer Uhr mit Hilfe eines elektronischen Geräts, insbesondere eines Smartphones, bekannt geworden. Die Uhr hat eine analoge Anzeige mit Zeigern und eine Batterie, die über eine Solarzelle aufgeladen wird. Zum Stellen der Uhr vergleicht das elektronische Gerät die Zeigerstellung der Uhr mit einer aktuellen Uhrzeit, wobei die Zeigerstellung entweder automatisch erfasst oder von einem Benutzer eingegeben wird. Die in diesem Vergleich ermittelte Abweichung wird von dem elektronischen Gerät unter Verwendung eines Blitzlichts als Lichtsignal ausgesendet und mit Hilfe der Solarzelle der Uhr empfangen. Anschließend steuert ein steuert den Zeiger der Uhr entsprechend der empfangenen Abweichung an.From the publication WO 2015/072281 A1 A method for setting a clock using an electronic device, in particular a smartphone, has become known. The watch has an analog display with hands and a battery that is charged via a solar cell. To set the clock, the electronic device compares the position of the hands of the watch with a current time, the position of the hands either being automatically detected or being entered by a user. The deviation determined in this comparison is emitted by the electronic device using a flash as a light signal and received with the help of the solar cell of the watch. Then a controls the hand of the watch according to the received deviation.

Davon ausgehend ist es die Aufgabe der Erfindung, ein Verfahren zum Stellen einer Uhr, mit denen das Stellen einer Uhr vereinfacht werden kann.Based on this, it is the object of the invention to provide a method for setting a clock with which the setting of a clock can be simplified.

Diese Aufgabe wird gelöst durch das Verfahren mit den Merkmalen des Anspruchs 1. Vorteilhafte Ausgestaltungen sind in den sich anschließenden Unteransprüchen angegeben.This object is achieved by the method having the features of claim 1. Advantageous refinements are specified in the subsequent subclaims.

Die Schritte des Verfahrens des Anspruchs 1 können in der angegebenen Reihenfolge ausgeführt werden. Das Codieren der Information über die aktuelle Uhrzeit führt zu einer sequentiell übertragbaren Zeichenfolge. Hierzu kann beispielsweise ein Binärcode verwendet werden, der zu einer Folge von Nullen und Einsen führt. Grundsätzlich ist jedoch auch jede andere geeignete Form der Codierung möglich. Das Codieren der Information über die aktuelle Uhrzeit kann insbesondere in dem mobilen elektronischen Gerät erfolgen.The steps of the method of claim 1 can be carried out in the order specified. The coding of the information about the current time leads to a sequentially transferable character string. For example, a binary code can be used for this, which leads to a sequence of zeros and ones. In principle, however, any other suitable form of coding is also possible. The information about the current time can be encoded in particular in the mobile electronic device.

Zur Aussendung eines Lichtsignals mit entsprechend der Bitfolge variierender Helligkeit wird bei der Erfindung ein Blitzlicht eines mobilen elektronischen Geräts angesteuert. Dadurch weist das Lichtsignal eine relativ große Helligkeit auf, sodass es besonders einfach empfangen und ausgewertet werden kann. Die große Helligkeit führt insbesondere zu einer weitgehenden Unempfindlichkeit gegenüber Schwankungen des Umgebungslichts. Das Blitzlicht ist insbesondere ein LED-Blitzlicht, das kurzzeitig eine große Helligkeit liefern kann.In order to emit a light signal with brightness varying according to the bit sequence, a flash light of a mobile electronic device is controlled in the invention. As a result, the light signal has a relatively high brightness, so that it can be received and evaluated particularly easily. The high brightness in particular leads to a largely insensitivity to fluctuations in the ambient light. The flash light is in particular an LED flash light that can provide a high level of brightness for a short time.

Die zu stellende Uhr weist einen Lichtsensor, insbesondere eine Photodiode oder einen Phototransistor, auf, mit dem das Lichtsignal empfangen wird. Das Lichtsignal wird decodiert, um die enthaltene Information über die aktuelle Uhrzeit verfügbar zu machen. Dies geschieht insbesondere innerhalb einer elektronischen Steuerung der Uhr. Anschließend wird die Uhr gemäß den im Lichtsensor enthaltenen Informationen über die aktuelle Uhrzeit gestellt.The clock to be set has a light sensor, in particular a photodiode or a phototransistor, with which the light signal is received. The light signal is decoded to make the information contained available about the current time. This happens in particular within an electronic control of the watch. The clock is then set according to the information contained in the light sensor about the current time.

Das Verfahren ist für einen Benutzer sehr einfach auszuführen, insbesondere da die Schritte im Wesentlichen vollautomatisch von einer elektronischen Steuerung des mobilen elektronischen Geräts bzw. der Uhr ausgeführt werden. Nach Einrichtung einer entsprechenden Software braucht der Benutzer diese lediglich auszuführen und beim Aussenden des Lichtsignals dessen Empfang auf Seiten der Uhr zu ermöglichen, um die Uhr zu stellen. Spezielle Kenntnisse insbesondere über die Bedienung der Uhr sind hierfür nicht erforderlich.The method is very easy to carry out for a user, in particular since the steps are carried out essentially fully automatically by an electronic control of the mobile electronic device or the watch. After setting up a corresponding software, the user only needs to execute it and, when the light signal is emitted, to enable it to be received by the clock in order to set the clock. Special knowledge, in particular of how to operate the watch, is not required.

Ein weiterer Vorteil der Erfindung ist, dass die Ausrüstung einer Uhr mit einem Lichtsensor unter Verwendung einfacher und kostengünstiger Bauteile möglich ist, sodass im Vergleich zu anderen Empfangseinrichtungen, beispielsweise für GPS-Signale, deutlich geringere Kosten entstehen.Another advantage of the invention is that it is possible to equip a watch with a light sensor using simple and inexpensive components, so that compared to other receiving devices, for example for GPS signals, there are significantly lower costs.

In einer Ausgestaltung umfasst das Lichtsignal einen Prüfcode und die Uhr zeigt den korrekten Empfang des Lichtsignals durch ein Signal an. Hierzu kann sie den Prüfcode auswerten und die korrekte Übertragung der Informationen auf diese Weise verifizieren. Zum Anzeigen des korrekten Empfangs kann beispielsweise eine optische oder akustische Anzeige vorgesehen sein.In one embodiment, the light signal comprises a test code and the clock indicates the correct reception of the light signal by a signal. To do this, it can evaluate the check code and verify the correct transmission of the information in this way. An optical or acoustic display can be provided, for example, to indicate correct reception.

Das Verfahren setzt die Verfügbarkeit einer Information über die aktuelle Uhrzeit voraus. Diese kann von einer beliebigen Quelle stammen, beispielsweise von einer in dem mobilen elektronischen Gerät enthaltenen Uhr. In einer Ausgestaltung entnimmt das mobile elektronische Gerät die Information über die aktuelle Uhrzeit einem GPS-Signal, einem RDS-Radiosignal oder einem sonstigen Funksignal oder fragt die Information über die aktuelle Uhrzeit über ein Netzwerk von einem Server ab. Das Netzwerk kann beispielsweise das Internet oder ein Mobilfunknetz sein. Auf diese Weise wird sichergestellt, dass die zum Stellen der Uhr verwendete Information über die aktuelle Uhrzeit korrekt ist. Viele mobile elektronische Geräte sind bereits für eine entsprechende Auswertung der genannten Signale oder für entsprechende Abfragen eines Servers eingerichtet, sodass hierfür im Wesentlichen kein zusätzlicher Aufwand entsteht.The method requires the availability of information about the current time. This can come from any source, for example from a watch contained in the mobile electronic device. In one embodiment, the mobile electronic device extracts the information about the current time from a GPS signal, an RDS radio signal or another radio signal or queries the information about the current time from a server via a network. The network can be the Internet or a cellular network, for example. This ensures that the information about the current time used to set the clock is correct. Many mobile electronic devices are already set up for a corresponding evaluation of the signals mentioned or for corresponding queries from a server, so that essentially no additional effort is involved.

In einer Ausgestaltung wird die Helligkeit des Lichtsignals derart variiert, dass unterschiedlichen Bits der Bitfolge unterschiedliche Helligkeiten entsprechen. Beispielsweise kann einer logischen 1 eine maximale Helligkeit, einer logischen 0 eine minimale Helligkeit bzw. ein abgeschalteter Zustand des Blitzlichts entsprechen. Auch abweichende Festlegungen sind möglich, auch unter Verwendung mittlerer Helligkeiten.In one embodiment, the brightness of the light signal is varied such that different bits of the bit sequence correspond to different brightnesses. For example, a logic 1 can correspond to a maximum brightness, a logic 0 a minimum brightness or a switched-off state of the flash light. Different definitions are also possible, even when using medium brightness.

In einer Ausgestaltung wird die Helligkeit des Lichtsignals derart variiert, dass unterschiedlichen Bits der Bitfolge unterschiedlich lange Lichtpulse entsprechen. Beispielsweise kann einer logischen 1 ein Lichtpuls mit einer relativ großen Dauer und einer logischen 0 ein Lichtpuls mit einer kleineren, beispielsweise halb so langen Dauer, entsprechen. Auch auf diese Weise wird eine zuverlässige Übertragung der Information ermöglicht.In one configuration, the brightness of the light signal is varied such that different bits of the bit sequence correspond to light pulses of different lengths. For example, a logic 1 can be a light pulse with a relatively long duration and a logic 0 a light pulse with a smaller one, for example half as much long duration. Reliable transmission of the information is also made possible in this way.

In einer Ausgestaltung werden mehrere Lichtsignale nacheinander ausgesendet und die Uhr wird erst dann gestellt, wenn zwei aufeinanderfolgende Lichtsignale korrekt empfangen worden sind. Dadurch wird ein fehlerhaftes Stellen der Uhr infolge einer misslungenen Datenübertragung vermieden. Ob die aufeinanderfolgenden Lichtsignale korrekt empfangen worden sind, kann wiederum durch Auswertung entsprechender Prüfcodes verifiziert werden. Alternativ oder zusätzlich können die Lichtsignale in vorgegebenen Zeitabständen im Bereich von beispielsweise 0,1 Sekunden bis 10 Sekunden ausgesendet werden und entsprechend dieses Zeitabstands unterschiedliche Uhrzeitinformationen enthalten. Der korrekte Empfang kann dann auf Seiten der Uhr verifiziert werden, indem die Schlüssigkeit der übertragenen Uhrzeitinformationen bzw. deren Übereinstimmung mit dem vorgegebenen oder verstrichenen Zeitabstand überprüft wird.In one embodiment, several light signals are transmitted in succession and the clock is only set when two successive light signals have been received correctly. This prevents the watch from being set incorrectly as a result of unsuccessful data transmission. In turn, whether the successive light signals have been received correctly can be verified by evaluating appropriate test codes. Alternatively or additionally, the light signals can be emitted at predetermined time intervals in the range of, for example, 0.1 seconds to 10 seconds and contain different time information in accordance with this time interval. Correct reception can then be verified on the clock side by checking the coherence of the transmitted time information or its correspondence with the predetermined or elapsed time interval.

Bei der Erfindung ist die Uhr an einer Wand befestigt und der Lichtsensor ist an einer der Wand zugewandten Rückseite der Uhr angeordnet, insbesondere in einem Abstand von der Wand. Auf diese Weise kann eine Wanduhr mit dem erfindungsgemäßen Verfahren gestellt werden, ohne dass die Frontseite der Wanduhr ästhetisch von dem Lichtsensor beeinträchtigt wird. Insbesondere ist daran gedacht, bei der Übertragung des Lichtsignals eine Reflexion des Lichts an der Wand auszunutzen.In the invention, the clock is attached to a wall and the light sensor is arranged on a rear side of the clock facing the wall, in particular at a distance from the wall. In this way, a wall clock can be set using the method according to the invention without the front of the wall clock being aesthetically impaired by the light sensor. In particular, it is contemplated to use a reflection of the light on the wall when transmitting the light signal.

Das mobile elektronische Gerät kann grundsätzlich jedes tragbare/handhabbare Gerät sein, dass eine geeignete Lichtquelle aufweist, die in erfindungsgemäßer Weise angesteuert werden kann. In Betracht kommen beispielsweise Fotoapparate, aber auch Taschenlampen, die zur Verwendung als Blitzlicht geeignete Leuchtmittel aufweisen, insbesondere LED-Leuchtmittel. Diese können zur Verwendung für das erfindungsgemäße Verfahren mit einer entsprechenden elektronischen Steuerung ausgestattet werden. Zusätzlich kann das mobile elektronische Gerät mit einer Einrichtung zum Empfangen bzw. Abfragen der Information über die aktuelle Uhrzeit ausgerüstet werden, zum Beispiel mit einem WLAN-Modul. Auf diese Weise können spezielle mobile elektronische Geräte zum Stellen von Uhren entwickelt werden, zum Beispiel in Form von Schlüsselanhängern oder dergleichen. In einer Ausgestaltung ist das mobile elektronische Gerät ein Smartphone oder ein Tablet-PC. Diese Geräte sind in vielen Haushalten vorhanden und weisen in der Regel ein geeignetes Blitzlicht auf. Durch Installieren einer entsprechenden Software, auch bezeichnet als App, können diese Geräte besonders einfach für das Verfahren genutzt werden.The mobile electronic device can in principle be any portable / manageable device that has a suitable light source that can be controlled in the manner according to the invention. Cameras, for example, but also flashlights, which have lamps suitable for use as flash light, in particular LED lamps, come into consideration. These can be equipped with a corresponding electronic control for use in the method according to the invention. In addition, the mobile electronic device can be equipped with a device for receiving or querying information about the current time, for example with a WLAN module. In this way, special mobile electronic devices for setting clocks can be developed, for example in the form of key fobs or the like. In one embodiment, the mobile electronic device is a smartphone or a tablet PC. These devices are available in many households and usually have a suitable flash light. By installing appropriate software, also known as an app, these devices can be used particularly easily for the process.

In einer Ausgestaltung weist das mobile elektronische Gerät eine Kamera auf und das Blitzlicht ist zur Beleuchtung von Fotomotiven ausgebildet. Das Foto-Blitzlicht, insbesondere ein LED-Blitzlicht, kann aufgrund seiner vorgesehenen Funktion zur ausreichenden Beleuchtung von Fotomotiven eine große Helligkeit erzeugen, was für die störungsfreie Informationsübertragung eine besonders günstige Voraussetzung ist.In one embodiment, the mobile electronic device has a camera and the flash light is designed to illuminate photo motifs. The photo flash light, in particular an LED flash light, can generate a high level of brightness due to its intended function for sufficiently illuminating photo motifs, which is a particularly favorable prerequisite for the trouble-free transmission of information.

In einer Ausgestaltung ist die Uhr eine Wanduhr. Die Wanduhr weist eine für das Anzeigen der Zeit vorgesehene Anzeige auf.In one embodiment, the clock is a wall clock. The wall clock has a display intended for displaying the time.

In einer Ausgestaltung weist die Uhr eine elektronische Steuerung auf, die dazu ausgebildet ist, ohne eine vorherige Benutzerinteraktion Ausgangssignale des Lichtsensors auszuwerten. Die Uhr ist ständig zum Empfang von Lichtsignalen bereit, was die Ausführung des Verfahrens für den Benutzer weiter erleichtert. Alternativ kann die Uhr ein Bedienelement aufweisen, mit dem die Uhr in eine Empfangsbereitschaft für Lichtsignale versetzt wird.In one configuration, the watch has an electronic control which is designed to evaluate output signals of the light sensor without prior user interaction. The watch is always ready to receive light signals, which further facilitates the execution of the method for the user. As an alternative, the watch can have an operating element with which the watch is put into a readiness to receive light signals.

In einer Ausgestaltung umfasst die Information über die aktuelle Uhrzeit eine Datumsangabe. Ebenfalls möglich ist eine Übertragung noch genauerer Zeitinformationen, beispielsweise einschließlich einer Zehntel- oder Hundertstelsekundenangabe. Je nach Verwendungszweck der zu stellenden Uhr kann dadurch eine präzise Einstellung von Zeit und/oder Datum erfolgen. Die Datumsangabe kann insbesondere auch die Angabe eines Wochentags umfassen.In one embodiment, the information about the current time includes a date. It is also possible to transmit more precise time information, for example including a tenth or a hundredth of a second. Depending on the purpose of the clock to be set, the time and / or date can be set precisely. In particular, the date can also include a weekday.

Nachfolgend wird die Erfindung anhand eines in einer Figur dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment shown in a figure.

Die einzige Figur veranschaulicht die Ausführung des Verfahrens am Beispiel einer Tischuhr, die mit Hilfe eines Smartphones gestellt wird.The only figure illustrates the implementation of the method using the example of a table clock that is set using a smartphone.

Das in der Hand eines Benutzers dargestellte Smartphone 10 ist ein mobiles elektronisches Gerät, das an seiner Rückseite ein Blitzlicht 12, genauer ein LED-Blitzlicht, aufweist. Auf dem Smartphone 10 läuft ein Computerprogramm, das eine im Smartphone 10 verfügbare Information über die aktuelle Uhrzeit als Bitfolge codiert und das Blitzlicht 12 derart ansteuert, dass ein Lichtsignal, veranschaulicht durch eine Wellenlinie 14, mit entsprechend der Bitfolge variierender Helligkeit ausgesendet wird.The smartphone 10 shown in the hand of a user is a mobile electronic device which has a flashing light 12, more precisely an LED flashing light, on its rear. A computer program runs on the smartphone 10, which encodes information about the current time of day available in the smartphone 10 as a bit sequence and controls the flash light 12 in such a way that a light signal, illustrated by a wavy line 14, is emitted with a brightness which varies according to the bit sequence.

Die Uhr 16 hat eine rechteckige Frontseite, die eine Anzeige 18 aufweist, welche die Uhrzeit darstellt. Ebenfalls an der Frontseite der Uhr 16 ist ein Lichtsensor 20 angeordnet, der das von dem Blitzlicht 12 ausgesendete Lichtsignal empfängt.The clock 16 has a rectangular front side which has a display 18 which shows the time. Also arranged on the front of the clock 16 is a light sensor 20 which receives the light signal emitted by the flash light 12.

Die Uhr 16 umfasst darüber hinaus eine elektronische Steuerung, mit der ein Ausgangssignal des Lichtsensors 20 ausgewertet und das Lichtsignal decodiert wird. Nach erfolgreicher Decodierung des Lichtsignals wird die Uhr gemäß der in dem Lichtsignal enthaltenen Informationen über die aktuelle Uhrzeit gestellt, sodass diese Uhrzeit von der Anzeige 18 dargestellt wird.The clock 16 also includes an electronic control with which an output signal of the light sensor 20 is evaluated and the light signal is decoded. After successful decoding of the light signal, the clock is set according to the information contained in the light signal about the current time, so that this time is shown by the display 18.

Die Uhr 16 ist ständig empfangsbereit, sodass der Benutzer keinerlei Interaktion mit der Uhr 16 ausführen muss, um die Uhr zu stellen. Es genügt, das Computerprogramm auf dem Smartphone 10 auszuführen und das Blitzlicht 12 wie in der Figur veranschaulicht so anzuordnen, dass das ausgesendete Lichtsignal von dem Lichtsensor 20 empfangen werden kann. Die in der Uhr 16 ablaufenden, vorstehend erläuterten Schritte werden dann automatisch, ohne jede Benutzerinteraktion ausgeführt.The clock 16 is always ready to receive, so that the user does not have to interact with the clock 16 to set the clock. It is sufficient to execute the computer program on the smartphone 10 and to arrange the flash light 12 as illustrated in the figure in such a way that the light signal emitted can be received by the light sensor 20. The steps described above in the clock 16 are then carried out automatically without any user interaction.

Das Lichtsignal enthält eine Information über die aktuelle Uhrzeit, was in folgendem Beispiel unter Verwendung einer binären Codierung erläutert wird. Lautet die Information über die aktuelle Uhrzeit beispielsweise 14:56 Uhr und 30 Sekunden am Freitag, dem 30. Januar 2015, wird dies vereinfacht dargestellt als Dezimalzahl 20150130145630. Diese Information wird in eine Binärzahl umgewandelt. Dies ergibt die folgende Bitfolge:
100100101001110010001010110010111100101011110,
wobei 1 für hell und 0 für dunkel steht oder 1 für längerer Impuls und 0 für kurzer Impuls.The light signal contains information about the current time, which is explained in the following example using binary coding. If the information about the current time is, for example, 2:56 p.m. and 30 seconds on Friday, January 30, 2015, this is represented in simplified form as a decimal number 20150130145630. This information is converted into a binary number. This results in the following bit sequence:
100100101001110010001010110010111100101011110,
where 1 stands for light and 0 for dark or 1 for a longer pulse and 0 for a short pulse.

Zudem kann noch ein Prüfalgorithmus übertragen werden, um versehentlich gültige Zeitsignale z.B. durch flackernde Lichter auszuschließen.In addition, a test algorithm can be transmitted in order to inadvertently valid time signals e.g. excluded by flickering lights.

Die Frequenz wird so gewählt, dass die Übertragung fehlerfrei empfangen werden kann. Das Signal wird z. B. in Sekundenabständen mit der aktuellen Uhrzeit wiederholt. Kontrollmechanismen können Fehlübertragungen verhindern, z.B. können immer zwei gültige und logisch aufeinanderfolgende Signale ausgesendet werden, bevor eine Umstellung der Zeit in der Uhr 16 erfolgt und es kann jeder Bitfolge ein Erkennungssignal vorangestellt werden.The frequency is selected so that the transmission can be received without errors. The signal is e.g. B. repeated every second with the current time. Control mechanisms can prevent false transmissions, e.g. Two valid and logically consecutive signals can always be sent out before the time in the clock 16 is changed and each bit sequence can be preceded by a detection signal.

Claims (11)

  1. A method for setting a clock (16) fastened to a wall using the following steps:
    • encoding information on the current time that comprises hour, minute and second information as a bit sequence,
    • actuating a flash (12) of a mobile electronic device that emits a light signal with a brightness which varies corresponding to the bit sequence,
    • receiving the light signal by means of a light sensor (20) of the clock (16), wherein the light sensor (20) is arranged on a rear of the clock (16) facing the wall,
    • decoding the light signal, and
    • setting the clock (16) according to the information on the current time contained in the light signal.
  2. The method according to claim 1, characterized in that the light signal comprises a verification code, and the clock (16) indicates the correct reception of the light signal by a signal.
  3. The method according to claim 1 or 2, characterized in that the mobile electronic device gathers the information on the current time from a GPS signal, an RDS radio signal, or another radio signal, or requests the information on the current time from a server via a network.
  4. The method according to one of claims 1 to 3, characterized in that the brightness of the light signal is varied so that different brightnesses correspond to different bits of the bit sequence.
  5. The method according to one of claims 1 to 4, characterized in that the brightness of the light signal is varied so that light pulses of different lengths correspond to different bits of the bit sequence.
  6. The method according to one of claims 1 to 5, characterized in that a plurality of light signals are sent sequentially, and the clock (16) is only set after two sequential light signals have been correctly received.
  7. The method according to one of claims 1 to 6, characterized in that the mobile electronic device is a smart phone (10) or a tablet computer.
  8. The method according to one of claims 1 to 7, characterized in that the mobile electronic device has a camera, and the flash (12) is designed to illuminate photographic subjects.
  9. The method according to one of claims 1 to 8, characterized in that the clock (16) is a wall clock.
  10. The method according to one of claims 1 to 9, characterized in that the clock (16) has an electronic control which is configured to evaluate output signals from the light sensor (20) without a previous user interaction.
  11. The method according to one of claims 1 to 10, characterized in that the information on the current time comprises date information.
EP17154574.2A 2016-03-16 2017-02-03 Method and computer program product for setting a clock Active EP3220213B1 (en)

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EP18196926.2A Division-Into EP3451082A1 (en) 2016-03-16 2017-02-03 Method and computer program product for setting a clock

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EP3379346B1 (en) * 2017-03-20 2022-08-03 ETA SA Manufacture Horlogère Suisse Method for adjusting a quartz watch

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US5488571A (en) 1993-11-22 1996-01-30 Timex Corporation Method and apparatus for downloading information from a controllable light source to a portable information device
US5777950A (en) * 1996-11-21 1998-07-07 Timex Corporation Method and apparatus for transferring time information to a watch
US10210750B2 (en) * 2011-09-13 2019-02-19 Lutron Electronics Co., Inc. System and method of extending the communication range in a visible light communication system
CN105723286B (en) * 2013-11-12 2018-11-13 精工电子有限公司 Moment update the system, electronic equipment, clock and watch and recording medium
DE102014116531A1 (en) * 2014-11-12 2016-05-12 Itz Innovations- Und Technologiezentrum Gmbh Wireless programmable LED control gear

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