EP0185160A2 - Radio-controlled time piece - Google Patents
Radio-controlled time piece Download PDFInfo
- Publication number
- EP0185160A2 EP0185160A2 EP85112962A EP85112962A EP0185160A2 EP 0185160 A2 EP0185160 A2 EP 0185160A2 EP 85112962 A EP85112962 A EP 85112962A EP 85112962 A EP85112962 A EP 85112962A EP 0185160 A2 EP0185160 A2 EP 0185160A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- clock
- radio
- pointer
- quartz
- time
- 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.)
- Withdrawn
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Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C13/00—Driving mechanisms for clocks by master-clocks
- G04C13/02—Circuit arrangements; Electric clock installations
- G04C13/021—Circuit arrangements; Electric clock installations master-slave systems using transmission of singular pulses for driving directly slave-clocks step by step
- G04C13/026—Circuit arrangements; Electric clock installations master-slave systems using transmission of singular pulses for driving directly slave-clocks step by step by radio
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/08—Setting the time according to the time information carried or implied by the radio signal the radio signal being broadcast from a long-wave call sign, e.g. DCF77, JJY40, JJY60, MSF60 or WWVB
Definitions
- the invention relates to a radio-controlled watch according to the preamble of claim 1.
- Radio controlled clocks belong to the state of the art.
- This radio broadcast signal contains in coded form the information about minutes, hours, calendar days, weekday, calendar month, calendar year and is broadcast every minute.
- a description of the signal and the possible processing of the signal can be found in the reference "Elektor", October 1980, page 10-44 ff.
- radio clock proposed there is only suitable for a structure with a digital display, not for a structure with hands which provide an analog or quasi-analog display of the time.
- a radio controlled clock with hands is known. It is provided that on the one hand the radio signal is fed to a computing circuit and on the other hand the content of a memory corresponds to the position of the pointer. The synchronization of the clock can be monitored by comparing the coded radio signal with the memory content at certain intervals.
- the object of the invention is to provide a generic watch that adjusts itself automatically when the position of the hands does not match the actual time.
- a radio-controlled watch which, on the one hand, obtains the time information from the coded radio signal and, according to the pulses, passes on the hands of a watch.
- a quartz clock is controlled via the receiving part, which receives the radio impulses.
- the quartz clock transmits indexing pulses to a control unit, which passes the pointers on.
- the quartz clock takes over the switching of the hands in order to switch back to the radio signal control when the radio signal is received again.
- a sensor is assigned to the hour and minute hands, and possibly also to the second hand, the sensors being provided stationary on the dial.
- the sensors can preferably be reed relays that respond to small magnets that are integrated in the pointer.
- other sensors for example on an optical basis, are also conceivable.
- a comparison device checks each time the sensors overflow through the hands to determine whether the position of the hands matches the quartz time.
- the sub-claims characterize a preferred embodiment of the watch.
- a structure is described in subclaim 4, in which the pointer part of the clock with associated quartz clock is accommodated in a mobile unit, while the radio receiving part is accommodated in a stationary one Unit is provided.
- the stationary unit consists of a conventional radio clock, which can also be used as a timer by electronically storing the manually entered switching times in a non-volatile memory.
- the main task of the stationary unit is to send the current time information by radio, infrared or ultrasound.
- the free-running quartz watch which controls the hands with the corresponding sensors, is accommodated in the mobile unit, which can expediently consist of a wristwatch.
- the mobile unit also contains a suitable receiver for the signals from the stationary unit.
- the mobile unit e.g. B. the wristwatch
- the current time is passed through the information from the stationary unit to the mobile unit.
- the mobile unit with quartz clock and pointer display can, if necessary, be compared again with the radio signal which contains the coded time information.
- the method claims describe a method for operating the clock according to the invention.
- the clock is set again.
- the clock is also set immediately when switched on or even after a power failure.
- the information about the pointer position is obtained in that minute pulses, with the presence of a second hand with the corresponding sensor, second pulses, are generated at an increased frequency until the sensors of the hands have detected the predetermined pointer position and a defined starting position is reached.
- the use of reed relays has the advantage that the pointer position can be queried without energy consumption, and miniature switches and magnets can also be attached very small and compact to the pointer and dial. The reliability and resistance to the pointing are also cheaper than when using purely mechanical switching elements.
- the radio clock controls the quartz clock and the quartz clock controls the hands.
- the coincidence of the quartz clock and the position of the hands is monitored twice a day.
- the figure shows a block diagram.
- a receiving unit which receives the coded radio signal from an antenna.
- the receiving unit controls a subsequent computing unit in which the radio signal is evaluated and the time information is filtered out of the coding of the radio signal.
- the processing unit supplies this prepared time signal to a comparison unit.
- This comparison unit measures whether there is a radio signal at all. If there is no radio signal, the comparison unit switches. to a free-running quartz clock, which also feeds its signal to the comparison unit. Is there a radio signal, the radio signal is constantly z. B. compared in minutes with the quartz clock signal, and in the event of deviations from one another, the quartz clock signal is synchronized with the radio signal.
- the comparison unit controls a control unit which forwards the indexing pulses, one pulse per second at seconds, one pulse at minute hands per minute, to the pointers.
- this signal is passed on via the comparison unit, but if the signal from the computing unit is missing, the quartz clock signal is fed to the control unit.
- the watch activates a query which consists of the fixed sensors which poll the predefined pointer position of the watch every twelve hours.
- the query is fed to an actuating unit, which also receives the quartz time. If the result of the query does not match the quartz time, the control unit in turn controls the control unit with increased frequency, so that fast pulses advance the clock until the clock, starting from the predetermined hand position, again indicates the time obtained from the comparison unit.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
- Electric Clocks (AREA)
Abstract
Description
Die Erfindung betrifft eine funkgesteuerte Uhr gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a radio-controlled watch according to the preamble of claim 1.
Funkgesteuerte Uhren gehören zum Stand der Technik.Radio controlled clocks belong to the state of the art.
Es handelt sich dabei um Uhren, die über einen Langwellensender ein Zeitsignal erhalten. Dieses über Funk ausgestrahlte Signal enthält in codierter Form die Informationen über Minuten, Stunden, Kalendertagen, Wochentag, Kalendermonat, Kalenderjahr und wird jede Minute ausgestrahlt. Eine Beschreibung des Signals und der möglichen Aufbereitung des Signals findet sich in der Literaturstelle "Elektor", Oktober 1980, Seite 10-44 ff.These are clocks that receive a time signal via a long-wave transmitter. This radio broadcast signal contains in coded form the information about minutes, hours, calendar days, weekday, calendar month, calendar year and is broadcast every minute. A description of the signal and the possible processing of the signal can be found in the reference "Elektor", October 1980, page 10-44 ff.
Die dort vorgeschlagene Funkuhr ist jedoch nur für einen Aufbau mit Digitalanzeige geeignet, nicht für einen Aufbau mit Zeigern, die eine analoge oder quasianaloge Anzeige der Zeit liefern.However, the radio clock proposed there is only suitable for a structure with a digital display, not for a structure with hands which provide an analog or quasi-analog display of the time.
Aus der DE-OS 32 00 409 ist eine funkgesteuerte Uhr mit Zeigern bekannt. Dabei ist vorgesehen, daß einerseits einer Rechenschaltung das Funksignal zugeführt wird, und andererseits ein Speicher in seinem Inhalt mit der Zeigerstellung übereinstimmt. Durch einen Vergleich des codierten Funksignals mit dem Speicherinhalt in bestimmten Abständen kann die Synchronisation der Uhr überwacht werden.From DE-OS 32 00 409 a radio controlled clock with hands is known. It is provided that on the one hand the radio signal is fed to a computing circuit and on the other hand the content of a memory corresponds to the position of the pointer. The synchronization of the clock can be monitored by comparing the coded radio signal with the memory content at certain intervals.
Dieser Vorschlag setzt jedoch voraus, daß Zeigerstellung und Speicherinhalt nicht voneinander abweichen, was jedoch durch keine zusätzlichen Maßnahmen überwacht wird.However, this proposal assumes that the pointer position and the memory content do not differ, which is, however, not monitored by any additional measures.
Aufgabe der Erfindung ist es, eine gattungsgemäße Uhr zu schaffen, die sich dann selbsttätig nachstellt, wenn die Zeigerstellung nicht mit der tatsächlichen Zeit übereinstimmt.The object of the invention is to provide a generic watch that adjusts itself automatically when the position of the hands does not match the actual time.
Die Aufgabe wird gelöst durch den Hauptanspruch.The task is solved by the main claim.
Erfindungsgemäß ist eine funkgesteuerte Uhr vorgesehen, die einerseits aus dem codierten Funksignal die Zeitinformation bezieht und entsprechend den Impulsen die Zeiger einer Uhr weiterstellt. Dazu wird über das Empfangsteil, das die Funkimpulse aufnimmt, eine Quarzuhr angesteuert, die bei Empfang des Funksignals entsprechend dem Funksignal Fortschaltimpulse an eine Steuereinheit abgibt, die die Zeiger weiterstellt.According to the invention, a radio-controlled watch is provided which, on the one hand, obtains the time information from the coded radio signal and, according to the pulses, passes on the hands of a watch. For this purpose, a quartz clock is controlled via the receiving part, which receives the radio impulses. When the radio signal is received, the quartz clock transmits indexing pulses to a control unit, which passes the pointers on.
Fällt nun das Funksignal aus, sei es aufgrund ungünstiger Empfangsbedingungen oder aufgrund eines Senderausfalles, übernimmt die Quarzuhr freilaufend das Fortschalten der Zeiger, um bei erneutem Empfang des Funksignales wieder auf die Funksignalsteuerung umzuschalten.If the radio signal fails, be it due to unfavorable reception conditions or a transmitter failure, the quartz clock takes over the switching of the hands in order to switch back to the radio signal control when the radio signal is received again.
Weiterhin ist dem Stunden- und Minutenzeiger, ggf. auch dem Sekundenzeiger, ein Sensor zugeordnet, wobei die Sensoren stationär im Ziffernblatt vorgesehen sind. Bei Überlaufen des Sensors durch den Zeiger wird die Zeigerstellung erfaßt. Die Sensoren können vorzugsweise Reed-Relais sein, die auf kleine Magnete, die in den Zeiger integriert sind, ansprechen. Selbstverständlich sind auch andere Sensoren, beispielsweise auf optischer Basis, denkbar.Furthermore, a sensor is assigned to the hour and minute hands, and possibly also to the second hand, the sensors being provided stationary on the dial. When the pointer overflows the pointer position is detected. The sensors can preferably be reed relays that respond to small magnets that are integrated in the pointer. Of course, other sensors, for example on an optical basis, are also conceivable.
Eine Vergleichseinrichtung kontrolliert bei jedem Überlaufen der Sensoren durch die Zeiger, ob die Zeigerstellung mit der Quarzuhrzeit übereinstimmt.A comparison device checks each time the sensors overflow through the hands to determine whether the position of the hands matches the quartz time.
Die Unteransprüche kennzeichnen eine bevorzugte Ausführungsform der Uhr. Insbesondere ist in Unteranspruch 4 ein Aufbau beschrieben, bei dem der Zeigerteil der Uhr mit zugehöriger Quarzuhr in einer mobilen Einheit untergebracht wird, während der Funkempfangsteil in einer stationären Einheit vorgesehen ist. Die stationäre Einheit besteht aus einer üblichen Funkuhr, die auch als Schaltuhr benutzt werden kann, indem die manuell eingebbaren Schaltzeiten in einem nicht flüchtigen Speicher elektronisch gespeichert werden. Hauptaufgabe der stationären Einheit jedoch ist das Aussenden der aktuellen Zeitinformation durch Funk, Infrarot oder Ultraschall. In der mobilen Einheit, die zweckmäßigerweise aus einer Armbanduhr bestehen kann, ist die freilaufende Quarzuhr untergebracht, die die Zeiger mit den entsprechenden Sensoren ansteuert. Außerdem enthält die mobile Einheit einen geeigneten Empfänger für die Signale von der stationären Einheit. Befindet sich die mobile Einheit, z. B. die Armbanduhr, innerhalb der Reichweite der Sendesignale, so erfolgt die Übergabe der aktuellen Zeit durch die Information von der stationären Einheit zur mobilen Einheit. Dadurch kann die mobile Einheit mit Quarzuhr und Zeigeranzeige ggf. wieder abgeglichen werden mit dem Funksignal, das die codierte Zeitinformation enthält.The sub-claims characterize a preferred embodiment of the watch. In particular, a structure is described in subclaim 4, in which the pointer part of the clock with associated quartz clock is accommodated in a mobile unit, while the radio receiving part is accommodated in a stationary one Unit is provided. The stationary unit consists of a conventional radio clock, which can also be used as a timer by electronically storing the manually entered switching times in a non-volatile memory. However, the main task of the stationary unit is to send the current time information by radio, infrared or ultrasound. The free-running quartz watch, which controls the hands with the corresponding sensors, is accommodated in the mobile unit, which can expediently consist of a wristwatch. The mobile unit also contains a suitable receiver for the signals from the stationary unit. Is the mobile unit, e.g. B. the wristwatch, within the range of the transmission signals, the current time is passed through the information from the stationary unit to the mobile unit. As a result, the mobile unit with quartz clock and pointer display can, if necessary, be compared again with the radio signal which contains the coded time information.
Die Verfahrensansprüche beschreiben ein Verfahren zum Betreiben der erfindungsgemäßen Uhr.The method claims describe a method for operating the clock according to the invention.
Insbesondere ist vorgesehen, daß einerseits beim Überlaufen der Sensoren durch die Zeiger überprüft wird, ob die Zeigerstellung mit der Zeit, wie sie in der Quarzuhr enthalten ist, übereinstimmt. Andererseits wird dann, wenn die Quarzuhr die Zeitangabe enthält, bei der sich die Zeiger in der vorbestimmten Stellung finden müßten, überprüft, ob das Sensorsignal für die vorbestimmte Zeigerstellung vorliegt.In particular, it is provided that, on the one hand, when the sensors overflow the sensors, it is checked whether the pointer position coincides with the time as contained in the quartz clock. On the other hand, if the quartz clock contains the time at which the hands should be in the predetermined position, it is checked whether the sensor signal for the predetermined pointer position is present.
In dem einen wie in dem anderen Fall wird, bei Abweichung von Quarzuhr und Zeigerstellung, die Uhr erneut gestellt. Ebenso wird die Uhr sofort gestellt beim Einschalten oder auch nach einem Stromausfall. Die Information über die Zeigerstellung wird dadurch gewonnen, daß solange Minutenimpulse, bei Vorhandensein eines Sekundenzeigers mit entsprechendem Sensor Sekundenimpulse, mit erhöhter Frequenz erzeugt werden, bis die Sensoren der Zeiger die vorbestimmte Zeigerstellung erfaßt haben und so eine definierte Startposition erreicht ist. Die Verwendung von Reed-Relais hat dabei den Vorteil, daß die Zeigerstellung ohne Energieverbrauch abgefragt werden kann, außerdem können Miniaturschalter und Magnete sehr klein und kompakt an Zeiger und Ziffernblatt angebracht werden. Die Zuverlässigkeit und der der Zeigung entgegengesetzte Widerstand sind außerdem günstiger als bei der Verwendung von rein mechanischen Schaltelementen.In one case as in the other, if the quartz clock and the hand position differ, the clock is set again. The clock is also set immediately when switched on or even after a power failure. The information about the pointer position is obtained in that minute pulses, with the presence of a second hand with the corresponding sensor, second pulses, are generated at an increased frequency until the sensors of the hands have detected the predetermined pointer position and a defined starting position is reached. The use of reed relays has the advantage that the pointer position can be queried without energy consumption, and miniature switches and magnets can also be attached very small and compact to the pointer and dial. The reliability and resistance to the pointing are also cheaper than when using purely mechanical switching elements.
Zum Einstellen der korrekten Zeit, ausgehende von der vorbestimmten Zeigerstellung, werden nun weiterhin schnelle Minutenimpulse erzeugt, bis die Zeigerstellung mit der freilaufenden, elektronischen Quarzuhr, die von der Funkuhr synchronisiert wird, übereinstimmt. Durch die Wahl der Frequenz für die Stellimpulse wird gewährleistet, daß die Zeigeruhr spätestens nach 1,5 Minuten synchronisiert ist. Ein-manuelles Stellen der Uhr ist nie nötig. Im anschließenden Normalbetrieb werden die von der Funkuhr erzeugten Minutenfortschaltimpulse, bei Sekundenzeiger ggf. Sekundenfortschaltimpulse, sowohl der Zeigeruhr als auch der freilaufenden Quarzuhr zugeführt. Dabei wird zweimal am Tag bei Überfahren der Synchronisationsmarke die Zeigerstellung kontrolliert. Hat die Zeiger- uhr diese Marke erreicht und die Quarzuhr steht nicht auf der zugehörigen Zeit, oder die freilaufende Uhr läuft über die Synchronisationszeit, ohne daß durch die Zeiger die Synchronisationschalter geschlossen werden, so erfolgt erneut die Erzeugung schneller Minutenimpulse, bis beide Uhren wieder übereinstimmen.In order to set the correct time, starting from the predetermined hand position, rapid minute pulses continue to be generated until the hand position matches the free-running electronic quartz clock, which is synchronized by the radio clock. The choice of frequency for the actuating impulses ensures that the hand clock is synchronized after 1.5 minutes at the latest. Manual setting of the clock is never necessary. In the subsequent normal operation, the minute advance pulses generated by the radio clock, and in the case of second hands, if necessary, second advance pulses, are fed to both the pointer clock and the free-running quartz clock. The pointer position is checked twice a day when the synchronization mark is passed. If the hand clock has reached this mark and the quartz clock is not at the appropriate time, or the free-running clock runs over the synchronization time without the synchronization switch being closed by the hands, the minute pulses are generated again until both clocks match again .
Erfindungsgemäß steuert also die Funkuhr die Quarzuhr und die Quarzuhr die Zeiger. Die Übereinstimmung von Quarzuhr und Zeigerstellung wird zweimal täglich überwacht.According to the invention, the radio clock controls the quartz clock and the quartz clock controls the hands. The coincidence of the quartz clock and the position of the hands is monitored twice a day.
Muß nun, nach einer Freilaufperiode, die Quarzuhrzeit aufgrund einer Abweichung von der Funkuhrzeit, abgeändert werden, wird durch die Summen, die den Zeigern zugeordnet sind, diese Abweichung erfaßt und die Zeiger neu gestellt.If, after a free-running period, the quartz time has to be changed due to a deviation from the radio clock time, this difference is detected by the sums assigned to the hands and the hands are reset.
Die Figur zeigt ein Blockschaltbild.The figure shows a block diagram.
Wie in dem Blockschaltbild dargestellt, ist eine Empfangseinheit vorgesehen, die von einer Antenne das codierte Funksignal empfängt. Die Empfangseinheit steuert eine sich anschließende Recheneinheit an, in der das Funksignal ausgewertet wird und die Zeitinformation aus der Codierung des Funksignales herausgefiltert wird. Die Recheneinheit liefert dieses aufbereitete Zeitsignal einer Vergleichseinheit zu. Diese Vergleichseinheit mißt, ob überhaupt ein Funksignal kommt. Bei Ausbleiben des Funksignales schaltet die Vergleichseinheit. auf eine freilaufende Quarzuhr um, die ebenfalls ihr Signal der Vergleichseinheit zuführt. Liegt ein Funksignal an, wird das Funksignal ständig z. B. im Minutenabstand mit dem Quarzuhrsignal verglichen, und bei Abweichungen voneinander wird das Quarzuhrsignal mit dem Funksignal synchronisiert.As shown in the block diagram, a receiving unit is provided which receives the coded radio signal from an antenna. The receiving unit controls a subsequent computing unit in which the radio signal is evaluated and the time information is filtered out of the coding of the radio signal. The processing unit supplies this prepared time signal to a comparison unit. This comparison unit measures whether there is a radio signal at all. If there is no radio signal, the comparison unit switches. to a free-running quartz clock, which also feeds its signal to the comparison unit. Is there a radio signal, the radio signal is constantly z. B. compared in minutes with the quartz clock signal, and in the event of deviations from one another, the quartz clock signal is synchronized with the radio signal.
Weiterhin steuert die Vergleichseinheit eine Steuereinheit an, die die Fortschaltimpulse, bei Sekundenzeiger pro Sekunde ein Impuls, bei Minutenzeiger pro Minute ein Impuls, an die Zeiger weiterleitet. Bei Anliegen eines Zeitsignals aus der Recheneinheit wird über die Vergleichseinheit dieses Signal weitergegeben, fehlt jedoch das Signal von der Recheneinheit, wird das Quarzuhrsignal der Steuereinheit zugeführt.Furthermore, the comparison unit controls a control unit which forwards the indexing pulses, one pulse per second at seconds, one pulse at minute hands per minute, to the pointers. When a time signal from the computing unit is present, this signal is passed on via the comparison unit, but if the signal from the computing unit is missing, the quartz clock signal is fed to the control unit.
Von der Uhr wird eine Abfrage angesteuert, die in den ortsfesten Sensoren besteht, die alle zwölf Stunden die vorbestimmte Zeigerstellung der Uhr abfragen. Die Abfrage wird einer Stelleinheit zugeführt, die außerdem die Quarzuhrzeit erhält. Stimmt das Ergebnis der Abfrage nicht mit der Quarzuhrzeit überein, steuert die Stelleinheit mit erhöhter Frequenz wiederum die Steuereinheit an, so daß schnelle Impulse die Uhr vorverstellen, bis die Uhr, ausgehend von der vorbestimmten Zeigerstellung, wieder die aus der Vergleichseinheit bezogene Zeit anzeigt.The watch activates a query which consists of the fixed sensors which poll the predefined pointer position of the watch every twelve hours. The query is fed to an actuating unit, which also receives the quartz time. If the result of the query does not match the quartz time, the control unit in turn controls the control unit with increased frequency, so that fast pulses advance the clock until the clock, starting from the predetermined hand position, again indicates the time obtained from the comparison unit.
Claims (10)
gekennzeichnet durch
marked by
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3446724 | 1984-12-21 | ||
DE19843446724 DE3446724A1 (en) | 1984-12-21 | 1984-12-21 | RADIO CONTROLLED CLOCK |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0185160A2 true EP0185160A2 (en) | 1986-06-25 |
EP0185160A3 EP0185160A3 (en) | 1988-03-16 |
Family
ID=6253443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85112962A Withdrawn EP0185160A3 (en) | 1984-12-21 | 1985-10-12 | Radio-controlled time piece |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0185160A3 (en) |
JP (1) | JPS61155789A (en) |
DE (1) | DE3446724A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0308880A2 (en) * | 1987-09-23 | 1989-03-29 | Junghans Uhren Gmbh | Autonomous radio clock |
US4993003A (en) * | 1988-08-17 | 1991-02-12 | Electronic-Werke Deutschland Gmbh | Apparatus for updating time-of-day information in a signal |
EP0936510A1 (en) * | 1998-02-13 | 1999-08-18 | Marie Paul Dolle | Clock used as an advertising device or as a support of informations |
SG90260A1 (en) * | 2000-08-24 | 2002-07-23 | Asulab Sa | Method for telephone communication between a portable object with horological functions and telephone and a dedicated server, and portable object for implementation of the same |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3625989A1 (en) * | 1986-07-31 | 1988-02-04 | Junghans Uhren Gmbh | Timepiece |
JPH02101638U (en) * | 1989-02-01 | 1990-08-13 | ||
DE9302090U1 (en) * | 1993-02-13 | 1993-04-01 | Ploner, Klaus-Juergen, Dr., 4505 Bad Iburg, De | |
DE102004015222A1 (en) * | 2004-03-24 | 2005-10-27 | Eas Surveillance Gmbh | Event recorder, especially a vehicle mounted traffic accident recorder has a recording device such as a camera and a clock module whose time can only be set via a radio time signal and synchronization unit |
EP2080988B1 (en) * | 2008-01-18 | 2012-01-04 | Siemens Aktiengesellschaft | Measurement system and device for surveillance of a measuring system |
Citations (6)
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DE2807214A1 (en) * | 1977-02-21 | 1978-08-24 | Centre Electron Horloger | TIMING DEVICE |
DE2715096A1 (en) * | 1977-04-04 | 1978-10-12 | Wolfgang Prof Dr Ing Hilberg | Automatically regulated quartz clock - is synchronised with received time signal via slave clock periodically used to correct time registers |
US4204398A (en) * | 1977-09-16 | 1980-05-27 | Lemelson Jerome H | Method and means for automatically setting timepieces in a time zone |
FR2480957A1 (en) * | 1980-04-18 | 1981-10-23 | Derot Marie Therese | METHOD AND DEVICE FOR SETTING THE TIME OF A MOTOR CLOCK AND OF THE RECEIVING CLOCKS THAT IT CONTROLS |
EP0082821A1 (en) * | 1981-12-23 | 1983-06-29 | Eta SA Fabriques d'Ebauches | Electronic watch provided with detection means for the passage across a reference position |
WO1984001630A1 (en) * | 1982-10-07 | 1984-04-26 | Richard John Walters | A time display system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5127968A (en) * | 1974-09-03 | 1976-03-09 | Suwa Seikosha Kk | Denshidokei no jidoshuseihoho |
DE3317463C2 (en) * | 1983-05-13 | 1985-05-23 | Forschungsgesellschaft für Uhren- und Feingeräte -Technik e.V., 7000 Stuttgart | Contactless pointer position detection device |
-
1984
- 1984-12-21 DE DE19843446724 patent/DE3446724A1/en not_active Withdrawn
-
1985
- 1985-10-12 EP EP85112962A patent/EP0185160A3/en not_active Withdrawn
- 1985-11-26 JP JP60267037A patent/JPS61155789A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2807214A1 (en) * | 1977-02-21 | 1978-08-24 | Centre Electron Horloger | TIMING DEVICE |
DE2715096A1 (en) * | 1977-04-04 | 1978-10-12 | Wolfgang Prof Dr Ing Hilberg | Automatically regulated quartz clock - is synchronised with received time signal via slave clock periodically used to correct time registers |
US4204398A (en) * | 1977-09-16 | 1980-05-27 | Lemelson Jerome H | Method and means for automatically setting timepieces in a time zone |
FR2480957A1 (en) * | 1980-04-18 | 1981-10-23 | Derot Marie Therese | METHOD AND DEVICE FOR SETTING THE TIME OF A MOTOR CLOCK AND OF THE RECEIVING CLOCKS THAT IT CONTROLS |
EP0082821A1 (en) * | 1981-12-23 | 1983-06-29 | Eta SA Fabriques d'Ebauches | Electronic watch provided with detection means for the passage across a reference position |
WO1984001630A1 (en) * | 1982-10-07 | 1984-04-26 | Richard John Walters | A time display system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0308880A2 (en) * | 1987-09-23 | 1989-03-29 | Junghans Uhren Gmbh | Autonomous radio clock |
EP0308880A3 (en) * | 1987-09-23 | 1991-02-06 | Junghans Uhren Gmbh | Autonomous radio clock |
US4993003A (en) * | 1988-08-17 | 1991-02-12 | Electronic-Werke Deutschland Gmbh | Apparatus for updating time-of-day information in a signal |
EP0936510A1 (en) * | 1998-02-13 | 1999-08-18 | Marie Paul Dolle | Clock used as an advertising device or as a support of informations |
SG90260A1 (en) * | 2000-08-24 | 2002-07-23 | Asulab Sa | Method for telephone communication between a portable object with horological functions and telephone and a dedicated server, and portable object for implementation of the same |
Also Published As
Publication number | Publication date |
---|---|
DE3446724A1 (en) | 1986-07-10 |
EP0185160A3 (en) | 1988-03-16 |
JPS61155789A (en) | 1986-07-15 |
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