EP0042913A2 - Procédé pour la remise à l'heure d'une horloge commandée par radio à l'aide de signaux horaires - Google Patents

Procédé pour la remise à l'heure d'une horloge commandée par radio à l'aide de signaux horaires Download PDF

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Publication number
EP0042913A2
EP0042913A2 EP81102235A EP81102235A EP0042913A2 EP 0042913 A2 EP0042913 A2 EP 0042913A2 EP 81102235 A EP81102235 A EP 81102235A EP 81102235 A EP81102235 A EP 81102235A EP 0042913 A2 EP0042913 A2 EP 0042913A2
Authority
EP
European Patent Office
Prior art keywords
time
clock
time signal
radio
transmitter
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
EP81102235A
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German (de)
English (en)
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EP0042913B1 (fr
EP0042913A3 (en
Inventor
Werner Dipl.-Ing. Schulz
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.)
SCHULZ, WERNER, DIPL.-ING.
Original Assignee
Schulz Werner Dipl-Ing
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
Application filed by Schulz Werner Dipl-Ing filed Critical Schulz Werner Dipl-Ing
Priority to AT81102235T priority Critical patent/ATE22359T1/de
Priority to CA000379059A priority patent/CA1167649A/fr
Publication of EP0042913A2 publication Critical patent/EP0042913A2/fr
Publication of EP0042913A3 publication Critical patent/EP0042913A3/de
Application granted granted Critical
Publication of EP0042913B1 publication Critical patent/EP0042913B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • G04R20/20—Setting the time according to the time information carried or implied by the radio signal the radio signal being an AM/FM standard signal, e.g. RDS
    • G04R20/22—Tuning or receiving; Circuits therefor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04R—RADIO-CONTROLLED TIME-PIECES
    • G04R40/00—Correcting the clock frequency
    • G04R40/06—Correcting the clock frequency by computing the time value implied by the radio signal

Definitions

  • An autonomous radio clock is to be understood here as an independently operating radio clock that is independent of manual setting processes.
  • a time signal is to be understood here as part of a modulation oscillation which has the task of transmitting the time reference supplied by a transmitter wirelessly or by wire (see FIG. 9).
  • the invention describes a method for a digital clock controlled by time signals or by means of a stepping motor quasi-analogue clock, which - except during the first installation or after a service case - never needs to be set, which - even after a long time signal failure - shows no discernible gear deviation and is extremely fail-safe and works in an energy-saving manner.
  • the methods of known radio clocks can be divided into three categories: 1. synchronization, 2. triggering, 3. demodulation and direct display of coded time information. There are numerous variations and circuits for all of these methods, including the necessary power reserve, with a wealth of publications.
  • the first category includes analog or digital clocks, the internal time base of which is corrected continuously or only occasionally by means of frequency or phase comparison to a received reference frequency, e.g. B. Tetzner, Karl: “Radio-synchronized clocks” in the Funkschau 1976, issue 15, page 623 (Franzis-Verlag Kunststoff, Federal Republic of Germany) or by Marti, Raymond: “Automatic and continuous time setting device of a clock” in the publication 1773406 from 10. 5.1968 (German Patent Office Kunststoff).
  • time base of the clock is different from the Carrier frequency of a transmitter (or several transmitters) is derived.
  • a switch to a second time base is then required (power reserve), e.g. B. from Schreiber, Herrmann: “Controlling a utility watch by Zeit SchweizerHender” in Funkschau 1977, Issue 2, page 96 and Issue 3, page 137 (Franzis-Verlag Kunststoff, Federal Republic of Germany).
  • the second category includes digital clocks that run freely with a greater or lesser degree of accuracy and are set to the target time at defined times (usually midnight) by means of a time signal, e.g. B.
  • the third category also includes receivers, e.g. B. televisions, which are primarily not to be called radio clocks, but represent the correct time after pressing a button, such as. B. developed by AEG-Telefunken and in the magazine elektrotechnik 1972, number 6, page 29 (Vogel Verlag KG Würzburg, Federal Republic of Germany) under the title: "In future only atomic time”.
  • the enumerated methods have various advantages and disadvantages, of which only the disadvantages to be highlighted are listed:
  • the 3rd category it must be possible to receive a time transmitter with sufficient field strength, which requires relatively complex and expensive receiving devices; the decoder circuits are relatively complex; it is not possible to set up quasi-analogue clocks.
  • the above-described time measurement method also has the disadvantage that the clock deviation varies Correction has reached a relatively large value.
  • the invention now defines a 4th category of radio-controlled clocks, which represents a combination of a time measurement method for the clock deviation of the clock with an automatic setting process, which is typical of radio-controlled clocks, the result having to be an autonomous mode of operation.
  • the rate deviation of the watch is measured by size and direction with the aid of a time signal within defined, constant time segments, stored and then used to correct the rate deviation and the oscillator frequency of the radio clock.
  • the switching on of the time signal receiver, the setting of the catch range for the time signal and the decoding of the time signal are also carried out with this oscillator frequency.
  • the capture range must be chosen so large that the time signal is always within these limits under the most unfavorable circumstances.
  • the master clock can be viewed as an amplifier station for the time signal, which supplies all slave clocks with a prepared time signal. Assuming a uniform transmitter time signal that is broadcast by all radio / television stations / time transmitters / master clocks, the time signal receiver can automatically tune to the transmitter with the greatest field strength and select another transmitter after a repeated failure of the time signal. It is also possible to move the time signal receiver to commercially available radio / television receivers, so that the existing reception equipment device for the radio clock is also used ( Figure 6a, 6b).
  • the decoder circuits are relatively simple and can be produced in very large numbers. 10. It is possible to move the time signal receiver to commercially available radio and television sets, which means that the radio receiver can use the existing reception device for these devices ( Figure 6a, 6b), and the radio clock is even cheaper to manufacture, 11. The time signal receiver is cheaper to manufacture than one for coded time information, since 11. 1 with larger reception field strengths can be expected (latching of the time signal receiver onto the transmitter with the greatest field strength), 11. 2 the decoder circuit is simpler, 11. 3 larger demodulation distortions are permissible, 11. 4 the power supply can be smaller.
  • FIG. 1 shows the chronological order of the most important signal lines of the block diagram of FIG. 2. These signal lines are provided with circled reference numbers in order to better understand FIG. 2. This block diagram only serves to describe the function of the method, but is replaced in practice by a computer program.
  • the rate deviation of the clock (49) is determined by the frequency constancy of the oscillator (30). In order to be able to measure this, the comparison must be possible with a time interval that is considered “correct”. Since there is no absolutely correct time scale, one has to use the "official time” for clock applications, which is currently being broadcast by radio / television stations / time transmitters with inconsistent transmitter time signals. In the following, however, it should be assumed that a uniform, automatically evaluable transmitter time signal is broadcast by all radio and television stations so that the method described here comes into its own.
  • the watch is started using the switch (f), which switches on the automatic start (48) and the time signal receiver (45). If the clock (49) is already running, it is stopped using the stop button (e). With quasi-analogue clocks, the movement is set to the reference time or stopped at this point.
  • the next time signal (3), (5) reaches the clock (49) via the automatic start (48) and sets all registers there - according to the specified time reference - to the setpoint and starts the time counter.
  • the clock (49) now runs automatically with the accuracy of its quartz oscillator (30), that is to say without influencing the transmitter, until the following time signal (3), (5) arrives.
  • the idle state is established via the reset line of the automatic starter (48): the flip-flop (47) is reset via the OR gate (41), so that the time signal output from the AND gate ( 46) is locked;
  • the clock counter (40) is set to 0 via the OR gate (36) and the flip-flop (38) is brought into the rest position, so that the clock pulse 1 cannot reach the clock counter (40) via the AND gate (39);
  • the switch-on stage (43), (44) of the time signal receiver (45) is brought into the “off” position via the OR gate (35); continue to grow Register in the setting logic (31) is set to the setpoint and the contents of the sign memory (23) and difference time memory (26) are set to 0.
  • time signal receiver (45) and the automatic start (48) are switched off again with the switch (f), which completes the starting process.
  • a time-preselected signal (1) from the clock (49) switches the time signal receiver (45), e.g. B. after 23 hours / 59 minutes, via the switch-on stage (43), (44) and opens the AND gate (39) with the help of the flip-flop (38), so that the time clock 1 can get into the clock counter (40).
  • the next time signal (2) is supplied by the clock counter (40), releases the time signal output of the time signal receiver (45) via the flip-flop (47) and the AND gate (46), provides the register in the differential timer (24) and in the priority logic (21) and releases via the AND gates (22), (25) the transfer of the information from the priority logic (21) and difference timer (24) to the sign memory (23) and difference time memory (26).
  • the priority logic (21) now expects the time signal (3), (5) or the periodic time signal (4) from the clock counter (40).
  • the differential timer (24) is started by the priority logic (21), counting pulses of the clock cycle 2 being transmitted by the clock counter (40) to the differential timer (24) and to the correction stage ( 27), count and determine the resolution of the time measurement for the clock deviation of the watch (49).
  • the difference time measurement is ended by the last arriving signal (4) or (5) via the path of the priority logic (21).
  • the next signal output (8) of the clock counter (40) switches off the time signal receiver (45) via OR gate (35), flip-flop (43), OR gate (44) and transmits the measured values with the same signal (8) Priority logic (21) and difference timer (24) via the AND gates (22), (25) in the sign memory (23) and difference time memory (26). After this data is stable at the correction stage (27) and has been evaluated, the start of correction can be initiated from the clock counter (40) via the signal line (9).
  • the display is corrected with the aid of pulse level 1 (29), pulse level 2 (33) and the OR gate (37) in such a way that the values of the gear deviation recorded in the sign memory (23) and difference time memory (26) are canceled will.
  • the pulse stage 1 (29) transforms the clock cycle 1 (FIG. 3a) of the oscillator (30) into a square wave with the pulse ratio 4 (FIG. 3b). This square wave normally reaches the clock (49) via the OR gate (37) and the interference suppression filter (42). If the clock (49) went too fast according to the measurement result, this time cycle is suppressed by the correction stage (27) via the OR gate (28) in pulse stage 1 (29) until the measured gear deviation is balanced again.
  • the correction stage (27) arithmetically acts in this oscillator branch against the rate deviation of the clock (49), so that a closed control loop is created.
  • the completion of all correction processes is indicated by the correction stage (27) with the signal (10), which causes the clock counter (40) and the flip-flop (38) to be reset via the OR gate (36).
  • the counter in the differential timer (24) reaches its maximum value and sets the flip-flop (34) with its output signal (6).
  • the carry pulse (8) is ineffective, so that the subsequent display correction is carried out with the values last stored in the sign memory (23) and difference time memory (26).
  • the oscillator correction is prevented from the flip-flop (34), so the control loop is interrupted so that the high power reserve is retained.
  • the signal line "summer-winter time" from the clock (49) to the Stellogik (31) requires that it is a computer-controlled date clock.
  • H potential corresponds to z.
  • the potential change on this signal line causes the targeted adjustment process by one hour each time using the previously described display correction method. Since this setting process takes a relatively long time and the information on the clock display is incorrect during this time, the display resolution should in any case be one second so that it can be visually recognized that the clock is running too fast or the clock is at a standstill. This signaling is sufficient for the uninitiated, even without operating instructions, to disregard the display.
  • the catch range will still be within the permitted absolute time of the time signal (3), (5) even after repeated faults.
  • the time signal (3) is expected in the first half of the catch range, with a glitch only having a short effective period.
  • the catch range changes with the periodic time signal (4) in relation to the time signal (3), (5), while the time signal (3), (5) itself is to be regarded as stationary.
  • FIG. 4 shows the detailed block diagram of the time signal receiver (45).
  • the radio receiver (61) is simply constructed, as described under advantages.
  • the transmitter tuning is voltage controlled.
  • the receiver microcomputer (68) automatically adjusts the radio receiver (61) to the strongest transmitter after being switched on by the OR gate (44) and the power supply (64). This happens e.g. B. by evaluating the control voltage, which is supplied to the receiver microcomputer (68) via the amplifier (62) and via the A / D converter (66).
  • the computer program first travels the entire reception frequency range with the aid of the tuning voltage converted via the D / A converter (65) and stores the associated control voltage values. Then he snaps the radio receiver (61) at the transmitter with the greatest field strength in order to increase the probability of undisturbed reception.
  • the transmitter time signal is broadcast by all transmitters at almost every full hour, there is also the possibility in time limit areas to receive a neighboring transmitter that is outside the time limit, which is not the case with coded signals is possible.
  • the receiver microcomputer (68) can easily register a repeated time signal failure since it also has the task of performing time signal decoding. In this case, he looks for the next strongest station.
  • the radio receiver (61) is to be used as a radio clock at the same time, it is advisable to switch to manual mode using the switch (g).
  • the currently set transmitter is then also used as a time signal transmitter.
  • the automatic start (48) must be locked via the AND gate (69) and the receiver microcomputer (68) must be switched to another program loop.
  • the simplest and most inexpensive concept of a clock system using this method is obtained with a master clock according to FIG. 5 and secondary clocks with a quasi-analog display with a stepping motor (82).
  • the slave clocks are controlled via only one signal line, which leads the second clock with correction to each slave clock.
  • the installation of the slave clocks is therefore limited to a double wire - without power supply - so that this method z. B. in potentially explosive systems.
  • a clock system according to this method is similarly simple in accordance with FIG. 7.
  • the master clock is again designed according to FIG. 5, the slave clocks likewise, but the latter lacks the time signal receiver (45).
  • the slave clocks are now controlled using the time signal.
  • the slave clocks work more interference-free, do not have to be set after a master clock failure (utilization of the high power reserve) and can also be equipped with a digital display (81).
  • Slave clocks are often installed in hard-to-reach places and are exposed to extreme environmental influences, so service should be easy, especially with this type of clock. Since the method according to the invention is a computer-controlled clock anyway, it is possible to provide outputs for data exchange (display value) via standardized interfaces between master clocks and slave clocks without any particular effort. Such an example is shown in FIG. 8. The slave clocks are controlled again with the aid of the time signal, that is to say interference-free with a high power reserve, but now there is the additional possibility of cyclically querying all slave clocks to make one work incorrectly Display slave clock in the central monitoring room. After the service has been completed, a targeted setting process is possible from the skin watch.
  • the selected duration of a total of three seconds represents a favorable compromise between unnecessarily long (thus prone to failure) and too short (hence insufficient selection from any Nf signal). It should also be emphasized that all relevant times with binary dividers of a usual "clock frequency" , e.g. B. 2 15 Hz or 2 22 Hz can be derived, for which there are enough resonators. This advantage relates to both the time signal encoder and decoder circuit. The equally selected time periods are also suitable for computer evaluation, since program loops or subroutines can be used.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
EP81102235A 1980-06-19 1981-03-25 Procédé pour la remise à l'heure d'une horloge commandée par radio à l'aide de signaux horaires Expired EP0042913B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT81102235T ATE22359T1 (de) 1980-06-19 1981-03-25 Verfahren zum automatischen stellen autonomer funkuhren mit hilfe eines zeitzeichens.
CA000379059A CA1167649A (fr) 1980-06-19 1981-06-04 Methode de reglage automatique d'une radio-horloge autonome au moyen d'un repere temporel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3022949 1980-06-19
DE3022949A DE3022949C2 (de) 1980-06-19 1980-06-19 Verfahren zur automatischen Korrektur der Gangabweichung einer Uhr

Publications (3)

Publication Number Publication Date
EP0042913A2 true EP0042913A2 (fr) 1982-01-06
EP0042913A3 EP0042913A3 (en) 1982-01-20
EP0042913B1 EP0042913B1 (fr) 1986-09-17

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EP81102235A Expired EP0042913B1 (fr) 1980-06-19 1981-03-25 Procédé pour la remise à l'heure d'une horloge commandée par radio à l'aide de signaux horaires

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US (1) US4440501A (fr)
EP (1) EP0042913B1 (fr)
JP (1) JPS5735780A (fr)
DE (2) DE3022949C2 (fr)

Cited By (9)

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EP0180155A2 (fr) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Montre commandée par radio
EP0355567A2 (fr) * 1988-08-17 1990-02-28 Deutsche Thomson-Brandt GmbH Dispositif ainsi que procédé de correction de la date et de l'heure
EP0427515A2 (fr) * 1989-11-08 1991-05-15 Seiko Epson Corporation Pièce d'horlogerie électronique corrigée automatiquement
DE4104767A1 (de) * 1990-05-22 1992-01-09 Samsung Electronics Co Ltd Schaltung zur automatischen zeiteinstellung
US7317905B2 (en) 2004-01-29 2008-01-08 Atmel Germany Gmbh Radio-controlled clock and method for gaining time information
US7333467B2 (en) 2003-12-08 2008-02-19 Atmel Germany Gmbh Receiver circuit and method using selectively variable amplification for receiving time signals from different transmitters
US7369628B2 (en) 2004-01-29 2008-05-06 Atmel Germany Gmbh Method for gaining time information and receiver for implementing the method
US7486657B2 (en) 2003-07-31 2009-02-03 Atmel Germany Gmbh Radio controlled clock and method for retrieving time information from time signals
US8160184B2 (en) 2005-11-26 2012-04-17 Atmel Corporation Radio clock and method for extracting time information

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US4582434A (en) * 1984-04-23 1986-04-15 Heath Company Time corrected, continuously updated clock
US5150954A (en) * 1984-12-05 1992-09-29 Seiko Corporation Pager watch system utilizing time slot communication
US4768178A (en) * 1987-02-24 1988-08-30 Precision Standard Time, Inc. High precision radio signal controlled continuously updated digital clock
US4823328A (en) * 1987-08-27 1989-04-18 Conklin Charles C Radio signal controlled digital clock
JPH01152776U (fr) * 1988-04-15 1989-10-20
DE3822412A1 (de) * 1988-07-01 1990-01-04 Schulz Werner Dipl Ing Fh Verfahren zum automatischen stellen autonomer funkuhren
JPH03218494A (ja) * 1989-11-08 1991-09-26 Seiko Epson Corp 時間精度自動修正時計
US5265070A (en) * 1989-11-08 1993-11-23 Seiko Epson Corporation Receiving device with timekeeping function
JPH05507162A (ja) * 1990-01-29 1993-10-14 アメリカ合衆国 正確な時間および／または周波数を提供する装置と方法
US5128909A (en) * 1990-08-17 1992-07-07 Ball Corporation Advanced clock measurement system
JP3000245B2 (ja) * 1992-03-04 2000-01-17 セイコーインスツルメンツ株式会社 電波規正型電子時計
JPH0744719B2 (ja) * 1993-03-29 1995-05-15 日本電気株式会社 無線選択呼出受信機
DE4403124C2 (de) * 1994-02-02 1997-02-13 Telefunken Microelectron Verfahren zum Betrieb einer Funkuhr
DE4423366C1 (de) * 1994-07-04 1995-10-19 Grundig Emv Verfahren und Anordnung zum Betreiben einer Software-Uhr in einem Gerät der Unterhaltungselektronik
JP4264494B2 (ja) * 2003-05-15 2009-05-20 Ｏｋｉセミコンダクタ株式会社 標準電波受信時刻装置
JP4283622B2 (ja) * 2003-09-10 2009-06-24 セイコープレシジョン株式会社 電波修正時計
CN1627213A (zh) * 2003-11-28 2005-06-15 Atmel德国有限公司 由发送的时间信息信号获得时间信息的方法及无线电钟表
DE10357201A1 (de) * 2003-12-08 2005-07-07 Atmel Germany Gmbh Funkuhr
DE10361593A1 (de) * 2003-12-30 2005-07-28 Atmel Germany Gmbh Verfahren zur Bestimmung des Sekundenbeginns aus einem gesendeten Zeitzeichensignal
DE102004004416A1 (de) * 2004-01-29 2005-08-18 Atmel Germany Gmbh Verfahren zur Ermittlung der Signalgüte eines gesendeten Zeitzeichensignals
DE102004005340A1 (de) * 2004-02-04 2005-09-01 Atmel Germany Gmbh Verfahren zur Gewinnung von Zeitinformationen, Empfängerschaltung und Funkuhr
CN101651504A (zh) * 2008-08-15 2010-02-17 鸿富锦精密工业（深圳）有限公司 电子装置及其时钟校正方法
US20090129208A1 (en) * 2009-01-28 2009-05-21 Weiss Kenneth P Apparatus, system and method for keeping time
CN101951304B (zh) * 2010-08-31 2012-04-18 华为技术有限公司 微波传输装置

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180155A3 (en) * 1984-10-30 1988-03-09 Junghans Uhren Gmbh Radio-controlled watch
EP0180155A2 (fr) * 1984-10-30 1986-05-07 Junghans Uhren Gmbh Montre commandée par radio
EP0355567B1 (fr) * 1988-08-17 1995-01-04 Deutsche Thomson-Brandt GmbH Dispositif ainsi que procédé de correction de la date et de l'heure
EP0355567A2 (fr) * 1988-08-17 1990-02-28 Deutsche Thomson-Brandt GmbH Dispositif ainsi que procédé de correction de la date et de l'heure
EP0427515A2 (fr) * 1989-11-08 1991-05-15 Seiko Epson Corporation Pièce d'horlogerie électronique corrigée automatiquement
EP0427515A3 (en) * 1989-11-08 1991-10-09 Seiko Epson Corporation Automatically corrected electronic timepiece
DE4104767A1 (de) * 1990-05-22 1992-01-09 Samsung Electronics Co Ltd Schaltung zur automatischen zeiteinstellung
US7486657B2 (en) 2003-07-31 2009-02-03 Atmel Germany Gmbh Radio controlled clock and method for retrieving time information from time signals
US7333467B2 (en) 2003-12-08 2008-02-19 Atmel Germany Gmbh Receiver circuit and method using selectively variable amplification for receiving time signals from different transmitters
US7317905B2 (en) 2004-01-29 2008-01-08 Atmel Germany Gmbh Radio-controlled clock and method for gaining time information
US7369628B2 (en) 2004-01-29 2008-05-06 Atmel Germany Gmbh Method for gaining time information and receiver for implementing the method
DE102004004375B4 (de) 2004-01-29 2019-08-08 Atmel Corp. Verfahren zur Gewinnung von Zeitinformationen und Funkuhr
US8160184B2 (en) 2005-11-26 2012-04-17 Atmel Corporation Radio clock and method for extracting time information

Also Published As

Publication number Publication date
JPS5735780A (en) 1982-02-26
EP0042913B1 (fr) 1986-09-17
DE3175319D1 (en) 1986-10-23
DE3022949A1 (de) 1981-12-24
US4440501A (en) 1984-04-03
DE3022949C2 (de) 1983-11-17
EP0042913A3 (en) 1982-01-20

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