EP0909996A3 - Clock/radio powered by solar energy - Google Patents

Clock/radio powered by solar energy Download PDF

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Publication number
EP0909996A3
EP0909996A3 EP98119256A EP98119256A EP0909996A3 EP 0909996 A3 EP0909996 A3 EP 0909996A3 EP 98119256 A EP98119256 A EP 98119256A EP 98119256 A EP98119256 A EP 98119256A EP 0909996 A3 EP0909996 A3 EP 0909996A3
Authority
EP
European Patent Office
Prior art keywords
leads
radio clock
solar
pulse
powered
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Withdrawn
Application number
EP98119256A
Other languages
German (de)
French (fr)
Other versions
EP0909996A2 (en
Inventor
Johannes Dr. Neudecker
Thomas Dr. Lechner
Holger Rudolph
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.)
Junghans Uhren GmbH
Original Assignee
Junghans Uhren GmbH
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 Junghans Uhren GmbH filed Critical Junghans Uhren GmbH
Publication of EP0909996A2 publication Critical patent/EP0909996A2/en
Publication of EP0909996A3 publication Critical patent/EP0909996A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/08—Arrangements for preventing voltage drop due to overloading the power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)

Abstract

Bei einer solarbetriebenen Uhr kann es vor endgültigem Absinken der Betriebsspannung unter den Abschaltpegel zu einer Fehlanzeige kommen, weil nicht mehr jeder Impuls für den elektromechanischen Wandler zur Anzeige-Fortschaltung ausreicht, da die Belastung des Impulses zu einem sehr kurzzeitigen Zusammenbruch der schon kritisch abgesunkenen Betriebsspannung aus dem Solarzellen-Pufferspeicher führt. Bei einer solarbetriebenen Funkuhr führt erfindungsgemäß die von einem Schrittwächter festgestellte Unterbrechung bzw. Verkürzung eines Antriebsimpulses für die zeithaltende Zeigerbewegung zur Auslösung eines Resetkommandos, um den Empfänger der Funkuhr einzuschalten und über die Funkuhren-Prozessorsteuerung dadurch die Zeigerstellung automatisch auf die aus dem aktuellen Zeittelegramm dekodierte absolute Zeit zu korrigieren.

Figure 00000001
In the case of a solar-powered watch, there can be a false display before the operating voltage drops below the switch-off level, because not every pulse for the electromechanical converter is sufficient to advance the display, since the load of the pulse leads to a very brief breakdown of the already critically lowered operating voltage leads to the solar cell buffer memory. In the case of a solar-powered radio clock, the interruption or shortening of a drive pulse for the time-keeping pointer movement, as determined by a step monitor, leads to the triggering of a reset command in order to switch on the radio clock receiver and, via the radio clock processor control, the pointer position automatically to the absolute decoded from the current time telegram Time to correct.
Figure 00000001
EP98119256A 1997-10-17 1998-10-13 Clock/radio powered by solar energy Withdrawn EP0909996A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29718454U 1997-10-17
DE29718454U DE29718454U1 (en) 1997-10-17 1997-10-17 Solar powered radio clock

Publications (2)

Publication Number Publication Date
EP0909996A2 EP0909996A2 (en) 1999-04-21
EP0909996A3 true EP0909996A3 (en) 2002-12-18

Family

ID=8047368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119256A Withdrawn EP0909996A3 (en) 1997-10-17 1998-10-13 Clock/radio powered by solar energy

Country Status (4)

Country Link
US (1) US6205091B1 (en)
EP (1) EP0909996A3 (en)
JP (1) JPH11160464A (en)
DE (1) DE29718454U1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA003176B1 (en) * 1999-09-02 2003-02-27 Инновасио Виариа, С.Л. Signalling beacon
EP1269272B1 (en) * 2000-08-11 2006-09-27 Seiko Epson Corporation Electronic apparatus and method of controlling the electronic apparatus
JP3536852B2 (en) 2002-03-27 2004-06-14 セイコーエプソン株式会社 Electronic clock
DE602004020361D1 (en) 2003-05-09 2009-05-14 Seiko Epson Corp Electronic clock with a radio communication function
JP5353303B2 (en) * 2009-03-02 2013-11-27 セイコーエプソン株式会社 Electronic device and satellite signal receiving method for electronic device
JP5953722B2 (en) * 2011-12-05 2016-07-20 セイコーエプソン株式会社 Electronic clock
JP6510981B2 (en) * 2013-11-12 2019-05-08 セイコーインスツル株式会社 Time adjustment system and clock

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285838A1 (en) * 1987-03-11 1988-10-12 Junghans Uhren Gmbh Autonomous radio-controlled clock
EP0553722A2 (en) * 1992-01-28 1993-08-04 Junghans Uhren Gmbh Small autonomous radio timepiece with analogue display, in particular wristwatch radio
EP0591557A1 (en) * 1992-04-27 1994-04-13 Citizen Watch Co. Ltd. Hand-indication electronic timepiece

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023344A (en) * 1975-09-03 1977-05-17 Kabushiki Kaisha Suwa Seikosha Automatically corrected electronic timepiece
US4582434A (en) * 1984-04-23 1986-04-15 Heath Company Time corrected, continuously updated clock
DE3439638C1 (en) 1984-10-30 1986-05-15 Gebrüder Junghans GmbH, 7230 Schramberg Autonomous radio clock
DE3524290A1 (en) 1985-07-06 1987-01-15 Junghans Uhren Gmbh ELECTRICAL SMALL DEVICE USED BY SOLAR CELLS, ESPECIALLY SOLAR WATCH
DE9010270U1 (en) * 1990-05-04 1991-09-05 Junghans Uhren GmbH, 7230 Schramberg Autonomous radio clock
DE4128752C2 (en) 1991-08-29 1997-12-04 Junghans Uhren Gmbh Position detection and correction device
DE19700108B4 (en) * 1997-01-03 2005-12-22 Citizen Watch Co., Ltd. Electronic clock and charging method of the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285838A1 (en) * 1987-03-11 1988-10-12 Junghans Uhren Gmbh Autonomous radio-controlled clock
EP0553722A2 (en) * 1992-01-28 1993-08-04 Junghans Uhren Gmbh Small autonomous radio timepiece with analogue display, in particular wristwatch radio
EP0591557A1 (en) * 1992-04-27 1994-04-13 Citizen Watch Co. Ltd. Hand-indication electronic timepiece

Also Published As

Publication number Publication date
US6205091B1 (en) 2001-03-20
JPH11160464A (en) 1999-06-18
EP0909996A2 (en) 1999-04-21
DE29718454U1 (en) 1999-02-11

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