EP0935178A3 - Radio-controlled watch - Google Patents

Radio-controlled watch Download PDF

Info

Publication number
EP0935178A3
EP0935178A3 EP99300825A EP99300825A EP0935178A3 EP 0935178 A3 EP0935178 A3 EP 0935178A3 EP 99300825 A EP99300825 A EP 99300825A EP 99300825 A EP99300825 A EP 99300825A EP 0935178 A3 EP0935178 A3 EP 0935178A3
Authority
EP
European Patent Office
Prior art keywords
radio
circuit
voltage detection
voltage
electrical
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Withdrawn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
EP99300825A
Other languages
German (de)
French (fr)
Other versions
EP0935178A2 (en
Inventor
Toshiya Kanesaka
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Publication of EP0935178A2 publication Critical patent/EP0935178A2/en
Publication of EP0935178A3 publication Critical patent/EP0935178A3/en
Withdrawn legal-status Critical Current

Links

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

When a voltage generated by an electrical generator means becomes below a certain value, a detection signal from a voltage detection means opens a switching means. The supply of electrical power from an electrical storage means to a radio-controlled timepiece circuit is stopped. When the voltage generated by the generator means regains the given value, the detection signal from the voltage detection means closes the switching means, supplying electric power to a radio-controlled timepiece circuit. At the same time, a control signal from the voltage detection means activates a radio receiver circuit. Thus, a timepiece body circuit is synchronized by radio control technology. Precise time is displayed by a display means .
EP99300825A 1998-02-05 1999-02-04 Radio-controlled watch Withdrawn EP0935178A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2479898 1998-02-05
JP10024798A JP2973303B2 (en) 1998-02-05 1998-02-05 Radio-controlled clock

Publications (2)

Publication Number Publication Date
EP0935178A2 EP0935178A2 (en) 1999-08-11
EP0935178A3 true EP0935178A3 (en) 2001-08-22

Family

ID=12148225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99300825A Withdrawn EP0935178A3 (en) 1998-02-05 1999-02-04 Radio-controlled watch

Country Status (2)

Country Link
EP (1) EP0935178A3 (en)
JP (1) JP2973303B2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3596464B2 (en) 2000-02-10 2004-12-02 セイコーエプソン株式会社 Timing device and control method of timing device
US7102964B2 (en) 2000-02-10 2006-09-05 Seiko Epson Corporation Time keeping apparatus and control method therefor
JP2002051004A (en) * 2000-05-24 2002-02-15 Seiko Instruments Inc Power supply system and mobile information unit
DE10048642A1 (en) * 2000-09-22 2002-06-20 Deutsche Telekom Ag Electronic payment system with high security
US6744698B2 (en) * 2001-03-08 2004-06-01 Seiko Epson Corporation Battery powered electronic device and control method therefor
JP3454269B1 (en) 2002-03-26 2003-10-06 セイコーエプソン株式会社 Radio-controlled clock and method of controlling radio-controlled clock
JP3627724B2 (en) 2002-06-12 2005-03-09 セイコーエプソン株式会社 Timing device and control method of timing device
JP3594034B1 (en) 2003-03-04 2004-11-24 セイコーエプソン株式会社 Radio-controlled clock
CN100487607C (en) 2003-05-09 2009-05-13 精工爱普生株式会社 Electronic watch with wireless communication function
JP5294621B2 (en) * 2007-12-28 2013-09-18 シチズン時計株式会社 Electronics
JP4803230B2 (en) 2008-09-11 2011-10-26 カシオ計算機株式会社 Electronic clock
JP2009069162A (en) * 2008-11-28 2009-04-02 Casio Comput Co Ltd Electronic timepiece
JP4834172B2 (en) * 2010-07-26 2011-12-14 シチズンホールディングス株式会社 Electronic watch with solar cell
JP2013078175A (en) * 2011-09-29 2013-04-25 Seiko Instruments Inc Electronic apparatus
EP3591476B1 (en) * 2018-07-02 2021-04-21 The Swatch Group Research and Development Ltd Thermoelectric watch testable by its wearer
EP3591475B1 (en) 2018-07-02 2021-02-24 The Swatch Group Research and Development Ltd Thermoelectric watch suitable for being tested in production or after-sales service
JP7312573B2 (en) * 2019-02-27 2023-07-21 ラピスセミコンダクタ株式会社 antenna device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524290A1 (en) * 1985-07-06 1987-01-15 Junghans Uhren Gmbh ELECTRICAL SMALL DEVICE USED BY SOLAR CELLS, ESPECIALLY SOLAR WATCH
DE19543590C1 (en) * 1995-11-23 1997-01-30 Braun Ag Radio clock
WO1997028491A1 (en) * 1996-01-30 1997-08-07 Citizen Watch Co., Ltd. Electronic timepiece with power generating function

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524290A1 (en) * 1985-07-06 1987-01-15 Junghans Uhren Gmbh ELECTRICAL SMALL DEVICE USED BY SOLAR CELLS, ESPECIALLY SOLAR WATCH
DE19543590C1 (en) * 1995-11-23 1997-01-30 Braun Ag Radio clock
WO1997028491A1 (en) * 1996-01-30 1997-08-07 Citizen Watch Co., Ltd. Electronic timepiece with power generating function
EP0823677A1 (en) * 1996-01-30 1998-02-11 Citizen Watch Co., Ltd. Electronic timepiece with power generating function

Also Published As

Publication number Publication date
JPH11223684A (en) 1999-08-17
EP0935178A2 (en) 1999-08-11
JP2973303B2 (en) 1999-11-08

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