EP0347249A3 - An ic chip for an analog electronic watch - Google Patents

An ic chip for an analog electronic watch Download PDF

Info

Publication number
EP0347249A3
EP0347249A3 EP19890306144 EP89306144A EP0347249A3 EP 0347249 A3 EP0347249 A3 EP 0347249A3 EP 19890306144 EP19890306144 EP 19890306144 EP 89306144 A EP89306144 A EP 89306144A EP 0347249 A3 EP0347249 A3 EP 0347249A3
Authority
EP
European Patent Office
Prior art keywords
chip
electronic watch
analog electronic
step motors
software
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
EP19890306144
Other languages
German (de)
French (fr)
Other versions
EP0347249B1 (en
EP0347249A2 (en
Inventor
Hiroshi C/O Seiko Epson Corporation Yabe
Tatsuo C/O Seiko Epson Corporation Moriya
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 Epson Corp
Original Assignee
Seiko Epson Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15506245&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0347249(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of EP0347249A2 publication Critical patent/EP0347249A2/en
Publication of EP0347249A3 publication Critical patent/EP0347249A3/en
Application granted granted Critical
Publication of EP0347249B1 publication Critical patent/EP0347249B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

An IC chip (20) for an analog electronic watch has a core CPU (201), a program memory (202) for storing software for actuating the core CPU, and a motor drive controlling circuit (212) for controlling a plurality of step motors according to commands of the software. An analog electronic watch having such an IC chip also has a plurality of step motors, and at least one gear train mechanism to couple each step motor to a rotatable indicator hand. Drive of the step motors can be controlled arbitrarily according to the software stored in the program memory.
EP89306144A 1988-06-17 1989-06-16 An IC chip for an analog electronic watch Expired - Lifetime EP0347249B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15087388 1988-06-17
JP150873/88 1988-06-17

Publications (3)

Publication Number Publication Date
EP0347249A2 EP0347249A2 (en) 1989-12-20
EP0347249A3 true EP0347249A3 (en) 1991-03-20
EP0347249B1 EP0347249B1 (en) 1994-06-01

Family

ID=15506245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89306144A Expired - Lifetime EP0347249B1 (en) 1988-06-17 1989-06-16 An IC chip for an analog electronic watch

Country Status (6)

Country Link
EP (1) EP0347249B1 (en)
JP (3) JP3019324B2 (en)
KR (1) KR940008709B1 (en)
CN (1) CN1025458C (en)
DE (1) DE68915618T2 (en)
HK (1) HK107097A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685502A1 (en) * 1991-12-24 1993-06-25 Electrald Electronic clock for chess with analog display
EP1426838B1 (en) * 1998-09-10 2007-10-17 Seiko Epson Corporation Timepiece
JP2002048880A (en) * 2000-07-31 2002-02-15 Rhythm Watch Co Ltd Driving method for stepping motor for timepiece
KR100495970B1 (en) 2000-10-10 2005-06-17 마쯔시다덴기산교 가부시키가이샤 Flow measuring device
JP4729250B2 (en) * 2003-11-12 2011-07-20 シチズンホールディングス株式会社 Electronic clock
KR100698503B1 (en) 2005-01-21 2007-03-21 주식회사 여의시스템 A motor-controlling device using a microprocessor and a method therefor
DE602006005058D1 (en) * 2006-11-13 2009-03-19 Eta Sa Mft Horlogere Suisse A drive module comprising a MEMS micromotor, method of making this module, and clock equipped with this module
JP2011013120A (en) * 2009-07-02 2011-01-20 Seiko Instruments Inc Integrated circuit for electronic clock, and electronic clock
JP5212326B2 (en) * 2009-09-24 2013-06-19 カシオ計算機株式会社 Analog electronic clock
JP5490519B2 (en) * 2009-12-24 2014-05-14 セイコーインスツル株式会社 Chronograph clock
JP5540926B2 (en) * 2010-06-21 2014-07-02 カシオ計算機株式会社 Analog electronic clock
JP6410025B2 (en) * 2014-08-29 2018-10-24 カシオ計算機株式会社 Electronic clock
JP6668363B2 (en) * 2015-02-13 2020-03-18 ミクロドゥル アーゲー Electronic circuit for controlling the operation of the watch
JP6423742B2 (en) * 2015-03-02 2018-11-14 シチズン時計株式会社 Electronic watch movement and electronic watch
JP6778573B2 (en) * 2016-09-30 2020-11-04 シチズン時計株式会社 Electronic clock
JP6778574B2 (en) * 2016-09-30 2020-11-04 シチズン時計株式会社 Electronic clock

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382692A (en) * 1979-11-26 1983-05-10 Ebauches, S.A. Analog-display electronic timepiece comprising a divider with an adjustable division factor
DE3325302A1 (en) * 1982-07-15 1984-01-19 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa STEPPER MOTOR CONTROL DEVICE
GB2154767A (en) * 1984-01-13 1985-09-11 Citizen Watch Co Ltd Electronic timepiece
GB2167884A (en) * 1984-09-18 1986-06-04 Citizen Watch Co Ltd Electronic timepiece with a chronograph system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0648297B2 (en) * 1985-08-29 1994-06-22 カシオ計算機株式会社 Pointer-type alarm clock
JPS631992A (en) * 1986-06-20 1988-01-06 Seiko Instr & Electronics Ltd World time-piece
CH664868GA3 (en) * 1986-07-10 1988-04-15
GB2193011B (en) * 1986-07-21 1991-01-30 Schlumberger Ind Ltd Programmable time switch
CH665077GA3 (en) * 1986-10-15 1988-04-29
ATE62349T1 (en) * 1987-01-02 1991-04-15 Motorola Inc CONTROL INTERFACE FOR COMBINED WATCH AND PEOPLE LOCATOR FUNCTIONS.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4382692A (en) * 1979-11-26 1983-05-10 Ebauches, S.A. Analog-display electronic timepiece comprising a divider with an adjustable division factor
DE3325302A1 (en) * 1982-07-15 1984-01-19 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa STEPPER MOTOR CONTROL DEVICE
GB2154767A (en) * 1984-01-13 1985-09-11 Citizen Watch Co Ltd Electronic timepiece
GB2167884A (en) * 1984-09-18 1986-06-04 Citizen Watch Co Ltd Electronic timepiece with a chronograph system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOURNAL SUISSE D'HORLOGERIE ET DE BIJOUTERIE, no. 2, 1981, pages 331-346, Lausanne, CH; "Réparation des montres à affichage combiné: analogique + LCD" *

Also Published As

Publication number Publication date
DE68915618D1 (en) 1994-07-07
EP0347249B1 (en) 1994-06-01
JP3019324B2 (en) 2000-03-13
KR940008709B1 (en) 1994-09-26
CN1025458C (en) 1994-07-13
JP2000046967A (en) 2000-02-18
DE68915618T2 (en) 1994-09-15
JPH0277679A (en) 1990-03-16
CN1038708A (en) 1990-01-10
HK107097A (en) 1997-08-22
EP0347249A2 (en) 1989-12-20
JPH11194178A (en) 1999-07-21
KR900000740A (en) 1990-01-31
JP3259718B2 (en) 2002-02-25

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