CH604256B5 - - Google Patents

Info

Publication number
CH604256B5
CH604256B5 CH511976A CH511976A CH604256B5 CH 604256 B5 CH604256 B5 CH 604256B5 CH 511976 A CH511976 A CH 511976A CH 511976 A CH511976 A CH 511976A CH 604256 B5 CH604256 B5 CH 604256B5
Authority
CH
Switzerland
Application number
CH511976A
Inventor
Fernand Chetelat
Daniel Rochat
Original Assignee
Ebauches Sa
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 Ebauches Sa filed Critical Ebauches Sa
Priority to CH511976D priority Critical patent/CH511976A4/xx
Priority to CH511976A priority patent/CH604256B5/xx
Priority to DE2716734A priority patent/DE2716734C3/de
Priority to GB16054/77A priority patent/GB1570897A/en
Priority to FR7711683A priority patent/FR2349161A1/fr
Priority to US05/789,199 priority patent/US4154053A/en
Priority to JP52047271A priority patent/JPS6039191B2/ja
Publication of CH604256B5 publication Critical patent/CH604256B5/xx

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/022—Circuits for deriving low frequency timing pulses from pulses of higher frequency the desired number of pulses per unit of time being obtained by adding to or substracting from a pulse train one or more pulses
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G5/00—Setting, i.e. correcting or changing, the time-indication
    • G04G5/02—Setting, i.e. correcting or changing, the time-indication by temporarily changing the number of pulses per unit time, e.g. quick-feed method

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
CH511976A 1976-04-23 1976-04-23 CH604256B5 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CH511976D CH511976A4 (ja) 1976-04-23 1976-04-23
CH511976A CH604256B5 (ja) 1976-04-23 1976-04-23
DE2716734A DE2716734C3 (de) 1976-04-23 1977-04-13 Elektronische Uhr mit einem Frequenzteiler mit einstellbarem Teilungsverhältnis und Verfahren zum Betrieb dieser Uhr
GB16054/77A GB1570897A (en) 1976-04-23 1977-04-18 Electronic timepiece having an adjustable rate of division and method for its manufacture
FR7711683A FR2349161A1 (fr) 1976-04-23 1977-04-19 Piece d'horlogerie electronique a taux de division ajustable et procede pour sa mise en action
US05/789,199 US4154053A (en) 1976-04-23 1977-04-20 Electronic timepiece having an adjustable rate of division and method for its manufacture
JP52047271A JPS6039191B2 (ja) 1976-04-23 1977-04-23 分周率が調節可能な電子時計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH511976A CH604256B5 (ja) 1976-04-23 1976-04-23

Publications (1)

Publication Number Publication Date
CH604256B5 true CH604256B5 (ja) 1978-08-31

Family

ID=4288240

Family Applications (2)

Application Number Title Priority Date Filing Date
CH511976A CH604256B5 (ja) 1976-04-23 1976-04-23
CH511976D CH511976A4 (ja) 1976-04-23 1976-04-23

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH511976D CH511976A4 (ja) 1976-04-23 1976-04-23

Country Status (6)

Country Link
US (1) US4154053A (ja)
JP (1) JPS6039191B2 (ja)
CH (2) CH604256B5 (ja)
DE (1) DE2716734C3 (ja)
FR (1) FR2349161A1 (ja)
GB (1) GB1570897A (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH624539B (fr) * 1977-12-02 Ebauches Electroniques Sa Piece d'horlogerie electronique avec correction automatique de l'ecart de marche.
US4282594A (en) * 1978-12-27 1981-08-04 Citizen Watch Company Limited Electronic timepiece
US4382692A (en) * 1979-11-26 1983-05-10 Ebauches, S.A. Analog-display electronic timepiece comprising a divider with an adjustable division factor
US4407589A (en) * 1981-02-13 1983-10-04 Davidson John R Error correction method and apparatus for electronic timepieces
US4408897A (en) * 1982-09-22 1983-10-11 Ebauches Electroniques S.A. Electronic timepiece having a digital frequency correction circuit
US5204845A (en) * 1988-12-19 1993-04-20 Alcatel N.V. Clock synchronization
AU631153B2 (en) * 1988-12-19 1992-11-19 Alcatel Australia Limited Clock synchronization
US5327404A (en) * 1990-11-27 1994-07-05 Vlsi Technology, Inc. On-chip frequency trimming method for real-time clock
US5717661A (en) * 1994-12-20 1998-02-10 Poulson; T. Earl Method and apparatus for adjusting the accuracy of electronic timepieces
DE19847753A1 (de) * 1998-10-16 2000-04-20 Bosch Gmbh Robert Uhr mit einem Mikroprozessor
US6616328B1 (en) * 1999-10-26 2003-09-09 Seiko Instruments Inc. High accuracy timepiece
JP5119002B2 (ja) * 2008-02-29 2013-01-16 シチズン時計株式会社 時計回路および電子時計
US20090129208A1 (en) * 2009-01-28 2009-05-21 Weiss Kenneth P Apparatus, system and method for keeping time
CN102822750B (zh) * 2010-03-26 2014-06-25 西铁城控股株式会社 电波表
CN103197531A (zh) * 2013-04-15 2013-07-10 航天科技控股集团股份有限公司 汽车仪表盘电子时钟精度调整方法
JP6657699B2 (ja) * 2015-09-16 2020-03-04 セイコーエプソン株式会社 計時装置及び計時方法、並びに、電子機器

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914931A (en) * 1974-10-01 1975-10-28 Suwa Seikosha Kk Electronic timepiece

Also Published As

Publication number Publication date
CH511976A4 (ja) 1977-08-31
DE2716734A1 (de) 1977-10-27
JPS6039191B2 (ja) 1985-09-04
US4154053A (en) 1979-05-15
FR2349161B1 (ja) 1981-07-10
DE2716734B2 (de) 1981-06-11
DE2716734C3 (de) 1982-02-18
GB1570897A (en) 1980-07-09
FR2349161A1 (fr) 1977-11-18
JPS52130669A (en) 1977-11-02

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: ETA S.A. FABRIQUES D EBAUCHES

PL Patent ceased