CH677577GA3 - - Google Patents

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Publication number
CH677577GA3
CH677577GA3 CH405489A CH405489A CH677577GA3 CH 677577G A3 CH677577G A3 CH 677577GA3 CH 405489 A CH405489 A CH 405489A CH 405489 A CH405489 A CH 405489A CH 677577G A3 CH677577G A3 CH 677577GA3
Authority
CH
Switzerland
Prior art keywords
output signal
time base
frequency
timepiece
generating means
Prior art date
Application number
CH405489A
Other languages
English (en)
Other versions
CH677577B5 (fr
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 filed Critical
Priority to CH4054/89A priority Critical patent/CH677577B5/fr
Priority to EP90120671A priority patent/EP0427077B1/fr
Priority to DE90120671T priority patent/DE69001009T2/de
Priority to JP2302792A priority patent/JP3066605B2/ja
Publication of CH677577GA3 publication Critical patent/CH677577GA3/fr
Publication of CH677577B5 publication Critical patent/CH677577B5/fr

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
    • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
    • 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
    • G04G3/027—Circuits for deriving low frequency timing pulses from pulses of higher frequency by combining pulse-trains of different frequencies, e.g. obtained from two independent oscillators or from a common oscillator by means of different frequency dividing ratios

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Liquid Crystal Substances (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
CH4054/89A 1989-11-10 1989-11-10 CH677577B5 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH4054/89A CH677577B5 (fr) 1989-11-10 1989-11-10
EP90120671A EP0427077B1 (fr) 1989-11-10 1990-10-29 Pièce d'horlogerie électronique
DE90120671T DE69001009T2 (de) 1989-11-10 1990-10-29 Elektronisches Uhrwerk.
JP2302792A JP3066605B2 (ja) 1989-11-10 1990-11-09 電子時計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH4054/89A CH677577B5 (fr) 1989-11-10 1989-11-10

Publications (2)

Publication Number Publication Date
CH677577GA3 true CH677577GA3 (fr) 1991-06-14
CH677577B5 CH677577B5 (fr) 1991-12-13

Family

ID=4268958

Family Applications (1)

Application Number Title Priority Date Filing Date
CH4054/89A CH677577B5 (fr) 1989-11-10 1989-11-10

Country Status (4)

Country Link
EP (1) EP0427077B1 (fr)
JP (1) JP3066605B2 (fr)
CH (1) CH677577B5 (fr)
DE (1) DE69001009T2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW475991B (en) * 1998-12-28 2002-02-11 Nippon Kouatsu Electric Co Ltd Fault point location system
JP2001343474A (ja) * 2000-06-02 2001-12-14 Seiko Epson Corp 電子時計、電子時計の制御方法及び電子時計の検査システム
EP3168695B1 (fr) 2015-11-13 2021-03-10 ETA SA Manufacture Horlogère Suisse Procédé de test de la marche d'une montre à quartz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2043967A (en) * 1978-12-27 1980-10-08 Citizen Watch Co Ltd Testing electronic timepieces
US4241435A (en) * 1978-10-06 1980-12-23 Citizen Watch Co., Ltd. Electronic timepiece oscillator circuit
EP0069372A1 (fr) * 1981-07-06 1983-01-12 OMEGA Louis Brandt & Frère S.A. Procédé pour contrôler la marche d'une pièce d'horlogerie et pièce d'horlogerie adaptée à ce procédé
US4408897A (en) * 1982-09-22 1983-10-11 Ebauches Electroniques S.A. Electronic timepiece having a digital frequency correction circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241435A (en) * 1978-10-06 1980-12-23 Citizen Watch Co., Ltd. Electronic timepiece oscillator circuit
GB2043967A (en) * 1978-12-27 1980-10-08 Citizen Watch Co Ltd Testing electronic timepieces
EP0069372A1 (fr) * 1981-07-06 1983-01-12 OMEGA Louis Brandt & Frère S.A. Procédé pour contrôler la marche d'une pièce d'horlogerie et pièce d'horlogerie adaptée à ce procédé
US4408897A (en) * 1982-09-22 1983-10-11 Ebauches Electroniques S.A. Electronic timepiece having a digital frequency correction circuit

Also Published As

Publication number Publication date
EP0427077A1 (fr) 1991-05-15
EP0427077B1 (fr) 1993-03-03
JP3066605B2 (ja) 2000-07-17
DE69001009D1 (de) 1993-04-08
DE69001009T2 (de) 1993-09-30
CH677577B5 (fr) 1991-12-13
JPH03172791A (ja) 1991-07-26

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Legal Events

Date Code Title Description
PL Patent ceased