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
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)
- Lubrication Of Internal Combustion Engines (AREA)
- Liquid Crystal Substances (AREA)
- Developing Agents For Electrophotography (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4054/89A CH677577B5 (de) | 1989-11-10 | 1989-11-10 | |
EP90120671A EP0427077B1 (de) | 1989-11-10 | 1990-10-29 | Elektronisches Uhrwerk |
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 (de) | 1989-11-10 | 1989-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CH677577GA3 true CH677577GA3 (de) | 1991-06-14 |
CH677577B5 CH677577B5 (de) | 1991-12-13 |
Family
ID=4268958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH4054/89A CH677577B5 (de) | 1989-11-10 | 1989-11-10 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0427077B1 (de) |
JP (1) | JP3066605B2 (de) |
CH (1) | CH677577B5 (de) |
DE (1) | DE69001009T2 (de) |
Families Citing this family (2)
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 |
EP3168695B1 (de) * | 2015-11-13 | 2021-03-10 | ETA SA Manufacture Horlogère Suisse | Testverfahren für ganggenauigkeit einer quartzuhr |
Citations (4)
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 (de) * | 1981-07-06 | 1983-01-12 | OMEGA Louis Brandt & Frère S.A. | Verfahren zur Steuerung des Ganges einer Uhr und Uhr nach diesem Verfahren |
US4408897A (en) * | 1982-09-22 | 1983-10-11 | Ebauches Electroniques S.A. | Electronic timepiece having a digital frequency correction circuit |
-
1989
- 1989-11-10 CH CH4054/89A patent/CH677577B5/fr not_active IP Right Cessation
-
1990
- 1990-10-29 DE DE90120671T patent/DE69001009T2/de not_active Expired - Fee Related
- 1990-10-29 EP EP90120671A patent/EP0427077B1/de not_active Expired - Lifetime
- 1990-11-09 JP JP2302792A patent/JP3066605B2/ja not_active Expired - Fee Related
Patent Citations (4)
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 (de) * | 1981-07-06 | 1983-01-12 | OMEGA Louis Brandt & Frère S.A. | Verfahren zur Steuerung des Ganges einer Uhr und Uhr nach diesem Verfahren |
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 |
---|---|
JP3066605B2 (ja) | 2000-07-17 |
JPH03172791A (ja) | 1991-07-26 |
CH677577B5 (de) | 1991-12-13 |
DE69001009T2 (de) | 1993-09-30 |
DE69001009D1 (de) | 1993-04-08 |
EP0427077A1 (de) | 1991-05-15 |
EP0427077B1 (de) | 1993-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |