CH637520GA3 - - Google Patents
Download PDFInfo
- Publication number
- CH637520GA3 CH637520GA3 CH120179A CH120179A CH637520GA3 CH 637520G A3 CH637520G A3 CH 637520GA3 CH 120179 A CH120179 A CH 120179A CH 120179 A CH120179 A CH 120179A CH 637520G A3 CH637520G A3 CH 637520GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- wristwatch
- additional pulses
- temperature
- hourly
- memory
- Prior art date
Links
- 239000013078 crystal Substances 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
- G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
- H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
- H03L1/027—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/subtract logic circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Glass Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1264778A JPS54105580A (en) | 1978-02-07 | 1978-02-07 | Crystal oscillation type wristwatch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CH637520B CH637520B (fr) | |
| CH637520GA3 true CH637520GA3 (enrdf_load_stackoverflow) | 1983-08-15 |
Family
ID=11811148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH120179A CH637520B (fr) | 1978-02-07 | 1979-02-07 | Montre-bracelet a quartz. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4321698A (enrdf_load_stackoverflow) |
| JP (1) | JPS54105580A (enrdf_load_stackoverflow) |
| CH (1) | CH637520B (enrdf_load_stackoverflow) |
| GB (1) | GB2018473B (enrdf_load_stackoverflow) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3111736A1 (de) * | 1981-03-25 | 1982-11-25 | Siemens AG, 1000 Berlin und 8000 München | Taktgeneratoranordnung |
| US4453834A (en) * | 1981-07-03 | 1984-06-12 | Citizen Watch Company Limited | Electronic timepiece with temperature compensation |
| US4473303A (en) * | 1982-02-19 | 1984-09-25 | Citizen Watch Company Limited | Electronic timepiece |
| GB2162974B (en) * | 1984-08-09 | 1988-04-27 | Suwa Seikosha Kk | Electronic timepiece |
| US4903251A (en) * | 1989-09-05 | 1990-02-20 | Ford Motor Company | Accuracy adjustment for time-of-day clock using a microcontroller |
| JP3467631B2 (ja) * | 1994-06-07 | 2003-11-17 | 株式会社ルネサステクノロジ | ロジックｌｓｉ |
| US6086244A (en) | 1997-03-20 | 2000-07-11 | Stmicroelectronics, Inc. | Low power, cost effective, temperature compensated, real time clock and method of clocking systems |
| JP4264494B2 (ja) * | 2003-05-15 | 2009-05-20 | Ｏｋｉセミコンダクタ株式会社 | 標準電波受信時刻装置 |
| US8392001B1 (en) * | 2008-05-03 | 2013-03-05 | Integrated Device Technology, Inc. | Method and apparatus for externally aided self adjusting real time clock |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH540520A (fr) * | 1971-04-22 | 1973-02-15 | Ebauches Sa | Mouvement d'horlogerie électronique |
| CH554015A (enrdf_load_stackoverflow) * | 1971-10-15 | 1974-09-13 | ||
| CH616297B (de) * | 1974-09-16 | Centre Electron Horloger | Garde-temps compense en fonction d'au moins un parametre physique d'environnement. |
-
1978
- 1978-02-07 JP JP1264778A patent/JPS54105580A/ja active Pending
-
1979
- 1979-01-31 GB GB7903458A patent/GB2018473B/en not_active Expired
- 1979-02-07 CH CH120179A patent/CH637520B/fr not_active IP Right Cessation
-
1981
- 1981-01-19 US US06/225,933 patent/US4321698A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2018473B (en) | 1982-07-21 |
| GB2018473A (en) | 1979-10-17 |
| US4321698A (en) | 1982-03-23 |
| JPS54105580A (en) | 1979-08-18 |
| CH637520B (fr) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |