IT1027611B - Orologio elettronico al quarzo con circuiti integrati - Google Patents
Orologio elettronico al quarzo con circuiti integratiInfo
- Publication number
- IT1027611B IT1027611B IT30455/74A IT3045574A IT1027611B IT 1027611 B IT1027611 B IT 1027611B IT 30455/74 A IT30455/74 A IT 30455/74A IT 3045574 A IT3045574 A IT 3045574A IT 1027611 B IT1027611 B IT 1027611B
- Authority
- IT
- Italy
- Prior art keywords
- integrated circuits
- electronic watch
- quartz electronic
- adjustable
- quartz
- Prior art date
Links
- 239000010453 quartz Substances 0.000 title abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title abstract 2
- 230000001629 suppression Effects 0.000 abstract 1
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
- H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
- H03K23/662—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses by adding or suppressing pulses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732362470 DE2362470C3 (de) | 1973-12-15 | Elektronische Quarzuhr mit integrierten Schaltungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT1027611B true IT1027611B (it) | 1978-12-20 |
Family
ID=5900892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT30455/74A IT1027611B (it) | 1973-12-15 | 1974-12-12 | Orologio elettronico al quarzo con circuiti integrati |
Country Status (5)
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5179371A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1974-12-18 | 1976-07-10 | Suwa Seikosha Kk | |
| JPS51127657A (en) * | 1975-04-28 | 1976-11-06 | Seiko Instr & Electronics Ltd | Standard signal generator |
| GB1513633A (en) * | 1975-05-14 | 1978-06-07 | Seiko Koki Kk | Motor assembly |
| US4188775A (en) * | 1976-11-16 | 1980-02-19 | Citizen Watch Company Limited | Frequency adjustment means for electric timepiece |
| CH620565B (fr) * | 1977-02-28 | Ebauches Sa | Piece d'horlogerie electronique. | |
| CH621036B (fr) * | 1977-02-28 | Berney Sa Jean Claude | Circuit integre pour piece d'horlogerie. | |
| JPS5421779A (en) * | 1977-07-19 | 1979-02-19 | Seiko Epson Corp | Miniature electronic watch |
| JPS5481873A (en) * | 1977-12-12 | 1979-06-29 | Seiko Instr & Electronics Ltd | Electronic watch |
| DE3021863C2 (de) * | 1980-06-11 | 1985-03-21 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Elektronische Uhr mit einer Zeitbasis und einer Temperaturkompensationsschaltungsanordnung |
| DE3022949C2 (de) * | 1980-06-19 | 1983-11-17 | Werner 6802 Ladenburg Schulz | Verfahren zur automatischen Korrektur der Gangabweichung einer Uhr |
| JPS5779797U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1980-11-04 | 1982-05-17 | ||
| CH658765GA3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1984-04-03 | 1986-12-15 | ||
| US4951303A (en) * | 1988-10-31 | 1990-08-21 | Larson Lawrence E | High speed digital programmable frequency divider |
| DE4031532C1 (en) * | 1990-10-05 | 1992-03-26 | D.I.E.N.E.S Apparatebau Gmbh, 6052 Muehlheim, De | Variable frequency generator e.g. for motor control converter - has gate circuit between pulse generating oscillator and frequency divider |
| US5444674A (en) * | 1994-06-08 | 1995-08-22 | Sellie; Clifford N. | Hand held decimal timer with improved frequency division |
| EP0984342A1 (fr) * | 1998-08-31 | 2000-03-08 | Swatch Ag | Pièce d'horlogerie électronique comportant une indication horaire fondée sur un système décimal |
| JP2013034174A (ja) * | 2011-06-28 | 2013-02-14 | Seiko Instruments Inc | 電子機器 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3777471A (en) * | 1971-08-27 | 1973-12-11 | Bulova Watch Co Inc | Presettable frequency divider for electronic timepiece |
| CH554015A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-10-15 | 1974-09-13 |
-
1974
- 1974-12-05 US US05/529,772 patent/US3945194A/en not_active Expired - Lifetime
- 1974-12-12 IT IT30455/74A patent/IT1027611B/it active
- 1974-12-12 FR FR7440881A patent/FR2254815B1/fr not_active Expired
- 1974-12-13 CH CH1660374A patent/CH618830B/xx not_active IP Right Cessation
- 1974-12-16 JP JP49143570A patent/JPS6034077B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3945194A (en) | 1976-03-23 |
| DE2362470B2 (de) | 1975-12-04 |
| FR2254815B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-01-30 |
| JPS5093475A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-07-25 |
| JPS6034077B2 (ja) | 1985-08-06 |
| FR2254815A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-07-11 |
| CH618830B (de) | |
| DE2362470A1 (de) | 1975-06-19 |
| CH618830GA3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-08-29 |
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