FR2216613B3 - - Google Patents
Info
- Publication number
- FR2216613B3 FR2216613B3 FR7403844A FR7403844A FR2216613B3 FR 2216613 B3 FR2216613 B3 FR 2216613B3 FR 7403844 A FR7403844 A FR 7403844A FR 7403844 A FR7403844 A FR 7403844A FR 2216613 B3 FR2216613 B3 FR 2216613B3
- Authority
- FR
- France
- Prior art keywords
- frequency
- flop
- pulse
- frequency divider
- output
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 239000010453 quartz Substances 0.000 abstract 1
- 238000007493 shaping process Methods 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
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
- G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C11/00—Synchronisation of independently-driven clocks
- G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
- G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
- G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
- G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
- G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
- G04C3/067—Driving circuits with distinct detecting and driving coils
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Automatic Disk Changers (AREA)
Abstract
The display system (4) is driven by an electronically controlled drive device (5, 6, 9). The drive device comprises an unbalance system (5) which is controlled by an electronic switching device (9) and, via a gear (6) drives the display system constructed as a pointer mechanism. The unbalance system (5) can oscillate at a first or at a second frequency. Also present are a quartz oscillator (1) and an electric frequency divider (2). The output of the frequency divider is connected to one input of a bistable flip-flop (3). With each zero passage, the unbalance system generates a voltage pulse which is fed via a pulse-shaping stage (5a) to a further frequency divider (8). The output of the further frequency divider is connected to the other input of the bistable flip-flop. The two said frequency dividers are constructed such that the pulse frequency of the pulse trains fed to the two inputs of the bistable flip-flop deviate only slightly from one another. The electronic switching device (9) is controlled by the pulses occurring at the output of the flip-flop, whose width depends on the phase relationship between the said pulse trains, and the unbalance system is influenced to oscillate either at the first or at the second frequency.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2305682A DE2305682C3 (en) | 1973-02-06 | 1973-02-06 | Time-keeping device, in particular a quartz wristwatch with an electronically controlled display system |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2216613A1 FR2216613A1 (en) | 1974-08-30 |
FR2216613B3 true FR2216613B3 (en) | 1976-11-26 |
Family
ID=5871059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7403844A Expired FR2216613B3 (en) | 1973-02-06 | 1974-02-05 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS6137584B2 (en) |
CH (1) | CH613356GA3 (en) |
DE (1) | DE2305682C3 (en) |
FR (1) | FR2216613B3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980001113A1 (en) * | 1978-11-20 | 1980-05-29 | Braun Ag | Time-keeper in particular quartz controlled clock |
DE2850325C3 (en) * | 1978-11-20 | 1981-07-09 | Braun Ag, 6000 Frankfurt | Time-keeping device, especially a large quartz clock with an electronically controlled display system |
DE2937838C2 (en) * | 1979-09-19 | 1986-08-28 | Braun Ag, 6000 Frankfurt | Method and arrangement for regulating speed and phase position in synchronous motors |
DE3230217A1 (en) * | 1982-08-13 | 1984-02-23 | Braun Ag, 6000 Frankfurt | Integrated circuit for a clock or a clock radio with analog time display |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5319944A (en) * | 1976-08-09 | 1978-02-23 | Mitsubishi Heavy Ind Ltd | Holder for bent tubes |
-
1973
- 1973-02-06 DE DE2305682A patent/DE2305682C3/en not_active Expired
-
1974
- 1974-02-05 CH CH157474A patent/CH613356GA3/en unknown
- 1974-02-05 JP JP49014838A patent/JPS6137584B2/ja not_active Expired
- 1974-02-05 FR FR7403844A patent/FR2216613B3/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2305682A1 (en) | 1974-08-29 |
JPS49113671A (en) | 1974-10-30 |
JPS6137584B2 (en) | 1986-08-25 |
DE2305682B2 (en) | 1978-02-16 |
DE2305682C3 (en) | 1978-10-05 |
CH613356B (en) | |
FR2216613A1 (en) | 1974-08-30 |
CH613356GA3 (en) | 1979-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |