CH622160GA3 - - Google Patents
Download PDFInfo
- Publication number
- CH622160GA3 CH622160GA3 CH1577577A CH1577577A CH622160GA3 CH 622160G A3 CH622160G A3 CH 622160GA3 CH 1577577 A CH1577577 A CH 1577577A CH 1577577 A CH1577577 A CH 1577577A CH 622160G A3 CH622160G A3 CH 622160GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- alarm
- time
- timepiece
- stepping motor
- signal
- Prior art date
Links
- 230000005284 excitation Effects 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G13/00—Producing acoustic time signals
- G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G13/00—Producing acoustic time signals
- G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
- G04G13/021—Details
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromechanical Clocks (AREA)
Abstract
An electronic timepiece with an alarm device, having a digital display unit for indication of the actual time and a memorized time of alarm, and an analog display unit driven by a stepping motor. In such a timepiece, the alarm signal is produced from signals delivered by the frequency divider and is transmitted to an electroacoustic transducer when coincidence exists between the time as measured by the timepiece and the memorized time of alarm. During the signal, the consumption of current is relatively high and is further increased when a driving pulse of the stepping motor is superimposed upon the alarm signal. Such a peak of current is undesirable because the magnetic field produced by the excitation coil of the electroacoustic transducer may disturb the correct functioning of the motor. A solution to this problem is to shift the alarm pulses in time with respect to the driving pulses so that they never appear simultaneously. To this end, the timepiece includes an electronic circuit which is enabled by an alarm logic circuit, and which receives signals from the frequency divider for delivering an alarm signal, at the time of alarm, such that the alarm signal is shifted in time with respect to the driving pulses of the stepping motor.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1577577A CH622160GA3 (en) | 1977-12-21 | 1977-12-21 | |
US05/955,199 US4244041A (en) | 1977-12-21 | 1978-10-27 | Electronic timepiece with an alarm device |
DE2848675A DE2848675B2 (en) | 1977-12-21 | 1978-11-09 | Electronic alarm clock |
JP15361778A JPS54112687A (en) | 1977-12-21 | 1978-12-12 | Electronic timepiece with alarm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1577577A CH622160GA3 (en) | 1977-12-21 | 1977-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH622160GA3 true CH622160GA3 (en) | 1981-03-31 |
Family
ID=4411835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1577577A CH622160GA3 (en) | 1977-12-21 | 1977-12-21 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4244041A (en) |
JP (1) | JPS54112687A (en) |
CH (1) | CH622160GA3 (en) |
DE (1) | DE2848675B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125410A (en) * | 1979-03-22 | 1980-09-27 | Sharp Corp | Voice reporting apparatus |
DE2941388A1 (en) * | 1979-10-12 | 1981-04-23 | Philips Patentverwaltung Gmbh, 2000 Hamburg | CIRCUIT ARRANGEMENT FOR AN ELECTRONIC CLOCK WITH ALARM DEVICE |
JPS5739376A (en) * | 1980-08-20 | 1982-03-04 | Seiko Instr & Electronics Ltd | Alarm electronic timepiece |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3728855A (en) * | 1970-01-22 | 1973-04-24 | Gen Time Corp | Crystal controlled movement with frequency dividing circuitry |
CH280073A4 (en) * | 1973-02-27 | 1976-09-15 | ||
JPS52110662A (en) * | 1976-03-15 | 1977-09-16 | Seiko Instr & Electronics Ltd | Digital alarm clock |
US4068461A (en) * | 1976-04-15 | 1978-01-17 | Frontier Inc. | Digital electronic alarm watch |
-
1977
- 1977-12-21 CH CH1577577A patent/CH622160GA3/xx unknown
-
1978
- 1978-10-27 US US05/955,199 patent/US4244041A/en not_active Expired - Lifetime
- 1978-11-09 DE DE2848675A patent/DE2848675B2/en not_active Withdrawn
- 1978-12-12 JP JP15361778A patent/JPS54112687A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2848675B2 (en) | 1980-04-24 |
US4244041A (en) | 1981-01-06 |
JPS54112687A (en) | 1979-09-03 |
DE2848675A1 (en) | 1979-06-28 |
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