JPS5319944B2 - - Google Patents
Info
- Publication number
- JPS5319944B2 JPS5319944B2 JP7475971A JP7475971A JPS5319944B2 JP S5319944 B2 JPS5319944 B2 JP S5319944B2 JP 7475971 A JP7475971 A JP 7475971A JP 7475971 A JP7475971 A JP 7475971A JP S5319944 B2 JPS5319944 B2 JP S5319944B2
- Authority
- JP
- Japan
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7475971A JPS5319944B2 (bg) | 1971-09-25 | 1971-09-25 | |
US00291531A US3812670A (en) | 1971-09-25 | 1972-09-25 | Converter drive circuit in an electronic timepiece |
GB4426372A GB1355892A (en) | 1971-09-25 | 1972-09-25 | Drive circuit for an electronic timepiece |
DE2247210A DE2247210C2 (de) | 1971-09-25 | 1972-09-25 | Elektronisches Uhrwerk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7475971A JPS5319944B2 (bg) | 1971-09-25 | 1971-09-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS4841772A JPS4841772A (bg) | 1973-06-18 |
JPS5319944B2 true JPS5319944B2 (bg) | 1978-06-23 |
Family
ID=13556511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7475971A Expired JPS5319944B2 (bg) | 1971-09-25 | 1971-09-25 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3812670A (bg) |
JP (1) | JPS5319944B2 (bg) |
DE (1) | DE2247210C2 (bg) |
GB (1) | GB1355892A (bg) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5653154Y2 (bg) * | 1977-04-25 | 1981-12-11 |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5542356B2 (bg) * | 1972-12-22 | 1980-10-30 | ||
CH581346B5 (bg) * | 1973-07-19 | 1976-10-29 | Ebauches Sa | |
JPS5031864A (bg) * | 1973-07-20 | 1975-03-28 | ||
ES430659A1 (es) * | 1973-10-24 | 1976-11-01 | Jauch | Un procedimiento y un dispositivo para la sincronizacion deun sistema oscilante accionado por un acumulador mecanico deenergia, en especial de un reloj. |
JPS587190B2 (ja) * | 1973-12-05 | 1983-02-08 | セイコーエプソン株式会社 | スイシヨウドケイ |
GB1488914A (en) * | 1973-12-19 | 1977-10-19 | Citizen Watch Co Ltd | Electronic timepiece |
US4162608A (en) * | 1974-06-05 | 1979-07-31 | Kabushiki Kaisha Suwa Seikosha | Electronic timepiece frequency regulating circuit |
JPS5181165A (bg) * | 1975-01-13 | 1976-07-15 | Suwa Seikosha Kk | |
JPS5292560A (en) * | 1976-01-29 | 1977-08-04 | Seiko Instr & Electronics Ltd | Switch box drive pulse width control circuit for electronic clocks |
JPS5915533B2 (ja) * | 1976-08-20 | 1984-04-10 | シチズン時計株式会社 | 電子装置の駆動回路 |
JPS5345575A (en) * | 1976-10-06 | 1978-04-24 | Seiko Epson Corp | Electronic wristwatch |
US4104860A (en) * | 1976-12-27 | 1978-08-08 | Solid State Scientific Inc. | High speed dynamic flip-flop system |
CH635973B (fr) * | 1977-01-19 | Suwa Seikosha Kk | Circuit de commande pour un transducteur electromecanique d'une montre, notamment d'une montre-bracelet electronique. | |
US4219999A (en) * | 1977-03-03 | 1980-09-02 | Citizen Watch Company, Limited | Electronic timepiece equipped with battery life display |
JPS53114467A (en) * | 1977-03-16 | 1978-10-05 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132386A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132381A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS5428176A (en) * | 1977-08-04 | 1979-03-02 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS5477169A (en) * | 1977-12-02 | 1979-06-20 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS54156676A (en) * | 1978-05-31 | 1979-12-10 | Seiko Epson Corp | Wristwatch |
CH616045B (fr) * | 1978-06-20 | Ebauches Sa | Procede pour reduire la consommation d'une piece d'horlogerie electronique et piece d'horlogerie electronique mettant en oeuvre ce procede. | |
US4283783A (en) * | 1978-11-28 | 1981-08-11 | Citizen Watch Company Limited | Drive control system for stepping motor |
CH647383GA3 (bg) * | 1981-02-04 | 1985-01-31 | ||
JPS5860292U (ja) * | 1982-07-22 | 1983-04-23 | セイコーエプソン株式会社 | アラ−ム付電子時計 |
JPS63217288A (ja) * | 1987-03-06 | 1988-09-09 | Seikosha Co Ltd | 電磁駆動回路 |
JPS6333196U (bg) * | 1987-04-10 | 1988-03-03 | ||
JPH02222859A (ja) * | 1990-01-11 | 1990-09-05 | Seiko Epson Corp | アラーム付電子機器 |
US5550795A (en) * | 1993-01-18 | 1996-08-27 | Seiko Instruments Inc. | Electronic timepiece and a method of driving a stepping motor of electronic timepiece |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370414A (en) * | 1965-06-22 | 1968-02-27 | Benrus Watch Company Inc | Electronic timepiece |
JPS4943989B1 (bg) * | 1968-07-19 | 1974-11-26 | ||
DE1809223B2 (de) * | 1968-11-15 | 1972-11-30 | Gebrüder Junghans GmbH, 7230 Schramberg | Armbanduhr mit einem piezoelektrischen kristall als zeithaltendem schwinger |
FR2060185B2 (bg) * | 1969-09-10 | 1974-03-15 | Lavet Marius | |
GB1279058A (en) * | 1970-01-28 | 1972-06-21 | Seiko Instr & Electronics | Timepiece |
US3699762A (en) * | 1971-04-05 | 1972-10-24 | Timex Corp | Synchronized contact watch |
-
1971
- 1971-09-25 JP JP7475971A patent/JPS5319944B2/ja not_active Expired
-
1972
- 1972-09-25 GB GB4426372A patent/GB1355892A/en not_active Expired
- 1972-09-25 DE DE2247210A patent/DE2247210C2/de not_active Expired
- 1972-09-25 US US00291531A patent/US3812670A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5653154Y2 (bg) * | 1977-04-25 | 1981-12-11 |
Also Published As
Publication number | Publication date |
---|---|
DE2247210C2 (de) | 1983-01-20 |
JPS4841772A (bg) | 1973-06-18 |
GB1355892A (en) | 1974-06-05 |
DE2247210A1 (de) | 1973-03-29 |
US3812670A (en) | 1974-05-28 |