GB2101367B - Improvements in or relating to stepping electric motor driven electronic timepieces. - Google Patents
Improvements in or relating to stepping electric motor driven electronic timepieces.Info
- Publication number
- GB2101367B GB2101367B GB08211495A GB8211495A GB2101367B GB 2101367 B GB2101367 B GB 2101367B GB 08211495 A GB08211495 A GB 08211495A GB 8211495 A GB8211495 A GB 8211495A GB 2101367 B GB2101367 B GB 2101367B
- Authority
- GB
- United Kingdom
- Prior art keywords
- detection
- path
- coil
- resistance
- motor driven
- 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
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)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6179081A JPS57175977A (en) | 1981-04-23 | 1981-04-23 | Analogue electronic watch |
JP56185849A JPS5886480A (ja) | 1981-11-19 | 1981-11-19 | アナログ電子時計 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2101367A GB2101367A (en) | 1983-01-12 |
GB2101367B true GB2101367B (en) | 1984-09-05 |
Family
ID=26402870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08211495A Expired GB2101367B (en) | 1981-04-23 | 1982-04-21 | Improvements in or relating to stepping electric motor driven electronic timepieces. |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH643426B (de) |
DE (1) | DE3214543A1 (de) |
GB (1) | GB2101367B (de) |
HK (1) | HK10387A (de) |
SG (1) | SG53286G (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994016365A1 (en) * | 1993-01-18 | 1994-07-21 | Seiko Instruments Inc. | Electronic timepiece |
JP3162652B2 (ja) * | 1997-04-25 | 2001-05-08 | セイコーインスツルメンツ株式会社 | 電子時計 |
JP4343549B2 (ja) * | 2003-02-24 | 2009-10-14 | セイコーインスツル株式会社 | ステップモータ制御装置及び電子時計 |
US11233477B2 (en) | 2018-06-07 | 2022-01-25 | Ab Mikroelektronik Gesellschaft Mit Beschraenkter Haftung | Method and system for controlling an electric motor and detecting a stall condition |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
JPS53132382A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS5643575A (en) * | 1979-09-18 | 1981-04-22 | Seiko Instr & Electronics Ltd | Electronic clock |
-
1982
- 1982-04-20 DE DE19823214543 patent/DE3214543A1/de active Granted
- 1982-04-21 GB GB08211495A patent/GB2101367B/en not_active Expired
- 1982-04-23 CH CH248782A patent/CH643426B/de unknown
-
1986
- 1986-06-12 SG SG532/86A patent/SG53286G/en unknown
-
1987
- 1987-01-28 HK HK103/87A patent/HK10387A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3214543A1 (de) | 1982-11-11 |
CH643426GA3 (de) | 1984-06-15 |
DE3214543C2 (de) | 1987-12-03 |
SG53286G (en) | 1988-02-19 |
CH643426B (de) | |
HK10387A (en) | 1987-02-06 |
GB2101367A (en) | 1983-01-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 20020420 |