CH635719GA3 - - Google Patents
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- Publication number
- CH635719GA3 CH635719GA3 CH287778A CH287778A CH635719GA3 CH 635719G A3 CH635719G A3 CH 635719GA3 CH 287778 A CH287778 A CH 287778A CH 287778 A CH287778 A CH 287778A CH 635719G A3 CH635719G A3 CH 635719GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- pulse
- drive
- calendar display
- motor
- watch
- Prior art date
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
Abstract
In an analog electronic watch having a calendar display the power required during change of the calendar display, about 6 hours out of 24, is greater than at other times. In order to effect economy in power consumption, the pulse for driving the watch motor during the time other than the period in which the calendar display is being changed is only sufficient to drive the time indicating means. In case the motor fails to step when such pulse is applied, this is detected by a detecting circuit and a corrective drive pulse is applied to the motor so as to drive it.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2897777A JPS53114467A (en) | 1977-03-16 | 1977-03-16 | Electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
CH635719B CH635719B (en) | |
CH635719GA3 true CH635719GA3 (en) | 1983-04-29 |
Family
ID=12263468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH287778A CH635719B (en) | 1977-03-16 | 1978-03-16 | ELECTRONIC WATCH, ESPECIALLY ELECTRONIC BRACELET WATCH. |
Country Status (8)
Country | Link |
---|---|
US (1) | US4382691A (en) |
JP (1) | JPS53114467A (en) |
CH (1) | CH635719B (en) |
DE (1) | DE2733351C2 (en) |
FR (1) | FR2384289A1 (en) |
GB (1) | GB1592892A (en) |
HK (1) | HK18384A (en) |
SG (1) | SG65083G (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001130A1 (en) * | 1983-08-22 | 1985-03-14 | Michel Grosjean | Interlocking device for stepping motor |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53132381A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132385A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53136870A (en) * | 1977-04-23 | 1978-11-29 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132382A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132386A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS53132383A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch circuit |
JPS53132384A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS5477169A (en) * | 1977-12-02 | 1979-06-20 | Seiko Instr & Electronics Ltd | Electronic watch |
FR2459579A1 (en) * | 1979-06-21 | 1981-01-09 | Suisse Horlogerie | ADVANCE DETECTOR OF A STEP BY STEP MOTOR |
FR2461399A1 (en) * | 1979-07-09 | 1981-01-30 | Suisse Horlogerie | POSITION DETECTOR OF A STEP BY STEP MOTOR |
CH635722B (en) * | 1979-09-10 | Berney Sa Jean Claude | WATCHMAKING PART INCLUDING A STEP MOTOR DETECTION AND CONTROL CIRCUIT. | |
JPS58173479A (en) * | 1982-04-06 | 1983-10-12 | Seiko Instr & Electronics Ltd | Electronic watch |
JPS5913971A (en) * | 1982-07-15 | 1984-01-24 | Seiko Epson Corp | Analog electronic timepiece |
US4788527A (en) * | 1984-09-17 | 1988-11-29 | Johansson Fritz H | Apparatus and method for device control using a two conductor power line |
JPH01172850U (en) * | 1988-05-24 | 1989-12-07 | ||
JPH0231736U (en) * | 1988-08-25 | 1990-02-28 | ||
DE69621392T2 (en) * | 1995-09-20 | 2003-01-09 | Citizen Watch Co Ltd | Electronic clock |
JP3541601B2 (en) * | 1997-02-07 | 2004-07-14 | セイコーエプソン株式会社 | Control device for stepping motor, control method thereof, and timing device |
JP2001258227A (en) * | 2000-01-06 | 2001-09-21 | Seiko Epson Corp | Power generation equipment, clocking device and electronic equipment provided therewith, and adjusting method for cogging torque of power generation equipment |
JP2003344565A (en) * | 2002-05-29 | 2003-12-03 | Seiko Instruments Inc | Electronic clock |
JP4343549B2 (en) * | 2003-02-24 | 2009-10-14 | セイコーインスツル株式会社 | Step motor control device and electronic timepiece |
JP4236956B2 (en) * | 2003-02-24 | 2009-03-11 | セイコーインスツル株式会社 | Step motor control device and electronic timepiece |
JP2006226927A (en) * | 2005-02-21 | 2006-08-31 | Seiko Instruments Inc | Step motor drive unit and analog electronic timepiece |
US20070292794A1 (en) * | 2006-06-16 | 2007-12-20 | Xerox Corporation | Imaging members and method for stabilizing a charge transport layer of an imaging member |
US8111033B2 (en) * | 2008-06-17 | 2012-02-07 | Seiko Instruments Inc. | Stepping motor control circuit and analog electronic timepiece |
JP2010145106A (en) * | 2008-12-16 | 2010-07-01 | Seiko Instruments Inc | Stepping motor control circuit and analog electronic timepiece |
JP2011101576A (en) * | 2009-10-06 | 2011-05-19 | Seiko Instruments Inc | Stepping motor control circuit and analog electronic clock |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5319944B2 (en) * | 1971-09-25 | 1978-06-23 | ||
JPS5542356B2 (en) * | 1972-12-22 | 1980-10-30 | ||
JPS6024680B2 (en) * | 1973-03-07 | 1985-06-14 | セイコーインスツルメンツ株式会社 | Clock step motor drive circuit |
JPS5292560A (en) * | 1976-01-29 | 1977-08-04 | Seiko Instr & Electronics Ltd | Switch box drive pulse width control circuit for electronic clocks |
US4032827A (en) * | 1976-03-15 | 1977-06-28 | Timex Corporation | Driver circuit arrangement for a stepping motor |
JPS5345575A (en) * | 1976-10-06 | 1978-04-24 | Seiko Epson Corp | Electronic wristwatch |
JPS53132380A (en) * | 1977-04-23 | 1978-11-18 | Seiko Instr & Electronics Ltd | Electronic watch |
-
1977
- 1977-03-16 JP JP2897777A patent/JPS53114467A/en active Granted
- 1977-07-23 DE DE2733351A patent/DE2733351C2/en not_active Expired
- 1977-11-15 GB GB47462/77A patent/GB1592892A/en not_active Expired
-
1978
- 1978-03-15 FR FR7807430A patent/FR2384289A1/en active Granted
- 1978-03-16 CH CH287778A patent/CH635719B/en unknown
-
1980
- 1980-07-16 US US06/169,312 patent/US4382691A/en not_active Expired - Lifetime
-
1983
- 1983-11-01 SG SG65083A patent/SG65083G/en unknown
-
1984
- 1984-03-01 HK HK183/84A patent/HK18384A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001130A1 (en) * | 1983-08-22 | 1985-03-14 | Michel Grosjean | Interlocking device for stepping motor |
Also Published As
Publication number | Publication date |
---|---|
DE2733351C2 (en) | 1985-07-18 |
CH635719B (en) | |
GB1592892A (en) | 1981-07-08 |
JPS53114467A (en) | 1978-10-05 |
JPS6318148B2 (en) | 1988-04-16 |
HK18384A (en) | 1984-03-09 |
US4382691A (en) | 1983-05-10 |
FR2384289A1 (en) | 1978-10-13 |
SG65083G (en) | 1984-07-27 |
FR2384289B1 (en) | 1984-06-15 |
DE2733351A1 (en) | 1978-09-21 |
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