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JPS5717884A - Electronic timepiece - Google Patents

Electronic timepiece

Info

Publication number
JPS5717884A
JPS5717884A JP9285480A JP9285480A JPS5717884A JP S5717884 A JPS5717884 A JP S5717884A JP 9285480 A JP9285480 A JP 9285480A JP 9285480 A JP9285480 A JP 9285480A JP S5717884 A JPS5717884 A JP S5717884A
Authority
JP
Japan
Prior art keywords
pulse
driving
coil
switching pulse
circuit
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.)
Granted
Application number
JP9285480A
Other languages
Japanese (ja)
Other versions
JPS6363874B2 (en
Inventor
Fumio Sugano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP9285480A priority Critical patent/JPS5717884A/en
Publication of JPS5717884A publication Critical patent/JPS5717884A/en
Publication of JPS6363874B2 publication Critical patent/JPS6363874B2/ja
Granted legal-status Critical Current

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)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To prolong the driving time interval with minimum duty that can drive a step motor corresponding to the load by periodically changing the condition for selecting the output of circuit for induction voltage detection of the step motor coil. CONSTITUTION:By taking the time of aplying a driving signal to a coil 25 as an origin, a pulse of 0,25ms width having a different position in very 1ms up to 8ms- 12ms is outputted from the switching pulse generation circuit 14 and applied to a switching pulse selection circuit 15. The switching pulse selection circuit 15 is controlled by a counter 13 that is driven by a timer 12 outputting a reverse pulse in every 30sec., and periodically changes the signal selected by the switching pulse generation circuit 14. The voltage induced in a coil 25 is detected 26 by the timing of this selected signal and an up-down counter 33 that decides the driving pulse width is controlled in the dirction reducing the driving pulse width.
JP9285480A 1980-07-08 1980-07-08 Electronic timepiece Granted JPS5717884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9285480A JPS5717884A (en) 1980-07-08 1980-07-08 Electronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9285480A JPS5717884A (en) 1980-07-08 1980-07-08 Electronic timepiece

Publications (2)

Publication Number Publication Date
JPS5717884A true JPS5717884A (en) 1982-01-29
JPS6363874B2 JPS6363874B2 (en) 1988-12-08

Family

ID=14066005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9285480A Granted JPS5717884A (en) 1980-07-08 1980-07-08 Electronic timepiece

Country Status (1)

Country Link
JP (1) JPS5717884A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5739375A (en) * 1980-08-20 1982-03-04 Seiko Instr & Electronics Ltd Electronic timepiece
JPS58213279A (en) * 1982-06-04 1983-12-12 Seiko Epson Corp Analog electronic clock
JPS6373181A (en) * 1986-09-16 1988-04-02 Ricoh Elemex Corp Apparatus for detecting driving of motor in electronic timepiece
JPS63209213A (en) * 1987-02-25 1988-08-30 Seikosha Co Ltd Electromagnetic driving circuit
US5083877A (en) * 1990-04-18 1992-01-28 Pelikan, Inc. Tape feed control apparatus for a correction tape cassette for a typewriter
WO2000058793A1 (en) * 1999-03-31 2000-10-05 Seiko Epson Corporation Electronic apparatus and method for controlling electronic apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0227247U (en) * 1988-08-08 1990-02-22
JP5363269B2 (en) * 2008-12-25 2013-12-11 セイコーインスツル株式会社 Stepping motor control circuit and analog electronic timepiece

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5739375A (en) * 1980-08-20 1982-03-04 Seiko Instr & Electronics Ltd Electronic timepiece
JPS6363875B2 (en) * 1980-08-20 1988-12-08
JPS58213279A (en) * 1982-06-04 1983-12-12 Seiko Epson Corp Analog electronic clock
JPH0352589B2 (en) * 1982-06-04 1991-08-12 Seiko Epson Corp
JPS6373181A (en) * 1986-09-16 1988-04-02 Ricoh Elemex Corp Apparatus for detecting driving of motor in electronic timepiece
JPS63209213A (en) * 1987-02-25 1988-08-30 Seikosha Co Ltd Electromagnetic driving circuit
US5083877A (en) * 1990-04-18 1992-01-28 Pelikan, Inc. Tape feed control apparatus for a correction tape cassette for a typewriter
WO2000058793A1 (en) * 1999-03-31 2000-10-05 Seiko Epson Corporation Electronic apparatus and method for controlling electronic apparatus
US6476580B1 (en) 1999-03-31 2002-11-05 Seiko Epson Corporation Electronic apparatus and control method for electronic apparatus

Also Published As

Publication number Publication date
JPS6363874B2 (en) 1988-12-08

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