JPS5421873A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5421873A
JPS5421873A JP8679177A JP8679177A JPS5421873A JP S5421873 A JPS5421873 A JP S5421873A JP 8679177 A JP8679177 A JP 8679177A JP 8679177 A JP8679177 A JP 8679177A JP S5421873 A JPS5421873 A JP S5421873A
Authority
JP
Japan
Prior art keywords
pulse
electronic watch
polarity
judged
changed
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.)
Pending
Application number
JP8679177A
Other languages
Japanese (ja)
Inventor
Sakio Okazaki
Kiichi Kawamura
Minoru Hosokawa
Hiroshi Ishii
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP8679177A priority Critical patent/JPS5421873A/en
Publication of JPS5421873A publication Critical patent/JPS5421873A/en
Pending 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)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To increase the effective conversion efficiency and achieve stable operation and low power consumption by driving a pulse motor with narrow pulse and applying wide pulse as correction signal at large load ar when the polarity is judged to be changed.
JP8679177A 1977-07-20 1977-07-20 Electronic watch Pending JPS5421873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8679177A JPS5421873A (en) 1977-07-20 1977-07-20 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8679177A JPS5421873A (en) 1977-07-20 1977-07-20 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5421873A true JPS5421873A (en) 1979-02-19

Family

ID=13896585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8679177A Pending JPS5421873A (en) 1977-07-20 1977-07-20 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5421873A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619399A (en) * 1979-07-09 1981-02-24 Suisse Horlogerie Method of feeding single phase stepping motor for watch
JPH0214235A (en) * 1988-07-01 1990-01-18 Shin Etsu Chem Co Ltd Highly water-absorbing resin and production thereof
JP2021083231A (en) * 2019-11-20 2021-05-27 カシオ計算機株式会社 Pointer device, electronic clock, control method of pointer device, and program
JP2021136479A (en) * 2020-02-25 2021-09-13 カシオ計算機株式会社 Electronic apparatus, determination system, determination method, and program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619399A (en) * 1979-07-09 1981-02-24 Suisse Horlogerie Method of feeding single phase stepping motor for watch
JPS6240960B2 (en) * 1979-07-09 1987-08-31 Suisehooru Eru Ind Hoorogeru Maneejimento Saabisesu Sa Soc
JPH0214235A (en) * 1988-07-01 1990-01-18 Shin Etsu Chem Co Ltd Highly water-absorbing resin and production thereof
JP2021083231A (en) * 2019-11-20 2021-05-27 カシオ計算機株式会社 Pointer device, electronic clock, control method of pointer device, and program
JP2021136479A (en) * 2020-02-25 2021-09-13 カシオ計算機株式会社 Electronic apparatus, determination system, determination method, and program

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