JPS5421872A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5421872A
JPS5421872A JP8679077A JP8679077A JPS5421872A JP S5421872 A JPS5421872 A JP S5421872A JP 8679077 A JP8679077 A JP 8679077A JP 8679077 A JP8679077 A JP 8679077A JP S5421872 A JPS5421872 A JP S5421872A
Authority
JP
Japan
Prior art keywords
pulse width
electronic watch
narrow
effectiv
converting
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
JP8679077A
Other languages
Japanese (ja)
Other versions
JPS6313158B2 (en
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 JP8679077A priority Critical patent/JPS5421872A/en
Publication of JPS5421872A publication Critical patent/JPS5421872A/en
Publication of JPS6313158B2 publication Critical patent/JPS6313158B2/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 reduce power consumption while increasing the effectiv conversion efficiency and maintaining the reliability by driving through a pulse motor and making the pulse width slightly wider than the narrow pulse width right after converting from wide pulse width into narrow pulse width.
JP8679077A 1977-07-20 1977-07-20 Electronic watch Granted JPS5421872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8679077A JPS5421872A (en) 1977-07-20 1977-07-20 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8679077A JPS5421872A (en) 1977-07-20 1977-07-20 Electronic watch

Publications (2)

Publication Number Publication Date
JPS5421872A true JPS5421872A (en) 1979-02-19
JPS6313158B2 JPS6313158B2 (en) 1988-03-24

Family

ID=13896556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8679077A Granted JPS5421872A (en) 1977-07-20 1977-07-20 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5421872A (en)

Also Published As

Publication number Publication date
JPS6313158B2 (en) 1988-03-24

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