JPS5380277A - Electronic wristwatch - Google Patents

Electronic wristwatch

Info

Publication number
JPS5380277A
JPS5380277A JP15672176A JP15672176A JPS5380277A JP S5380277 A JPS5380277 A JP S5380277A JP 15672176 A JP15672176 A JP 15672176A JP 15672176 A JP15672176 A JP 15672176A JP S5380277 A JPS5380277 A JP S5380277A
Authority
JP
Japan
Prior art keywords
electronic wristwatch
reduction
electric power
oscillation circuit
step motor
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
JP15672176A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6115379B2 (enrdf_load_stackoverflow
Inventor
Kiichi Kawamura
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 JP15672176A priority Critical patent/JPS5380277A/ja
Publication of JPS5380277A publication Critical patent/JPS5380277A/ja
Publication of JPS6115379B2 publication Critical patent/JPS6115379B2/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)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Stepping Motors (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
JP15672176A 1976-12-25 1976-12-25 Electronic wristwatch Granted JPS5380277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15672176A JPS5380277A (en) 1976-12-25 1976-12-25 Electronic wristwatch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15672176A JPS5380277A (en) 1976-12-25 1976-12-25 Electronic wristwatch

Publications (2)

Publication Number Publication Date
JPS5380277A true JPS5380277A (en) 1978-07-15
JPS6115379B2 JPS6115379B2 (enrdf_load_stackoverflow) 1986-04-23

Family

ID=15633874

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15672176A Granted JPS5380277A (en) 1976-12-25 1976-12-25 Electronic wristwatch

Country Status (1)

Country Link
JP (1) JPS5380277A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6115379B2 (enrdf_load_stackoverflow) 1986-04-23

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