JPS5539016A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5539016A
JPS5539016A JP11200878A JP11200878A JPS5539016A JP S5539016 A JPS5539016 A JP S5539016A JP 11200878 A JP11200878 A JP 11200878A JP 11200878 A JP11200878 A JP 11200878A JP S5539016 A JPS5539016 A JP S5539016A
Authority
JP
Japan
Prior art keywords
gates
coil
detector
resistor
rotor
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
JP11200878A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6138423B2 (enrdf_load_stackoverflow
Inventor
Jun Ueda
Akira Torisawa
Shuji Otawa
Masaaki Bandai
Masaharu Shida
Katsuhiko Sato
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 Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP11200878A priority Critical patent/JPS5539016A/ja
Publication of JPS5539016A publication Critical patent/JPS5539016A/ja
Publication of JPS6138423B2 publication Critical patent/JPS6138423B2/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)
JP11200878A 1978-09-12 1978-09-12 Electronic watch Granted JPS5539016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11200878A JPS5539016A (en) 1978-09-12 1978-09-12 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11200878A JPS5539016A (en) 1978-09-12 1978-09-12 Electronic watch

Publications (2)

Publication Number Publication Date
JPS5539016A true JPS5539016A (en) 1980-03-18
JPS6138423B2 JPS6138423B2 (enrdf_load_stackoverflow) 1986-08-29

Family

ID=14575645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11200878A Granted JPS5539016A (en) 1978-09-12 1978-09-12 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5539016A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158978A (en) * 1980-05-13 1981-12-08 Citizen Watch Co Ltd Electronic watch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119268A (en) * 1976-03-30 1977-10-06 Seiko Epson Corp Step motor for electronic wristwatch
JPS5372112A (en) * 1976-12-08 1978-06-27 Seiko Instr & Electronics Ltd Drive circuit for step motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119268A (en) * 1976-03-30 1977-10-06 Seiko Epson Corp Step motor for electronic wristwatch
JPS5372112A (en) * 1976-12-08 1978-06-27 Seiko Instr & Electronics Ltd Drive circuit for step motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158978A (en) * 1980-05-13 1981-12-08 Citizen Watch Co Ltd Electronic watch

Also Published As

Publication number Publication date
JPS6138423B2 (enrdf_load_stackoverflow) 1986-08-29

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