JPS5476265A - Motor revolution detecting system of electronic wristwatch - Google Patents

Motor revolution detecting system of electronic wristwatch

Info

Publication number
JPS5476265A
JPS5476265A JP14417077A JP14417077A JPS5476265A JP S5476265 A JPS5476265 A JP S5476265A JP 14417077 A JP14417077 A JP 14417077A JP 14417077 A JP14417077 A JP 14417077A JP S5476265 A JPS5476265 A JP S5476265A
Authority
JP
Japan
Prior art keywords
pulses
motor
detecting system
motor revolution
electronic wristwatch
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
JP14417077A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6113194B2 (enExample
Inventor
Akira Torisawa
Jun Ueda
Masaaki Bandai
Shuji Otawa
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 JP14417077A priority Critical patent/JPS5476265A/ja
Publication of JPS5476265A publication Critical patent/JPS5476265A/ja
Publication of JPS6113194B2 publication Critical patent/JPS6113194B2/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)
JP14417077A 1977-11-30 1977-11-30 Motor revolution detecting system of electronic wristwatch Granted JPS5476265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14417077A JPS5476265A (en) 1977-11-30 1977-11-30 Motor revolution detecting system of electronic wristwatch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14417077A JPS5476265A (en) 1977-11-30 1977-11-30 Motor revolution detecting system of electronic wristwatch

Publications (2)

Publication Number Publication Date
JPS5476265A true JPS5476265A (en) 1979-06-18
JPS6113194B2 JPS6113194B2 (enExample) 1986-04-11

Family

ID=15355821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14417077A Granted JPS5476265A (en) 1977-11-30 1977-11-30 Motor revolution detecting system of electronic wristwatch

Country Status (1)

Country Link
JP (1) JPS5476265A (enExample)

Also Published As

Publication number Publication date
JPS6113194B2 (enExample) 1986-04-11

Similar Documents

Publication Publication Date Title
US4208868A (en) Control device for a step-by-step motor
US4445784A (en) Electronic timepiece
FR2388328B1 (enExample)
ES450700A1 (es) Procedimiento y dispositivo para asegurar el mando periodicode al menos una funcion dependiente de uno o varios paramen-tos.
KR880014435A (ko) 회전자의 회전수 제어방법
JPS5476265A (en) Motor revolution detecting system of electronic wristwatch
GB1424387A (en) Method and apparatus for detecting main peaks in an electrical signal
JPS5658794A (en) Restarting device of digital control type brushless motor
JPS53144785A (en) Detector for number of revolution of engines
JPS54134667A (en) Drive control system of pulse motor for watch
JPS5345576A (en) Electronic wristwatch
JPS55103409A (en) Method and device for electron running distance
JPS54162417A (en) Low voltage detector circuit
SU928382A2 (ru) Печатающее устройство
JPS55104566A (en) Method for electronic ignition time control
JPS5740674A (en) Electronic watch
JPS5534856A (en) Voltage controlling method of inverter
JPS5678281A (en) Signal processing circuit
CH635722B (fr) Piece d'horlogerie comportant un circuit de detection et de controle pour moteur pas a pas.
SU930613A2 (ru) Генератор пилообразного напр жени
JPS55113159A (en) Capstan motor drive control system
JPS57203959A (en) Detecting method for velocity of synchronous motor
JPS5940206A (ja) 車輛用表示装置
JPS5491278A (en) Analog type electronic watch
JPS5524658A (en) Inspecting circuit for electronic watch