JPS53133066A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS53133066A
JPS53133066A JP4766777A JP4766777A JPS53133066A JP S53133066 A JPS53133066 A JP S53133066A JP 4766777 A JP4766777 A JP 4766777A JP 4766777 A JP4766777 A JP 4766777A JP S53133066 A JPS53133066 A JP S53133066A
Authority
JP
Japan
Prior art keywords
electronic watch
pulses
rotor
detect
providing
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
JP4766777A
Other languages
English (en)
Japanese (ja)
Inventor
Norio Takahashi
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 JP4766777A priority Critical patent/JPS53133066A/ja
Priority to DE19782817565 priority patent/DE2817565A1/de
Priority to FR7812043A priority patent/FR2389168A1/fr
Priority to CH447578A priority patent/CH630224GA3/fr
Publication of JPS53133066A publication Critical patent/JPS53133066A/ja
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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Stepping Motors (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
JP4766777A 1977-04-25 1977-04-25 Electronic watch Pending JPS53133066A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4766777A JPS53133066A (en) 1977-04-25 1977-04-25 Electronic watch
DE19782817565 DE2817565A1 (de) 1977-04-25 1978-04-21 Elektronische uhr
FR7812043A FR2389168A1 (fr) 1977-04-25 1978-04-24 Mouvement d'horlogerie electronique
CH447578A CH630224GA3 (en) 1977-04-25 1978-04-25 Drive circuit for controlling a stepper motor of an electronic timepiece, especially an electronic wristwatch, in the reverse direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4766777A JPS53133066A (en) 1977-04-25 1977-04-25 Electronic watch

Publications (1)

Publication Number Publication Date
JPS53133066A true JPS53133066A (en) 1978-11-20

Family

ID=12781603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4766777A Pending JPS53133066A (en) 1977-04-25 1977-04-25 Electronic watch

Country Status (4)

Country Link
JP (1) JPS53133066A (enrdf_load_stackoverflow)
CH (1) CH630224GA3 (enrdf_load_stackoverflow)
DE (1) DE2817565A1 (enrdf_load_stackoverflow)
FR (1) FR2389168A1 (enrdf_load_stackoverflow)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740759B2 (enrdf_load_stackoverflow) * 1973-07-17 1982-08-30
JPS51101577A (ja) * 1975-03-04 1976-09-08 Seiko Instr & Electronics Denshidokeisochinoshuseisochi
JPS51126880A (en) * 1975-04-26 1976-11-05 Seiko Instr & Electronics Ltd Automatic control circuit of pulse width
JPS5312669A (en) * 1976-07-21 1978-02-04 Seiko Instr & Electronics Ltd Hands reversing device of electronic watch

Also Published As

Publication number Publication date
CH630224B (fr)
FR2389168B1 (enrdf_load_stackoverflow) 1983-10-21
FR2389168A1 (fr) 1978-11-24
DE2817565A1 (de) 1978-11-02
CH630224GA3 (en) 1982-06-15

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