JPS57137873A - Analogue electronic watch - Google Patents

Analogue electronic watch

Info

Publication number
JPS57137873A
JPS57137873A JP2338581A JP2338581A JPS57137873A JP S57137873 A JPS57137873 A JP S57137873A JP 2338581 A JP2338581 A JP 2338581A JP 2338581 A JP2338581 A JP 2338581A JP S57137873 A JPS57137873 A JP S57137873A
Authority
JP
Japan
Prior art keywords
motor
prescribed period
driving signal
reset
releasing
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
JP2338581A
Other languages
Japanese (ja)
Inventor
Motoyuki Fujimori
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 JP2338581A priority Critical patent/JPS57137873A/en
Publication of JPS57137873A publication Critical patent/JPS57137873A/en
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To omit the regulating structure and prevent the drive miss of a motor, by generating the first driving signal before a prescribed period and generating following driving signals at the prescribed period after releasing the reset. CONSTITUTION:After releasing the reset after setting hands, a correction driving pulse 12a is generated near the about half period of the first driving signal for a motor which is generated at a prescribed period. Though the drive miss occurs if this correction driving pulse 12a does not match the polarity of the motor, the display lag does not occur because the motor is driven by the next driving signal of the prescribed period. Though hands go too fast by components of one signal, this probability is 50%, and it does not interfere with the practical use.
JP2338581A 1981-02-19 1981-02-19 Analogue electronic watch Pending JPS57137873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2338581A JPS57137873A (en) 1981-02-19 1981-02-19 Analogue electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2338581A JPS57137873A (en) 1981-02-19 1981-02-19 Analogue electronic watch

Publications (1)

Publication Number Publication Date
JPS57137873A true JPS57137873A (en) 1982-08-25

Family

ID=12109049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2338581A Pending JPS57137873A (en) 1981-02-19 1981-02-19 Analogue electronic watch

Country Status (1)

Country Link
JP (1) JPS57137873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0445990U (en) * 1990-08-17 1992-04-20

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933680A (en) * 1972-07-25 1974-03-28
JPS5410774A (en) * 1977-06-27 1979-01-26 Seiko Instr & Electronics Ltd Resetting system for electronic watch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4933680A (en) * 1972-07-25 1974-03-28
JPS5410774A (en) * 1977-06-27 1979-01-26 Seiko Instr & Electronics Ltd Resetting system for electronic watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0445990U (en) * 1990-08-17 1992-04-20

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