JPS57166584A - Electronic wrist watch with illuminating device - Google Patents

Electronic wrist watch with illuminating device

Info

Publication number
JPS57166584A
JPS57166584A JP5227281A JP5227281A JPS57166584A JP S57166584 A JPS57166584 A JP S57166584A JP 5227281 A JP5227281 A JP 5227281A JP 5227281 A JP5227281 A JP 5227281A JP S57166584 A JPS57166584 A JP S57166584A
Authority
JP
Japan
Prior art keywords
step motor
outputted
illuminating device
illumination
motor driving
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
JP5227281A
Other languages
Japanese (ja)
Inventor
Haruo Matsumoto
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 JP5227281A priority Critical patent/JPS57166584A/en
Publication of JPS57166584A publication Critical patent/JPS57166584A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces

Abstract

PURPOSE:To prevent the malfunction of a circuit due to a voltage drop during illumination by stopping the driving of a step motor during the illumination and correcting the stop time of the step motor after an illuminating device is turned off. CONSTITUTION:Normally, a signal obtained by processing the output of a quartz oscillating circuit 2 by frequency division 3 is inputted to a step motor driving circuit 4 to drive a step motor at intervals of one second. With a switch 8 closed, a lamp 6 turn on and control 9 is so exercised that a step motor driving signal is not outputted from the step motor driving circuit 4. After the switch 8 is opened, step motor driving pulses which should have been outputted during lamp illumination are outputted to the step motor 5 at a time.
JP5227281A 1981-04-07 1981-04-07 Electronic wrist watch with illuminating device Pending JPS57166584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5227281A JPS57166584A (en) 1981-04-07 1981-04-07 Electronic wrist watch with illuminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5227281A JPS57166584A (en) 1981-04-07 1981-04-07 Electronic wrist watch with illuminating device

Publications (1)

Publication Number Publication Date
JPS57166584A true JPS57166584A (en) 1982-10-14

Family

ID=12910137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5227281A Pending JPS57166584A (en) 1981-04-07 1981-04-07 Electronic wrist watch with illuminating device

Country Status (1)

Country Link
JP (1) JPS57166584A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028491A1 (en) * 1996-01-30 1997-08-07 Citizen Watch Co., Ltd. Electronic timepiece with power generating function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997028491A1 (en) * 1996-01-30 1997-08-07 Citizen Watch Co., Ltd. Electronic timepiece with power generating function

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