JPS5374468A - Electronic watch - Google Patents

Electronic watch

Info

Publication number
JPS5374468A
JPS5374468A JP14969876A JP14969876A JPS5374468A JP S5374468 A JPS5374468 A JP S5374468A JP 14969876 A JP14969876 A JP 14969876A JP 14969876 A JP14969876 A JP 14969876A JP S5374468 A JPS5374468 A JP S5374468A
Authority
JP
Japan
Prior art keywords
electronic watch
interrupted
power
clock system
type clock
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
JP14969876A
Other languages
Japanese (ja)
Inventor
Tadashi Funakubo
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14969876A priority Critical patent/JPS5374468A/en
Publication of JPS5374468A publication Critical patent/JPS5374468A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/10—Arrangements for supplying back-up power

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To reduce battery exchange and improve reliability by providing the combination of two kinds of clock systems so as to use an a.c. type clock system while power is not interrupted and use a self-excitation type clock system when power is interrupted.
JP14969876A 1976-12-15 1976-12-15 Electronic watch Pending JPS5374468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14969876A JPS5374468A (en) 1976-12-15 1976-12-15 Electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14969876A JPS5374468A (en) 1976-12-15 1976-12-15 Electronic watch

Publications (1)

Publication Number Publication Date
JPS5374468A true JPS5374468A (en) 1978-07-01

Family

ID=15480851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14969876A Pending JPS5374468A (en) 1976-12-15 1976-12-15 Electronic watch

Country Status (1)

Country Link
JP (1) JPS5374468A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62298790A (en) * 1986-06-19 1987-12-25 Sanyo Electric Co Ltd Timepiece display unit
JPH0458189A (en) * 1990-06-27 1992-02-25 Sanyo Electric Co Ltd Digital timer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62298790A (en) * 1986-06-19 1987-12-25 Sanyo Electric Co Ltd Timepiece display unit
JPH0458189A (en) * 1990-06-27 1992-02-25 Sanyo Electric Co Ltd Digital timer

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