JPS5753679A - Integrated circuit for timepiece - Google Patents

Integrated circuit for timepiece

Info

Publication number
JPS5753679A
JPS5753679A JP12879480A JP12879480A JPS5753679A JP S5753679 A JPS5753679 A JP S5753679A JP 12879480 A JP12879480 A JP 12879480A JP 12879480 A JP12879480 A JP 12879480A JP S5753679 A JPS5753679 A JP S5753679A
Authority
JP
Japan
Prior art keywords
driving
timepiece
boosted voltage
area
circuit
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
JP12879480A
Other languages
Japanese (ja)
Inventor
Masuo Tsuji
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 JP12879480A priority Critical patent/JPS5753679A/en
Priority to EP80304563A priority patent/EP0032020B1/en
Priority to DE8080304563T priority patent/DE3070354D1/en
Priority to US06/219,747 priority patent/US4392216A/en
Publication of JPS5753679A publication Critical patent/JPS5753679A/en
Priority to HK862/87A priority patent/HK86287A/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

Abstract

PURPOSE:To reduce the area of a driving transistor (TR) driving a step motor, by controlling the gate of the driving TR by the boosted voltage of an internal boosting circuit as a substitute for an external supply voltage. CONSTITUTION:A hybrid timepiece having the functions of both an analog and a digital timepiece has an area operating with an external supply voltage and that operating with the boosted voltage of an internal boosting circuit. An interface circuit 24 is provided behind the output control circuit 3 of the hybrid timepiece, and the gate of the driving TR of a driving circuit 4 for a step motor is controlled by boosted voltage of the internal boosting circuit 11. Therefore, the area of operating with boosted voltage is as shown by a broken line 25. Thus, the gate of the driving TR is controlled by the boosted voltage to decrease the amplification factor of the necessary TR, so the area of the driving TR is reduced. In addition, this method is not limited to the hybrid timepiece.
JP12879480A 1979-12-26 1980-09-17 Integrated circuit for timepiece Pending JPS5753679A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP12879480A JPS5753679A (en) 1980-09-17 1980-09-17 Integrated circuit for timepiece
EP80304563A EP0032020B1 (en) 1979-12-26 1980-12-17 Integrated circuit for a timepiece
DE8080304563T DE3070354D1 (en) 1979-12-26 1980-12-17 Integrated circuit for a timepiece
US06/219,747 US4392216A (en) 1979-12-26 1980-12-24 Integrated circuit for timepiece
HK862/87A HK86287A (en) 1979-12-26 1987-11-19 Integrated circuit for a timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12879480A JPS5753679A (en) 1980-09-17 1980-09-17 Integrated circuit for timepiece

Publications (1)

Publication Number Publication Date
JPS5753679A true JPS5753679A (en) 1982-03-30

Family

ID=14993601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12879480A Pending JPS5753679A (en) 1979-12-26 1980-09-17 Integrated circuit for timepiece

Country Status (1)

Country Link
JP (1) JPS5753679A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012249473A (en) * 2011-05-30 2012-12-13 Iai:Kk Control device, actuator system and control method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5480163A (en) * 1977-12-09 1979-06-26 Citizen Watch Co Ltd Electronic watch
JPS54127357A (en) * 1978-03-25 1979-10-03 Nec Corp Integrated circuit device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5480163A (en) * 1977-12-09 1979-06-26 Citizen Watch Co Ltd Electronic watch
JPS54127357A (en) * 1978-03-25 1979-10-03 Nec Corp Integrated circuit device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012249473A (en) * 2011-05-30 2012-12-13 Iai:Kk Control device, actuator system and control method

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