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JPS55138683A - Switch input generating circuit for electronic watch - Google Patents

Switch input generating circuit for electronic watch

Info

Publication number
JPS55138683A
JPS55138683A JP4602579A JP4602579A JPS55138683A JP S55138683 A JPS55138683 A JP S55138683A JP 4602579 A JP4602579 A JP 4602579A JP 4602579 A JP4602579 A JP 4602579A JP S55138683 A JPS55138683 A JP S55138683A
Authority
JP
Japan
Prior art keywords
oscillator
switch input
oscillation
switching
output
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
JP4602579A
Other languages
Japanese (ja)
Inventor
Kazutoshi Ichise
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.)
Ricoh Elemex Corp
Ricoh Co Ltd
Original Assignee
Ricoh Elemex Corp
Ricoh Co 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 Ricoh Elemex Corp, Ricoh Co Ltd filed Critical Ricoh Elemex Corp
Priority to JP4602579A priority Critical patent/JPS55138683A/en
Publication of JPS55138683A publication Critical patent/JPS55138683A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/08—Touch switches specially adapted for time-pieces

Landscapes

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

Abstract

PURPOSE:To improve the sensitivity of switching by connecting the opposing electrodes buried in the watch case to the feedback circuit of an oscillator as a capacity element so that the signal necessary for switching is obtained from the oscillation output. CONSTITUTION:When an oscillator 1 is set to the state just before oscillation by adjusting the trimmer condenser 2 for adjusting oscillation by connected to the feedback circuit 1b of the oscillator 1 and the finger or the like is contacted to the touch part 3c' of the auxiliary electrode 3c of a capacity element 3, the electrostatic capacity between the opposing electrodes 3a, 3b of the capacity element 3 buried in an electrical insulator 5 decrease considerably and the oscillator 1 begins to oscillate. This oscillation output is waveform-shaped 6 and the switch input corresponding to a binary signal is output. Since this enables the signal necessary for switching input to be obtained from the oscillation output, the sensitivity at the ON, OFF may be improved and the effective and stable switch input obtained.
JP4602579A 1979-04-17 1979-04-17 Switch input generating circuit for electronic watch Pending JPS55138683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4602579A JPS55138683A (en) 1979-04-17 1979-04-17 Switch input generating circuit for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4602579A JPS55138683A (en) 1979-04-17 1979-04-17 Switch input generating circuit for electronic watch

Publications (1)

Publication Number Publication Date
JPS55138683A true JPS55138683A (en) 1980-10-29

Family

ID=12735500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4602579A Pending JPS55138683A (en) 1979-04-17 1979-04-17 Switch input generating circuit for electronic watch

Country Status (1)

Country Link
JP (1) JPS55138683A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742948U (en) * 1993-12-29 1995-08-11 リズム時計工業株式会社 Alarm clock with snooze
EP0674247A1 (en) * 1994-03-24 1995-09-27 Asulab S.A. Clock with manual control

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155263A (en) * 1974-06-04 1975-12-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50155263A (en) * 1974-06-04 1975-12-15

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742948U (en) * 1993-12-29 1995-08-11 リズム時計工業株式会社 Alarm clock with snooze
EP0674247A1 (en) * 1994-03-24 1995-09-27 Asulab S.A. Clock with manual control
FR2717917A1 (en) * 1994-03-24 1995-09-29 Asulab Sa Watch having a manual control device.

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