JPS5799029A - Input device for electronic watch - Google Patents

Input device for electronic watch

Info

Publication number
JPS5799029A
JPS5799029A JP55175616A JP17561680A JPS5799029A JP S5799029 A JPS5799029 A JP S5799029A JP 55175616 A JP55175616 A JP 55175616A JP 17561680 A JP17561680 A JP 17561680A JP S5799029 A JPS5799029 A JP S5799029A
Authority
JP
Japan
Prior art keywords
switch
capacitor
output
state
rectangular wave
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
JP55175616A
Other languages
Japanese (ja)
Inventor
Tomoki Murakami
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.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch 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 Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP55175616A priority Critical patent/JPS5799029A/en
Publication of JPS5799029A publication Critical patent/JPS5799029A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass

Landscapes

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

Abstract

PURPOSE:To enable the connection of a switch block and a main body with two wires, by providing different resistance value or capacitance value to each of a plurality of switches according to the operating state of each switch. CONSTITUTION:When a switch SW1 is set to a make-state, a rectangular wave applied to a terminal A charges a capacitor 4 via a resistor R1. A capacitor 4 is discharged via a transmission gate driven with a signal inverting the said rectangular wave. When the charging voltage of the capacitor 4 exceeds a specified value or more, a transistor (TR)7 generates an output, the width of this output is discriminated at a discrimination circuit 8 to recognize which switch is turned to a make-state. That is, this uses the principles that the output width of the TR7 is changed by resistors R1-R3.
JP55175616A 1980-12-12 1980-12-12 Input device for electronic watch Pending JPS5799029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55175616A JPS5799029A (en) 1980-12-12 1980-12-12 Input device for electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55175616A JPS5799029A (en) 1980-12-12 1980-12-12 Input device for electronic watch

Publications (1)

Publication Number Publication Date
JPS5799029A true JPS5799029A (en) 1982-06-19

Family

ID=15999193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55175616A Pending JPS5799029A (en) 1980-12-12 1980-12-12 Input device for electronic watch

Country Status (1)

Country Link
JP (1) JPS5799029A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408199A1 (en) * 1983-03-19 1984-09-20 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Timer
US5059837A (en) * 1989-02-13 1991-10-22 Ibm Data dependent variable time delay circuit
US5182468A (en) * 1989-02-13 1993-01-26 Ibm Corporation Current limiting clamp circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408199A1 (en) * 1983-03-19 1984-09-20 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Timer
US5059837A (en) * 1989-02-13 1991-10-22 Ibm Data dependent variable time delay circuit
US5182468A (en) * 1989-02-13 1993-01-26 Ibm Corporation Current limiting clamp circuit

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