JPS5799029A - Input device for electronic watch - Google Patents
Input device for electronic watchInfo
- 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
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.
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)
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 |
-
1980
- 1980-12-12 JP JP55175616A patent/JPS5799029A/en active Pending
Cited By (3)
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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