JPS5567829A - Keyboard input device - Google Patents
Keyboard input deviceInfo
- Publication number
- JPS5567829A JPS5567829A JP14177178A JP14177178A JPS5567829A JP S5567829 A JPS5567829 A JP S5567829A JP 14177178 A JP14177178 A JP 14177178A JP 14177178 A JP14177178 A JP 14177178A JP S5567829 A JPS5567829 A JP S5567829A
- Authority
- JP
- Japan
- Prior art keywords
- scanning
- circuit
- pressing operation
- detected
- key switch
- 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.)
- Granted
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To enhance the output reliability for the data signal by delivering the operation signal in response to the key switch in case the pressing operation is detected continuously and in the same frequency as the scanning frequency via the scanning circuit and the scanning control unit.
CONSTITUTION: Scanning circuit 2 detects each pressing operation in the prescribed sequence for plural number of key switches arrayed on keyboard 1. And when the pressing operation is detected by circuit 2 for an optional key switch, scanning control unit 3 gives alteration to the scanning sequence of circuit 2 to give the second scanning or the scanning of several times to the key switch to which the pressing operation is detected. Here outout control circuit 5 delivers the operation signal in response to the key switch to which the pressing operation is detected by circuit 2 and unit 3 continuously and in the same frequency as the scanning frequency. In this way, the reliability can be increased for the output of the data signal.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14177178A JPS5567829A (en) | 1978-11-16 | 1978-11-16 | Keyboard input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14177178A JPS5567829A (en) | 1978-11-16 | 1978-11-16 | Keyboard input device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5567829A true JPS5567829A (en) | 1980-05-22 |
JPS5752611B2 JPS5752611B2 (en) | 1982-11-09 |
Family
ID=15299786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14177178A Granted JPS5567829A (en) | 1978-11-16 | 1978-11-16 | Keyboard input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5567829A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150027A (en) * | 1981-03-11 | 1982-09-16 | Omron Tateisi Electronics Co | Keyboard encoder |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5251828A (en) * | 1975-10-23 | 1977-04-26 | Omron Tateisi Electronics Co | Key input discriminating unit |
-
1978
- 1978-11-16 JP JP14177178A patent/JPS5567829A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5251828A (en) * | 1975-10-23 | 1977-04-26 | Omron Tateisi Electronics Co | Key input discriminating unit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57150027A (en) * | 1981-03-11 | 1982-09-16 | Omron Tateisi Electronics Co | Keyboard encoder |
JPS6135567B2 (en) * | 1981-03-11 | 1986-08-13 | Omron Tateisi Electronics Co |
Also Published As
Publication number | Publication date |
---|---|
JPS5752611B2 (en) | 1982-11-09 |
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