TW243505B - Device for keyboard scanning and detection of additional input and the process - Google Patents
Device for keyboard scanning and detection of additional input and the processInfo
- Publication number
- TW243505B TW243505B TW82110494A TW82110494A TW243505B TW 243505 B TW243505 B TW 243505B TW 82110494 A TW82110494 A TW 82110494A TW 82110494 A TW82110494 A TW 82110494A TW 243505 B TW243505 B TW 243505B
- Authority
- TW
- Taiwan
- Prior art keywords
- ports
- detection
- keyboard
- column
- resistance
- Prior art date
Links
Abstract
A process for keyboard scanning and detection of additional input, which uses existing I/O ports to detect whether there is resistance at the row I/O ports and column I/O ports in order to enhance the input performance; the process comprises the following steps: (i) when the keyboard is punched, pausing operation of the keyboard scanning circuit for a period of time; (ii) during the pausing time, detecting whether the row I/O ports and the column I/O ports are connected through resistance, and inputting the detection result into a memory device in order to determine whether row I/O ports and column I/O ports are connected through resistance; (iii) stopping the detection on whether row I/O ports and column I/O ports are connected through resistance, and continuing the keyboard circuit for keyboard scanning.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW82110494A TW243505B (en) | 1993-12-10 | 1993-12-10 | Device for keyboard scanning and detection of additional input and the process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW82110494A TW243505B (en) | 1993-12-10 | 1993-12-10 | Device for keyboard scanning and detection of additional input and the process |
Publications (1)
Publication Number | Publication Date |
---|---|
TW243505B true TW243505B (en) | 1995-03-21 |
Family
ID=51401011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW82110494A TW243505B (en) | 1993-12-10 | 1993-12-10 | Device for keyboard scanning and detection of additional input and the process |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW243505B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI506962B (en) * | 2009-08-28 | 2015-11-01 | Hon Hai Prec Ind Co Ltd | Keyboard, keyboard scanning circuit and method |
TWI777118B (en) * | 2020-01-06 | 2022-09-11 | 聯陽半導體股份有限公司 | Restart control device and restart control method |
-
1993
- 1993-12-10 TW TW82110494A patent/TW243505B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI506962B (en) * | 2009-08-28 | 2015-11-01 | Hon Hai Prec Ind Co Ltd | Keyboard, keyboard scanning circuit and method |
TWI777118B (en) * | 2020-01-06 | 2022-09-11 | 聯陽半導體股份有限公司 | Restart control device and restart control method |
US11467847B2 (en) | 2020-01-06 | 2022-10-11 | Ite Tech. Inc. | Restart control device and restart control method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR920016935A (en) | Integrated keyboard and pointing mechanism system with automatic mode switching | |
KR900000095B1 (en) | Key output method of keyboard | |
MX9705576A (en) | Method and apparatus for detecting key actuations. | |
TW345634B (en) | Information processing system | |
TW243505B (en) | Device for keyboard scanning and detection of additional input and the process | |
JPS5567828A (en) | Keyboard input device | |
TW376499B (en) | A method for detecting a keyboard key through two corresponding lines separately belonging to X port and Y port lines when each key is pressed down | |
JPS55116164A (en) | Information retrieval unit | |
JPS5779535A (en) | Information processor | |
JPS6479617A (en) | Signal processing apparatus of crank angle sensor | |
JPS62278624A (en) | Keyboard input device | |
JPS5614335A (en) | Key input device | |
JPS535532A (en) | Input mode switching system | |
KR950020082A (en) | How to calculate the media position of the touch screen | |
KR910010279A (en) | Serial interface control system and control method | |
JPS55135949A (en) | Soft test support device of microcontroller | |
JPS6476465A (en) | Error position detecting circuit | |
JPS5765979A (en) | Signal processing device | |
KR970028969A (en) | Keyboard Encoding Device and Method | |
JPS5611543A (en) | Control unit of sensor input | |
JPS6412640A (en) | Monitor system for time switching circuit | |
JPS6410351A (en) | Information collection processing system | |
JPS6455654A (en) | Controller | |
JPS55147730A (en) | Data input unit | |
JPS5611542A (en) | Control unit for sensor output |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK4A | Expiration of patent term of an invention patent |