JPS573131A - Controlling system for keyboard - Google Patents
Controlling system for keyboardInfo
- Publication number
- JPS573131A JPS573131A JP7744580A JP7744580A JPS573131A JP S573131 A JPS573131 A JP S573131A JP 7744580 A JP7744580 A JP 7744580A JP 7744580 A JP7744580 A JP 7744580A JP S573131 A JPS573131 A JP S573131A
- Authority
- JP
- Japan
- Prior art keywords
- key group
- scanning
- scanned
- half part
- typewriter
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/20—Dynamic coding, i.e. by key scanning
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE:To use clock pulses of the conventional period to scan key groups, which are depressed in a high speed, in a high speed, by scanning respective blocks of the second blocked scanning key group in intervals of scanning of the first key group. CONSTITUTION:Since a typewriter group TK is scanned in a speed twice as high as the speed for a function key group FK, the function key group FK is divided into the first half part FK1 and the latter half part FK2. The first half part FK1 of the function key group is scanned in the interval of scanning between typewriter key groups TK-A and TK-B, and next, the latter half part FK2 is scanned in the interval of scanning between typewriter key groups TK-B and TK-C. The first half part FK1 of the function key group is scanned again following scanning of the typewriter key group TK-C, and therefore, the typewriter key group TK is scanned twice in the time when the whole of the function key group FK is scanned once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7744580A JPS573131A (en) | 1980-06-09 | 1980-06-09 | Controlling system for keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7744580A JPS573131A (en) | 1980-06-09 | 1980-06-09 | Controlling system for keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS573131A true JPS573131A (en) | 1982-01-08 |
Family
ID=13634210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7744580A Pending JPS573131A (en) | 1980-06-09 | 1980-06-09 | Controlling system for keyboard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS573131A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06202652A (en) * | 1993-08-24 | 1994-07-22 | Kawai Musical Instr Mfg Co Ltd | Musical performance information detection system for electronic musical instrument |
| US6842123B1 (en) | 1999-11-10 | 2005-01-11 | Idec Izumi Corporation | Electromechanical switching device and emergency shut-off and communication system utilizing same |
| EP3982543A4 (en) * | 2019-06-06 | 2023-01-18 | Darfon Electronics Corp. | Key scanning method, scanning method used for key scanning circuit, and input device |
-
1980
- 1980-06-09 JP JP7744580A patent/JPS573131A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06202652A (en) * | 1993-08-24 | 1994-07-22 | Kawai Musical Instr Mfg Co Ltd | Musical performance information detection system for electronic musical instrument |
| JPH079584B2 (en) * | 1993-08-24 | 1995-02-01 | 株式会社河合楽器製作所 | Performance information detection method for electronic musical instruments |
| US6842123B1 (en) | 1999-11-10 | 2005-01-11 | Idec Izumi Corporation | Electromechanical switching device and emergency shut-off and communication system utilizing same |
| EP3982543A4 (en) * | 2019-06-06 | 2023-01-18 | Darfon Electronics Corp. | Key scanning method, scanning method used for key scanning circuit, and input device |
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