JPS59194796U - Key assigner key press detection device - Google Patents
Key assigner key press detection deviceInfo
- Publication number
- JPS59194796U JPS59194796U JP9009383U JP9009383U JPS59194796U JP S59194796 U JPS59194796 U JP S59194796U JP 9009383 U JP9009383 U JP 9009383U JP 9009383 U JP9009383 U JP 9009383U JP S59194796 U JPS59194796 U JP S59194796U
- Authority
- JP
- Japan
- Prior art keywords
- key
- matrix
- detection device
- press detection
- assigner
- 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
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＣＰＵを用いた本考案によるキーアサインの一
例を示す回路ブロック図、第２図はアドレスデコーダの
パラレル出力が光信号に変換される様子を説明する図、
第３図はタイムスロットとＣＰＵ入力ポートと押鍵の音
高との対応を説明する図、第４図はメインファイバーの
構造を説明する図、第５図は鍵操作によって光信号の通
過が制御される様子を説明する図である。
１０・・・・・・ＣＰＵ、２０・−・・・・アドレスデ
コーダ、３０・・・・・・音源、ｌＥＤ〜３ＥＤ・・・
・・・発光ダイオード、Ｌ１〜Ｌ８・・・・・・光信号
、Ａ−Ｈ，１〜８・・・・・・メインファイバー、Ｋ・
・・・・・鍵、Ｓ・・・・・・シャッター、Ｄ０〜Ｄ８
・・・・・・受光素子。
２１■
Ｉ °１ １
１ と−一FIG. 1 is a circuit block diagram showing an example of key assignment according to the present invention using a CPU, and FIG. 2 is a diagram illustrating how the parallel output of an address decoder is converted into an optical signal.
Figure 3 is a diagram explaining the correspondence between time slots, CPU input ports, and pitches of pressed keys, Figure 4 is a diagram explaining the structure of the main fiber, and Figure 5 is a diagram explaining the passage of optical signals by key operation. FIG. 10...CPU, 20...Address decoder, 30...Sound source, 1ED~3ED...
...Light emitting diode, L1-L8...Optical signal, A-H, 1-8...Main fiber, K.
...Key, S...Shutter, D0-D8
······Light receiving element. 21 ■ I °1 1 1 and -1
Claims (1)
て、上記マトリックスの交点に配置された鍵スィッチの
開閉を検出するキーアサイナにおいて、上記走査信号に
は光信号を用い、該マトリックスは光ファイバーで構成
して、該マトリックスの交点を形成する該光ファイバー
の該光信号射出側及び入射側の対向する各光フアイバー
分岐端末間に該光信号の通過を制御するシャッターを配
置し、該シャッターは鍵操作に連動する如（に構成した
ことを特徴とする押鍵検出装置。A key assigner detects the opening/closing of a key switch placed at the intersection of the matrix by sequentially scanning the intersections of a matrix in a time-sharing manner with a scanning signal, and the scanning signal uses an optical signal, and the matrix is made of an optical fiber. A shutter for controlling the passage of the optical signal is disposed between the opposing optical fiber branch terminals on the optical signal output side and the input side of the optical fiber forming the intersection of the matrix, and the shutter can be operated by a key. A key press detection device characterized in that it is configured in such a way that they are interlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009383U JPS59194796U (en) | 1983-06-13 | 1983-06-13 | Key assigner key press detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009383U JPS59194796U (en) | 1983-06-13 | 1983-06-13 | Key assigner key press detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59194796U true JPS59194796U (en) | 1984-12-25 |
| JPH0432719Y2 JPH0432719Y2 (en) | 1992-08-06 |
Family
ID=30219996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9009383U Granted JPS59194796U (en) | 1983-06-13 | 1983-06-13 | Key assigner key press detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59194796U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315637A (en) * | 2002-04-26 | 2003-11-06 | Yamaha Corp | Structure of light emitting part |
| JP2016086239A (en) * | 2014-10-23 | 2016-05-19 | ファナック株式会社 | keyboard |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897520A (en) * | 1972-02-22 | 1973-12-12 | ||
| JPS5150477A (en) * | 1974-10-30 | 1976-05-04 | Oki Electric Ind Co Ltd | |
| JPS55111991A (en) * | 1979-02-21 | 1980-08-29 | Nippon Musical Instruments Mfg | Detector for key in electronic musical instrument |
-
1983
- 1983-06-13 JP JP9009383U patent/JPS59194796U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897520A (en) * | 1972-02-22 | 1973-12-12 | ||
| JPS5150477A (en) * | 1974-10-30 | 1976-05-04 | Oki Electric Ind Co Ltd | |
| JPS55111991A (en) * | 1979-02-21 | 1980-08-29 | Nippon Musical Instruments Mfg | Detector for key in electronic musical instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315637A (en) * | 2002-04-26 | 2003-11-06 | Yamaha Corp | Structure of light emitting part |
| JP2016086239A (en) * | 2014-10-23 | 2016-05-19 | ファナック株式会社 | keyboard |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0432719Y2 (en) | 1992-08-06 |
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