JPH0448590U - - Google Patents
Info
- Publication number
- JPH0448590U JPH0448590U JP8997590U JP8997590U JPH0448590U JP H0448590 U JPH0448590 U JP H0448590U JP 8997590 U JP8997590 U JP 8997590U JP 8997590 U JP8997590 U JP 8997590U JP H0448590 U JPH0448590 U JP H0448590U
- Authority
- JP
- Japan
- Prior art keywords
- reflective surface
- photocoupler
- key
- musical tone
- keyboard instrument
- 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
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は本考案の他の実施例の要部を示す縦断面図
である。
１……鍵盤シヤーシ、２……鍵、９……反射面
、１０……フオトカプラ、１４……遮光部材。
FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing essential parts of another embodiment of the present invention. 1... Keyboard chassis, 2... Key, 9... Reflective surface, 10... Photo coupler, 14... Light shielding member.
Claims (1)
面に対向した位置に且つ前記鍵の押下げに応じて
前記反射面との距離が変化するようにそれぞれフ
オトカプラを配置した電子鍵盤楽器における楽音
特性制御装置において、前記反射面とフオトカプ
ラとの間に位置して、反射面とフオトカプラとの
間に外部からの光が入るのを防止する遮光部材を
設けてなる電子鍵盤楽器における楽音特性制御装
置。 Musical tone characteristic control in an electronic keyboard instrument, in which a reflective surface is provided on the bottom surface of each key, and a photocoupler is placed at a position opposite to the reflective surface so that the distance to the reflective surface changes according to the depression of the key. A musical tone characteristic control device for an electronic keyboard instrument, comprising: a light shielding member located between the reflective surface and the photocoupler to prevent external light from entering between the reflective surface and the photocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8997590U JPH0448590U (en) | 1990-08-28 | 1990-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8997590U JPH0448590U (en) | 1990-08-28 | 1990-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448590U true JPH0448590U (en) | 1992-04-24 |
Family
ID=31824345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8997590U Pending JPH0448590U (en) | 1990-08-28 | 1990-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008233643A (en) * | 2007-03-22 | 2008-10-02 | Korg Inc | Key displacement quantity detecting device |
-
1990
- 1990-08-28 JP JP8997590U patent/JPH0448590U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008233643A (en) * | 2007-03-22 | 2008-10-02 | Korg Inc | Key displacement quantity detecting device |
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