JPS6220553B2 - - Google Patents
Info
- Publication number
- JPS6220553B2 JPS6220553B2 JP54018398A JP1839879A JPS6220553B2 JP S6220553 B2 JPS6220553 B2 JP S6220553B2 JP 54018398 A JP54018398 A JP 54018398A JP 1839879 A JP1839879 A JP 1839879A JP S6220553 B2 JPS6220553 B2 JP S6220553B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- key
- group
- key press
- press detection
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 65
- 239000013307 optical fiber Substances 0.000 claims description 28
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 230000003287 optical effect Effects 0.000 claims description 16
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000011295 pitch Substances 0.000 description 9
- 244000145845 chattering Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000007257 malfunction Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Landscapes
- Electrophonic Musical Instruments (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1839879A JPS55111991A (en) | 1979-02-21 | 1979-02-21 | Detector for key in electronic musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1839879A JPS55111991A (en) | 1979-02-21 | 1979-02-21 | Detector for key in electronic musical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55111991A JPS55111991A (en) | 1980-08-29 |
| JPS6220553B2 true JPS6220553B2 (US07709020-20100504-C00041.png) | 1987-05-07 |
Family
ID=11970576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1839879A Granted JPS55111991A (en) | 1979-02-21 | 1979-02-21 | Detector for key in electronic musical instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55111991A (US07709020-20100504-C00041.png) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57118295A (en) * | 1981-01-14 | 1982-07-23 | Okura Indasutorii Kk | Performance method of and apparatus for electronic musical instrument |
| JPS592092A (ja) * | 1982-06-29 | 1984-01-07 | カシオ計算機株式会社 | 電子楽器の接続装置 |
| JPS59194796U (ja) * | 1983-06-13 | 1984-12-25 | ロ−ランド株式会社 | キ−アサイナの押鍵検出装置 |
| JPH0640269B2 (ja) * | 1984-10-25 | 1994-05-25 | ヤマハ株式会社 | 自動演奏ピアノ用光ファイバセンサユニット |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897520A (US07709020-20100504-C00041.png) * | 1972-02-22 | 1973-12-12 | ||
| JPS4917717A (US07709020-20100504-C00041.png) * | 1972-06-07 | 1974-02-16 | ||
| JPS5150477A (US07709020-20100504-C00041.png) * | 1974-10-30 | 1976-05-04 | Oki Electric Ind Co Ltd |
-
1979
- 1979-02-21 JP JP1839879A patent/JPS55111991A/ja active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897520A (US07709020-20100504-C00041.png) * | 1972-02-22 | 1973-12-12 | ||
| JPS4917717A (US07709020-20100504-C00041.png) * | 1972-06-07 | 1974-02-16 | ||
| JPS5150477A (US07709020-20100504-C00041.png) * | 1974-10-30 | 1976-05-04 | Oki Electric Ind Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55111991A (en) | 1980-08-29 |
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