JPS5211026A - Optical detection system of depressed keys - Google Patents
Optical detection system of depressed keysInfo
- Publication number
- JPS5211026A JPS5211026A JP50087669A JP8766975A JPS5211026A JP S5211026 A JPS5211026 A JP S5211026A JP 50087669 A JP50087669 A JP 50087669A JP 8766975 A JP8766975 A JP 8766975A JP S5211026 A JPS5211026 A JP S5211026A
- Authority
- JP
- Japan
- Prior art keywords
- detection system
- optical detection
- depressed keys
- depressed
- keys
- 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
- Electrophonic Musical Instruments (AREA)
Abstract
PURPOSE: To optically detect depressed kays and their strength for greater reliability and enable two different kind of detection using a single detection system.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50087669A JPS5211026A (en) | 1975-07-16 | 1975-07-16 | Optical detection system of depressed keys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50087669A JPS5211026A (en) | 1975-07-16 | 1975-07-16 | Optical detection system of depressed keys |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5211026A true JPS5211026A (en) | 1977-01-27 |
JPS5633718B2 JPS5633718B2 (en) | 1981-08-05 |
Family
ID=13921337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50087669A Granted JPS5211026A (en) | 1975-07-16 | 1975-07-16 | Optical detection system of depressed keys |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5211026A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50122652A (en) * | 1974-03-15 | 1975-09-26 | ||
WO1980002886A1 (en) * | 1979-06-15 | 1980-12-24 | Teledyne Ind | Player piano recording system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01282002A (en) * | 1988-05-07 | 1989-11-13 | Kubota Ltd | Structure of rear axle case of tractor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956A (en) * | 1972-04-13 | 1974-01-05 |
-
1975
- 1975-07-16 JP JP50087669A patent/JPS5211026A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4956A (en) * | 1972-04-13 | 1974-01-05 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50122652A (en) * | 1974-03-15 | 1975-09-26 | ||
JPS5737829B2 (en) * | 1974-03-15 | 1982-08-12 | ||
WO1980002886A1 (en) * | 1979-06-15 | 1980-12-24 | Teledyne Ind | Player piano recording system |
JPS56500712A (en) * | 1979-06-15 | 1981-05-21 |
Also Published As
Publication number | Publication date |
---|---|
JPS5633718B2 (en) | 1981-08-05 |
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