JPS5211026A - Optical detection system of depressed keys - Google Patents

Optical detection system of depressed keys

Info

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
Application number
JP50087669A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5633718B2 (enrdf_load_stackoverflow
Inventor
Koji Niimi
Shuhei Kono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP50087669A priority Critical patent/JPS5211026A/ja
Publication of JPS5211026A publication Critical patent/JPS5211026A/ja
Publication of JPS5633718B2 publication Critical patent/JPS5633718B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Electrophonic Musical Instruments (AREA)
JP50087669A 1975-07-16 1975-07-16 Optical detection system of depressed keys Granted JPS5211026A (en)

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 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122652A (enrdf_load_stackoverflow) * 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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01282002A (ja) * 1988-05-07 1989-11-13 Kubota Ltd トラクタの後車軸ケース構造

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956A (enrdf_load_stackoverflow) * 1972-04-13 1974-01-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956A (enrdf_load_stackoverflow) * 1972-04-13 1974-01-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122652A (enrdf_load_stackoverflow) * 1974-03-15 1975-09-26
WO1980002886A1 (en) * 1979-06-15 1980-12-24 Teledyne Ind Player piano recording system
JPS56500712A (enrdf_load_stackoverflow) * 1979-06-15 1981-05-21

Also Published As

Publication number Publication date
JPS5633718B2 (enrdf_load_stackoverflow) 1981-08-05

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