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JPS54111324A - Electronic musical instrument - Google Patents

Electronic musical instrument

Info

Publication number
JPS54111324A
JPS54111324A JP1826978A JP1826978A JPS54111324A JP S54111324 A JPS54111324 A JP S54111324A JP 1826978 A JP1826978 A JP 1826978A JP 1826978 A JP1826978 A JP 1826978A JP S54111324 A JPS54111324 A JP S54111324A
Authority
JP
Japan
Prior art keywords
key
counter
keys
signal
subsequently
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
Application number
JP1826978A
Other languages
Japanese (ja)
Inventor
Tetsuo Nishimoto
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 JP1826978A priority Critical patent/JPS54111324A/en
Publication of JPS54111324A publication Critical patent/JPS54111324A/en
Pending legal-status Critical Current

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Landscapes

  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE: To enable octave performance to be readily accomplished by generating touched key pulses thereby generating the time sharing multiplex signals which are so formed as to indicate the key touching condition of each key.
CONSTITUTION: A decoder 12 subsequently outputs 1 signal in its output end 01 thru 012 when the contents of a counter 15 are 0 to 11. Because of this, when the keys 01, 02 are touched, the key touch signals are outputted from an AND gate 131 and this signal is further outputted as the time sharing multiplex signal TDM via OR gate 14. When 1 scanning period is started in this way, the key touch conditions of the keys provided in 61 pieces are subsequently scanned from the keys of the second octave when the contents of the scale-of-120 counter consisting of a duocecimal counter 15, and decimal counter 16 change subsequently in 0 to 119.
COPYRIGHT: (C)1979,JPO&Japio
JP1826978A 1978-02-20 1978-02-20 Electronic musical instrument Pending JPS54111324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1826978A JPS54111324A (en) 1978-02-20 1978-02-20 Electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1826978A JPS54111324A (en) 1978-02-20 1978-02-20 Electronic musical instrument

Publications (1)

Publication Number Publication Date
JPS54111324A true JPS54111324A (en) 1979-08-31

Family

ID=11966930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1826978A Pending JPS54111324A (en) 1978-02-20 1978-02-20 Electronic musical instrument

Country Status (1)

Country Link
JP (1) JPS54111324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639594A (en) * 1979-09-10 1981-04-15 Nippon Musical Instruments Mfg Electronic musical instrument
JPS56125794A (en) * 1980-01-07 1981-10-02 Whirlpool Co Electronic music instrument with chord generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4876518A (en) * 1972-01-17 1973-10-15
JPS4890217A (en) * 1972-02-14 1973-11-24
JPS5126518A (en) * 1974-08-23 1976-03-04 Nat Semiconductor Corp Denshigakukiniokeru onpuonsentakuyotajukasochi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4876518A (en) * 1972-01-17 1973-10-15
JPS4890217A (en) * 1972-02-14 1973-11-24
JPS5126518A (en) * 1974-08-23 1976-03-04 Nat Semiconductor Corp Denshigakukiniokeru onpuonsentakuyotajukasochi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639594A (en) * 1979-09-10 1981-04-15 Nippon Musical Instruments Mfg Electronic musical instrument
JPS56125794A (en) * 1980-01-07 1981-10-02 Whirlpool Co Electronic music instrument with chord generator

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