IT1083954B - Dispositivo per rivelare l'azionamento di interruttori relativi a tasti - Google Patents

Dispositivo per rivelare l'azionamento di interruttori relativi a tasti

Info

Publication number
IT1083954B
IT1083954B IT26291/76A IT2629176A IT1083954B IT 1083954 B IT1083954 B IT 1083954B IT 26291/76 A IT26291/76 A IT 26291/76A IT 2629176 A IT2629176 A IT 2629176A IT 1083954 B IT1083954 B IT 1083954B
Authority
IT
Italy
Prior art keywords
detect
key switches
switches
key
Prior art date
Application number
IT26291/76A
Other languages
English (en)
Original Assignee
Nippon Musical Instruments Mfg
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
Priority claimed from JP50099152A external-priority patent/JPS5223324A/ja
Priority claimed from JP50099151A external-priority patent/JPS5941197B2/ja
Priority claimed from JP50100877A external-priority patent/JPS5224516A/ja
Application filed by Nippon Musical Instruments Mfg filed Critical Nippon Musical Instruments Mfg
Application granted granted Critical
Publication of IT1083954B publication Critical patent/IT1083954B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/20—Dynamic coding, i.e. by key scanning
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/18—Selecting circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electrophonic Musical Instruments (AREA)
IT26291/76A 1975-08-15 1976-08-13 Dispositivo per rivelare l'azionamento di interruttori relativi a tasti IT1083954B (it)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP50099152A JPS5223324A (en) 1975-08-15 1975-08-15 Key coder
JP50099151A JPS5941197B2 (ja) 1975-08-15 1975-08-15 キ−スイッチ動作検出方法
JP50100877A JPS5224516A (en) 1975-08-20 1975-08-20 Key switch operation detection circuit

Publications (1)

Publication Number Publication Date
IT1083954B true IT1083954B (it) 1985-05-25

Family

ID=27308875

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26291/76A IT1083954B (it) 1975-08-15 1976-08-13 Dispositivo per rivelare l'azionamento di interruttori relativi a tasti

Country Status (6)

Country Link
US (2) US4148017A (it)
CA (1) CA1086539A (it)
DE (1) DE2636281C2 (it)
GB (1) GB1555979A (it)
IT (1) IT1083954B (it)
NL (1) NL7609031A (it)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034758B2 (ja) * 1976-04-26 1985-08-10 株式会社河合楽器製作所 キ−アサイナ
US4348928A (en) * 1976-09-24 1982-09-14 Kabushiki Kaishi Kawai Gakki Seisakusho Electronic musical instrument
US4214500A (en) * 1977-06-10 1980-07-29 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instruments
JPS5477532A (en) * 1977-12-02 1979-06-21 Matsushita Electric Ind Co Ltd Key identifying circuit
JPS54145515A (en) * 1978-05-04 1979-11-13 Matsushita Electric Ind Co Ltd Electronic musical instrument
JPS5565994A (en) * 1978-11-10 1980-05-17 Nippon Musical Instruments Mfg Electronic musical instrument
JPS5565996A (en) * 1978-11-13 1980-05-17 Nippon Musical Instruments Mfg Electronic musical instrument
DE3002859A1 (de) 1979-01-29 1981-01-22 Nippon Musical Instruments Mfg Elektronisches musikinstrument
US4326194A (en) * 1979-04-16 1982-04-20 The Singer Company Dual encoded switching matrix
JPS55142397A (en) * 1979-04-23 1980-11-06 Nippon Musical Instruments Mfg Key information forming system for electronic musical instrument
US4321850A (en) * 1979-05-05 1982-03-30 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument with highest priority key tone production
JPS55153992A (en) * 1979-05-19 1980-12-01 Nippon Musical Instruments Mfg Electronic musical instrument
JPS5636697A (en) * 1979-09-03 1981-04-09 Nippon Musical Instruments Mfg Electronic musical instrument
US4303907A (en) * 1979-12-17 1981-12-01 Rca Corporation Low power switch closure sensing circuit
US4353278A (en) * 1980-01-28 1982-10-12 Nippon Gakki Seizo Kabushiki Kaisha Chord generating apparatus of electronic musical instrument
US4318087A (en) * 1980-09-08 1982-03-02 Rca Corporation Switch closure sensing circuit
JPS5754995A (en) * 1980-09-20 1982-04-01 Nippon Musical Instruments Mfg Electronic musical instrument
JPS5829040A (ja) * 1981-08-13 1983-02-21 Toshiba Corp キ−ボ−ド制御方式
US4667181A (en) * 1983-07-15 1987-05-19 Honeywell Inc. Keyboard data input assembly
JPH087590B2 (ja) 1986-09-19 1996-01-29 株式会社河合楽器製作所 電子楽器
US4918445A (en) * 1988-07-20 1990-04-17 Hewlett-Packard Company Scanning, row-column type keyboard
JPH0348180A (ja) * 1989-04-27 1991-03-01 Casio Comput Co Ltd スイッチ状態高速検出装置
US20080173163A1 (en) * 2007-01-24 2008-07-24 Pratt Jonathan E Musical instrument input device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626406A (en) * 1969-09-26 1971-12-07 Yokogawa Electric Works Ltd Code signal input apparatus
US3660838A (en) * 1970-04-02 1972-05-02 Control Devices Inc Multiple point switching apparatus
JPS5117414B1 (it) * 1971-05-11 1976-06-02
US3828643A (en) * 1973-02-20 1974-08-13 Chicago Musical Instr Co Scanner for electronic musical instrument
GB1464912A (en) * 1973-02-26 1977-02-16 Casio Computer Co Ltd Information input device
US3899951A (en) * 1973-08-09 1975-08-19 Nippon Musical Instruments Mfg Key switch scanning and encoding system
US3974478A (en) * 1973-08-09 1976-08-10 Nippon Gakki Seizo Kabushiki Kaisha Key switch scanning and encoding system
JPS5086929A (it) * 1973-11-30 1975-07-12
US4041826A (en) * 1974-08-07 1977-08-16 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument
GB1518951A (en) * 1974-09-05 1978-07-26 Nippon Musical Instruments Mfg Key assigner
US3955460A (en) * 1975-03-26 1976-05-11 C. G. Conn Ltd. Electronic musical instrument employing digital multiplexed signals

Also Published As

Publication number Publication date
NL7609031A (nl) 1977-02-17
DE2636281C2 (de) 1982-06-03
US4148017A (en) 1979-04-03
CA1086539A (en) 1980-09-30
GB1555979A (en) 1979-11-14
DE2636281A1 (de) 1977-02-24
USRE32069E (en) 1986-01-21

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