CA1015180A - Key switch scanning and encoding system - Google Patents

Key switch scanning and encoding system

Info

Publication number
CA1015180A
CA1015180A CA206,532A CA206532A CA1015180A CA 1015180 A CA1015180 A CA 1015180A CA 206532 A CA206532 A CA 206532A CA 1015180 A CA1015180 A CA 1015180A
Authority
CA
Canada
Prior art keywords
key switch
encoding system
switch scanning
scanning
encoding
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
Application number
CA206,532A
Other versions
CA206532S (en
Inventor
Ralph Deutsch
Glen R. Griffith
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
Application granted granted Critical
Publication of CA1015180A publication Critical patent/CA1015180A/en
Expired legal-status Critical Current

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
    • G10H1/182—Key multiplexing
CA206,532A 1973-08-09 1974-08-08 Key switch scanning and encoding system Expired CA1015180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US386968A US3899951A (en) 1973-08-09 1973-08-09 Key switch scanning and encoding system

Publications (1)

Publication Number Publication Date
CA1015180A true CA1015180A (en) 1977-08-09

Family

ID=23527848

Family Applications (1)

Application Number Title Priority Date Filing Date
CA206,532A Expired CA1015180A (en) 1973-08-09 1974-08-08 Key switch scanning and encoding system

Country Status (7)

Country Link
US (1) US3899951A (en)
JP (2) JPS5933919B2 (en)
CA (1) CA1015180A (en)
DE (1) DE2438196A1 (en)
GB (1) GB1472637A (en)
IT (1) IT1019809B (en)
NL (1) NL170471C (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055103A (en) * 1974-06-03 1977-10-25 The Wurlitzer Company Electronic musical instrument using integrated circuit components
US4041826A (en) * 1974-08-07 1977-08-16 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument
JPS5615519B2 (en) * 1974-08-12 1981-04-10
US4134320A (en) * 1974-08-19 1979-01-16 Nippon Gakki Seizo Kabushiki Kaisha Key assigner for use in 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
US4133241A (en) * 1975-05-27 1979-01-09 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument utilizing recursive algorithm
US4028979A (en) * 1975-06-19 1977-06-14 Norlin Music, Inc. Multiplexer for electronic musical instrument
GB1555979A (en) * 1975-08-15 1979-11-14 Nippon Musical Instruments Mfg Device for detecting a key switch operation
GB1555980A (en) * 1975-08-20 1979-11-14 Nippon Musical Instruments Mfg Channel processor
JPS5239321A (en) * 1975-09-25 1977-03-26 Canon Inc Control device
US4022098A (en) * 1975-10-06 1977-05-10 Ralph Deutsch Keyboard switch detect and assignor
JPS6027040B2 (en) * 1976-04-26 1985-06-26 株式会社河合楽器製作所 key code generator
US4100831A (en) * 1976-08-09 1978-07-18 Kawai Musical Instrument Mfg. Co., Ltd. Automatic digital circuit for generating chords in a digital organ
JPS5937837B2 (en) * 1976-09-24 1984-09-12 株式会社河合楽器製作所 Key code detection circuit for electronic musical instruments
JPS6048760B2 (en) * 1976-09-24 1985-10-29 株式会社河合楽器製作所 Note clock generator for electronic musical instruments
JPS5339729A (en) * 1976-09-24 1978-04-11 Kawai Musical Instr Mfg Co Key chord generator circuit for electronic instrument
JPS5339732A (en) * 1976-09-24 1978-04-11 Kawai Musical Instr Mfg Co Electronic instrument
US4185529A (en) * 1976-12-02 1980-01-29 Kabushiki Kaisha Kawai Gakki Seisakusho Electronic musical instrument
US4099437A (en) * 1976-12-17 1978-07-11 Jerry L. Noury, Jr. Remote control wireless keyboard musical instrument
US4238984A (en) * 1976-12-20 1980-12-16 Kabushiki Kaisha Kawai Gakki Seisakusho Electronic musical instrument
US4387617A (en) * 1976-12-29 1983-06-14 Nippon Gakki Seizo Kabushiki Kaisha Assigner for electronic musical instrument
JPS54161234A (en) * 1978-06-07 1979-12-20 Fujitsu Ltd Encoding circuit for hall element switching
JPS55112634A (en) * 1979-02-23 1980-08-30 Toshiba Corp Input unit
DE3023579C2 (en) * 1980-06-24 1984-10-31 Matth. Hohner Ag, 7218 Trossingen Electronic musical instrument
JPS5746548A (en) * 1980-09-03 1982-03-17 Toshiba Corp Control signal multiplexing circuit
JPS58143221A (en) * 1982-02-22 1983-08-25 Ishida Scales Mfg Co Ltd Operation mode selecting method of electronic weighing apparatus, and electronic weighing apparatus using said method
JPS58214198A (en) * 1983-04-23 1983-12-13 ヤマハ株式会社 Electronic musical instrument
US4524665A (en) * 1983-06-17 1985-06-25 The Marmon Group, Inc. Dynamic controller for sampling channels in an electronic organ having multiplexed keying
JPH0412557Y2 (en) * 1985-08-22 1992-03-26
JPH087590B2 (en) * 1986-09-19 1996-01-29 株式会社河合楽器製作所 Electronic musical instrument
JPS63106818A (en) * 1986-10-24 1988-05-11 Nippon Mektron Ltd Input detecting method
JPH0762798B2 (en) * 1994-05-12 1995-07-05 株式会社河合楽器製作所 Keyboard information processing device for electronic musical instruments
US5925842A (en) * 1997-01-17 1999-07-20 Kabushiki Kaisha Kawai Gakki Electronic music tone generator with power saving control
US7860251B1 (en) * 2002-03-26 2010-12-28 National Semiconductor Corporation Encryption-decryption circuit and method of operation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3594487A (en) * 1969-08-25 1971-07-20 Navcor Inc Contactless electronic keyboard array
US3610799A (en) * 1969-10-30 1971-10-05 North American Rockwell Multiplexing system for selection of notes and voices in an electronic musical instrument
US3752898A (en) * 1971-04-05 1973-08-14 Kawai Musical Instr Mfg Co Electronic musical instrument
JPS5117414B1 (en) * 1971-05-11 1976-06-02
US3697661A (en) * 1971-10-04 1972-10-10 North American Rockwell Multiplexed pitch generator system for use in a keyboard musical instrument
US3700781A (en) * 1972-01-03 1972-10-24 Kawai Musical Instr Mfg Co Electronic musical instrument
US3746773A (en) * 1972-02-04 1973-07-17 Baldwin Co D H Electronic organ employing time position multiplexed signals
US3760358A (en) * 1972-08-08 1973-09-18 Nippon Musical Instruments Mfg Latching selector for selectively drawing out a single signal from among a plurality thereof
US3789719A (en) * 1972-08-28 1974-02-05 J Maillet Tape activated piano and organ player
US3828643A (en) * 1973-02-20 1974-08-13 Chicago Musical Instr Co Scanner for electronic musical instrument
US3842184A (en) * 1973-05-07 1974-10-15 Chicago Musical Instr Co Musical instrument having automatic arpeggio system

Also Published As

Publication number Publication date
NL170471C (en) 1982-11-01
JPS60258593A (en) 1985-12-20
GB1472637A (en) 1977-05-04
US3899951A (en) 1975-08-19
DE2438196A1 (en) 1975-04-30
JPH0137752B2 (en) 1989-08-09
JPS5933919B2 (en) 1984-08-18
AU7194474A (en) 1976-02-05
JPS5041523A (en) 1975-04-16
IT1019809B (en) 1977-11-30
NL170471B (en) 1982-06-01
NL7410473A (en) 1975-02-11

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