JPH03269585A - Electronic musical instrument - Google Patents

Electronic musical instrument

Info

Publication number
JPH03269585A
JPH03269585A JP2070505A JP7050590A JPH03269585A JP H03269585 A JPH03269585 A JP H03269585A JP 2070505 A JP2070505 A JP 2070505A JP 7050590 A JP7050590 A JP 7050590A JP H03269585 A JPH03269585 A JP H03269585A
Authority
JP
Japan
Prior art keywords
key
key switch
signal
switch
pressed
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
JP2070505A
Other languages
Japanese (ja)
Other versions
JP2674264B2 (en
Inventor
Kazuo Haruyama
Original Assignee
Yamaha Corp
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 Yamaha Corp filed Critical Yamaha Corp
Priority to JP2070505A priority Critical patent/JP2674264B2/en
Publication of JPH03269585A publication Critical patent/JPH03269585A/en
Application granted granted Critical
Publication of JP2674264B2 publication Critical patent/JP2674264B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To preclude chattering due to a rebound even when a key is pressed slowly by providing an inhibiting means which inhibits a key state signal from varying for a constant time after a 2nd or specific succeeding key switch element operates according to the output of a timer means.
CONSTITUTION: When a key is pressed, key switch elements 1-1 - 1-n operate in order. A key state detecting means 2 detects the operation states of those key switch elements 1-1 - 1-n and outputs a key state signal such as a key depression signal and a key release signal according to the detection results. Further, the timer means 3 clocks the elapsed time from the specific key switch element among the 2nd and succeeding key switch elements 1-2 - 1-n. The inhibiting means 4 inhibits the key state signal from varying until the elapsed time exceeds the constant time. Consequently, even when the key is pressed slowly, the chattering due to the rebound, etc., is precluded.
COPYRIGHT: (C)1991,JPO&Japio
JP2070505A 1990-03-20 1990-03-20 Electronic musical instrument Expired - Fee Related JP2674264B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2070505A JP2674264B2 (en) 1990-03-20 1990-03-20 Electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2070505A JP2674264B2 (en) 1990-03-20 1990-03-20 Electronic musical instrument

Publications (2)

Publication Number Publication Date
JPH03269585A true JPH03269585A (en) 1991-12-02
JP2674264B2 JP2674264B2 (en) 1997-11-12

Family

ID=13433457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2070505A Expired - Fee Related JP2674264B2 (en) 1990-03-20 1990-03-20 Electronic musical instrument

Country Status (1)

Country Link
JP (1) JP2674264B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05297870A (en) * 1992-04-20 1993-11-12 Kawai Musical Instr Mfg Co Ltd Touch detecting device for key of electronic musical instrument
JPH09120289A (en) * 1995-10-25 1997-05-06 Kawai Musical Instr Mfg Co Ltd Keyboard device of electronic musical instrument, and electronic piano
JPH09120288A (en) * 1995-10-25 1997-05-06 Kawai Musical Instr Mfg Co Ltd Keyboard device of electronic musical instrument, and electronic piano
JP2008096526A (en) * 2006-10-06 2008-04-24 Kawai Musical Instr Mfg Co Ltd Electronic keyboard instrument
JP2014026031A (en) * 2012-07-25 2014-02-06 Yamaha Corp Electronic keyboard instrument

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05297870A (en) * 1992-04-20 1993-11-12 Kawai Musical Instr Mfg Co Ltd Touch detecting device for key of electronic musical instrument
JPH09120289A (en) * 1995-10-25 1997-05-06 Kawai Musical Instr Mfg Co Ltd Keyboard device of electronic musical instrument, and electronic piano
JPH09120288A (en) * 1995-10-25 1997-05-06 Kawai Musical Instr Mfg Co Ltd Keyboard device of electronic musical instrument, and electronic piano
JP2008096526A (en) * 2006-10-06 2008-04-24 Kawai Musical Instr Mfg Co Ltd Electronic keyboard instrument
JP2014026031A (en) * 2012-07-25 2014-02-06 Yamaha Corp Electronic keyboard instrument

Also Published As

Publication number Publication date
JP2674264B2 (en) 1997-11-12

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