WO2010069014A1 - Guitar with electronic keyboard - Google Patents

Guitar with electronic keyboard Download PDF

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Publication number
WO2010069014A1
WO2010069014A1 PCT/BR2008/000394 BR2008000394W WO2010069014A1 WO 2010069014 A1 WO2010069014 A1 WO 2010069014A1 BR 2008000394 W BR2008000394 W BR 2008000394W WO 2010069014 A1 WO2010069014 A1 WO 2010069014A1
Authority
WO
WIPO (PCT)
Prior art keywords
keys
fret
electronic
key
guitar
Prior art date
Application number
PCT/BR2008/000394
Other languages
French (fr)
Inventor
Edson Rodrigues
Original Assignee
Edson Rodrigues
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 Edson Rodrigues filed Critical Edson Rodrigues
Priority to PCT/BR2008/000394 priority Critical patent/WO2010069014A1/en
Publication of WO2010069014A1 publication Critical patent/WO2010069014A1/en

Links

Classifications

    • 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
    • G10H1/32—Constructional details
    • G10H1/34—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
    • G10H1/342—Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments for guitar-like instruments with or without strings and with a neck on which switches or string-fret contacts are used to detect the notes being played
    • 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
    • G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
    • G10H2220/155—User input interfaces for electrophonic musical instruments
    • G10H2220/265—Key design details; Special characteristics of individual keys of a keyboard; Key-like musical input devices, e.g. finger sensors, pedals, potentiometers, selectors
    • G10H2220/275—Switching mechanism or sensor details of individual keys, e.g. details of key contacts, hall effect or piezoelectric sensors used for key position or movement sensing purposes; Mounting thereof
    • G10H2220/295—Switch matrix, e.g. contact array common to several keys, the actuated keys being identified by the rows and columns in contact
    • G10H2220/301—Fret-like switch array arrangements for guitar necks

Definitions

  • Figure 2 presents a side view of the guitar with electronic keyboard.
  • Figure 3 presents an electronic scheme of the control circuit of ths keyboard.
  • the "GUITAR WITH ELECTRONIC KEYBOARD” present patent object, is characterized as a box (1) for placing the following components: the printed circuit board of the electronic control circuit (2), six main keys (3), electronic contact keys (9) of such main keys (3), ON/OFF switch (4) between "Right Handed” and "Left Handed”; support keys (5) and volume (6). Attached to the box (1), the neck (7) of the "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, holds ninety six fret keys (8).
  • Such neck (7) a ⁇ so carries a printed circuit (10) holding the contact keys (9) of the fret keys (8).
  • the fret keys are divided in six groups of sixteen fret keys (8) where each roll is activated by one of the main keys (3).
  • This keyboard layout allows the guitarist to play the "GUITAR WITH ELECTROiMIC KEYBOARD” easily, since the method remains the same: the right hand fingers, in the operation mode "Right Handed", plays the main keys (3) and the left hand fingers plays the fret keys (8), pressing the desired chord. The result is the desired note.
  • the "GUITAR WITH ELECTRONIC KEYBOARD” present patent object, functions in the following manner.
  • the microcontroller (11) performs an electronic scan on all sixteen electronic contact keys (9) of the frets (8) to verify if any fret key (8) was pressed. This occurs when a fret key (8) is pressed, that presses the electronic contact key (9) of the fret (8) that generates an electronic activating signal which is instantly detected when the microcontroller (11) performs the electronic scan. Then, the microcontroller (11) process the data and plays the note of the main key (3) with the fret key (8).
  • the electronic circuit of the "GUITAR WITH ELECTRONIC KEYBOARD”, present patent object, can be seen on figure 3.
  • the Cl 16C55 microcontroller (11) activates a roll in the electronic keyboard (32) through the Cl 74LS373 (12) and the transistor BC547 (35) and through the Cl 74LS138 (16) enables the Ci 74LS244, read the corresponding 8 bits to the electronic contact keys pressing (9) of the main keys (3) with the ON/OFF (4) switch on "Right Handed” or "Left Handed” mode.
  • the microcontroller (11) saves the data in an built- in register named "RegCordas".
  • the microcontroller (11) verifies the state of the most meaningful bit, the 8th bit of the "RegCordas” register, which corresponds to the operation mode "Right Handed” or “Left Handed”. Logic level “ONE” means “Right Handed” and logic level “ZERO” means “Left Handed” mode. Then, the microcontroller (11) analyzes the bits from one to six of the "RegCordas” register, where logic level "ONE” means that the electronic contact key (9) of the main key (3) is “NOT ACTIVE” and logic level “ZERO” means “ACTIVE".
  • the microcontroller (11) values the bit 1 of the "RegCorda” register the musical note E_1 , the bit_2 to A_1 , the bit_3 to D_2, the bit_4 to G_2, the bit_5 to B_2 and bit_6 to E_3, ranging from the lowest pitch to the highest 1 pitch.
  • the microcontroller (11) values the bit_1 of the "RegCorda” register the musical note E_3, the bit_2 to B_2, the bit_3 to G_2, the bit_4 to D_2, the bit_5 to A_1 and the bit_6 to E_1 , ranging from the highest pitch to the lowest pitch.
  • the microcontroller (11) activates the desired column of the electronic keyboard (33) through the CI 74LS373 (123) and the transistors BC547 (34). Then, through the CS 74LS138 (16), the microcontroller (11) enables the Cl 74LS244 (14),
  • bit 8 is related to the 8th fret
  • the microcontroller (11) will verify the data on the e "RegTraste2" register, where the same procedure is executed, if even still
  • the microcontroller (11) enters these data in a table previously stored in
  • microcontroller (11) enables the desired built-in system between the built-

Abstract

A guitar with electronic keyboard is characterized as a box (1 ) for placing the following components: the printed circuit board of the electronic control circuit (2), six main keys (3), electronic contact keys (9) of such main keys (3), ON/OFF switch (4) between "Right Handed" and "Left Handed"; support keys (5) and volume (6). Attached to the box (1 ), the neck (7) holds ninety six fret keys (8). Such neck (7) also carries a printed circuit (10) holding the contact keys (9) of the fret keys (8). The fret keys are divided in six groups of sixteen fret keys (8) where each roll is activated by one of the main keys (3). This keyboard layout allows easy playing of the guitar: the right hand fingers, in the operation mode "Right Handed", plays the main keys (3) and the left hand fingers plays the fret keys (8), pressing the desired chord.

Description

Title: "GUITAR WITH ELECTRONIC KEYBOARD" DISCLOSURE OF THE PATENT The present invention patent's goal is to provide musicians and guitarists with a guitar with an electronic keyboard, to expand the artistic creation potential of these musicians, utilizing electronic musical notes and synthesized sounds. There are models available in the market of electronic keyboards but all destined to be used by musicians with keyboard or piano skills. Currently, only musicians with piano skills have access to the advantages of electronic keyboards, such as: generating sounds of many different instruments, creating riffs and scores with the aid of a computer with the proper software, and others. For providing guitarists with the same musical creation resources as pianists, I have invented a "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, replacing the strings and frets with electronic keys. The keys replace each string of a regular guitar and there is an electronic main key on the body of the "GUITAR WITH ELECTROIIiC KEYBOARD", and to replace the frets there are sixteen electronic keys along the neck of the guitar, Since there are left handed and right handed musicians, it was invented an electronic key that allows the user to switch between two operating modes, "Right Handed" and "Left Handed". In the "Right Handed" mode, the keys will be: E_1 , A_1 , D_2, G_2, B_2 and E_3, ranging from the lowest pitch to the highest. On "Left Handed", it will be: E_3, B_2, G_2, D_2, A_1 and E_1 , ranging from the highest pitch to the lowest pitch. Therefore, with a simple switch of the key the instrument can adapt to fit the musician's needs. BRIEF DESCRIPTION OF THE DRAWINGS The attachments shows the drawings and electronic schemes needed for a detailed description of the "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, where: Figure 1 presents a frontal view of the guitar with electronic keyboard. Figure 2 presents a side view of the guitar with electronic keyboard. Figure 3 presents an electronic scheme of the control circuit of ths keyboard. DETAILED DESCRIPTION OF THE PATEMT A As how the figures above shows, the "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, is characterized as a box (1) for placing the following components: the printed circuit board of the electronic control circuit (2), six main keys (3), electronic contact keys (9) of such main keys (3), ON/OFF switch (4) between "Right Handed" and "Left Handed"; support keys (5) and volume (6). Attached to the box (1), the neck (7) of the "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, holds ninety six fret keys (8). Such neck (7) aϊso carries a printed circuit (10) holding the contact keys (9) of the fret keys (8). The fret keys are divided in six groups of sixteen fret keys (8) where each roll is activated by one of the main keys (3). This keyboard layout allows the guitarist to play the "GUITAR WITH ELECTROiMIC KEYBOARD" easily, since the method remains the same: the right hand fingers, in the operation mode "Right Handed", plays the main keys (3) and the left hand fingers plays the fret keys (8), pressing the desired chord. The result is the desired note. The "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, functions in the following manner. Pressing the main key (3), attached to the key support (5), which, in turn, presses the electronic contact key of the main key (9) creating an electronic signal which is detected by the built-in microcontroller circuit (11) on figure 3. Detecting the pressing of the main key (3), the microcontroller (11) performs an electronic scan on all sixteen electronic contact keys (9) of the frets (8) to verify if any fret key (8) was pressed. This occurs when a fret key (8) is pressed, that presses the electronic contact key (9) of the fret (8) that generates an electronic activating signal which is instantly detected when the microcontroller (11) performs the electronic scan. Then, the microcontroller (11) process the data and plays the note of the main key (3) with the fret key (8). The electronic circuit of the "GUITAR WITH ELECTRONIC KEYBOARD", present patent object, can be seen on figure 3. On the program startup, the Cl 16C55 microcontroller (11) activates a roll in the electronic keyboard (32) through the Cl 74LS373 (12) and the transistor BC547 (35) and through the Cl 74LS138 (16) enables the Ci 74LS244, read the corresponding 8 bits to the electronic contact keys pressing (9) of the main keys (3) with the ON/OFF (4) switch on "Right Handed" or "Left Handed" mode. The microcontroller (11) saves the data in an built- in register named "RegCordas". Then, the microcontroller (11) verifies the state of the most meaningful bit, the 8th bit of the "RegCordas" register, which corresponds to the operation mode "Right Handed" or "Left Handed". Logic level "ONE" means "Right Handed" and logic level "ZERO" means "Left Handed" mode. Then, the microcontroller (11) analyzes the bits from one to six of the "RegCordas" register, where logic level "ONE" means that the electronic contact key (9) of the main key (3) is "NOT ACTIVE" and logic level "ZERO" means "ACTIVE". For example, if the "Right Handed" mode is picked through the ON/OFF switch (4), the microcontroller (11) values the bit 1 of the "RegCorda" register the musical note E_1 , the bit_2 to A_1 , the bit_3 to D_2, the bit_4 to G_2, the bit_5 to B_2 and bit_6 to E_3, ranging from the lowest pitch to the highest 1 pitch. In the "Left Handed" mode, the microcontroller (11) values the bit_1 of the "RegCorda" register the musical note E_3, the bit_2 to B_2, the bit_3 to G_2, the bit_4 to D_2, the bit_5 to A_1 and the bit_6 to E_1 , ranging from the highest pitch to the lowest pitch. For each main key (3) pressed, which means iogic level "ZERO" for the referring bit on the "RegCorda" register, the microcontroller (11) activates the desired column of the electronic keyboard (33) through the CI 74LS373 (123) and the transistors BC547 (34). Then, through the CS 74LS138 (16), the microcontroller (11) enables the Cl 74LS244 (14),
10 reading the 8 bits of such Cl 74LS244 (13) corresponding to the
11 activation status of the electronic contact keys (9) of the fret keys (8) of
12 one of the eight and saves the data in a built-in register named is "RegTraste2". And then disables the Cl 74LS244 (13) and the CS
14 74LS168 (16).
15 On the next step, the microcontroller (11) determines which fret
16 key (8) being pressed has a higher pitch, through the analysis of the
17 sixteen bits of the "RegTrastel" register and the "RegTraste2" register,
18 where each one holds eight bits. It's important to inform that the fret key
19 (8) with the highest pitch is the closest to the box (1), the 18th fret key (8).
20 The eight bits of "RegTrastel" are related to the highest pitch fret keys
21 (8): bit 8 valued to the 16th fret key (8), bit 7 to the 15th fret key (8) and
22 then, successively, until the 9th fret key (8). The 8 bits on "RegTraste2"
23 corresponds to the lowest pitch fret keys (8): bit 8 is related to the 8th fret
24 key (8), bit 8 to the 7th fret key (8) and then, successively, until the 1st
25 fret key (8).
26 On to the next step, the microcontroller (11) verifies where is bit
27 with logic level "ZERO" referring to the fret key (8) of the highest pitch
28 musical note. For example, starting through the "RegTrastel" register
29 and if bit 3, bit 4 and bit 5 have logic level "ZERO", then the
30 microcontroller (11) will play the musical note held by bit 5, referring to 1 the 13th fret key (8), since it's the highest pitched key. Therefore, bit 3
2 which refers to the 11th fret key (8) together with bit 4 which refers to the
3 12th fret key (8) are ignored by the microcontroller (11), despite having
4 logic level "ZERO". If there aren't any bits with logic level "ZERO" on the
5 "RegTrastel" register, the microcontroller (11) will verify the data on the e "RegTraste2" register, where the same procedure is executed, if even still
7 there are no bits with logic level "ZERO" on the "RegTraste2" register, the
8 microcontroller (11) will play the corresponding musical note, since the
9 main key (3) was pressed.
10 Since the microcontroller (11) determined which musical note is to
11 be played according to the pressing of a main key (3) and it's fret key (8),
12 the microcontroller (11) enters these data in a table previously stored in
13 it's PROM memory, acquiring a control word. The musical notes are
14 activated through the following built-in circuits: CI1S 74LS373 17, 18, 19, is 20, 21 where each bit with logic level "ONE" on the exit of these built-in
16 circuits activates an analog electronic key of the built-in circuits CFs 4086
17 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 which, in turn, closes the
18 electronic contact to activate the musical note of the electronic musical
19 note generator circuit (36).
20 Through the acquired control word in the table of the
21 microcontroller (11), it is determined which built-in circuit and which bit
22 must be activated. Finally, through the CI 74LS138 (16), the
23 microcontroller (11) enables the desired built-in system between the built-
24 in circuits Cl 74LS373 17, 18, 19, 20 and 21 and values logic level ONE"
25 on the desired bit that closes the electronic analog contact of the built-in
26 circuits Cl's 4066 22, 23, 24, 25, 26, 27, 28, 29, 30 and 31 , playing then
27 the musical note in the electronic musical note generator circuit (36).

Claims

CLAIfUtS 1 st) "GUITAR WITH ELECTRONIC KEYBOARD" is characterized by a box (1) attached to the neck (7) which holds ninety six fret keys (8) with it's respective electronic contact keys (9) arranged in six groups of sixteen fret keys (8) enrolled, where each group of sixteen fret keys (8) is activated by the respective main key (3) with it's respective electronic contact key (9) generating an electronic signal received by the microcontroller (11) that process these data valuing logic ievei "ONE" to the respective bit in one of the built-in circuits 74LS373 (17), (18), (19), (20) and (21) which closes the contact of the respective electronic analog key in one of the built-in circuits 4066 (22), (23), (24), (25), (26), (27), (28), (29), (30) and (31) which plays the musical note in the electronic musical note generator circuit (36) accordingly to the activation of the main key (3) with the fret key (8), depending on the operating mode chosen between "Right Handed" or "Left Handed" in the OWOFF switch (4) which volume is controlled by the volume button (6).
PCT/BR2008/000394 2008-12-17 2008-12-17 Guitar with electronic keyboard WO2010069014A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BR2008/000394 WO2010069014A1 (en) 2008-12-17 2008-12-17 Guitar with electronic keyboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2008/000394 WO2010069014A1 (en) 2008-12-17 2008-12-17 Guitar with electronic keyboard

Publications (1)

Publication Number Publication Date
WO2010069014A1 true WO2010069014A1 (en) 2010-06-24

Family

ID=42268197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2008/000394 WO2010069014A1 (en) 2008-12-17 2008-12-17 Guitar with electronic keyboard

Country Status (1)

Country Link
WO (1) WO2010069014A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666875A (en) * 1969-07-11 1972-05-30 Mario Ranzato Electronically operated stringed instruments
US4177705A (en) * 1978-12-28 1979-12-11 Evangelista Fred J Stringless electronic musical instrument
US4339979A (en) * 1978-12-21 1982-07-20 Travis Norman Electronic music instrument
KR890003412B1 (en) * 1986-09-02 1989-09-20 송진황 A guitar
FR2711443A1 (en) * 1993-10-19 1995-04-28 Goldman Pascal Arpeggio keyboard for musical instruments equipped with an electronic keyboard as a replacement for the musical strings
US5739455A (en) * 1996-12-17 1998-04-14 Poon; Yiu Cheung Electronic guitar music simulation system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666875A (en) * 1969-07-11 1972-05-30 Mario Ranzato Electronically operated stringed instruments
US4339979A (en) * 1978-12-21 1982-07-20 Travis Norman Electronic music instrument
US4177705A (en) * 1978-12-28 1979-12-11 Evangelista Fred J Stringless electronic musical instrument
KR890003412B1 (en) * 1986-09-02 1989-09-20 송진황 A guitar
FR2711443A1 (en) * 1993-10-19 1995-04-28 Goldman Pascal Arpeggio keyboard for musical instruments equipped with an electronic keyboard as a replacement for the musical strings
US5739455A (en) * 1996-12-17 1998-04-14 Poon; Yiu Cheung Electronic guitar music simulation system

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