JPS6221197A - music equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an electronic musical instrument with a display device.

[Prior Art] Conventionally, electronic musical instruments have a one-key play function that stores musical pitch information in a memory, reads out this musical tone information, and releases musical notes one by one each time the operating means is operated in sequence. Those with the following are being realized.

[Problems with the Prior Art] However, with this type of music, in order to check the content of a one-key play performance, it was necessary to prepare a musical score showing the content of the performance and turn the pages one after another.

There are also light emitting diodes for every 6 keys on the m board, and depending on the performance, the light emitting diodes of the keys corresponding to the pitch of the currently emitted sound are lit in sequence, but it is possible to grasp the flow of the entire song. I couldn't.

[Object of the invention] Therefore, one object of the present invention is to perform the following according to one-key play performance.
The objective is to provide an electronic musical instrument that allows the user to visually see the performance content of this one-key play performance.

[Summary of the Invention] In order to achieve this object, the present invention stores musical score video information indicating the contents of one-key play performance in the memory of the electronic musical instrument, and displays the musical score sequentially in accordance with one-key play performance. This is the main point.

[Configuration of Embodiment] An embodiment of the present invention will be described in detail below with reference to one drawing.

Figure 1 shows the overall appearance of the electronic musical instrument, in which a keyboard 2 is provided on the front side of the main body part 1, and a pair of left and right sound emitting parts 3.3 are provided at the back of this keyboard 2. It is being A lid 4 is rotatably provided on the keyboard 2 of the main body l, and when it is closed, the keyboard 2 opens as shown in FIG.
cover the keyboard 2, and when opened, the keyboard 2 will open as shown in Figure 1.
It is now possible to stand up against. A display section 5 is provided on the back side of the lid 4, and is positioned in front of the operator when the lid 4 is raised.The display section 5 is composed of a dot matrix color liquid crystal display device. , as shown in FIGS. 7 to 12, the song titles and musical scores are displayed in color. On the right side of the keyboard 2, in addition to a power switch 6, a one-key play switch 7 and a music selection mode switch 8 are provided. The one-key play switch 7 is a switch for performing one-key play in which each note is emitted one by one each time it is operated, and the song specification mode switch 8 is a switch for performing a one-key play performance in which musical notes are emitted one by one each time the switch is operated. This is a switch for switching to a mode that specifies 10 songs.

Further, on the left side of the right sound emitting section 3, there is provided an insertion slot 10 for inserting a floppy disk 9, which will be described later. Nothing is recorded on the first track of this floppy disk 9, and the video information of the title of the 10 songs recorded on the floppy disk 9 is recorded on the second track, as shown in FIG. has been done. Then, one screen worth of score video information is recorded in the even-numbered tracks 11 after the third track, and the score video information is recorded in the odd-numbered tracks 11 inside the track 11 where this score video information is recorded. Corresponding musical tone information is recorded, and musical score video information and musical tone information are read out in parallel from these two sets of tracks 11 and 11.

Overall circuit configuration> When the operation signal of the song designation mode switch 8 is given to the image processing CPU 20 shown in FIG.
A control signal is sent from U20 to the servo circuit section 22, the servo motor 23 is driven, the floppy disk 9 is rotated, and the magnetic disks 12 and 13 are slid in the radial direction of the floppy disk 9. 1. 1st
, the second track is read. Further, when the song designation data from the keyboard 2 and the operation signal of the one-key play switch 7 are given to the image processing CPU 20,
Similarly, a control signal is given to the servo circuit section 22 from the image processing CPU 20, and the first track 1 of the tracks 11 in which the corresponding song is stored is stored on the floppy disk 9.
1 is read.

The music score video information for one screen read from the track 11 of the 7o disc 9 via the magnetic head 12 is processed by the playback processing circuit section 14 as R (red), G (green), B (blue).
are extracted as each analog signal and sent to the A/D converter 15.
The digital signal is converted into a digital signal and stored in the one-screen musical score memory section 16. The display data for one screen stored in the one screen score memory section 16 is read out sequentially, and RlG, B
R drive circuit t7 for each signal. GII! b circuit 18, B
The signal is sequentially applied to each pixel of the display section 5 through the drive circuit 19 and displayed. The display pixels of this display 115 are specified in accordance with the scanning signal from the scanning electrode drive circuit 21 driven by the image processing CPU 20, and the display data writing, reading, and reproduction processing circuit section of the one-screen musical score memory section 16 is performed. 14. The A/D converter 15 is driven by the image processing CP
This is done based on the control signal from U20.

Furthermore, the musical tone information read out from the track 11 of the floppy disk 9 via the magnetic head 13 is displayed on the display section 5.
The amount of information corresponds to one screen's worth of display data displayed on the screen, and from this musical tone information, a key code indicating the pitch is extracted via the reproduction processing circuit section 24 and stored in the one screen key code memory section 25. Retained. The pitch data and chord (chord) data corresponding to the key code in the one-screen key code memory section 25 are sent to the musical tone generation circuit (melody) 27 via the musical tone generation processing CPU 26. The signal is applied to a musical tone generating circuit (code) 28, where a melody musical tone signal and a chord musical tone signal are generated, and are emitted from a speaker 30 via an amplifier 29.

The operation signal of the one-key play switch 7 is sent to the address designation-R/W control circuit 32 as a next address instruction signal, and the read address for the one-screen key code memory section 25 is incremented by one.

The next sound begins to be emitted. Data is written to this one-screen key code memory section 25 by the CPU for musical tone generation processing.
This is performed based on an address signal and an R/W (read/write) signal from an addressing/R/W control circuit 32 driven by an address control circuit 26.

The musical tone information read from the floppy disk 9 also includes an end code that indicates a break between each screen's worth of information, and a final code that indicates the end of the song.
When either of these two codes is read from the one-screen key code memory section 25, it is detected by the end/final code detection section 33, and when the end code is detected, a screen change instruction is issued. A signal is output to the image processing CPU 20, and when a final code is detected, an initialization signal is output to the image processing CPU 20. A 0 screen change instruction signal is output to the image processing CPU 20.
When the image processing CPU 20 is given to the servo circuit unit 22, a control signal for reading information of the next track 11.11 is received from the image processing CPU 20, and the image processing CPU 20
A control signal for resetting the address is given from U2Q to CP02B for 5kTI generation processing, the next screen is displayed on the display section 5, and the corresponding musical tone can be emitted by one-key play. Further, when the initialization signal is given to the image processing CPU 20, this image processing CPU
From U20 to servo circuit section 22 and CPU for musical tone generation processing
A control signal for stopping the drive is given to 26.

The operation signal from the E one-key play switch 7 is given as a write address reset signal to the address designation φR/W control circuit 32, and is also given as a write address reset signal to the C for musical tone generation processing.
It is also given to the PU 26 as a start signal for musical tone generation processing.

Configuration of the one-screen score memory section 16> The specific circuit of the one-screen score memory section 16 is configured as shown in FIG.
, B are preset to the R screen memory 50, 6 screen memory 51, and 8 screen memory 52 via gates 34, 35, and 36, respectively, and are preset to the R drive circuit 17 via gates 40, 41, and 42. , G drive port i! 818, B drive circuit 19, or gates 37, 38.
8 screen memory 53.0 screen memory 54.8 via 39
Preset in the screen memory 55 and gates 43, 44 .
The signal is output to the R drive circuit 17, G drive circuit 18, and B drive circuit 19 via 45. The reason why two sets of one-screen memories are provided is that one is used to read one screen of data from one screen memory, and the other is used to write one screen of data from the floppy disk 9 to the other screen memory when switching screens. This is to display the next screen immediately and to perform screen switching without interruption. .

A write address signal and a read address signal from the image processing CPU 20 are applied to the R, G, and B screen memories 50, 51, and 52 via gates 46 and 47, respectively. screen memory 53.54.55
Similarly, a write address signal and a read address signal from the image processing CPU 20 are applied via gates 48 and 49, respectively, and an R/W signal from the image processing CPU 20 is also applied to these screen memories. .

Among the above gates, R, G, B screen memory 50.51.
52 input side and write address side gates 34, 35.
36.46. and R, G, B screen memory 53.54.5
5 output side and read address side gate 43.44.4
The switching signal from the image processing CPU 20 is directly applied to the gate 5.49, and the above switching signal is applied to the other gates 37 to 42, 47, and 48.
Each screen memory write, given by flipping through
Reading is performed alternately.

Configuration of single-screen key code memory unit 25 The specific circuit of the single-screen key code memory unit 25 is configured as shown in FIG. The key code is preset in the key code memory section 69.

It is outputted to the musical tone generation processing CPU 26 through the gate 63, or is preset to the key code memory section 70 through the gate 62, and outputted to the musical tone generation processing CPU 26 through the gate 64. The reason why two memory sections are provided in this manner is similar to the one-screen music score memory section 16 described above, and when musical tone information corresponding to one screen is read out from one memory section, the floppy disk 9 is stored in the other memory section. This is to write musical tone information corresponding to one screen from 1 to 3, so that the next musical tone can be emitted immediately after the one-key play performance of one screen's worth of musical scores is completed, and the musical tones can be emitted without interruption.

The key code memory section 69 contains the address designation and
A write address signal and a read address signal from the R/W control circuit 32 are applied via gates 65 and 66, respectively, and a write address signal from the address designation/R/W control circuit 32 is also applied to the key code memory section 70. Addressing and read address signals are exchanged via gates 67 and 68, respectively, and both memory sections 69 and 70 are also supplied with R/W signals from addressing/R/W control circuit 32. Among the gates mentioned above, the gates 61, 65, . and gate 6 on the output side and address side of the key code memory section 70
The switching signal from the CPU 26 for musical tone generation processing is directly applied to gate 4.68, and the other gates 62.83.66.6
7, the switching signal is applied to the inverters 71, 72, 73 .
74, each memory section 69.70
Writing and reading are performed alternately.

[Operation of the embodiment] Next, the operation of this embodiment will be described.

To perform one-key play while displaying the score, first turn on the power switch 6, insert the floppy disk 9 into the insertion slot 10, and turn on the song designation mode switch 8. Then, the operation signal of the song designation mode switch 8 is given to the image processing CPU 20, and the 1 image processing C
The PU 20 gives the servo circuit section 22 a control signal for reading the first and second tracks of the floppy disk 9,
The switching signal for the one-screen musical score memory section 16 is set to high level, the gates 34 to 36, and 46 are opened, and the screen memories 50 to 52 can receive write address signals and the like. As a result, the video information of all songs on the second track by one person is read out, and is passed through the playback processing circuit section 14 and the A/D converter 15 to the R, G, and 8 screen memories 50 to 52 of the single screen score memory section 16.
is preset to . After this preset, C for image processing
The PU 20 sets the switching signal to low level and the screen memory 50
52 by giving read address signals to the screen memories 50 to 5.
The program title video information in 2 is output to the display unit 5 and displayed as shown in FIG.

Next, for each of the displayed 10 song titles, the corresponding l! (in this case, the 1st tm) is turned on. Then, the song designation data of "1" corresponding to this operation key and the operation signal of the one-key play switch 7 are sent to the image processing CPU 20, and the image processing CPU 20 sends the servo circuit section 22 the third.
A control signal for reading the first sector of the fourth track is given, and a switching signal for the one-screen musical score memory aB18 is given.
The gates 37 to 39 and 48 are left open at the OW level and write address signals and the like are applied to the one-screen memories 53 to 55. As a result, the musical score video information of the first m-th plane shown in the upper part of FIG. 8 is read out.

Reproduction processing circuit section 14. A/D conversion! 115, it is preset in the screen memories 53 to 55 of the one-screen musical score memory section 16. After this preset, the image processing CPU 20 sets the switching signal to high level, sends a read address signal to the screen memories 53 to 54, outputs the score video information in the screen memories 53 to 54 to the display section 5, and displays the image in the upper part of FIG. Display as shown.

Then, when the one-key play switch 7 is turned on, the operation signal of the one-key play switch 7 is applied to the address designation-R/W control circuit 32 to be reset, and also applied to the CPO 26 for musical tone generation processing.

Then, the CPU 26 for musical tone generation processing specifies the address R/
One-screen key code memory section 25 through W control circuit 32
The switching signal for the gate 62 is set to low'w level.
．． 63. 66. 67 is opened and the key code memory section 7 is opened.
0 to enjoy the write address signal. As a result, the musical tone information read from the floppy disk 9 and corresponding to the musical score video information on the first screen shown in the lower part of FIG. Preset. This post-preset musical tone generation processing CPU 26 sets the switching signal to high.
level and sends a read address signal to the key code memory section 70 to make the code data and pitch data of musical tone information in the key code memory section 70 readable. When the one-key play switch 7 is operated in sequence, a next address instruction signal is given to the address designation/R/W control circuit 32, the read address signal for the key code memory section 70 is incremented, and the code data and pitch data are incremented. The sound generation circuit (melody) is developed.27. The code data is given to the musical sound generation circuit (code) 28, and the musical sound is emitted sequentially. In this case, if code data such as C*aj or G7Lh is read out, the next pitch data is also read out. It will be done.

In this way, the content of the one-key play performance can be known in response to the one-key play performance.

Also, musical score video information and musical tone information are read out from the above-mentioned screen memories 53 to 55 and the key code memory section 70, and the first
While the musical score is displayed on the screen and played, the switching signal is at high level and the gates 34 to 36, 46, 61, .
65 has also been developed, and the musical score video information and musical tone information on the second screen shown in FIG.
At this time, the image processing CPU 20. C for musical sound generation processing
From the PU 26, the screen memories 50 to 52. A write address signal is given to the key code memory section 69.

Then, when the end code (END) indicating the end of the first screen is read out from the key code memory unit 70, the image processing CP
A screen change instruction signal is given to U20, and as a result, the image processing CPU 20 reads out the score video information of the second screen from the screen memories 50 to 52 of the one-screen score memory section 16, and displays it on the display section 5 as shown in FIG. In addition to displaying
The score video information on the third screen is read out from the floppy disk 9 through the servo circuit section 22 and stored in the screen memories 53 to 5.
Preset to 5. At the same time, the image processing CPU
20 gives an address reset control signal to the musical tone generation processing CPO 26, and as a result, the musical tone generation processing CPO 26
02B reads the musical tone information corresponding to the musical score on the second screen from the key code memory section 69 of the one-screen key code memory section 25 and causes the musical tone to be emitted, and also in parallel with the musical score video information on the third screen. Musical tone information corresponding to the third screen read from the floppy disk 9 is preset in the key code memory section 70.

In this way, at the same time as the one-key play performance of the musical score on the first screen ends, the musical score on the second screen is displayed, the musical tone corresponding to the second screen can be played in one-key play, and the musical tone is emitted without interruption.

In this way, the screen memories 50 to 52, the key code memory section 69, and the screen memories 53 to 55. Writing and reading of the key code memory section 70 are performed alternately, and the musical score on the third screen in Figure 1O, the musical score on the fourth screen in Figure 11, and the musical score on the fifth screen in Figure 12 are displayed, and one-key play is performed. The final chord (FINA) is played, and when the performance is finished, the final chord (FINA) is played.
L) is read out, and as a result, end/final code is detected! An initialization signal is given to the image processing CPU 20 through 33. This allows 1 image processing CPU
20 again reads out the video information of the self-reflection of all the songs shown in FIG. 7 from the floppy disk 9 and displays it on the display section 5. In this way, the selection of a song can be made immediately after the one-key play performance is finished. If another song is selected here, the musical score video information and musical tone information are read from the corresponding tracks 11 and 11 of the floppy disk 9, and the musical score is displayed and one-key play is performed in the same manner.

In this embodiment, two memories are used to store musical tone information and score video information, and in addition to information during one-key play performance,
Since the information for the next one-key play performance is also read out from the floppy disk 9 and stored in advance, even a long piece of music can be played without interruption in one-key play.

In this case, the number of memories is not limited to two, but may be three or more.

In addition to the floppy disk 9, ROM packs, RAM packs, magnetic tapes, laser discs, etc. may be used as means for storing musical score video information and musical sound information, and musical sound information may include rhythm, timbre, volume, etc. It may also include multiple musical sounds with an unsampling effect. Accordingly, the music score video information may include the rhythm sound source base, timbre, volume, and lyrics, or the music score video information may include the scores of multiple instruments. It may also be in the form of a complete score, and furthermore, a cursor or the like may be added to and displayed on the currently emitted note of the musical score displayed on the display section 5, the color of the note may be changed,
Notes may be reversed in black and white, and the one-key play switch 7 may be any other device such as a specific key on the keyboard 2 or a foot pedal.

[Effects of the Invention] As described above, the present invention stores musical score video information indicating the content of one-key play performance in the memory of the electronic musical instrument, and displays the musical score sequentially in accordance with one-key play performance. , you can directly see the contents of a one-key play performance without having to prepare a sheet of music that shows the performance content and turn the pages one by one, and you can learn in detail how to play each note of the sheet music. It is suitable for music education, and since the entire score is displayed, you can see the general flow of the whole sheet, which is convenient for music study. Since the information changes, it is possible to know which part is currently being played, and to know the progress of the song in detail.

[Brief explanation of drawings]

1 and 2 are overall external views of an electronic musical instrument with a display device, and FIG. 3 is a diagram showing a floppy disk 9. FIG. 4 is an overall circuit diagram of the electronic musical instrument with a display device, FIGS. 5 and 6 are specific circuit diagrams of the single-screen score memory section 16 and the single-screen key code memory section 25, and FIG. 7 is the display section 5. 8 to 12 are diagrams showing the contents of the music score video information displayed on the display section 5 and the corresponding musical tone information. 2...Keyboard, 5...Display section, 7
・・・・・・One key play switch, 9・・・・・・
Floppy disk, 16... Single screen music score memory section, 20... CPU for image processing, 25...
. . . Single screen key code memory section, 26 . . . CPU for musical tone generation processing, 33 . . . End/final code detection section. Patent Applicant Casio Computer Co., Ltd. 2nd Floor C-te 1 person 2-, IJ surface key coat method Figure 1

Claims (2)

[Claims] (1) A storage means for storing music score video information and musical sound information corresponding thereto; a reading means for reading out the music score video information and musical sound information from this storage means; A display device comprising: an operating means for sequentially emitting corresponding musical tones for each operation; and a display means for displaying a musical score based on the musical score video information read by the reading means. Comes with an electronic musical instrument. (2) a storage means for storing music score video information and musical sound information corresponding thereto; a reading means for reading out the music score video information and musical sound information from this storage means; an operating means for sequentially emitting corresponding musical tones for each operation; a display means for displaying a musical score based on the musical score video information read by the reading means; and an operating means for the musical score displayed by the display means. a detecting means for detecting the end of the performance by the operating means; when the detecting means detects the end of the performance by the operating means, the reading means reads the next video information from the storage means and displays it on the display means; What is claimed is: 1. An electronic musical instrument with a display device, comprising: display switching means for switching the display;