KR20000008626A - Apparatus and method of sheet music output in a printer - Google Patents

Abstract

PURPOSE: Recording and writing music to check one's music can not assure its exactness. CONSTITUTION: With the printed music, musicians can instantly check and correct errors, reviewing their performance and enhancing their playing ability. It includes a computer(11) which prints out normal text and images, electric music instruments(12) such as an electric keyboard, a digital piano and Music Instruction Digital Interface(MIDI) sequences that are plaid by users, a CPU(21) which analyzes data from a computer(11) or electric instrument(12) and controls a printer, a receiving buffer(22) which temporarily stores printing data from the computer(11), a program memory(23) which stores application programs for the CPU(21), a function-button input device(24) which receives commands from users, a font memory(25) which stores signals such as the plaid information of an instrument(12), notes, rests, the lengths of note, rhythm, and tempo, an image processor(30) which receives music data from CPU(21), forms output image data and prints it out, a printer buffer(41) which receives the image data and stores it by page, an engine starter(42) which starts the printer engine that receives print-out image data from a printer buffer and prints it out. By printing music using non-traditional means, users enjoy more diversity. It helps novice users to compose and arrangement music, enhancing their interest in music.

Description

Sheet music output device of printer and its output method

The present invention relates to a sheet music output device of the printer and a method of outputting the same, and more particularly, to an electronic musical instrument using a music instruction digital interface (hereinafter referred to as MIDI), a communication protocol applied between an electronic musical instrument and a computer. The present invention relates to a sheet music output device of a printer and a method of outputting the sheet music of a music being played through a printer.

In general, MIDI is applied between a computer and an electronic musical instrument to exchange information by performing communication. For example, when a sheet music is created by composing or arranging it on a computer, the sheet music data can be transmitted to the electronic musical instrument so that the performance can be performed.

By the way, when he plays directly, there is no way to check whether the performance has been performed properly. Therefore, the development of a device for receiving his or her own performance as a score is in progress.

In the conventional case, as a method of confirming his performance, the evaluation is performed with the help of another person, or by performing a recording while playing by using a separate recording device, the user himself listens and confirms later. However, this method has a problem that the work is cumbersome, and the accuracy of the confirmation result is reduced.

In addition, those who can play the piano above a certain level can play the music that they think can be played using the piano, but the ability to express the score is not much. Since there was a problem that the composition or arrangement work becomes difficult.

The present invention has been made in order to solve the above problems, the object is that when the user plays directly through the electronic instrument to ensure that the musical score corresponding to the performance is output through the printer to confirm the performance of the music accurately The present invention provides a sheet music output device and a method of outputting the same, which can simultaneously improve the convenience of the composition or arrangement.

In addition, another object of the present invention by generating an accompaniment chord in the performance information played through one electronic musical instrument to be output along with the musical score and the sheet music output device of the printer that can help the accompaniment of other instruments and its To provide an output method.

1 is a block diagram showing the configuration of a music score output apparatus of a printer according to the present invention;

2 is a flowchart illustrating the operation of the present invention;

3 is a diagram illustrating an example of MIDI data;

4 is a diagram showing an example of output sheet music.

<Description of Symbols for Main Parts of Drawings>

11: computer 12: electronic musical instrument

21: central processing unit (CPU) 22: receive buffer

23: program memory 24: function button input device

25: font memory 30: image processing device

41: print buffer 42: engine drive

According to a first aspect of the present invention for achieving the above object, a unit of data length according to a predetermined application program is a signal for Music Instruction Digital Interface (MIDI) input from an electronic musical instrument according to a predetermined application program. Data analysis means for outputting the music signal data corresponding to the interpretation; Image processing means for receiving music signal data from the data analyzing means to form and output output image data; And an engine driving means for operating the engine of the printer to receive the output image data from the image processing means and to print on the paper.

At this time, according to an additional feature of the present invention, the data analyzing means comprises a central processing unit for analyzing the performance music input from the electronic instrument and outputs the result to the image processing means; A program memory for storing an application program for an analysis operation of the central processing unit and providing the application program to the central processing unit; And a font memory for storing musical symbols for notes, rests, lengths, beats, speeds, etc. and providing them to the central processing unit.

On the other hand, according to the second aspect of the present invention for achieving the above object, by analyzing the MIDI signal input from the electronic musical instrument in a specific data length unit according to a predetermined application program note, rest, length, beat, speed, etc. Obtaining a music player call data by calling the music player call; A second step of generating output image data by using the music signal data of the first step; And a third step of operating the engine of the printer so that the output image data of the second step is printed on the sheet.

In this case, according to an additional feature of the present invention, the first process may include generating accompaniment code data according to the music signal data.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the sheet music output apparatus and the output method of the printer according to the present invention will be described in detail.

In the present invention, a printer has been widely used with the popularization of a PC, and is intended to realize a sheet music output function by using a hardware of a printer for printing a document or a picture.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram showing the configuration of an embodiment of a sheet music output apparatus of a printer according to the present invention.

Referring to Fig. 1, reference numeral 11 denotes a computer for outputting print data such as a general document or picture, and 12 denotes an electronic instrument such as an electronic keyboard, a digital piano, a MIDI sequencer, or the like, which is played by a user.

Also, reference numeral 21 denotes a central processing unit (CPU) for analyzing data input from the computer 11 or the electronic musical instrument 12 and controlling the operation of the printer, and 22 denotes a print received from the computer 11. 23 shows a receive buffer for temporarily storing data, 23 shows a program memory for storing an application program for the analysis operation of the central processing unit 21, and 24 shows a function button for receiving an external control command by a user. A device 25 denotes a font memory for storing musical symbols corresponding to notes, rests, lengths, beats, speeds, etc., in performance information input from the electronic musical instrument 12.

In addition, reference numeral 30 denotes an image processing apparatus which receives the music signal data from the central processing unit 21 to form output image data, and 41 denotes a print buffer which receives the output image data and stores it in units of pages. Reference numeral 42 denotes an engine driving device which operates a print engine to receive output image data in units of pages from the print buffer 41 and to perform printing.

Referring to the flowchart of Figure 2 attached to the operation of the present invention having the configuration as described above in detail as follows.

First, when operation of the system is started, various registers and flags are initialized (see S11), and a button scan of the operation panel is performed to confirm whether an external control signal is input through the function button input device 24, and at the same time, the program is executed. The application program is read from the memory 23 to execute a function function (see S12).

Thereafter, a direct memory access (DMA) interrupt for receiving printer input data is activated (see S13), and a direct memory access (DMA) interrupt for receiving MIDI input data is activated (see S14).

Thereafter, the central processing unit 21 analyzes and processes the performance information input from the electronic musical instrument 12 to generate MIDI data as shown in FIG. 3 (see S15). ) Stores the note information about whether the keyboard is pressed by interpreting the performance information, and extracts the stored note information one by one to read notes, rests, lengths, beats, and speed according to the pitch.

When the central processing unit 21 analyzes and processes MIDI data by the above operation, the central processing unit 21 performs a sheet music output routine. (See S16.) At this time, the sheet music output routine is As it is performed, a musical symbol such as a note or a comma is called from the font ROM 25 and output to the image processing apparatus 30.

The image processing apparatus 30 interprets the input data to generate output image data as shown in FIG. 4 (see S17). In this case, the MIDI data is composed of a status byte and a data byte, Fast, note-on (key pressed) and note-off (key-released) results are shown, so that it is possible to convert them into sheet music. In the above operation, the image processing apparatus 30 interprets data coming into a specific channel into performance data of a guitar or drum, converts it into accompaniment chord data scores, generates accompaniment chords, and enters data into another channel. Can be interpreted as general performance information and can be expressed as notes, rests, etc. on the staff. As a result, as time passes by the length of one beat in a word, note information input to the code analysis table is analyzed to generate the most reasonable code.

For example, as shown in Figs. 3 and 4, if the delta time is 0, the starting position is 4/4 beats, 32-notes / 24 MIDI clocks, so one time is 24 * 4. = 96 That is, if the elapsed time is 96, one beat becomes the last position. In addition, the negative length is the value of the note-off time minus the note-on time point. That is, it shows the length while a key is pressed. When the length of the sound is determined, a comma is occupied by the elapsed length without the keyboard being pressed.

Thereafter, when output image data is output from the image processing apparatus 30 to the print buffer 41 (see S18), the engine driving unit 42 drives the engine mechanism for image output so that the sheet music is printed. (See S19)

On the other hand, in the case of document or picture data which is general in the present invention, the data input from the computer 11 is temporarily stored in the receive buffer 22 in the central processing unit 21 and analyzed and the image processing device If output to 30, the print is passed through the print buffer 41, the printing is performed according to the operation of the engine drive device (42).

According to the present invention as described above, since the MIDI file processing part is already inserted in the main program, adding the sound engine hardware part makes it possible to construct a complex product that can also be used as a printer and an external sound module. This is done by outputting a message indicating a printing operation on the printer driver, or outputting predetermined music. In addition, when used in conjunction with a master keyboard without a sound engine, it can be a sound printer that listens to the performance of the master keyboard and outputs scores.

The sheet music output device and the output method of the printer according to the present invention as described above can achieve a variety of functions by having a sheet music output function in addition to the functions of a general printer, even those who are not experts can compose and arrange It can help you to improve your interest in music.

In addition, since the user can receive his or her own music as a score, it is possible to quickly and accurately determine whether his or her performance is correct or which part is wrong, thereby improving the user's music playing ability.

Claims (4)

Data analyzing means for interpreting a music digital interface (MIDI) signal input from an electronic musical instrument in a specific data length unit according to a predetermined application program, and outputting music signal data corresponding thereto; Image processing means for receiving music signal data from the data analyzing means to form and output output image data; And And an engine driving means for operating the engine of the printer to receive the output image data from the image processing means and to print on the paper. The method of claim 1, The data analyzing means may include a central processing unit which analyzes the playing music input from the electronic musical instrument and outputs the result to the image processing means; A program memory for storing an application program for an analysis operation of the central processing unit and providing the application program to the central processing unit; And a font memory for storing musical symbols for notes, rests, lengths, beats, speeds, and the like, and providing them to the central processing unit. A first step of interpreting a MIDI signal input from an electronic musical instrument in a specific data length unit according to a predetermined application program to obtain a musical reciprocal call data by calling a musical recital code for notes, rests, lengths, beats, and speeds; A second step of generating output image data by using the music signal data of the first step; And And a third step of operating the engine of the printer so that the output image data of the second step is printed on the paper. The method of claim 3, wherein The first step includes generating accompaniment code data according to the music signal data.