JPS6237791B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a binary information reproducing apparatus that reads and reproduces binary information from a recording medium on which binary information is recorded, and a recording medium thereof.

In connection with the patent application, the patent applicant:
A patent application in which the present invention is applied to an electronic musical instrument with an automatic performance function (Japanese Patent Application No. 83585-1985), a patent application in which the invention is applied to an automatic accompaniment device (Japanese Patent Application No. 56-9410), and a patent application in which the invention is applied to musical scores ( (Special Application No. 55-83582)
is going on.

One method for recording and reproducing information is, for example, printing a barcode on a medium and reading it manually or automatically using a barcode reader.

When this barcode is used to express chord information shown on a musical score, for example, when expressing the chord name shown in Figure 1, it specifies the type of chord, such as major, minor, seventh, etc. If it takes 4 bits to specify the root note and 4 bits to specify the root note, then 24 measures x 8 bits =
Requires 384 bits. Recording with barcodes generally uses highly redundant codes such as "3 out of 5", so the number of bars increases further, and when rhythm names and various control codes are added, It is impractical as it requires a large number of bars.

The present invention has been made in view of the above points, and is a binary information reproduction system in which binary information is compressed and recorded on a recording medium, and after reading the binary information, the original information is reproduced. The purpose is to provide devices and their recording media.

That is, the first invention relates to a binary information reproducing device in which a reader reads and reproduces the binary information from a recording medium in which the binary information is recorded, and in which the binary information on the code table area recorded on the recording medium is read and reproduced by a reader. Form a conversion table from the code data,
This conversion table describes the relationship between a series of symbol data on the table reference area for referencing code data and the above code data in a form where the symbol data and code data correspond to each other, and performs the conversion. The present invention is characterized in that a conversion means converts a series of symbol data on a code table area using a table to obtain corresponding code data.

Further, the second invention relates to a recording medium, and includes a code table area for recording code data that is recorded in a predetermined order and becomes converted data after being read by a reader, and a code table area that is formed after being read by a reader. It is characterized by comprising at least a table reference area for recording a series of symbol data for referencing the code data described in the conversion table, and a separate area for separating the code table area and the table reference area. do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to recording and reproducing data of an electronic musical instrument will be described in detail below with reference to the drawings.

Figure 2 is a diagram showing the external appearance of an electronic organ. In the figure, 1 is the organ main body, and on this main body 1 are keyboards 2,
Operate the setting switch 3, power switch 4, and barcode reader 9 to set the timbre of the musical tone (determined by the waveform, envelope, filter characteristics, etc.) and various rhythms to read the bar printed on the score. A changeover switch 5 for switching whether or not to read a code, a volume switch 6, a speaker 7, etc. are provided. Further, the main body 1 is connected to a barcode reader 9 via a cord 8.

The circuit configuration of this electronic organ is as shown in FIG. That is, the barcode shown on the musical score 10 is read by a barcode reader 9, converted into a digital signal by an amplifier circuit 11, and then sent to a control circuit (for example, a conventionally known microprocessor). The setter includes an arithmetic circuit for performing various arithmetic processes, a memory circuit for storing various data and conversion tables, etc.) 12. The control circuit 12 provides an accompaniment sound output command to the accompaniment sound source circuit 13 from the time the start command is supplied, based on information read by scanning the barcode reader 9. The start command is supplied at the timing when the rhythm start switch of the setting switches 3 is operated, or at the timing when the key is operated after the synchro start switch among the setting switches 3 is operated and set. .

Then, the accompaniment sound source circuit 13 outputs, for example, chord tones, rhythm tones, etc. based on the accompaniment sound output command given.
Bass sounds are sequentially output in a predetermined rhythm pattern. This output is then output from the main sound source circuit 1, which selectively outputs musical tones based on keyboard input and switch input (given from keyboard 2 and setting switch 3).
The output signal is supplied to the mixer 15 along with the musical tone output of No. 4, and after being mixed by the mixer 15, it is output via an amplifier and a speaker (not shown).

Therefore, the barcode reader 9 and the amplifier circuit 1
The details of 1 are as shown in FIG. That is,
At the tip of the barcode reader 9, there is a light emitting device that converts the difference in light reflectance into an electrical signal (the magnitude of current).
It has a photoreflector 16 which is a light receiving element.
This output is then amplified by an operational amplifier 17 and then supplied to a differentiating circuit 18. The differentiated signal is then supplied by the differentiating circuit 18 to an operational amplifier 19, which is a bistable circuit, and becomes a logic signal.

When the barcode reader 9 thus configured scans, for example, an FM coded barcode (FIG. 5a) as shown in FIG. 5, the output of the operational amplifier 19 becomes as shown in FIG. 5B. In this case, the number of times the "High" level and "Low" level are inverted in one bit period corresponds to the logical values "1" and "0". When manually operating the barcode reader 9, there is of course no problem if scanning is performed at a constant speed, but even when scanning is performed at an arbitrary speed, the 1-bit time length is variable under the control of the control circuit 12, and the immediately preceding scan is performed. If the bit time length is adopted as the bit time length, misrecognition can be prevented.

Next, a musical score applicable to the electronic organ configured as described above will be explained. Now, a musical score having a barcode corresponding to the musical score shown in FIG. 1 will be explained.

That is, the chord progression of the musical score shown in FIG. 1 is as follows.

Em, Am, B ₇ , Em, Em, Em, Am, B ₇ ,
Em, Em, G, Em, G, Em, Bm, Am, Am,
_B7 , _B7 , Em, Am, _B7 , Em, Em.

Therefore, this code is now converted into the data shown in FIG. 6A and B. For example, in the above chord progression, the first chord "Em" has a "minor" chord type and the root note is "E", so the corresponding chord is "00010100", and the next chord "Am" ” is similarly “00011001”.

By the way, there are five types of chords that appear in this musical score: "Em", "Am", "B ₇ ", "G", and "Bm" as mentioned above. Numbers 0-4, i.e. "0, 0, 0, 0" ~
If these registered code numbers 0 to 4 are associated with "0, 1, 0, 0" and used as symbol codes to indicate the chord table, the above chord progression will be:
It will look like this:

0, 1, 2, 0, 0, 0, 1, 2, 0, 0, 3
0, 3, 0, 4, 1, 1, 2, 2, 0, 1,
2, 0, 0.

FIG. 9 shows the chord progression converted into binary information as described above. That is, these three lines of data correspond to three lines of the barcode. In FIG. 9, areas (1), (12), and (28) each indicate the start mark of the row (see FIG. 8). Also, (2) is the area for specifying the type of rhythm, and in this case, the code "0101" specifying slow rock is set. Note that a table showing the relationship between rhythm types and chords is omitted. Areas (3) to (7) are code table areas where code data that will be converted data in a conversion table that will be formed later is recorded, and the arrangement order is determined by the relationship with the symbol data. This means that in the conversion table, multiple sets of code data and symbol data are written in correspondence with each other, and in the area of this code table, as mentioned above,
Codes corresponding to "Em", "Am", "B ₇ ", "G", and "Bm" are set.

Area (8), as shown in FIG. 6c, specifies a separator that separates the chord table area from the table reference area for storing actual chord progressions. The control code 1 and the numerical value "16" shown in FIG. 8 are set in areas (9) and (10) following this area (8). This control code 1 indicates that each step code added by 1 to the number indicated by the next 4-bit data corresponds to one measure, and in this case, the next 16 codes Specifies that the names are each one measure long. Note that this chord name basically specifies the length of 1/2 measure with one chord name.

Then, for the next area (11) and the second line area (27), line end marks are designated as shown in FIG. Furthermore, from the second row area (13) to the third
In the row area (39), data corresponding to the chord progression is set. That is, "0" is set in area (13) to indicate the chord "Em", followed by "Am", "B ₇ ", "Em", and so on.
Area (17) stores control code 2 (see Figure 8) that instructs the previous registration code to be repeated two more times, and the code "Em" set in area (16) is This indicates that it will continue for two more measures. Furthermore, areas (30) and (31) in the third line specify that the next eight chord names are each one measure long, similarly to areas (9) and (10) above.

Area (40) is a mark indicating the end of the chord progression as shown in Figure 8, and area (41)
is a mark indicating the end of data. Furthermore, the area (42) following this area (41) is a parity check area, and is a CRC (cyclic redundancy check) area.
Consists of 16-bit data.

The binary code information obtained in the above manner is
With FM coating as shown in Figure 5, the first
This is the barcode shown in the lower column 10a of the musical score 10 in Figure 0. Note that each line in FIG. 9 completely matches each line in FIG. 10. And furthermore, this sheet music 10
In the upper column 10b, a musical score similar to that in FIG. 1 is shown.

Next, the operation of this embodiment configured as above will be explained. That is, in the electronic organ of this embodiment, when automatic accompaniment is to be performed when playing the music indicated by the musical score 10, the changeover switch 5 is
After turning on the barcode reader 9 to enable operation, the barcode reader 9 scans the lower column 10a of the musical score 10. When this operation is sequentially executed for each row in the lower column 10a and the corresponding data is correctly written in the control circuit 12, the control circuit 12 enters a standby state in preparation for the next input start command.

That is, the control circuit 12 detects the separator mark in area (8), separates the chord table area from the table reference area, and converts the data in each area of the table reference area into chord data specifying each chord. Convert according to

For example, after the performer plays the melody of the first measure, when the rhythm start switch is operated to start the melody, the control circuit 1
2, first, the accompaniment sound source circuit 13 is instructed to play the chord "Em" specified in area (13) in FIG. 9 with the rhythm specified in area (2), that is, the slow rock rhythm. do. Therefore, the accompaniment sound source circuit 13 creates chord tones, rhythm tones, and bass tones according to the slow-lock rhythm pattern, and supplies them to the mixer 15. At the same time, the main sound source circuit 14 generates and outputs melody sounds in response to the player's playing of the keyboard 2, and provides them to the mixer 15. Therefore, the mixer 15 mixes the musical tones from the accompaniment sound source circuit 13 and the main sound source circuit 14, and outputs the mixed tones through the amplifier and the speaker.

Similarly, the accompaniment sound source circuit 13 sequentially outputs chord sounds, rhythm sounds, and bass sounds such as "Am", "B ₇ ", "Bm", etc., and mixes them with melody sounds according to the keyboard composition. A sound is emitted.

When the automatic accompaniment of the last bar of the musical score 10 is finished, the control circuit 12 enters a standby state and stops outputting musical tones.

As explained above, in this embodiment, musical score 1
0 chords, i.e. “Em”, “Am”, “B ₇ ”,
"G" and "Bm" are set in the chord table area and associated with the 4-bit registered codes 0 to 4, and in the table reference area, the chord progression is expressed using these registered codes, so each chord is 4 indicating the type
This method uses a combination of bit data and 4-bit data indicating the root note of a chord, that is, the amount of data is about half that of the method of indicating one chord name using 8-bit data. In addition, using the FM coating method, the final 16
By setting a bit parity check area, information compression has become possible.

In the above embodiments, the present invention was applied to data recording and playback of electronic musical instruments, but when inputting various data in a computer such as a small electronic calculator or a personal computer, the code table area and the table reference area are also used. Divide the data into
It is also possible to compress information on input data.

Moreover, although the above barcode was based on FM coating, it is also possible to use various methods such as RZ, NRZ, NRZI, PE, MFM, etc., and the form of the barcode is not limited to the above embodiments.

Further, in the above embodiment, the barcode reader is configured with a hand scanner, but a barcode reader that automatically reads barcodes may also be used.
The reading method is also not limited to the above embodiment.

As described above in detail, according to the binary information reproducing device and its recording medium of the present invention, a large amount of binary information can be stored in a data format including a code table area, a table reference area, and a separate area. The code data in the code table area is compressed and expressed, and the symbol data in the table reference area is converted into code data in the table reference area. The amount of binary information is reduced, allowing the recording medium to record a small amount, and erroneous recognition during reading can be improved, resulting in excellent effects.

[Brief explanation of the drawing]

FIG. 1 shows a conventional musical score, FIGS. 2 to 10 show an embodiment of the present invention, and FIG.
A perspective view of the external appearance of an electronic organ equipped with a barcode reader, Fig. 3 is a block circuit diagram of this electronic organ, Fig. 4 is a detailed view of the main part of Fig. 3, and Fig. 5 is a barcode and corresponding logic values. Diagram showing the relationship between
Figures 8 through 8 are diagrams showing various chords, Figure 9 is a diagram showing musical tone information of a piece of music based on the chords shown in Figures 6 through 8, and Figure 10 is a diagram showing the musical score of this example. FIG. 9... Barcode reader, 10... Sheet music, 10
a...lower column, 10b...upper column, 11...amplifier circuit, 12...control circuit, 16...photoreflector, 17, 19...operational amplifier, 18...
... Differential circuit.

Claims (1)

[Scope of Claims] 1. A code table area for recording code data that is recorded in a predetermined order and that will later become converted data, and a code table area that records code data that will be converted data that will be written in a conversion table that will be formed later. From a recording medium on which binary information is recorded, which has at least a table reference area that records a series of symbol data for reference, and a separate area that separates the code table area and the table reference area, a reader for reading information; and a reader for detecting information corresponding to the separate area from the binary information read from the recording medium by the reader, and matching the information corresponding to the code table area and the table reference area. a discrimination means for discriminating the information, and a conversion table in which multiple sets of the symbol data and the code data are described in correspondence based on the discrimination result of the discrimination means, and based on the contents of the conversion table, the conversion table is A binary information reproducing device comprising: conversion means for respectively converting the symbol data read from the reference area into corresponding code data recorded in the code table conversion area. 2. The binary information reproducing apparatus according to claim 1, wherein the binary information is recorded on the recording medium as barcode information, and the reader is a barcode reader. 3 A recording medium in which pre-recorded binary information can be read by a predetermined reader, and this recording medium contains a code that becomes converted data after being recorded in a predetermined order and read by the reader. A code table area for recording data; and a table reference area for recording a series of symbol data for referencing the code data, which is the converted data written in the conversion table formed after being read by the reader. A recording medium comprising at least the following:; and a separate area that separates the code table area and the table reference area. 4. Claim 3, characterized in that the binary information is recorded on the recording medium using barcode information, and this barcode information is read by the reader consisting of a barcode reader. Recording medium described.