JP3460230B2 - Electronic musical instrument system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a general-purpose personal computer or the like as a predetermined program (performance software).
The present invention relates to an electronic musical instrument system that operates as an automatic musical instrument such as a sequencer, an automatic accompaniment apparatus, or an automatic rhythm musical instrument, and controls an external electronic musical instrument (sound source module or the like) to perform an automatic musical instrument.

[0002]

2. Description of the Related Art Recently, an electronic musical instrument system in which a general-purpose personal computer or the like is used to generate a MIDI signal such as performance sound data and an electronic musical instrument (sound source module) that operates based on the MIDI signal reproduces the performance sound. Is attracting attention as a new musical tone playing device. Such an electronic musical instrument system is configured by connecting a personal computer, which is an independent system, and a sound source module via a communication line. Therefore, various electronic musical instrument systems can be configured by appropriately combining a plurality of performance software for operating a personal computer as an automatic performance device and a plurality of tone generator modules.

[0003]

However, in the present electronic musical instrument system, the tone generator module only inputs the MIDI signal such as the performance sound data processed by the personal computer and executes the tone generation processing in response thereto. . That is, the tone generator module was only controlled by the control signal (MIDI signal) from the personal computer, and did not control the personal computer side.

Therefore, since the tone generator module operates only by inputting a MIDI signal such as performance sound data from the personal computer, if the operation of the personal computer is controlled by appropriately selecting from a plurality of performance software, which one will be used? Even such a sound source module could be freely controlled by one personal computer. Further, generally, a plurality of pieces of the same software can be created by a copying process, so that it is possible to appropriately employ the performance software illegally copied for one sound source module. This is because the personal computer and the sound source module, which are independent systems as described above, are connected by a common communication method called MIDI signal.

The present invention has been made in view of the above points, and an electronic musical instrument and a control device connected through a communication line.
In the electronic musical instrument system consisting of
To properly control the supply of performance data to electronic musical instruments
To provide an electronic musical instrument system that can
In addition, a control device and its controller in the electronic musical instrument system.
It is intended to provide a control method of .

[0006]

An electronic musical instrument system according to the present invention is an electronic musical instrument system including an electronic musical instrument and a control device, which are connected to each other by a communication line.
Wherein the control device, the control data from the electronic musical instrument to enter through the communication line, the contact on the basis of the control data
A judging means for judging the validity of the connection electronic musical instrument, the
If it is judged to be valid by the judgment means, performance data is generated.
And control means for performing control to, depending on the control of the control means
The generated performance data is output via the communication line.
The electronic musical instrument receives the performance data from the control device via the communication line,
It is characterized by comprising musical tone generating means for performing musical tone generating processing in response thereto and output means for generating control data for controlling the operation of the control device and outputting the control data via the communication line. is there. In addition, the system according to the present invention
The method is electronic musical instruments connected to each other by a communication line.
And a control device for controlling an electronic musical instrument system.
The control data from the electronic musical instrument is transmitted to the communication line.
Input to the control device via the
Based on the control data input to the
A determination step for determining the validity of the sub-instrument ,
If it is judged to be valid at the step, the performance data is generated.
Control step of performing control by the control device,
The performance data generated by the step control is
The output step of outputting through the signal line and the output step
The performance data output by the
And a step of inputting to the electronic musical instrument.
And

[0007]

The electronic musical instrument system according to the present invention is composed of a control device and an electronic musical instrument connected by a communication line. The electronic musical instrument has an output means for generating control data for controlling the operation of the control device and outputting the control data via the communication line . The control device inputs the control data from the electronic musical instrument via the communication line. , The connection based on the control data
The electronic musical instrument is provided with a determining means for determining the validity of the electronic musical instrument . The control means of the control device, before the said determining means
If the serial connected electronic musical instrument is determined to be reasonable,
Performs control to generate performance data . Performance data is generated Ru is output via the communication line. The electronic musical instrument inputs performance data from this control device through a communication line,
The musical tone pronunciation processing corresponding to it is performed. Thus, in the control device, playing de when determining the connected validity of the electronic musical instrument based on the control data supplied via the communication line from the electronic musical instrument, it is determined to be valid by the control device
Since it controls to generate the performance data, only when the relationship between the control device connected by the communication line and the electronic musical instrument is valid, that is, when the relationship is normal, the control device is operated to play the performance data. The musical tone generation means of the electronic musical instrument can output the generated musical tone and generate musical tone based on the musical performance data. In this way, security can be ensured by, for example, not performing an operation based on the illegally copied musical performance program. .

For example, conventionally, an electronic musical instrument operates according to an instruction of the MIDI signal by receiving the MIDI signal. However, in the present invention, the control data is output from the side of the electronic musical instrument to reverse the operation. It is possible to control the operation of the control device side. Thus, when considering a system of performance software that causes the control device to operate as an automatic performance device and an electronic musical instrument that operates according to performance data from the control device, in the correct combination, the performance software in the control device is electronic. The electronic musical instrument operates normally because it is determined to be valid based on the control data (such as the model code of the electronic musical instrument itself) from the musical instrument , whereas the illegally copied performance software does not correspond correctly. In a system used in combination with an electronic musical instrument, the control device does not determine that the electronic musical instrument is valid based on the control data from the electronic musical instrument, so that the control device should not be operated because it is not a normal operation. Therefore, the operation of the electronic musical instrument system can be stopped. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument system according to the present invention. In this example, the computer 1 is composed of a general-purpose personal computer or the like, and is composed of a program storage means 1a, a computer control means 1b, a MIDI output means 1c and a MIDI input means 1d. There are various other components, but they are omitted for convenience of explanation.

The program storage means 1a comprises a storage medium such as a floppy disk or a hard disk, and stores a performance software program for operating the computer 1 as an automatic performance device. The computer control means 1b includes a microprocessor unit (CPU), ROM, data and working RAM.
And a processing according to the program in the program storage means 1a, that is, an operation of the automatic performance device or the like. When operating as an automatic performance device, key-on information, key-off information,
Create various performance sound data such as velocity information and MID
It is output to the I output means 1c.

At this time, the performance program in the program storage means 1a contains a program for requesting the electronic musical instrument 2 to send the model code of the electronic musical instrument 2 connected via the MIDI line. . Therefore, the computer control means 1b sends the model code request data to the electronic musical instrument 2 side in accordance with the program.

Further, the computer control means 1b has a MI
The model code of the electronic musical instrument 2 is input from the DI input means 1d, and it is determined whether the model code is the same as the preset model code. If the model code is the same, the musical tone playing process is continued and the model code is continued. If is different, a warning that the model code does not match is displayed and the process is forced to end.

The MIDI output means 1c converts the performance sound data from the computer control means 1b into a MIDI signal and outputs it to the MIDI input means 2a of the electronic musical instrument 2 via a MIDI communication line, and at the same time, model code request data. Is converted into a format conforming to the MIDI standard and output to the MIDI input means 2a.

The MIDI output means 1c converts the performance sound data into M
Since it is converted into an IDI signal, data for requesting a model code cannot be converted into a MIDI signal by a normal MIDI conversion process. Therefore, in this embodiment, MIDI
System exclusive message in standard (SY
STEM EXCLUSIVE MESSAGES) is used to convert model code request data into MIDI signals. This system exclusive message is a MIDI signal message that is not compatible between manufacturers and can be freely used by each company.

The MIDI input means 1d is the MIDI output means 2 of the electronic musical instrument 2 to which the data for model code request is inputted.
The MIDI signal (including the model code) of the system exclusive message output from c is input, it is converted to the original model code data, and it is output to the computer control means 1b.

The electronic musical instrument 2 generates musical tones corresponding to respective musical instruments such as an electronic organ, an electronic piano, a synthesizer, an electronic rhythm musical instrument, an electronic wind instrument, an electronic stringed musical instrument, an electronic percussion musical instrument, and the performance control means 2b and MIDI. It is composed of an input means 2a and a MIDI output means 2b.
There are various other components, but they are omitted for convenience of explanation.

The performance control means 2b is composed of a microcomputer system including a microprocessor unit (CPU), a program memory (ROM), data and a working RAM, and can simultaneously generate musical tone signals on a plurality of channels. It is possible to generate a musical tone signal based on performance tone data (data conforming to the MIDI standard) that has passed through the MIDI communication line and the MIDI input means 2a. Further, the performance control means 2b outputs its own model code data to the MIDI output means 2c based on the model code request data inputted via the MIDI communication line and the MIDI input means 2a.

The musical tone signal generating method in the performance control means 2b may be any one. For example, a memory reading method for sequentially reading the musical tone waveform sample value data stored in the waveform memory according to the address data that changes corresponding to the pitch of the musical tone to be generated, or a predetermined frequency with the address data as phase angle parameter data. A well-known method such as an FM method for performing a modulation operation to obtain musical tone waveform sample value data or an AM method for performing a predetermined amplitude modulation operation using the address data as phase angle parameter data to obtain a tone waveform sample value data. You may employ suitably. The musical tone signal generated from the performance control means 2b is sounded through a sound system (not shown) including an amplifier and a speaker.

The MIDI input means 2a is a computer 1
The MIDI signal output from the MIDI output means 1c is input via the MIDI communication line, and the MIDI signal is converted into the original performance sound data and the data for model code request and output to the performance control means 2b. MIDI output means 2
c is an MI having a format such that the model code data output from the performance control means 2b conforms to the MIDI standard.
It is converted into a DI signal and output to the MIDI input means 1d.
The MIDI output means 2c is similar to the MIDI output means of the computer 1 in that it has a system exclusive message (SYSTEM EXCLUSI) in the MIDI standard.
VE MESSAGES) is used to convert the model code data into a MIDI signal for output.

The operation of the electronic musical instrument system of FIG. 1 will be described below with reference to the flow charts of FIGS. Figure 2
Is a computer control means 1b of the computer 1 of FIG.
It is a flowchart figure which shows an example of the process of. Hereinafter, this process will be described step by step.

Step 21: When the power is turned on, the computer control means 1b executes an initialization process,
Initial values are set for all data and working RAM, various registers, flags and the like that constitute the computer 1. Step 22: After performing a predetermined initialization process,
It is determined whether the current processing mode is the normal sequence reproduction processing mode, and the sequence reproduction processing (YE
If S), go to the next step 23, otherwise (N
If O), go to step 29.

Step 23: Read the model code of the electronic musical instrument previously written in the sequence data,
Write to a given register. Step 24: Send a model code request signal to the electronic musical instrument 2. That is, the model code request signal output from the computer control means 1b is the MIDI output means 1c, M.
It is taken into the performance control means 2b of the electronic musical instrument 2 through the IDI communication line and the MIDI input means 2a.

Step 25: The predetermined time has elapsed from the time when the model code request signal was transmitted in the previous step 24, or the model code returned by the processing of the electronic musical instrument 2 in FIG. It is determined whether the model code does not match, and if the predetermined time has passed or if the model code does not match (YES), the process proceeds to step 26, and the model code is returned from the electronic musical instrument 2 within the predetermined time, and If they match (NO), the process proceeds to step 28.

Step 26: Since the model code was not returned within the predetermined time in the previous Step 25, or even if it was returned, it was not the predetermined model code, a warning of model mismatch is displayed on the display means (not shown). Displayed). As a result, the operator is made aware that the playing program operating the computer 1 and the electronic musical instrument do not normally correspond. Step 27: Since the performance program and the electronic musical instrument do not correspond to each other, the subsequent processing is forcibly terminated. Therefore, if the playing program is illegally copied, the electronic musical instrument system will not operate.

Step 28: Since the model code was returned from the electronic musical instrument 2 within the predetermined time in the previous step 25, and the model codes coincided with each other, the sequence data generated by the subsequent processing is sequentially transferred to the electronic musical instrument 2. Send out and execute automatic performance processing. Step 29: Execute other processing other than the sequence data.

FIG. 3 shows performance control means 2 of the electronic musical instrument 2 shown in FIG.
It is a flowchart figure which shows an example of the process of b. Less than,
This process will be described step by step. Step 31: When the power of the electronic musical instrument 2 is turned on, the performance control means 2b executes an initialization process to set initial values in all data and working RAM, various registers and flags in the electronic musical instrument. Step 32: MI input from the computer 1 one after another via the MIDI communication line and the MIDI input means 2a.
Sound generation processing is executed according to the DI signal. Step 33: Execute processing according to the operating states of various operators of the electronic musical instrument 2 (not shown).

Step 34: It is judged whether or not the MIDI input means 2a receives the MIDI signal from the MIDI output means 1c on the computer side. If the MIDI signal is received (YES), the processing proceeds to step 35, and if not (NO). Proceeds to step 38. Step 35: Since it is determined that the MIDI signal is received in the previous step 34, it is determined whether or not the MIDI signal is the model code (model name) request signal of step 24 in FIG. 2, and the model code request signal (YES ), Proceed to step 36, otherwise (NO), step 3
Proceed to 7.

Step 36: The model code is output to the MIDI input means 1d of the computer 1 via the MIDI output means 2c as an exclusive MIDI standard. Step 37: Since it is determined in step 35 that the MIDI signal is not the model code request signal, the processing corresponding to the MIDI signal is executed. Step 38: Execute other various event processes and the like.

As described above, the electronic musical instrument system of FIG. 1 does not operate unless the model code stored beforehand in the sequence data and the model code of the electronic musical instrument 2 match. Even if the software for operating 1 is copied, the electronic musical instrument system will not operate unless the model codes of the electronic musical instruments match. That is, the software and the electronic musical instrument can be physically separated from each other, but when they are operated as an electronic musical instrument system, they can be said to be inseparable from each other.

FIG. 4 is a block diagram showing the schematic construction of another embodiment of the electronic musical instrument system according to the present invention. In FIG. 4, the same components as those in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In the embodiment of FIG. 1, when the model code of the electronic musical instrument is requested, and it matches the model code preset in the sequence data,
The computer control means 1b determines that the software on the computer 1 side and the model of the electronic musical instrument 2 normally correspond, and executes the automatic performance processing based on the sequence data. Therefore, different electronic musical instruments can be easily connected by changing the model code in the sequence data. Therefore, in the embodiment of FIG. 4, a common encryption means is provided for the computer control means 1B and the performance control means 2B, and when the encryption processing by both encryption means is the same, both are normally handled. I decided to judge.

In the embodiment shown in FIG. 4, the computer control means 1b is composed of a microcomputer system including a microprocessor unit (CPU), a program memory (ROM), data and a working RAM, as in FIG. The processing according to the program in the storage unit 1a is executed.

In the case of this embodiment, the computer control means 1b newly comprises a random number generation means 1e, an encryption means 1f, a comparison means 1g and a progress control means 1h according to the performance program in the program storage means 1a. It is like this. The random number generation means 1e is the program storage means 1a.
Random number data is generated according to the performance program therein and is output to the encryption means 1f and the MIDI output means 1c.

The MIDI output means 1c converts the performance sound data from the computer control means 1b into MIDI signals and outputs the MIDI signals to the MIDI input means 2a of the electronic musical instrument 2, and the random number data from the random number generation means 1e to the MIDI standard. It is converted into a MIDI signal having a format that matches and output to the MIDI input means 2a. The MIDI output means 1c is a system exclusive message (SYSTEM EXCL) in the MIDI standard as in the case of FIG.
USIVE MESSAGES) is used to convert random number data into MIDI signals.

The encrypting means 1f outputs the encrypted data obtained by encrypting the random number data from the random number generating means 1e by an arbitrary algorithm to the comparing means 1g. This algorithm may be of any type, and may be of any complex type since it need not be decoded.

The MIDI input means 1d inputs the system exclusive message of the MIDI signal output from the MIDI output means 2c in the electronic musical instrument 2, converts it into the original encrypted data, and compares it with the comparison means of the computer control means 1b. Output to 1g. The comparing means 1g compares the encrypted data from the encrypting means 1f with the encrypted data encrypted by the electronic musical instrument 2 inputted via the MIDI output means 2c and the MIDI input means 1d, and the both are compared. The determination result of whether they match is output to the progress control means 1h.

When the comparison result of the comparison means 1g is the same, the progress control means 1h permits the progress of the performance program as it is without making any change to the processing of the computer control means 1b, but the determination is reversed. If the results do not match,
It is determined that the performance program of the computer 1 and the electronic musical instrument 2 do not normally correspond, and the processing of the performance program thereafter is forcibly terminated.

The performance control means 2b is composed of a microcomputer system including a microprocessor unit (CPU), a program memory (ROM), data and a working RAM as in the case of FIG. Can be simultaneously generated, and a musical tone signal is generated based on performance sound data (data conforming to the MIDI standard) that has passed through the MIDI communication line and the MIDI input means 2a. Also, the encryption means 2
d is the random number data input via the MIDI communication line and the MIDI input means 2a is encrypted by the same algorithm as the encryption means 1f in the computer control means 1b, and the encrypted data is output to the MIDI output means 2c. To do.

The MIDI input means 2a is the computer 1
The MIDI signal output from the MIDI output means 1c is input via the MIDI communication line, and the MIDI signal is converted into the original performance sound data and random number data and output to the performance control means 2b. The MIDI output unit 2c converts the encrypted data output from the performance control unit 2b into a MIDI signal having a format that conforms to the MIDI standard and outputs the MIDI signal to the MIDI input unit 1d. MIDI output means 2
c is the same as the MIDI output means of the computer 1,
System exclusive message in the MIDI standard (SYSTEM EXCLUSIVE MESSAG
ES) is used to convert the encrypted data into a MIDI signal for output.

The operation of the electronic musical instrument system of FIG. 4 will be described below with reference to the flowcharts of FIGS. Figure 5
5 is a flow chart diagram showing an example of processing of a computer control means 1b of the computer 1 of FIG. Hereinafter, this process will be described step by step.

Step 51: When the power is turned on, the computer control means 1b executes an initialization process,
All data in computer 1 and working RA
Initial values are set in M, various registers and flags. Step 52: Random number generation means 1e and encryption means 1 in FIG.
A predetermined connection check process is executed by f, the comparison means 1g, and the progress control means 1h. Details of this connection check process are shown in FIG.

Steps 53 to 55: Processes A to C according to the contents of the program are executed. These processes A to C are arbitrary processes and are similar to the sequence reproduction process of FIG. Step 56: The same connection check process as in step 52 is executed. Since this step 56 is incorporated in the routine process, this connection check process is executed every time the routine process is performed.

FIG. 6 is a flow chart showing the details of the connection check process in steps 52 and 56 of FIG.
The connection check process will be described below step by step. Step 61: Random number generation means 1e generates random number data. Step 62: Output the generated random number data to the electronic musical instrument 2 as an exclusive message of the MIDI signal. Step 63: The random number data generated in step 61 is encrypted by the encryption means 1g by a function according to a predetermined algorithm.

Step 64: A step in which the random number data generated in the previous step 62 is transmitted to the electronic musical instrument 2 for a predetermined time, or the encrypted data returned by the internal processing of the electronic musical instrument 2 in FIG. It is determined whether or not the encrypted data encrypted in 63 does not match, and if a predetermined time has passed or if the encrypted data does not match (YES), the process proceeds to step 65, and the electronic musical instrument 2 encrypts within a predetermined time. If data is returned and it is determined that they match (NO), the process proceeds to step 64 and returns to the main routine of FIG.

Step 65: The encrypted data was not returned within the predetermined time in the previous step 64, or even if it was returned, it did not match the encrypted data encrypted by the encryption means 1f. Display means (not shown) indicating that the electronic musical instrument is not connected to the computer body
To display. As a result, the operator is made aware that the playing program operating the computer 1 and the electronic musical instrument do not normally correspond. Step 66: Since the performance program and the electronic musical instrument do not correspond to each other, the subsequent processing is forcibly ended. Therefore, if the playing program is illegally copied, the electronic musical instrument system will not operate.

FIG. 7 shows performance control means 2 of the electronic musical instrument 2 shown in FIG.
It is a flowchart figure which shows an example of the process of b. Less than,
This process will be described step by step. Step 71: When the power of the electronic musical instrument 2 is turned on, the performance control means 2b executes an initialization process to set initial values in all data and working RAM, various registers and flags in the electronic musical instrument 2. Step 72: The tone generation processing according to the MIDI signals successively input from the computer 1 via the MIDI communication line and the MIDI input means 2a is executed. Step 73: Execute processing according to operation states of various operators of the electronic musical instrument 2 (not shown).

Step 74: It is judged whether or not the MIDI input means 2a has received the MIDI signal from the MIDI output means 1c on the computer side. If the MIDI signal has been received (YES), the processing proceeds to step 75, and if not (NO). Proceeds to step 78. Step 75: Since it is determined that the MIDI signal is received in the previous step 74, it is determined whether or not the MIDI signal is the specific exclusive message including the random number data in step 61 of FIG. 6, and the specific exclusive message (YES) If No, the process proceeds to step 76. If not (NO), the process proceeds to step 77.

Step 76: The encryption means 2d in the performance control means 2b encrypts the random number data in the specific exclusive message with a function according to a predetermined algorithm. Then, the encrypted data is again used as data of the specific exclusive message by the computer 1
To the MIDI input means 1d. Step 77: Since it is determined in step 75 that the MIDI signal is not the specific exclusive message, the process corresponding to the MIDI signal is executed. Step 78: Execute other various event processes and the like.

In the electronic musical instrument system of FIG. 4, the random numbers generated by the random number generating means are encrypted by a program stored in the program storing means 1a in advance, and the same encrypting means is also provided in the electronic musical instrument 2. Provided, the processes A to C are not executed unless both encryption processes match. That is, the software and the electronic musical instrument can be physically separated, but both are operated as an electronic musical instrument system. In this case, the encryption processing of both parties must match, so even if you illegally copy the software and try to operate another electronic musical instrument, as long as the encryption processing does not match, it will work as an electronic musical instrument system. Disappear.

As in the embodiment of the present invention, it is sufficient that the electronic musical instrument and the computer are connected by a communication line. Therefore, a computer capable of multitask processing is used to perform the performance according to the present invention. Multiple software and electronic musical instrument systems can be operated simultaneously. Also, since it is only necessary for a set of playing software and corresponding electronic musical instruments to exist on such a network, it is possible to easily expand the functions (maximum polyphony etc.) of the electronic musical instruments corresponding to the playing software. You can

In the above-described embodiment, the illegal copy is performed when the electronic musical instrument side controls the operation of the control device by transmitting the processed data to the control device side through the communication line according to its own processing state. However, in addition to this, it is needless to say that processing data may be transmitted to the control device according to the operation state of the operator of the electronic musical instrument so that the controller can be operated by the operator. Nor.
At that time, the exclusive message in the above MIDI message may be used.

In the above-described embodiment, the case where the model code determination process or the connection check process is incorporated in the routine of the normal automatic performance process has been described as an example. The model code determination process or the connection check process may be executed at a ratio. Also,
The MIDI output means of the electronic musical instrument 2 converts the model code and the decryption result into a system exclusive MI.
Although it is assumed that the DI signal is output, a MIDI event generated inside the electronic musical instrument 2 can also be output as in the case of a normal electronic musical instrument.

[0052]

As described above, according to the present invention, the control device determines the appropriateness of the connected electronic musical instrument based on the control data given from the electronic musical instrument via the communication line, and determines the validity. If it is determined by the control device
Since control is performed to generate performance data, only when the relationship between the control device connected by the communication line and the electronic musical instrument is valid, that is, when the relationship is normal, the control device is operated to transfer the performance data. The musical tone generating means of the electronic musical instrument can output the musical tone and generate the musical tone based on the musical performance data. In this way, security can be ensured, for example, the operation based on the illegally copied musical performance program is not performed. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument system according to the present invention.

FIG. 2 is a flow chart showing an example of processing of the computer control means of FIG.

FIG. 3 is a flow chart diagram showing an example of processing of the performance control means 2b of FIG.

FIG. 4 is a block diagram showing a schematic configuration of another embodiment of the electronic musical instrument system according to the present invention.

5 is a flow chart diagram showing an example of processing of the computer control means 1b of FIG.

FIG. 6 is a flowchart showing details of the connection check process of FIG.

FIG. 7 is a flowchart showing an example of processing by the performance control means 2b of FIG.

[Explanation of Codes] 1 ... Computer, 1a ... Program storage means, 1b ...
Computer control means, 1c ... MIDI output means, 1d
... MIDI input means, 1e ... Random number generation means, 1f ... Encryption means, 1g ... Comparison means, 1h ... Progression control means, 2 ... Electronic musical instrument, 2a ... MIDI input means, 2b ... Performance control means, 2c ... MIDI output means 2d ... encoding means

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Claims (6)

(57) [Claims] 1. A electronic musical instrument system consisting of an electronic musical instrument connected together by a communication line control device, said control device, the control data from the electronic musical instrument to enter through the communication line, the The connected electronic musical instrument based on control data
A judging means for judging the validity of, if it is determined to be valid by the determination means, emitting performance data
Before and control means for performing control for antibody, the performance data generated by the control of the control means
Output means for outputting via a communication line, the electronic musical instrument, the musical sound generation means for inputting the performance data from the control device via the communication line, and performing a musical sound generation process in accordance therewith. And an output unit for generating control data for controlling the operation of the control device and outputting the control data via the communication line. In wherein the control device stores identification data operable electronic musical instrument in advance, the said control device
The determination means compares the input identification data with identification data stored in advance to determine the connected electronic data.
The electronic musical instrument system according to claim 1, wherein the validity of the musical instrument is determined . 3. The control device further comprises random number data generating means, and encryption means for encrypting the random number data generated by the random number data generating means in accordance with a predetermined algorithm. said output means outputs the random number data is also through the communication line, the determination means compares determined and the random number data encrypted by said control data input from the electronic musical instrument wherein the encryption means
The validity of the connected electronic musical instrument is determined by means of the output means of the electronic musical instrument, wherein the random number data input via the communication line is encrypted according to a predetermined algorithm. The electronic musical instrument system according to claim 1, wherein is generated as the control data. 4. A control device used in an electronic musical instrument system comprising an electronic musical instrument and a control device connected to each other by a communication line, wherein control data from the electronic musical instrument is input via the communication line, The connected electronic musical instrument based on the control data
A judging means for judging the validity of, if it is determined to be valid by the determination means, emitting performance data
Before and control means for performing control for antibody, the performance data generated by the control of the control means
An output means for outputting via the communication line . 5. stores the identification data of the operable electronic musical instrument in advance, the determination means, by comparing determination and identification data that is previously stored with the inputted identification data
The control device according to claim 4, wherein the control device determines the validity of the connected electronic musical instrument . 6. Electrons connected to each other by a communication line
Control method for electronic musical instrument system including musical instrument and control device
A is the control data from the electronic musical instrument via the communication line
Based on the step of inputting to the control device and the control data input to the control device,
A judgment step for judging the validity of the continued electronic musical instrument , and the performance data if judged to be valid in the judgment step.
Control step for performing control for generating
And performance data generated by the control of the control step
Is output via the communication line, and the performance data output in the output step is transmitted to the communication circuit.
Inputting to the electronic musical instrument via a line.
A control method characterized by the following.