JPH06195066A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To prevent protected data from being copied by disabling the data to be saved on another external storage medium when the protected data are fetched in an internal memory. CONSTITUTION:This electronic musical instrument consists of an electronic musical instrument body 1 and a disk module 2. Then the electronic musical instrument body 1 reads control data out of a floppy disk 40 and the operation of the electronic musical instrument body 1 is controlled with the control data. Further, copy information on the floppy disk 40 is also stored. When this floppy disk 40 is disconnected from the electronic musical instrument body 1 it is detected by a disconnection detecting means. When the disconnection is detected, it is judged whether or not the copy information inhibits the control data from being copied, and when the control data are inhibited from being copied, the control data which are read out of the floppy disk and stored in a control data storage area are erased. Therefore, the data can be prevented from being copied due to the saving by connecting another floppy disk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument for inputting data to be used during a performance from an external storage medium, storing the data in an internal memory and playing the data.

[0002]

2. Description of the Related Art Some electronic musical instruments perform their performance by inputting their setting data (registration data) and control programs from an external storage medium such as a floppy disk.
In such an electronic musical instrument, in order to speed up the processing speed at the time of performance, these data are temporarily stored in the internal memory,
During performance, high-speed processing is performed by accessing this internal memory.

[0003]

By the way, the data stored in the internal memory can be written again in the external storage medium (floppy disk or the like) in order to save the data. Therefore, even if the manufacturer supplies the data with a floppy disk, etc., and protects the floppy disk itself with copy protection, it is possible to copy it by temporarily importing it into an electronic musical instrument and saving it on another floppy disk. Becomes

An object of the present invention is to provide an electronic musical instrument in which copying is prevented by preventing protected data from being saved in another external storage medium when the protected data is taken into the internal memory. And

[0005]

According to the present invention, there is provided an external storage medium storing control data for controlling an electronic musical instrument and copy information indicating whether or not copying of the control data is prohibited, and an electronic storage medium for storing the external storage medium. Means connected to the musical instrument body to enable reading / writing, control data storage means for storing the control data read from the external storage medium in the electronic musical instrument body, and copy information storage for storing copy information of the external storage medium Means, disconnection detecting means for detecting that the external storage medium is disconnected from the electronic musical instrument body, and disconnection of the external storage means is detected, and the copy information is for prohibiting copying. Data erasing means for erasing the data in the control data storage means.

[0006]

In the electronic musical instrument of the present invention, the main body of the electronic musical instrument reads the control data from the external storage medium, and the control data controls the operation of the main body. It also stores the copy information of the external storage medium. When the external storage medium is separated from the main body of the electronic musical instrument, the separation detecting means detects it. When disconnection is detected, it is determined whether the copy information is for prohibiting copying of control data, and if it is for prohibiting copying, it is read from the external storage medium and stored in the control data storage area. Erase the stored control data. This makes it possible to prevent copying by connecting another external storage medium and saving the data.

Here, the external storage medium being disconnected from the electronic musical instrument means that the floppy disk is pulled out from the slot, the floppy disk drive itself is disconnected from the electronic musical instrument body, and a storage device connected by a network. Is a concept that includes logging out of electronic musical instruments.

[0008]

1 is a block diagram of an electronic musical instrument according to an embodiment of the present invention. This electronic musical instrument comprises an electronic musical instrument body 1 and a disc module 2. The floppy disk 40 is inserted into the disk module 2. The data stored in the floppy disk 40 is transmitted to the electronic musical instrument body 1. The main body 1 has a switch circuit 17 including a keyboard, and when the player operates the switch circuit 17 or when the sequence data is input, a musical tone is produced based on it.

The electronic musical instrument body 1 is controlled by the CPU 10. The CPU 10 is provided with the ROM 12 via the bus 11,
A RAM 13, a communication interface 14, a panel interface 15, and a musical sound synthesis circuit 18 are connected.
The ROM 12 stores a control program for controlling the operation of the electronic musical instrument body. In addition, RAM13
There is provided a resist buffer 13a for storing resist data sent from the disk module and a protect flag register 13b which is set when the copying of the resist data is prohibited. The communication interface 14 is connected to the communication interface 34 of the disk module 2 via a cable,
Communication is performed using a predetermined protocol. The panel interface 15 includes a display circuit 16 provided on the operation panel,
The switch circuit 17 is connected. Switch circuit 17
Includes a keyboard as described above. The tone synthesis circuit 18 is a circuit that forms tone signals based on tone data input from the CPU 10. As the tone synthesis method, a basic waveform synthesis method such as a so-called FM method or a waveform memory method such as PCM can be adopted. Music synthesis circuit 18
The tone signal synthesized by is input to the sound system 19. The sound system 19 converts a digital musical tone signal into an analog signal and amplifies it. The amplified analog signal is produced by the speaker 20.

On the other hand, in the disk module 2, C
The PU 30 has a ROM 32, a RAM 33,
A communication interface 34, a panel interface 35 and a floppy disk interface 38 are connected. The ROM 32 stores a control program for controlling the operation of the disk module 2.
Further, the RAM 33 is provided with a buffer area for temporarily storing the data read from the floppy disk 40. The communication interface 34 is connected to the communication interface 14 of the main body 1 via a cable and performs communication using a predetermined protocol. The panel interface 15 has a display circuit 1 provided on the operation panel.
6, switch circuit 17 is connected. The switch circuit 17 includes a start switch, a stop switch, an eject switch, a record switch and the like. A floppy disk drive 39 is connected to the floppy disk interface 38. The floppy disk drive 39 receives the floppy disk 40. The floppy disk interface 38 controls the read / write operation of the floppy disk drive 39, and also controls the read / write data as a CP.
Send and receive with U30. A registration data storage area, a sequence data storage area, and a protect data storage area are set in the floppy disk 40.

FIG. 2 is a diagram showing the stored contents of the floppy disk. A resist data storage area 41, a sequence data storage area 42, and a protect data storage area 43 are set in the floppy disk 40. The registration data storage area 41 is provided with a panel registration data storage area 41a, a user tone color data storage area 41b, a user pattern data storage area 41c, and a rhythm sequence data storage area 41d. The panel registration data (41a) is data for instructing what function is assigned to each of the many key switches (switch circuits 17) provided on the panel of the electronic musical instrument body 1. The user tone color data (41b) is a data group for forming a tone signal of a certain tone color.

The user pattern data (41c) is data of the automatic accompaniment pattern set by the user. The automatic accompaniment pattern is pattern data consisting of a rhythm, a chord, and a bass sound in units of one to several measures. A plurality of automatic accompaniment patterns are stored in the area 41c. The rhythm sequence data (41d) is data that stores the combination order of the plurality of automatic accompaniment patterns. The sequence data (42) is data for automatically playing the electronic musical instrument body 1. The protect data (43) is data that prohibits copying of the above-mentioned data, and is data (program) for preventing this when copying is attempted by a so-called file copy function. Some floppy disks do not have this protected data stored. Note that other data can be stored in the floppy disk.

FIG. 3 shows the CPU of the disk module 2.
It is a flow chart which shows operation of 30. When the power is turned on, first, the initialization operation is executed at n1. This operation is an operation for resetting the buffer register and the like. Next, the panel switch 37 is scanned to detect the operation state of the panel switch (n2). When the start switch is turned on (n3), the automatic performance is started. In this case, it is judged whether or not the floppy disk 40 inserted at that time is protected (whether the protected data is stored) (n
4). When the electronic musical instrument body 1 is protected, a confirmation signal is sent to the electronic musical instrument body 1 (n5).

This confirmation signal is a signal for determining whether or not the electronic musical instrument body 1 is an electronic musical instrument capable of prohibiting copying corresponding to protection. After sending this confirmation signal, a reply is waited for a predetermined time (n6). If there is a response within this time, the registration data (41) is transmitted as an electronic musical instrument which can prohibit copying (n8). Next, the automatic performance operation is executed. The automatic performance operation is an operation of reading the sequence data (42) at predetermined timing and sending it to the electronic musical instrument body 1 until the sequence data (42) is completed (n9 to n11). After that, the other processing (n12) is executed. If there is no reply to the confirmation signal,
It is determined that the connected electronic musical instrument main body 1 does not have the copy prohibition function, and the registration data is not transmitted and the process directly proceeds to n12. The other process is a process of updating the display on the display unit.

On the other hand, if it is determined at n4 that the floppy disk 40 is not protected, the process proceeds directly to n8 without transmitting a confirmation signal and the registration data is transmitted.

If the eject switch is turned on as a result of the panel scan (n13), an eject signal is sent to the main body 1 (n14). When the other switches are turned on, the other switch process (n15) is executed. Other switch processing includes stop switch processing for stopping automatic performance when the stop switch is turned on, and sequence data transmitted from the main body 1 when the record switch is turned on (generated in response to keyboard operation of the main body 1 ), A record switch process for storing resist data and the like in the floppy disk 40.

FIG. 3B is a flow chart showing the interrupt operation. This operation is an operation for sending an active sense signal of a predetermined format to the electronic musical instrument body 1, and is about 5
It is executed every 00 ms. The electronic musical instrument body 1 receives this signal at predetermined intervals and detects that the disk module 2 is still connected (n36 to n in FIG. 4).
40).

FIG. 4 is a flowchart showing the operation of the CPU 10 of the electronic musical instrument body 1. First, the initialization operation is executed (n20). This operation includes an operation of clearing register data and returning to preset data.
Next, panel processing and keyboard processing are executed (n21). The panel processing is display processing or the like. Keyboard processing (n22)
This is an operation of controlling the on / off of the keyboard based on the on / off of the keyboard.

At n23, the input port is scanned. If there is an input event from the input port (from the disk module 2), the type of the signal is judged. If the event is a confirmation signal, it is determined that copying is prohibited data and the protect flag PROTECT (13b) is set to 1 (n26). After this, a reply signal is transmitted (n27). If the input event data is a sounding event signal of sequence data, (n2
8), write the data to the pronunciation buffer (n2
9). If it is the registration data (n30), this data is read into the registration buffer 13a (n3).
1). If it is an eject signal (n3
2), determine whether PROTECT is 1 or not (n33),
If PROTECT = 1, the resist buffer 13a
Is cleared (n34). After this, 0 is set to PROTECT (n35). Also, PROTECT = 0
In the case of, it is not necessary to erase the resist buffer 13a, and therefore the process proceeds to n41.

On the other hand, when there is no event data, the active sense signal is monitored (n36). If the active sense signal is not received for a predetermined time or longer, PROT
It judges whether ECT is 1 or not (n38), and PROTECT
If = 1, the resist buffer 13a is cleared (n39). After this, 0 is set in PROTECT (n40). In the case of PROTECT = 0, even if the active sense signal is not received for a certain period of time or more, the register buffer 13a is not cleared and n4 remains unchanged.
Go to 1.

At n41, rhythm processing based on the rhythm pattern is executed. Further, the sounding process is executed based on the contents of the sounding buffer (n42). Further, other processing is executed. (N43). For other processing, various data are output to the communication interface 14 and the disk module 2
It includes operations such as communication processing for transmitting to, and reception of tempo clock.

With the above operation, the data of the floppy disk protected is protected when the floppy disk is ejected and when the module connection is disconnected (when the active sense signal is not input). Is automatically erased and there is no risk of copying.

Although the floppy disk is used as the external storage medium in the above embodiment, the same applies to other memories such as a RAM card. Also, when connected via a network, login and logout with respect to the electronic musical instrument body may be handled as connection / disconnection.

[0024]

According to the present invention, when the control data stored in the external storage medium is read into the main body and the external storage medium is separated from the main body, the copy information prohibits copying. For example, since the control data in the main body is erased, it is possible to prevent copying by connecting another external storage medium to the main body and reading the control data.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic musical instrument that is an embodiment of the present invention.

FIG. 2 is a diagram showing stored contents of a floppy disk set in the electronic musical instrument.

FIG. 3 is a flowchart showing the operation of the disc module of the electronic musical instrument.

FIG. 4 is a flowchart showing the operation of the electronic musical instrument body.

[Explanation of symbols]

 1-Electronic musical instrument main body 2-Disk module 13a-Register buffer 13b-Protect flag register 40-Floppy disk

Claims (1)

[Claims] 1. An external storage medium storing control data for controlling an electronic musical instrument and copy information indicating whether or not copying of the control data is prohibited; and the external storage medium connected to an electronic musical instrument main body for reading / reading.
Means for enabling writing, control data storage means for storing control data read from the external storage medium in an electronic musical instrument body, copy information storage means for storing copy information of the external storage medium, external storage medium When the disconnection of the external storage means is detected and the copy information is for prohibiting copying, the control data storage means An electronic musical instrument comprising: a data erasing means for erasing the data of.