JPH10124196A - Memory device of electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unnecessitate the re-setting of parameters, etc., before starting a performance and to obtain an electronic musical instrument being easy to treat, by backing-up the parameters, etc., in a non-volatile memory when a power switch is turned off and writing the parameters in RAM from the non- volatile memory when the power switch is turned on. SOLUTION: When the power switch 11 is turned off, data extended in a prescribed area of RAM 3 before a main power source is turned off is backed-up by a flash ROM 4 and, then, the main power source is turned off. When the power switch 11 is turned on, initialization setting is executed by following the turning-on of the main power source and data stored in the flash ROM 4 is extended in the prescribed area of RAM 3 and, then, the electronic musical instrument becomes a work state. Therefore, it is not required that a player re-sets the parameter before stating the performance and data extended in RAM 3 is writing-processed in the non-volatile memory before the power source is turned off. Then, the electronic musical instrument becomes the one easy to treat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for storing data such as performance data and pattern data developed in a RAM area of an electronic musical instrument when a power switch of the electronic musical instrument is turned off.
The present invention relates to a memory device of an electronic musical instrument that can be automatically backed up to a memory device capable of holding data without power supply.

[0002]

2. Description of the Related Art In a conventional electronic musical instrument having no backup function of performance data, it is necessary for a player to manually set performance data, pattern data, and the like before starting a performance, which is troublesome to handle. Was.

In a conventional electronic musical instrument with a memory device, when a power switch is turned off, a player performs a procedure for storing performance data and the like in a backup memory by hand beforehand, and turns on the power switch. In some cases,
It was necessary to read the data from the backup memory by hand and develop the data in a predetermined area before starting the performance.

A memory used in such a conventional electronic musical instrument with a memory device is, for example, an S-RAM or the like, and a backup is required to hold data stored when a power switch is turned off. A power supply was required, and a primary battery or a secondary battery was provided as a backup power supply.

For this reason, when the power switch is turned off, a process for storing necessary data in the backup memory is performed in advance, and when the power is turned on, the data in the backup memory is expanded in a predetermined area of the RAM. For example, the performer needed to take various measures.

Therefore, there is a problem that handling is troublesome, and a backup power supply is required to hold the backed up data, so that the apparatus becomes expensive.

Further, if the battery is left for a long period of time, the sub-battery for backup is also discharged, and all data and the like stored in the backup memory may be lost. Therefore, when designing an electronic musical instrument, it is necessary to consider the size of the backup power supply, the ease of replacement, and the like, and there are many structural restrictions, making it difficult to design.

In addition, the conventional electronic musical instrument which does not have a function of automatically backing up when the power switch is turned off, even if it has the angle backup function, turns off the power carelessly. There was also a problem that the set performance data and pattern data were lost.

Therefore, when the performance is started again, it is necessary to set performance data, pattern data, and the like necessary for the performance anew one by one, and handling is troublesome.

However, in a conventional electronic musical instrument, a writable nonvolatile memory (for example, a flash ROM) is used.
OM) and a method of supplementing data from the memory has not been proposed.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and when a power switch is pressed to turn off the power switch, a non-volatile memory which does not require a battery backup is required. Data is automatically backed up.

When the power switch is turned on, after the main power is connected, the data stored in the non-volatile backup memory is transferred to the R after the initialization process.
An object of the present invention is to provide a memory device of an electronic musical instrument having a function of being automatically read and developed in a predetermined area of an AM.

[0013]

According to the present invention, a first storage means 3 comprising a random access memory for storing performance data, pattern data, and the like during a performance, and when the power switch 11 is turned off. Required data such as performance data and pattern data developed in the first storage means 3 is transcribed and stored in the second storage means 4
Detecting means 21 for detecting on / off of the power switch 11, and detecting the data stored in the first storage means 3 to the second memory when the detecting means 21 detects that the power switch 11 is turned off. After being stored in the storage unit 4, the power supply control unit 100 is controlled to turn off the circuit of the main power supply, and when the power switch 11 is detected to be on, the power supply control unit 100 is controlled to turn on the circuit of the main power supply, and Control means 22 for expanding the data stored in the second storage means 4 in a predetermined area of the first storage means 3 and storing the data in the second storage means 4 subsequent to the setting; The storage means 4 is configured to be able to hold the stored contents without power supply.

The second storage means 4 is a flash ROM which can be erased electrically.

The second storage means 4 is a hard disk drive.

The second storage means 4 is a floppy disk drive.

The second storage means 4 is a magneto-optical disk drive.

As described above, the memory device of the electronic musical instrument according to the present invention is a flash ROM, a hard disk device, or a floppy disk device which is a writable read-only memory and whose storage contents can be electrically erased. An external storage device such as a magneto-optical disk device is used.

EEPRO also called flash ROM
The M or E ² ROM has an inherently programmable R
When the memory contents need to be erased or rewritten, the memory can be easily erased or rewritten by an electrical operation without using a specific device while the memory is attached to the main body of the electronic musical instrument. A possible memory device.

In addition, the flash ROM does not require a power supply for storing data. For this reason, in the present invention, this flash ROM is used as the second storage means 4, and is used as a backup memory of the storage contents of the first storage means 3 when the power switch 11 is turned off.

As a result, it is possible to store and retain programs and data regardless of power loss.

For this reason, in the present invention, when the power switch 11 is turned off, the detecting means 21 detects this and sends a signal notifying the detection result to the control means 22. The control means 22 receives this signal, reads out the performance data and pattern data stored in the first storage means 3, writes them in the second storage means 4 and backs them up, and then turns off the main power supply.

On the other hand, when the power switch 11 is turned on,
The detecting means 21 detects that the power switch 11 is turned on, and notifies the control means 22 of the detection result. Control means 2
Receiving this signal, subsequent to the initial setting, the performance data and pattern data stored in the second storage means 4 are developed and written in a predetermined area of the first storage means 3, and the performance preparation is completed. .

Thus, when the power is turned off, predetermined data such as performance data and pattern data are always stored in the flash ROM.
When the power switch 11 is turned on, the data stored in the OM 4 is automatically reset to a predetermined area of the RAM 3 when the power switch 11 is turned on.

Therefore, there is no fear that the performance data will be erased by inadvertently turning off the power switch 11.
Since necessary data is automatically reset when the power switch 11 is turned on, the data is backed up when the power is turned off unlike a conventional electronic musical instrument, and there is no need to set performance data or the like at the start of a performance. It becomes an easy-to-handle electronic musical instrument.

Moreover, since a non-volatile memory such as a flash ROM is used as the storage device, a backup power supply is not required for the memory device, and it is not necessary to consider the size and the mounting position of the battery at the time of design, which facilitates the design. The cost is also low.

When a hard disk drive or a floppy disk drive is used as the second storage means 4, the reaction is slow but the performance data can be stored without power supply, and the media can be stored according to the music to be played. Since various performance data can be set by a simple operation for exchange, the electronic musical instrument is flexible and easy to use.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram for explaining the overall configuration of an electronic musical instrument having a backup function according to the present invention. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The CPU 1 controls each section of the electronic musical instrument in accordance with a control program stored in a program memory section of the ROM 2, reads desired control parameters from a tone data storage section provided on the ROM 2, and sends the control parameters to the tone generator section 8. .

The CPU 1 reads an event buffer storing the result of the panel scan, detects ON / OFF of the power switch 11 and sends it to the control unit 22; Second based on the result
Control unit 2 for writing to and reading from flash ROM as storage means 4
2 are provided.

The ROM 2 has a timbre data memory in addition to a program memory in which a program for operating the CPU 1 is stored. In this tone data memory section,
A frequency number, a waveform number, an envelope waveform number, mode data, and the like, which are data for forming a tone component signal, are stored. In addition, various fixed data are also stored in the ROM 2.

The RAM 3 defines a program for operating the CPU 1, a work area for the CPU 1, various registers, counters, flags, and the like for controlling the electronic musical instrument, and is stored in the ROM 2. It has a data area in which necessary data is transferred and temporarily stored, and stores tone color data and various other fixed data.

The data relating to the setting states of the switches of the operation panel 7 stored in the RAM 3 is referred to by the CPU 1 when sound is generated and as necessary. Further, a key press map for storing the on / off state of the keyboard 6 and a note-on counter are also provided in the RAM 3.

The flash ROM 4 is an erasable ROM that can be erased according to a program instruction and can be rewritten without using a dedicated erasing device, and is built in the electronic musical instrument main body. Therefore, in this embodiment, the flash ROM 4 is used as a non-volatile memory as the second storage means 4 for backing up performance data, pattern data, and the like.

The peripheral devices 5 are various devices used by being connected to the electronic musical instrument of the present invention.
External devices such as DI devices, floppy disk devices, and hard disk devices.

The keyboard 6 is used for designating a musical tone to be generated, and is composed of a plurality of keys and key switches which are opened and closed in conjunction with key press / release operations of these keys. Key press / key release operations of the player are detected by a touch detection circuit (not shown), and a signal detected under the control of the CPU 1 is supplied to the sound source unit 8.

The keyboard 6 includes a key scan circuit for detecting the pressed state of each key, and the performance information generated by depressing or releasing the keys on the keyboard 6 is temporarily stored in the RA.
It is stored in a predetermined area of M3 and read by the CPU 1 as required.

In addition to the power switch 11, the operation panel 7 is provided with various switches and indicators for controlling the electronic musical instrument, such as a tone selection switch, a mode designation switch, a melody selection switch, and a rhythm selection switch.

The set / reset state of each switch of the operation panel 7 is detected by a panel scan circuit (not shown). Data on the switch set state detected by the panel scan circuit of the operation panel 7 is It is stored in the RAM 3 under the control of the control unit 22.

The tone generator 8 reads out the tone waveform data and envelope data corresponding to the signal output from the CPU 1 from a waveform memory (not shown), adds an envelope to the read tone waveform data, and outputs it as a tone signal. .

The D / A converter 9 converts a digital signal sent from the tone generator 8 into an analog signal. The signal converted into an analog signal by the D / A converter 9 is converted by an amplifier (not shown). The signal is amplified to a predetermined gain and supplied to the speaker 10.

The speaker 10 converts an analog tone signal as an electric signal sent from the amplifier into an acoustic signal. That is, a tone is emitted according to the generated tone signal.

The power switch 11 is a switch for instructing on / off of the power of the electronic musical instrument, and is constituted by, for example, a seesaw switch. The relay 12 is a switch for turning on / off a main power supply current connected to the musical instrument main body in accordance with on / off of the power switch 11.

The power control unit 100 controls the switching operation of the power switch 11, that is, the relay 1 according to the on / off state.
2 is a circuit for generating a signal for turning on / off 2 and includes a logic circuit 13 and a transistor 14.

The transistor 14 is a device that performs a switching operation using an interface phenomenon of a semiconductor, generates “H” and “L” signals according to ON / OFF of the power switch 11, and controls the relay 12. Things.

FIG. 2 shows a relay for supplying the main power supply current and the signals input to the input terminals A and B of the logic circuit 13 of the power supply control unit 100 when the power switch 11 is operated in such a configuration. FIG. 12 is a diagram for explaining the on / off relationship of the reference numeral 12.

In the figure, "X" indicates that the input signal may be either "L" or "H", and HiZ indicates that the main power supply current is off with high impedance. ing.

When the power switch 11 is turned on, the signal input to the A terminal of the logic circuit 13 changes from “H” to “H”.
L. On the other hand, when the signal input to the A terminal of the logic circuit 13 is “L”,
The signal input to the terminal is C in both cases of "L" and "H".
The signal output from the terminal is "L".

Therefore, the signal "L" output from the C terminal
Is inverted to “H” by the transistor 14 and the relay 1
2 is input to the D terminal. As a result, the main power supply circuit of the relay 12 is turned on, and the main current is supplied to the instrument main body.

On the other hand, when the power switch 11 is turned off,
After a signal “H” indicating that the switch has been turned off is sent to the CPU 1 to perform a predetermined process (described later), the signal “H” is sent from the CPU 1 to the input terminal B of the logic circuit 13 through an output port.

As a result, the signal “H” is input to both the input terminals A and B of the logic circuit 13, so that the signal “H” is output from the output terminal C of the logic circuit 13, and this signal is The signal is inverted to “L” at 14 and input to the D terminal of the relay 12.

As a result, the relay 12 is turned off, so that the main power supply circuit is also turned off, and the supply of the main current to the musical instrument main body is turned off.

Next, the operation of the embodiment of the present invention based on the above description will be described.

In FIG. 1, Vcc is a power supply voltage supplied from an outlet or the like and converted into DC, and GND indicates a ground level. In this description, it is assumed that the outlet is already connected, and Vcc and GND are connected to the power supply control unit 100, so that the power supply control unit 100 is always supplied with power supply current.

The power switch 11 is, for example, a seesaw switch. When the power switch 11 is turned on, the on state is maintained until the power switch 11 is turned off. When the power switch 11 is turned off, the power switch 11 is turned off until the next time the power switch 11 is turned on. Shall be maintained.

Further, it is assumed that the interrupt port of the CPU 1 is a rising edge interrupt port that performs an interrupt at the moment when the signal switches from "L" to "H". The relay 12 is turned on when an input signal is “H”, and is turned off when the signal is “L”.

In this configuration, when the power switch 11 is turned on, the signal input to the terminal A of the logic circuit 13 becomes "L" and the signal output from the logic circuit 13 becomes "L". The output signal of the buffer transistor 14 becomes “H”, the relay 12 is turned on, and the power current is supplied to the electronic musical instrument main body 200.

When the power of the electronic musical instrument main body 200 is turned on, the control section 22 of the CPU 1 reads the data backed up in the flash ROM 4 into a predetermined area of the RAM 3 and develops the data following the initialization processing. Subsequently, the signal output from the output port, that is, the logic circuit 1
The signal input to the B terminal 3 is set to “L”.

As a result, the signal input to the A terminal of the logic circuit 13 is “L”, and the signal input to the A terminal is “L”.
Therefore, the output signal of the logic circuit 13 is “L”.
, And the electronic musical instrument enters a normal operation state.

On the other hand, when the power switch 11 is turned off, the signal input to the A terminal of the logic circuit 13 shifts from "L" level to "H" level. Then, the "H" level signal is sent to the CPU 1 through the interrupt port. When the detection unit 21 of the CPU 1 detects this “H” level signal, it notifies the control unit 22 of the detection.

Thus, the control section 22 shifts to a backup processing routine. That is, data developed in a predetermined area of the RAM 3 is written to the flash ROM 4.

When the writing is completed, the control unit 22 outputs the signal “H” to the terminal B of the logic circuit 13 through the output port.
Send to The output of the terminal C of the logic circuit 13 is switched from “L” to “H” by this signal, so that the output signal is switched to “L” by the inversion buffer transistor 14, the relay 12 is turned off, and the Power is turned off.

As described above, according to the present invention, when the power switch 11 is turned off, the RAM is turned off before the main power is turned off.
The data developed in the predetermined area of flash memory 3 is flash R
After being backed up by OM4, the main power is turned off.

When the power switch 11 is turned on,
After the main power is turned on, initialization is performed, and after the data stored in the flash ROM 4 is expanded in a predetermined area of the RAM 3, the electronic musical instrument is put into operation.

Therefore, before the performance is started, the player sets the parameters again, and before turning off the power, the RAM 3
It is not necessary to perform the process of writing the data expanded in the non-volatile memory, and the electronic musical instrument is easy to use.

FIG. 3 is a timing chart for explaining the backup of performance data and parameters of the electronic musical instrument of the present embodiment and the timing of developing the backup data in a predetermined area of the RAM 3.

As shown, when the power switch 11 is turned on, a signal "H" indicating that the power switch 11 is turned on is input to the D terminal of the relay 12, and the main power is turned on. When the main power supply is turned on, the control unit 22 of the CPU 1
Make the initial settings for.

Subsequently, the data backed up in the flash memory is read into a predetermined area of the RAM 12, and the signal input to the B terminal of the logic circuit 13 is changed to "
The electronic musical instrument main body 200 enters a normal playable state and waits.

Next, when the power switch 11 is turned off, the signal input to the terminal B of the logic circuit 13 becomes "
From the L level to the “H” level, the “H” level signal is sent from the interrupt port of the CPU 1 to the electronic musical instrument main body 20.
0, whereby the control of the control unit 22 shifts to the backup processing routine, and the backup processing is performed.

When the backup processing is completed, the control unit 2
2 is connected to the B terminal of the logic circuit 13 through the output port.
The signal of the H level is sent, whereby the output of the C terminal is switched from “L” to “H”, inverted by the transistor 14, the “L” signal is input to the D terminal of the relay 12, and the relay 12 is turned off. Then, the main power supply is turned off.

As described above, in the electronic musical instrument of the present invention, when the power switch 11 is turned off, required data is backed up, and when the power switch 11 is turned on, the backup data is developed in a predetermined area and can be played. State.

In the above, the embodiment of the present invention has been described by taking as an example the case where a flash ROM is used as a nonvolatile memory.
The present invention is not limited to this, and it goes without saying that various modifications can be made without departing from the gist of the present invention, for example, when the data is stored in an external storage device such as a floppy disk device or a hard disk device. .

The field of application of the present invention is not limited to electronic musical instruments. For example, the present invention can be applied to various fields such as a storage device for interrupting a game in a game machine or a resume function of a word processor. Applicable.

[0074]

According to the present invention, when the power switch is turned off, the backup of parameters and the like is automatically performed in the nonvolatile memory, and when the power switch is turned on, a predetermined area of the RAM is automatically transferred from the nonvolatile memory. Since the parameters are written into the electronic musical instrument, there is no need to reset the parameters and the like before the performance starts, and an electronic musical instrument that is simple and easy to handle can be provided.

Since the data is automatically backed up when the power switch is turned off, there is no need to worry about erasing data by mistake, and there is no need to pay attention to special operations and complicated processing, and to concentrate on playing. it can.

Further, since the present invention uses a non-volatile memory, it does not require a backup power supply and is an inexpensive and easily designed electronic musical instrument.

[Brief description of the drawings]

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

FIG. 2 is a diagram illustrating the relationship between the operation of a power control unit and the operation of a relay according to the present invention.

FIG. 3 is a timing chart illustrating the relationship between the operation of a power switch, the operation of each terminal, and the backup processing restoration processing according to the present invention.

[Explanation of symbols]

Reference Signs List 1 CPU 2 ROM 3 RAM (first storage unit) 4 Flash ROM (non-volatile memory) (second storage unit) 5 Peripheral device 6 Keyboard 7 Operation panel 8 Sound source unit 9 D / A converter 10 Speaker 11 Power switch DESCRIPTION OF SYMBOLS 12 Relay 13 Logic circuit 14 Transistor 21 Detection part (detection means) 22 Control part (control means) 100 Power supply control part 200 Electronic musical instrument main body

Claims (5)

[Claims] 1. A first storage means comprising a random access memory for developing and storing performance data, pattern data, and the like during a performance, and the first storage means when a power switch is turned off. Required data, such as performance data and pattern data, which are transcribed in the memory, are transcribed and retain the memory, detection means for detecting on / off of a power switch; When off is detected, the first
After the data stored in the storage means is stored in the second storage means, the power supply control section is controlled to turn off the circuit of the main power supply. The circuit of the main power supply is turned on, and following the initial setting, the data stored in the second storage means is stored in the first storage unit.
Control means for developing and storing the data in a predetermined area of the storage means, wherein the second storage means can hold the stored content without power supply. 2. The memory device for an electronic musical instrument according to claim 1, wherein said second storage means is an electrically erasable flash ROM. 3. The memory device for an electronic musical instrument according to claim 1, wherein said second storage means is a hard disk device. 4. The memory device for an electronic musical instrument according to claim 1, wherein said second storage means is a floppy disk device. 5. The memory device for an electronic musical instrument according to claim 1, wherein said second storage means is a magneto-optical disk device.