JP2939073B2 - Data transfer control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transfer control device used for an effector controller of an electronic musical instrument, for changing a display when a frequent switch event occurs in a short time, and for transferring data thereafter.

[0002]

2. Description of the Related Art Conventionally, an effector controller of an electronic musical instrument performs digital processing. The effector controller for performing the digital processing includes a CPU, a ROM for storing a program, a working RAM, and an LCD.
And a plurality of switches for selecting a program mode.

Further, a digital signal processor (DSP) for processing and outputting digital signals input from an electronic guitar, a keyboard, a microphone and the like is provided. These are connected by a bus line system.

FIG. 5 is a flowchart showing a processing procedure in this conventional configuration. In FIG. 5, first, a switch-on scanning process is performed under the control of the CPU (step (hereinafter referred to as S in the figure) S10). Then, an event, that is, a patch selection is detected, and then detection of the event is determined by control of the CPU (steps S11 and S12).

If the event is detected in step S12, Yes, the display shows a program mode name for selecting and changing a patch, and then reads out the program mode from the ROM and transfers the program mode to the DSP via the bus line. Is performed under the control of the CPU, and if No in which an event is not detected, the process returns to step S10 and is repeated (steps S13 and S14).

As described above, in the conventional effector controller, the switch on (O) for changing a desired patch is performed.
The program mode selected in N) is transferred to the DSP, and the program name and the like are displayed on the display at the same time.

[0007]

In the conventional data transfer control device, patch selection and change may be frequently performed. For example, when the operator makes a mistake in selecting a desired program or confirms a desired music effect, the operator may continuously turn on a plurality of switches.

Each time the switches are turned on, the RO
The CPU reads out the program stored in M and transfers it to the DSP through the bus line, and simultaneously performs control for displaying the program name or the like, which is the content of patch selection and change, on the display.

In this case, since the program read from the ROM by the CPU and transferred to the DSP through the bus line is, for example, 4K bits (bits) of serial data, it takes time to process the data transfer.

For this reason, the CPU cannot process the next switch-on interrupt, and the display is not changed even if the switch is turned on. Therefore, the operator repeats the switch-on operation again and continuously in order to select and change the patch, and there is a disadvantage that the operability in the switch selection deteriorates.

As a remedy, it is conceivable to provide a switch for selecting and displaying a desired program and a data transfer switch after the display so as to separately instruct display and transfer. In this case, there is a disadvantage that the number of switch operations increases.

The present invention solves such a conventional problem. An operator does not need to repeat the switch-on operation again and continuously in a short time in a short time in order to select and change a patch. It is an object of the present invention to provide a data transfer control device capable of improving the operability in the above.

[0013]

In order to achieve the above object, a data transfer control device according to the present invention comprises a storage means for storing a plurality of programs, and a desired program stored in the storage means based on a switch-on operation. Selecting means for selecting, display means for displaying a program mode name selected and read by the selecting means, counting means for counting the elapse of a predetermined time, and program mode data selected and read by the selecting means. When a plurality of switch-ons are successively generated in the digital signal processor which is transferred and performs predetermined processing, the program mode name corresponding to the continuous switch-on operation is displayed on the display means each time. And a predetermined time is counted by the counting means. When there is no new switch-on operation, characterized by having a data transfer control means for transferring data of a program mode that is the selected and displayed on the digital signal processor.

[0014]

[0015]

According to the data transfer control device of the present invention having the above-described configuration, when a stored program is selected, at least the program mode name for which the selection is specified is displayed, and then the program which is read by specifying the selection is displayed. Mode data is being transferred.

When the stored program is frequently selected in a short time and a plurality of switches are turned on, a program mode name for which the selection is designated is displayed, and after this display, a switch-off is detected. If there is no switch-on within a certain time after this detection, data transfer is performed.

This eliminates the need for the operator to repeat the switch-on operation again and continuously in a short period of time for the purpose of selecting and changing the patch, thereby improving the operability in selecting the switch.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a data transfer control device according to the present invention will be described below in detail with reference to the drawings. FIG. 1A is a plan view illustrating an external configuration of a front surface of an effector controller to which the data transfer control device is applied. FIG. 1B is a plan view showing the external configuration of the back surface.

In FIG. 1A, this example shows a power switch 10, volumes 12a, 12b, 12c and 12d for adjusting the levels of a plurality of input sources, and program mode names for patch selection and change. Show 16
An LCD display 14 having two strings of characters and a 7-segment LED 16 for displaying a selected channel and the like are arranged.

Further, in this example, there are provided desired program modes, that is, on / off (ON / OFF) switches 18a, 18b, 18c, for selecting and changing patches.
18d, an input terminal to which an input signal from an electronic guitar, a keyboard, a microphone, or the like is supplied, and an output terminal for outputting a signal processed here, that is, on / off switches 20a and 20b for selecting a channel. ,
20c and 20d are arranged.

In FIG. 1B, this example shows input terminals 22a, 22b, 22c, 22d and output terminals 24a,
24b, 24c, and 24d are arranged.

FIG. 2 is a block diagram showing an electrical configuration of the data transfer control device.

In FIG. 2, this example shows a CPU 30 for controlling the entire apparatus, and a ROM for storing a program.
32, and a working RAM 33 are provided.

Further, a display 34 such as an LCD (corresponding to the LCD display 14 and the 7-segment LED 16 in FIG. 1) and a switch 36 (the on / off switch 1 in FIG. 1)
8a to 18d and on / off switches 20a to 20d).

D for processing and outputting input digital signals from an electronic guitar, keyboard, microphone, etc.
An SP 38 and a bus line 40 are provided.

An A / D converter 42 connected to the DSP 38 for exchanging signals with an external device;
/ A converter 44.

Next, the operation of the configuration of this embodiment will be described.

FIG. 3 is a flowchart showing a processing procedure in this operation. In FIG. 3, the operator selects on / off switches 20a to 20d (switch 36 in FIG. 2) in FIG. 1 to perform connection with an electronic guitar, keyboard, microphone, and the like.

Next, the operator selects an on / off switch (18) corresponding to a desired program mode among the on / off switches 18a to 18d (switch 36 in FIG. 2) in FIG.
a to 18d) are turned on. That is, selection and change of a patch are performed.

This on / off switch (18a-18)
The CPU 30 recognizes the ON in d) and calls the selected program mode from the ROM 32. Thereafter, the processing procedure shown in FIG. 3 is executed.

During the routine, the data transfer flag is checked (step S40). Thereafter, it is determined whether or not there is a data transfer flag for the program mode selected by the operator with the on / off switches 18a to 18d (step S41). If the data transfer flag is on (ON) in step S41, the data transfer flag is cleared and data transfer processing is performed (steps S42 and S4).
3).

In this data transfer processing, the CPU 30
The program mode read from the OM 32 is transferred to the DSP 38 via the bus line 40. The data signal in the program mode processed by the DSP 38 is converted into an analog signal by the D / A converter 44, and the output terminal (2
4a, 24b, 24c, 24d) to the connected electronic guitar, keyboard or the like.

If the data transfer flag is off (OFF) in step S41, the on / off switches 18a to 18
On / off of d is scanned (step S44).

The on / off switches 18a to 18
A detection process of an event in which any of the d is turned on / off is performed (step S45). Subsequently, it is determined whether or not an event has been turned on / off (step S46).

In step S46, there is no event No
In the case of, the process returns to step S40 and the subsequent processes are repeated. That is, the operator operates the on / off switches 18a to 18a-1.
8d is turned on / off, and waits for the selection process of the program mode.

If the event is Yes in step S46, it is determined whether the event is on or off (ON / OFF) (step S47).

If it is off at step S47, the counter flag is set and the process returns to step S40 to repeat the subsequent processing (step S48).

If it is on (ON) in step S47,
The counter is reset and the counter is cleared (steps S49 and S50).

Next, the operator operates the on / off switch 18a.
The program mode name and the like selected by turning on .about.18d are displayed on the display 34 (the LCD display 14 in FIG. 1). Next, interrupt processing in data transfer will be described.

FIG. 4 is a flowchart showing the processing procedure of this interrupt processing. In FIG. 4, a counter flag check is performed, and it is determined whether the flag exists (steps S61 and S62).

Subsequently, at step S62, a flag Y is set.
If es, the counter is incremented, and if No, the counter value is checked (steps S63, S64).

After checking the counter value,
It is determined whether or not the counter value is a set value. If the set value is Yes, the data transfer flag is set, and the process returns with No if the set value is not set (step S6).
5, S66).

[0043]

As is apparent from the above description, the data transfer control device of the present invention, when selecting a stored program, displays at least the program mode name designating the selection, and then performs the selection. The specified and read program mode data is transferred.

When the stored program is frequently selected in a short time and a plurality of switches are turned on, a program mode name for which the selection is designated is displayed. After this display, a switch-off is detected. Since the data transfer is performed when there is no switch-on within a certain period of time after the detection, the operator does not repeat the switch-on operation again and continuously in a short time in a short time in order to select and change the patch. There is an effect that operability in switch selection is improved.

[Brief description of the drawings]

FIG. 1A is a plan view showing an external configuration of a front surface of an effector controller to which a data transfer control device is applied. (B) is a top view showing the appearance composition of the back.

FIG. 2 is a block diagram illustrating an electrical configuration of a data transfer control device according to the present invention.

FIG. 3 is a flowchart illustrating a processing procedure in the overall operation of the embodiment.

FIG. 4 is a flowchart illustrating a procedure of an interrupt process in the operation of the embodiment;

FIG. 5 is a flowchart showing a processing procedure in the entire operation of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Power switch 12a-12d Volume 14 LCD display 16 7-segment LED 18a-18d, 20a-20d On / off switch 22a-22d Input terminal 24a-24d Output terminal 30 CPU (control means) 32 ROM (storage means) 33 RAM 34 display (display means) 36 switch (selection means) 38 DSP (digital signal processor) 40 bus line 42 A / D converter 44 D / A converter

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-269495 (JP, A) JP-A-4-331920 (JP, A) JP-A-3-266894 (JP, A) JP-A-63-1988 300291 (JP, A) JP-A-63-23672 (JP, A) JP-A-2-244212 (JP, A) JP-A-4-91974 (JP, A) JP-A-4-344917 (JP, A) JP-A-4-348380 (JP, A) JP-A-2-44792 (JP, U) JP-A-63-45593 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06F 9/06 G06F 3/14 G10K 15/00-15/04 G10K 1/00-1/46

Claims (1)

(57) [Claims] 1. A storage unit for storing a plurality of programs, a selection unit for selecting a desired program from the storage unit based on a switch-on operation, and a program mode name selected and read by the selection unit is displayed. Display means; counting means for counting the passage of a predetermined time; digital signal processor for performing predetermined processing by transferring program mode data selected and read by the selection means; and switching on a plurality of switches in the selection means Are continuously displayed on the display means each time the continuous switch-on operation is performed, and a predetermined time is counted by the counting means. If no switch-on operation has been performed, the selected and displayed The data transfer control apparatus characterized by comprising: a data transfer control means for transferring data in program mode to the digital signal processor.