JPH08293771A - Pattern changing method for digital waveform - Google Patents

Abstract

PURPOSE: To exactly and speedily change the digital waveform displayed on a display with a simple operation by outputting a waveform changing instruction signal by moving a cursor inside the display area of the waveform to be changed. CONSTITUTION: A CPU 10 is provided with a position detecting means for the cursor on a display 13, position discriminating means for this cursor and mode switching function or the like. When changing the waveform on the display 13, a mouse 15 is operated and that cursor is positioned inside the display area of the digital waveform to be changed. Next, the waveform changing instruction signal is outputted by clicking the button on this mouse 15 and a display change mode is provided. Afterwards, when moving the cursor upward, the waveform at that part is changed to High but when the cursor is moved downward, the waveform at that part is changed to Low. Therefore, the change of waveform can be easily and speedily operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for changing a pattern of a digital waveform, and more specifically, it can change the pattern of a digital waveform generated from a waveform generator or the like on a display. The present invention relates to a pattern changing method.

[0002]

2. Description of the Related Art When a digital waveform (pulse waveform) is generated by a waveform generator, the digital waveform is high.
Since it is a binary signal of h and Low, an arbitrary waveform pattern can be obtained by designating its duty ratio, for example.

However, when changing the pattern of the digital waveform already displayed on the display,
It is more convenient if you can change the waveform pattern directly on the display, rather than operating the numeric keypad on the keyboard to reset its duty ratio.
Moreover, a waveform suitable for an image can be easily obtained. In particular,
If you want to obtain an irregular digital waveform, that feeling is strong.

Therefore, conventionally, the waveform pattern can be directly changed on the display, and an example thereof will be described with reference to FIGS. 5 and 6. FIG. 5 shows a state in which each waveform data of a plurality of waveform generation channels ch1 to ch5 is displayed on the display 1 along the time axis X direction. When making a change, first, for example, by operating the four cursor movement keys 5a to 5d of the operation unit 2 shown in FIG. 6, it is desired to change the cursor C indicated by the cross mark of the channel ch1. Move to the part.

Then, a button (not shown) is operated to enter the display change mode, and then the upward cursor movement key 5a is pressed to move the cursor C upward, whereby the waveform of that portion is changed to High. At the same time, the cursor C is operated by operating one of the left and right cursor movement keys 5c and 5d or the jog dial 6.
Is moved along the direction of the time axis X, the waveform of the portion corresponding to the movement amount is raised to High. On the other hand, when it is desired to change the High portion of the waveform to the Low waveform, it is sufficient to position the cursor C at the High portion and then move the cursor C downward.

[0006]

As described above, it is possible to change the waveform of a desired portion by moving the cursor C, but this has the following drawbacks. That is, since the cursor C has to be positioned on the line of the portion to be changed, the alignment is required to be accurate.

Further, the cursor C is moved to the digital waveform Hi.
Since it has to be moved within a limited display area between gh and Low, its operability is poor. In particular, as shown in FIG. 5, when a plurality of digital waveforms are displayed, the display area of each waveform is narrowed accordingly, which further deteriorates the operability. In addition, if the cursor C jumps into the display area of the adjacent waveform by mistake in the operation, the adjacent waveform will be changed.

Further, after the cursor C is moved to a predetermined position to be changed, the display change mode is set. Conventionally, the mode is displayed by, for example, an LED provided outside the editing area. Therefore, there is a problem that it is difficult to understand.

The present invention has been made in view of such a conventional situation, and an object thereof is to enable a digital waveform displayed on a display to be changed accurately and quickly by a simple operation. Another object of the present invention is to provide a method for changing the pattern of the digital waveform.

[0010]

In order to achieve the above object, the present invention provides a digital display on a display along its time axis (X-axis), as described in claim 1. In a digital waveform pattern changing method of changing a predetermined portion of a waveform into a High waveform or a Low waveform by using a mouse as an operating means, a cursor displayed on the display and moving according to an operating direction and an operation amount of the mouse. Cursor position determining means for determining whether or not is located in the high-low display area of the digital waveform, change instruction means for outputting a waveform change instruction signal, and the waveform change instruction from the change instruction means. A memory for storing the X-axis position of the cursor and the Y-axis position orthogonal to the X-axis in the display area when a signal is output. And the cursor is located in the display area, and the waveform change instruction signal is output from the change instruction means, the Y-axis position of the cursor at the time of outputting the waveform change instruction signal is set. As a reference, when the cursor moves upward, the part is changed to a high waveform, and when the cursor moves downward, the part is changed to a low waveform.

In claim 2, the above-mentioned changed Hi
The width of the gh waveform or the low waveform depends on the amount of movement of the cursor in the X-axis direction.

Further, in a third aspect of the present invention, when a plurality of digital waveforms are arranged on the display along the time axis (X axis) direction, the cursor is High-Low of a predetermined digital waveform. Even if the cursor moves outside the predetermined digital waveform display area after the waveform change instruction signal is output from the change instruction means when the cursor is located in the display area between
It is characterized in that only the digital waveform is subject to pattern change.

Further, in claim 4, the display of the cursor itself is changed in response to the output of the waveform change instruction signal from the change instructing means. As described in
The waveform change instruction signal is output from the change instructing means, and the cursor is High for the digital waveform.
It is preferable that the display of the cursor itself is changed when the cursor is located in the display area between h-Low.

[0014]

In the above structure, in order to change the waveform on the display, the mouse is first operated to position the cursor within the display area of the digital waveform to be changed. Then, for example, if a button provided on the mouse is pressed to output a waveform change instruction signal to enter the display change mode and then the cursor is moved upward, the waveform of that portion is changed to High and the cursor is moved downward. If it is moved to, the waveform of that part is changed to Low.

Once the display change mode is set, the digital waveform is fixed as the change target.
Even if the cursor is largely moved to be positioned within the adjacent digital waveform, the adjacent digital waveform is not changed as in the conventional case.

Further, when the display change mode is set, the display of the cursor itself is changed from, for example, a triangular shape to an arrow shape, so that the display change mode can be clearly known. Even in the display change mode, if the display is changed only when the cursor is in the waveform display area, it is possible to accurately recognize that the cursor is in the waveform display area. be able to.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. FIG. 1 is a schematic block diagram of a waveform generator used for carrying out the present invention. According to this, the waveform generator includes a central processing unit (CPU) 10 as a control means, Waveform data memory (RAM) 11 storing various waveform data, and CPU 1
ROM 12 storing a control program of 0, and C
The display 13 includes a display 13 for displaying the waveform read from the RAM 11 via the PU 10, a printer 14 for printing out the waveform, and an operation unit 15 for reading and changing the waveform.

In this case, the CPU 10 is shown as one chip, but the CPU 10 is provided with a cursor position detecting means on the display 13, a cursor position determining means, a mode switching function and the like. Although not shown, the operation unit 15 is provided with a mouse in addition to various function keys and ten keys. In this embodiment, the mouse is a display for giving a waveform pattern display change instruction signal to the CPU 10. A change button is provided.

FIG. 2 shows a display example of digital waveforms generated from, for example, three waveform generation channels ch1 to ch3 on the display 13. In this case, the High-Low area of each waveform is a display area (area in which the cursor C responds when the display change button of the mouse is pressed) P, and the area between each display area P and other areas are waveform areas. The non-display area Q, that is, the area where the cursor C does not respond even if the display change button of the mouse is pressed.

Next, an example of changing the pattern of the digital waveform on the display 13 will be described with reference to the explanatory view of FIG. 3 and the flowchart of FIG.

First, in the first step ST1, the CPU 10 determines whether or not the display change button of the mouse is pressed. If the button is pressed, the cursor C is moved to the waveform display area in the next step ST2. It is determined whether or not it is within the (change effective area) P.

Then, as shown in FIG. 3 (a), when the cursor C is in the display area P, step ST3 is executed and the shape of the cursor C is shown in FIG. 3 (b). As described above, the triangular shape is changed to, for example, an arrow shape, and the channel target on which the changing operation is performed is determined (step ST4).

In steps ST5 and ST6, the height position (y coordinate position) of the cursor C at that time and the time axis position (x coordinate position) of the cursor C are, for example, CP.
It is stored in the temporary storage area in U10.

Next, in step ST7, it is determined whether or not the display change button of the mouse has been released. If the button is released, the shape of the cursor C is returned to the original triangular shape in step 7a, and then the process returns to step ST1.

If the display change button of the mouse is kept pressed, it is judged in step ST8 whether or not the cursor C has moved.
It is determined whether the position of the cursor C moved in 9 is higher than the y coordinate position.

If it is higher, step ST10 is executed. That is, as shown in FIGS. 3C and 3D, the waveform portion from the above-mentioned x coordinate position to the x coordinate position after the movement is set to High.

On the other hand, in step ST11, when the position of the moved cursor C is lower than the y-coordinate position, the waveform portion from the above-mentioned x-coordinate position to the x-coordinate position after the movement is set to High. To do.

Steps ST6 to ST10, S
Until T11, it is repeatedly executed until it is determined in step ST7 that the mouse display change button is released, and when it is determined in step ST7 that the display change button is released, it is shown in FIG. 3 (e). Thus, the cursor C is returned to its original shape and the waveform is fixed.

That is, according to the present invention, the y coordinate position at the time when the display change button of the mouse is pressed is used as a reference.
When the mouse moves above it, the pattern of the waveform goes High, and when it moves downward,
The waveform pattern is changed to Low, and FIG. 3 (f) shows an example of pattern change in the case where the cursor C is continuously moved in the X-axis direction while being raised and lowered alternately with reference to the y coordinate position. .

Further, according to the present invention, as in the above-described embodiment, the channel object for which the changing operation is performed is determined in step ST4.
Even if is moved to the display area of the adjacent channel, the pattern of the adjacent waveform is not changed.

The above flow chart shows an example of the operation, and the order of steps ST1 and ST2 may be exchanged, for example. Further, although the shape of the cursor C is changed from the triangular shape to the arrow shape in response to the pressing of the display change button of the mouse, the change mode may be arbitrary, for example, a pencil type is initially used and the display is changed. It may be changed to a pen type in the change mode, or only the color may be changed without changing its shape. In any case, since the display of the cursor on the display is changed, it is possible to directly know the display change mode.

On the other hand, when the waveform is changed on the display as described above, the data in the waveform data memory 11 is rewritten accordingly, and thereafter, the changed waveform data is output from the same waveform data memory 11. Will be.

[0033]

As described above, according to the present invention,
The following effects are obtained. That is, the mouse cursor displayed on the display is the digital waveform High.
Cursor position determining means for determining whether or not it is located in the display area between h-Low, change instructing means for outputting a waveform change instructing signal, and when a waveform change instructing signal is output from the change instructing means Storage means for storing the X-axis position of the cursor and the Y-axis position orthogonal to the X-axis in the display area, the cursor being in the display area, and the waveform from the change instruction means. After the change instruction signal is output, if the cursor moves upward with reference to the Y-axis position of the cursor at the time of outputting the waveform change instruction signal, the portion is set to a high waveform and the cursor moves downward. According to the invention of claim 1, when the portion is moved to the low waveform, the portion is changed to the low waveform. Re is moved by outputting the waveform change instruction signal to be anywhere) if, subsequent or High pattern of waveforms in accordance with the movement of the cursor L
Since it is arbitrarily changed to ow, the waveform changing operation can be performed easily and quickly.

In this case, according to the second aspect of the present invention, H is changed depending on the amount of movement of the cursor in the X-axis direction.
The width of the high waveform or the low waveform is freely selected.

According to the third aspect of the invention, even if the cursor enters the display area of the adjacent waveform, only the target digital waveform is subject to pattern change, so that the adjacent waveforms are adjacent to each other. You can operate the mouse without worrying about the existence of.

Further, according to the invention of claim 4, since the display of the cursor itself is changed in association with the output of the waveform change instruction signal, it is possible to clearly know that the display change mode has been entered. it can.

In this regard, according to the invention of claim 5, even in the display change mode, the display is changed only when the cursor is within the waveform display area.
In addition to the effect of the fourth aspect, it is possible to accurately recognize that the cursor is in the waveform display area.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing an example of a waveform generator to which a digital waveform pattern changing method of the present invention is applied.

FIG. 2 is a waveform diagram showing a display example of a digital waveform displayed on the display of the waveform generator.

FIG. 3 is an explanatory diagram for explaining a state in which the pattern of the digital waveform is changed.

FIG. 4 is a flowchart for explaining the operation of the present invention.

FIG. 5 is an explanatory diagram for explaining a conventional example when changing a waveform pattern on a display.

FIG. 6 is a schematic view showing an operation unit of the above conventional example.

[Explanation of symbols]

 10 CPU 11 Waveform Data Memory (RAM) 12 ROM 13 Display 15 Operation Unit C Cursor

Claims (5)

[Claims] 1. A time axis (X axis) on a display.
In a digital waveform pattern changing method for changing a predetermined portion of a digital waveform displayed along a direction to a High waveform or a Low waveform by using a mouse as an operating means, the operation direction of the mouse displayed on the display is changed. And a cursor position determining means for determining whether or not the cursor that moves according to the operation amount is positioned in the display area between High and Low of the digital waveform, and change instruction means for outputting a waveform change instruction signal. And a storage unit for storing the X-axis position of the cursor and the Y-axis position orthogonal to the X-axis in the display area when the waveform change instruction signal is output from the change instruction unit. After the waveform change instruction signal is output from the change instruction means located within the area, the waveform change instruction is output. Based on the Y-axis position of the cursor at the time of outputting the instruction signal, when the cursor moves upward, the relevant part is changed to the high waveform, and when the cursor moves downward, the relevant part is changed to the low waveform. A method for changing a pattern of a digital waveform, characterized by: 2. The digital waveform pattern changing method according to claim 1, wherein the width of the changed High waveform or the changed Low waveform depends on the amount of movement of the cursor in the X-axis direction. 3. The time axis (X
When a plurality of digital waveforms are arranged along the (axis) direction and the cursor is positioned in the display area between High and Low of a predetermined digital waveform, the change instruction means changes the waveform. 3. After the instruction signal is output, even if the cursor moves out of the display area of the predetermined digital waveform, only the digital waveform is subject to pattern change. Method for changing the pattern of the described digital waveform. 4. The pattern change of the digital waveform according to claim 1, wherein the display of the cursor itself is changed in accordance with the output of the waveform change instruction signal from the change instruction means. Method. 5. The display of the cursor itself is changed when the waveform change instruction signal is output from the change instructing means and the cursor is located in a display area between High and Low of the digital waveform. The method for changing the pattern of a digital waveform according to claim 1 or 2, wherein: