JP3053260B2 - How to display reference information on the display screen of a waveform measurement 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 method of displaying reference information on a display screen of a waveform measuring device.

[0002]

2. Description of the Related Art In a waveform measuring device such as a storage oscilloscope or a memory recorder, a measured waveform is a CRT.
Etc. are displayed on the display unit.

FIG. 5 is an explanatory view showing a conventional example of a waveform display pattern via a display means in the above-mentioned waveform measuring apparatus.

According to FIG. 1, a grid-like graduation line 5 is displayed on a waveform display surface 4 of a display screen 3 of a display means 2 of an apparatus main body 1, and a waveform 6 is displayed so as to overlap the graduation line 5. It has become so.

On the waveform display surface 4, the size per graduation of the graduation line 5 is set to, for example, "0.2 V / D".
In addition to a unit value display column 7 shown as "IV", an upper limit display column 8 showing the upper limit on the vertical axis as "2.0V" and a lower limit shown as "1.0V", for example. By providing a lower limit display column 9 and checking the upper limit display column 8 and the lower limit display column 9 on the display screen 3, the absolute voltage value of the displayed waveform 6 can be read, and the unit value By checking the display column 7, the relative voltage value of the waveform 6 can be read.

[0006]

By the way, in the case of the above-mentioned conventional method, an upper limit display column 8 and a lower limit display column 9 are additionally required on the display screen 3 in addition to the unit value display column 7. In particular, the upper limit display column 8 and the lower limit display column 9 divide the display screen 3 so as not to overlap the waveform 6 to be displayed, and separate the limit display space 10 from the waveform display surface 4. Had to be prepared.

However, regarding the display screen 3 formed on the screen of the CRT or the like, it is difficult to secure the limit value display space 10 due to the relationship with the layout and the difficulty in securing the space due to the increase in the number of input channels. There was an inconvenience that became difficult.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems encountered in the conventional method, and has a structural feature that includes an operation unit for performing a necessary input operation and an operation unit for performing the necessary input operation. An input unit for digitizing data to be measured fetched in response to an input operation from the operation unit and inputting the data to the apparatus main body; a memory unit capable of writing and reading necessary data; A display unit capable of displaying a waveform, and at least a CPU for centrally controlling these components, when displaying a waveform via a display screen partitioned by grid lines in the display unit, A unit value mode in which the display pattern currently displayed in the reference information display field on the display screen indicates the magnitude of the value per graduation every time an alternate input is made from a switch provided in advance. The upper limit of the voltage value on the vertical axis and the lower limit value to limit mode for displaying the value of each signed if is to appear in each switch the same position in the unit value mode if the limit value mode.

[0009]

For this reason, a unit value mode indicating the magnitude of a value per scale of the scale line, and a limit for displaying the upper limit value and the lower limit value of the voltage value on the vertical axis of the scale line as signed values, respectively. The value mode is alternately displayed in the reference information display field of the display screen at the same position each time the switch is input.

Therefore, the operator can read the required voltage value from the displayed waveform by checking only the display pattern in the reference information display section, and can set the upper limit value and the lower limit value in the limit value mode on the vertical axis. The display screen can be effectively used by eliminating the need for a space to be displayed above.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 2 is a block diagram showing an example of a schematic configuration of a waveform measuring apparatus provided for carrying out the present invention.

[0013] According to FIG. 1, the whole is determined by a necessary input operation, for example, function information on voltage (V) and current (A), range information for determining a value per division (DIV), and zero position. An operation unit 13 including a keyboard and the like used for reading necessary information at the time of measurement such as offset information, and data to be measured (analog data) captured via a terminal T in response to an input operation from the operation unit 13 Into an input unit (A / D) for converting the
A memory 16 comprising a RAM 16 capable of writing and reading necessary data, a screen RAM (VRAM) 17 capable of writing and reading image data, and an image stored in the VRAM 17. A controller 18 such as a CRT controller necessary for displaying data on the display means 19 side, and a display means 19 such as a CRT for visually displaying various data.
And a CPU 12 for integrally controlling these components.
Are provided at least.

As shown in FIGS. 3 and 4, the display means 19 is a CRT tube surface or an LCD, etc., on which a scale line 21 divided into a grid by meridians 22 and latitude lines 23 is displayed. It has a display screen 20 to be formed, and a waveform 24 is displayed on the display screen 20 so as to overlap the scale line 21.

Further, the display screen 20 has a scale line 2
1 is provided with a reference information display column 25 for displaying reference information including the upper limit value and the lower limit value of the value per scale in the scale 1 and the voltage value on the vertical axis in the scale line 21. The display pattern in the reference information display section 25 is alternately changed every time the input is made by pressing a switch 26 for switching the display pattern provided in the reference information display section 25.

FIG. 1 shows a processing procedure as an embodiment of the method of the present invention which is applied to the waveform measuring apparatus shown in FIG.

That is, after the input processing via the switch 26 for switching the display pattern is performed, first, the function information relating to the voltage (V), the current (A), etc. is read, and furthermore, one scale Range information on the magnitude of the value and offset information on the zero position are read.

After the necessary information is read in this manner, the display pattern currently displayed in the reference information display section 25 of the display screen 20 is changed to, for example, "0.2 V / DI" in FIG.
A unit value mode indicating the magnitude of a value per graduation on the graduation line 21 shown as “V”,
Alternatively, the upper and lower limits of the voltage value on the vertical axis of the graduation line 21 as shown in two steps of “2.0 V” indicating the upper limit value and “1.0 V” indicating the lower limit value in FIG. It is determined whether or not the mode is the limit value mode in which is displayed as a signed value.

At this time, the reference information display column 2 of the display screen 20
When it is determined that the unit value mode as shown in FIG. 3 is actually displayed in FIG. 5, the unit value mode is deleted, and then the limit value mode as shown in FIG. 4 is newly displayed.

On the other hand, a reference information display column 25 of the display screen 20
If it is determined that the limit value mode as shown in FIG. 4 is actually displayed, the limit value mode is deleted, and then the unit value mode is newly changed as shown in the reference information display column 25 of FIG. Is displayed.

FIGS. 3 and 4 show a case in which one switch 26 is shared for switching the display mode. This switch is used for the unit value mode and the limit value mode. The unit value mode is provided in the reference information display box 25 by inputting from one switch, and the reference value is displayed in the reference information display box 2 by inputting from the other switch.
The present invention can also be implemented by alternately displaying the limit value mode at 5.

In reading the necessary information such as the function information, the range information, and the offset information, the determination of whether the display pattern of the reference information display section 25 of the display screen 20 is the unit value mode or the limit value mode is completed. rear,
This can be performed as needed.

Since the present invention is configured as described above, the size of the value per graduation, which is the minimum unit of the graduation line 21 displayed in a grid pattern on the display screen 20 with the meridians 22 and the latitude lines 23, is shown. Unit value mode indicating scale and scale line 21
The limit value mode in which the upper limit value and the lower limit value of the voltage value on the vertical axis are respectively displayed as signed values means that the display screen 2 is located at the same position every time there is an input from the switch 26.
0 can be displayed alternately in the reference information display column 25.

For this reason, the operator operates the reference information display section 25.
By confirming only the display pattern of, the required voltage value can be read from the waveform 24 displayed on the display screen 20.

That is, the operator can see that the voltage value per scale, which is the minimum unit of the scale line 21, is 0.2 V by looking at the reference information display column 25 in FIG. The relative voltage of each of the 24 peak values can be read.

The operator sees the reference information display column 25 in FIG. 4 and finds that the upper limit value of the voltage value on the vertical axis of the scale line 21 is 2.0 V depending on the attached symbol, It is possible to know at the same time that the lower limit value is 1.0 V, and it is possible to read the absolute voltage value of the waveform 24.

Therefore, in the case of the conventional method shown in FIG. 5, the upper limit value and the lower limit value as the limit value mode need to be secured on the display screen 3 in order to display the upper limit value and the lower limit value on the vertical axis. Since the display screen 20 can be made unnecessary, the space of the display screen 20 which tends to be narrowed can be effectively used.

[0028]

As described above, according to the present invention, the unit value mode indicating the magnitude of the value per scale of the scale line and the upper limit value and the lower limit value of the voltage value on the vertical axis of the scale line are set. The limit value mode, which is displayed as a signed value, can be alternately displayed in the reference information display field of the display screen each time a switch is input, so the operator can check only the display pattern in the reference information display field. By doing so, the required voltage value can be read from the display waveform, and therefore, it is not necessary to use the space for displaying the upper limit value and the lower limit value in the limit value mode on the vertical axis, and to effectively utilize the display screen. Can be.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a processing procedure according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an outline of an apparatus as an example provided for carrying out the present invention;

FIG. 3 is an explanatory diagram showing a case where a display pattern displayed in a reference information display field in a method of the present invention is a unit value mode.

FIG. 4 is an explanatory diagram showing a case where a display pattern displayed in a reference information display column in a method of the present invention is a limit value mode.

FIG. 5 is an explanatory view showing a display pattern example of reference information on a display screen according to a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Device main body 12 CPU 13 Operation part 14 Input part (including A / D converter) 15 Memory means 16 RAM 17 VRAM 18 Controller 19 Display means 20 Display screen 21 Scale line 22 Meridian 23 Latitude 24 Waveform 25 Reference information display field 26 switch

Claims (1)

(57) [Claims] An operation unit for performing a necessary input operation, an input unit for digitizing data to be measured taken in response to the input operation from the operation unit and inputting the digitized data to the apparatus main body; A memory means capable of writing and reading data; a display means capable of displaying a waveform via a controller; and a CPU for controlling the components of the components at least. When displaying a waveform through the display screen partitioned by the scale lines, the display pattern currently displayed in the reference information display column on the display screen per one scale is displayed each time an alternate input is made from a switch provided in advance. If the unit value mode indicates the magnitude of the value of the threshold value mode, the upper limit value and the lower limit value of the voltage value on the vertical axis are displayed as signed values, respectively. If so, a method for displaying reference information on a display screen of a waveform measuring apparatus, wherein the display is switched to a unit value mode and displayed at the same position .