JP2003240804A - Waveform display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waveform display device allowing proper grasp of a correlation between an indicator and information related to an optional position on the displayed waveform indicated by the indicator and allowing rapid and precise reading of information such as a measurement value related to the position. <P>SOLUTION: This waveform display device is provided with at least one indicator, which designates and indicates an optional position on the displayed waveform and at least one balloon block displayed in the vicinity of the indicator and moving while interlocking with the indicator. Inside the balloon block, the information related to the optional position on the displayed waveform designated and indicated by the indicator is displayed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform display device, and more particularly, to improvement of a function of displaying arbitrary position information on a displayed waveform.

[0002]

2. Description of the Related Art Conventionally, in a waveform display device such as a digital oscilloscope, an arbitrary position on the displayed waveform is designated and displayed by, for example, a cursor, and measurement value information related to the position is digitally displayed. There is.

FIG. 5 is a diagram showing a display example of a conventional digital oscilloscope, which shows four measurement channels CH1 to CH1.
An example is shown in which the measured waveforms of CH4 are displayed in respective display areas divided in the vertical direction so as not to overlap each other.

Markers M1 to M4 are provided on the respective measurement waveforms of the respective measurement channels CH1 to CH4 as index bodies for designating and displaying arbitrary positions of the measurement waveform. These markers M1 to M4 move on the measurement waveform along the measurement waveform.

The values of the markers M1 to M4 in the X axis direction are X1 to X4, and the values in the Y axis direction are Y1 to Y4. Then, with respect to both X and Y, the difference between the values of X2 and X3 and Y2 to Y3 with respect to X1 and Y1 is ΔX2 to ΔX3 and ΔY2 to ΔY3, respectively.

In the display example of FIG. 5, these markers M1 to
The measured values associated with the position on the waveform designated and displayed in M4 are collectively displayed in the lower area outside the waveform display area.

FIG. 6 is another display example diagram of the conventional digital oscilloscope.
Cursor C as an index body in the vertical direction so as to cross H4 vertically
1, C2 are provided. These cursors C1 and C2
Moves along the time axis on the display screen.

Here, the values in the X-axis direction of the cursors C1 and C2 are set to X1 and X2, respectively, and the Y of the target measurement channel is set.
The values in the axial direction are Y1 and Y2, respectively. Then, the difference between the values of the cursors C1 and C2 is set to ΔX and ΔY.

In the display example of FIG. 6, these cursors C1,
The respective measured values designated and displayed in C2 are collectively displayed in the lower area in the waveform display area.

[0010]

However, in the case of the display form shown in FIG. 5, since the markers M1 to M4 and the display of the measured values are considerably apart from each other and a lot of information is displayed on the display screen. , It is difficult to associate each of the markers M1 to M4 with each measurement value, and a reading error is likely to occur.

Further, in the display form of FIG. 6, some of the measured values are displayed in the vicinity of the cursors C1 and C2, but the correspondence between the cursors C1 and C2 and the measured values is not clear, and the waveform image is further displayed. Since there is a partial overlap between the measured value display and the measured value display, there is a problem that the measured value is difficult to read.

The present invention focuses on these problems, and its purpose is to accurately grasp the correspondence relationship between the index body and the information related to an arbitrary position on the display waveform designated and displayed by the index body. It is an object of the present invention to provide a waveform display device capable of quickly and accurately reading information such as measurement values related to position.

[0013]

According to the invention of claim 1, which achieves such an object, at least one index body for designating and displaying an arbitrary position on a display waveform, and an index body displayed near the index body. A waveform display device comprising at least one balloon block that moves in conjunction with the balloon, and displaying information related to an arbitrary position on the display waveform designated and displayed by the index body in the balloon block. Is.

According to a second aspect of the present invention, in the waveform display device according to the first aspect, the position-related information is a waveform measurement value,
It is characterized by being at least one of a calculation result, a message memo, and a help message.

According to a third aspect of the present invention, in the waveform display apparatus according to the second aspect, at least one of the information related to the position in the balloon block is selectively turned on / off.

The invention of claim 4 is from claim 1 to claim 3.
In the waveform display device described in any one of (1) to (5), the waveforms of a plurality of measurement channels are displayed.

The invention of claim 5 is from claim 1 to claim 4.
In the waveform display device described in any one of (1) to (5) above, the indicator and the balloon block are selectively displayed on and off.

As a result, the correspondence between the index body and the balloon block is clarified, and the information relating to the position is displayed in the corresponding balloon block, so that the reading error does not occur.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a display screen showing an example of an embodiment of the present invention, and portions common to FIG. 5 are designated by the same reference numerals. The difference between FIG. 1 and FIG. 5 is that in FIG. 1, each marker M1 to M4 has a balloon block B.
1 to B4 are provided, and information related to an arbitrary position on the display waveform designated and displayed by each of the markers M1 to M4 is displayed in each of the balloon blocks B1 to B4.

In FIG. 1, the values of the markers M1 to M4 in the X axis direction are X1 to X4, and the values in the Y axis direction are Y1 to Y4. And for X and Y, X
Based on 1 and Y1, the difference between the values of X2 to X4 and Y2 to Y4 is ΔX2 to ΔX4 and ΔY2 to ΔY4, respectively.

A marker M is provided in the balloon block B1.
Measurement values X1 and Y1 at positions on the display waveform of the measurement channel CH1 designated and displayed by 1 are displayed.

A marker M is provided in the balloon block B2.
2, the measured values X2 and Y2 at the position on the display waveform of the measurement channel CH2 designated and displayed, and the differences ΔX2 and ΔY2 from the measured values X1 and Y1 are displayed.

A marker M is provided in the balloon block B3.
3, the measured values X3, Y3 at the positions on the display waveform of the measurement channel CH3 designated and displayed, and the differences ΔX3, ΔY3 from the measured values X1, Y1 are displayed.

A marker M is provided in the balloon block B4.
4, the measured values X4 and Y4 at the positions on the display waveform of the measured channel CH4 designated and displayed, and the differences ΔX4 and ΔY4 from the measured values X1 and Y1 are displayed.

FIG. 2 is a diagram showing an example of a display screen showing another example of the embodiment of the present invention, and the same parts as those in FIG. 6 are designated by the same reference numerals. The difference between FIG. 2 and FIG. 6 is that in FIG. 2, balloon blocks B5 and B6 are provided at the intersections of the cursors C1 and C2 with the waveform of interest, and the cursors C1 and C2 are located in the balloon blocks B5 and B6. That is, the information related to an arbitrary position on the display waveform to be designated and displayed is displayed.

In FIG. 2, the values of the cursors C1 and C2 in the X-axis direction are X1 and X2, the values of the target measurement channel CH1 in the Y-axis direction are Y1 and Y2, respectively, and the difference between the values of the cursors C1 and C2 is shown. Let ΔX and ΔY.

In the balloon block B5, the cursor C
Measurement values X1 and Y1 at positions on the display waveform of the measurement channel CH1 designated and displayed by 1 are displayed.

In the balloon block B6, the cursor C
The measurement values X2 and Y2 at the positions on the display waveform of the measurement channel CH1 designated and displayed by 2, the differences ΔX and ΔY between the values of the cursors C1 and C2, and the reciprocal 1 / ΔX of the difference ΔX are displayed.

On these display screens, the balloon blocks B1 to B6 are controlled so as to move in association with the movement of the intersections of the markers M1 to M4 and the cursors C1 and C2 with the waveform of interest. By tracing the balloon positions of the balloon blocks B1 to B6, the positions of the intersections of the markers M1 to M4 and the cursors C1 and C2 with the waveform of interest can be accurately grasped.

Then, in each of the balloon blocks B1 to B6, the markers M1 to M4 and the cursors C1 and C2 are arranged.
Since information related to an arbitrary position on the display waveform designated by is displayed, it will not be mistaken as information of other measurement channels.

The information related to the position displayed in each of the balloon blocks B1 to B6 may be at least one of a waveform measurement value, a calculation result, a message memo, and a help message, and is not limited to the measurement value. Absent.

Further, at least one of the information related to the position displayed in each of the balloon blocks B1 to B6 may be selectively turned on / off as needed, and a display form suitable for the purpose may be used. Is obtained.

The number of blowing blocks is not limited to one for each measurement channel, but may be two or more.

Further, each of the markers M1 to M4, the cursors C1 and C2, and the balloon blocks B1 to B6.
Also, for example, when they overlap each other, either one may be selectively turned on / off as needed, and a display form suitable for the intended use can be obtained.

FIG. 3 is a block diagram showing a concrete example of a waveform display device configured to perform these displays, and the respective parts are connected to each other by a bus.

An analog waveform signal to be measured is input to the input terminal 1. The analog waveform signal is adjusted by the input section 2 to have an amplitude suitable for the conversion characteristic of the A / D converter 3. The A / D converter 3 converts an analog waveform signal into a digital signal. The output data of the A / D converter 3 is stored in the sequential measurement data memory 4. The arithmetic control unit 6
Based on the measurement data stored in the measurement data memory 4, statistical processing of the measurement data for each measurement channel, pass / fail judgment of the measurement result, addition / subtraction multiplication / division processing between the measurement channels, etc. are executed, and according to the present invention. It also carries out processing such as interlocking display of indicator bodies such as markers and cursors with balloon blocks, and display control of various measured values in balloon blocks.

The arithmetic memory 5 stores various data associated with a series of arithmetic operations by the arithmetic controller 6. The measurement data memory 4, the calculation memory 5 and the RAM 8
Each may be functionally / physically independent, or may be one that is physically integrated and functionally separated for proper use.

The operation unit 7 is used by the operator to instruct various operation processes to the arithmetic control unit 6 while looking at the display screen of the display unit 10, and is composed of a keyboard, various switches, a mouse and the like. To be done.

The RAM 8 stores the calculation data of the above-mentioned calculation control unit 6 and the measurement condition parameters which are appropriately set according to the purpose of measurement. Also, depending on the configuration,
Display screen data displayed on the display unit 10 is also stored.

The ROM 9 stores fixed measurement condition parameters peculiar to the apparatus and execution programs.

The display unit 10 displays the measurement waveform screen as shown in FIGS.

The recording unit 11 prints out various information related to the operation of the apparatus including the measured waveform screen displayed on the display unit 10.

FIG. 4 is a flow chart showing an example of the operation of FIG. 3, and the display example of FIG. 1 will be described. Step SP1 is the conventional marker function state, and the marker is displayed on the waveform display screen. In this state, the X-axis value, Y-axis value, position, etc. designated by the marker are displayed outside the waveform display area as shown in FIG. 5 or below the waveform display area as shown in FIG.

At step SP2, an item for cursor follow-up display to be displayed in the balloon block beside the marker is selected. The item is an X-axis value, a Y-axis value, a position, or the like. The item selected here can be displayed in the balloon block as a cursor tracking display screen.

At step SP3, ON / OFF of the cursor tracking display is selected. If ON is selected here, the X-axis value, Y-axis value, and position items displayed outside the waveform display area or below the waveform display area disappear, and instead of these, the items selected in step SP2. The item is displayed in the balloon block next to the marker as shown in FIG. Here, the blowing direction of the blowing block beside the marker is set to the left side of the marker when the position of the marker is right of the center of the waveform display screen, and to the right side when the position of the marker is left.

At step SP4, the marker is moved along the waveform to an arbitrary position where the value on the waveform is desired to be seen.

In step SP5, step SP2
The value of each item selected in is recalculated and displayed at the specified position of the marker. If the marker is further moved, the process returns to step SP4.

In step SP6, by turning off the marker function, the cursor following display according to the present invention is also turned off.

In the above embodiment, the example applied to the digital oscilloscope is shown, but the present invention can also be applied to a power meter or a recorder having a waveform display function.

[0050]

As described above, according to the present invention,
Waveform display device capable of accurately grasping the correspondence between the index body and the information related to any position on the display waveform designated and displayed by the index body, and quickly and accurately reading the information such as the measurement value related to the position Can be realized.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a display screen of the present invention.

FIG. 2 is another example of a display screen of the present invention.

FIG. 3 is a block diagram of essential parts of an embodiment of the present invention.

FIG. 4 is a flowchart illustrating a flow of operations of the present invention.

FIG. 5 is a diagram showing an example of a conventional display screen.

FIG. 6 is another example of a conventional display screen.

[Explanation of symbols]

1 input terminal 2 Input section 3 A / D converter 4 Measurement data memory 5 arithmetic memory 6 Arithmetic control unit (CPU) 7 Operation part 8 RAM 9 ROM 10 Display 11 Recording section

Claims (5)

[Claims] 1. A balloon block, comprising: at least one index body for designating and displaying an arbitrary position on a display waveform; and at least one balloon block displayed near the index body and moving in conjunction with the index body. A waveform display device in which information related to an arbitrary position on a display waveform designated and displayed by an index body is displayed. 2. The waveform display device according to claim 1, wherein the information relating to the position is at least one of a waveform measurement value, a calculation result, a message memo, and a help message. 3. The waveform display device according to claim 2, wherein at least one of the information related to the position in the balloon block is selectively turned on and off. 4. The waveform display device according to claim 1, wherein waveforms of a plurality of measurement channels are displayed. 5. The waveform display device according to claim 1, wherein the index body and the balloon block are selectively turned on and off.