JPH11326392A - Waveform measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate an enlarged display of a specific waveform with an easily observable waveform display by displaying a plurality of input waveform signal in respectively divided display regions, and enlarging and displaying the waveform signal of a specific display region in a vertical axis direction. SOLUTION: The waveform measuring instrument comprises a measuring means 11, a memory 12, a display means 13, and a rotary encoder 14. The means 11 inputs a plurality of waveform signal, and digitizes them. The memory 12 stores a digital value from the means 11. The means 13 reads a digital value from the memory 12, displays the signal at easy divided display region in a vertical axis direction, enlarges a vertical axis of the specific display region, enlarges the signal of the specific display region in a vertical axis direction, and displays it on a display unit D. The encoder 14 specifies the display region enlarging in the vertical axis of the means 13. With the thus constitution, the waveform display can be easily observed, and the specific waveform can be easily enlarged and displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform measuring instrument for inputting and displaying a plurality of waveform signals, and more particularly, to a waveform measuring instrument capable of easily displaying a waveform and easily enlarging and displaying a specific waveform.

[0002]

2. Description of the Related Art A waveform measuring instrument such as a digital oscilloscope or an analyzing recorder inputs a plurality of waveform signals and displays the waveform signals. As a method of displaying the plurality of waveform signals, there are a method of displaying the display area by dividing the display area for each signal, and a method of displaying the same by overlapping and displaying the same display area.

FIG. 4 is a diagram showing an example in which a display area is divided for each signal and displayed. The display areas D1 to D4 for waveforms include:
Different waveform signals a to d are displayed.

FIG. 5 is a diagram showing an example in which the same waveform display area is overwritten and displayed. In the waveform display area Da, different waveform signals a to d are displayed in an overlapping manner.

[0005]

In the method in which the display area is divided for each signal and displayed, all the waveforms are displayed in an equal size, so that the focused waveform signal cannot be enlarged.

In the method of overwriting in the same display area, the waveforms are displayed in an overlapping manner, so that it is difficult to see.
The vertical display position can be adjusted for each waveform and the waveform can be scaled up and down in the vertical axis direction, but the operation is complicated and time-consuming.

SUMMARY OF THE INVENTION An object of the present invention is to provide a waveform measuring instrument capable of easily displaying a waveform and easily enlarging and displaying a specific waveform.

[0008]

According to the present invention, a plurality of waveform signals are inputted and displayed on a waveform measuring instrument for displaying a plurality of waveform signals in a display area divided in a vertical axis direction and a specific display. It is characterized by having display means for enlarging the vertical axis of the area and enlarging and displaying the waveform signal of this specific display area in the vertical axis direction.

According to the present invention, the display means displays a plurality of input waveform signals for each divided display area.
Then, the display means enlarges the vertical axis of the specific display area, and enlarges and displays the waveform signal of the specific display area in the vertical axis direction.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing one embodiment of the present invention. FIG. 2 is an external view of the apparatus of FIG.

In FIG. 1, a waveform measuring instrument 1 measures an object to be measured and displays a plurality of waveform signals a to d. The waveform measuring device 1 includes a measuring unit 11, a storage unit 12, and a display unit 1.
3 and a rotary encoder 14 and a display D.

The measuring means 11 receives a plurality of waveform signals a to d from the object to be measured and converts them into digital values. The storage unit 12 stores the digital value from the measuring unit 11.
The display means 13 outputs a plurality of waveform signals a to d from the storage unit 12.
Is read, and a plurality of waveform signals a to d are displayed in each of display areas D1 to D4 divided in the vertical axis direction, and the vertical axis of a specific display area is enlarged, and the waveform signal of this specific display area is displayed. Is enlarged in the vertical axis direction and displayed on the display D. The rotary encoder 14 is a selection unit that specifies a display area for enlarging the vertical axis of the display unit 13.

The operation of such a device is described below.
In the first state (the state of FIG. 2), the display area D1 has a wide waveform area in the vertical axis direction, and the display areas D2 to D4 have a narrow display area. At this time, the waveform signal a is also displayed with its vertical axis enlarged corresponding to the display area D1.

Then, by operating the rotary encoder 14, the display area D2 is a waveform area having a wide vertical axis direction, and the display areas D1 and D3 to D4 are narrow display areas. That is, the state shown in FIG. At this time, the waveform signal a is displayed in the vertical axis direction corresponding to the waveform area D1, and the waveform signal b is displayed in the vertical axis direction corresponding to the waveform area D2 in an enlarged manner.

Similarly, by operating the rotary encoder 14, a waveform region having a wide vertical axis direction is changed from D1 to D
The order changes from 2 to D3 to D4 to D1. Accordingly, the waveform signal is also enlarged and displayed in the vertical axis direction as a → b → c → d → a.

By operating the rotary encoder 14 in the reverse direction, a waveform region having a wide vertical axis
The order changes from 1 to D4 to D3 to D2 to D1. Along with this,
The waveform signal is also enlarged and displayed in the vertical axis direction as a → d → c → b → a.

As described above, the display means 13 enlarges and displays the vertical axis of the display area specified by the rotary encoder 14, and also enlarges and displays the waveform signal of the specified display area. It is easy to see and a specific waveform can be easily enlarged and displayed.

Since the display area is sequentially changed by the rotary encoder 14, the display area (waveform signal) to be enlarged can be easily changed.

The present invention is not limited to this, and has shown the case where the selection means is the rotary encoder 14, but a mouse or the like may be used.

[0020]

According to the present invention, the following effects can be obtained. According to Claims 1 and 2, the display means enlarges and displays the vertical axis of the display area specified by the selection means, and similarly enlarges and displays the waveform signal of the specified display area.
The waveform display is easy to see, and a specific waveform can be easily enlarged.

According to the third aspect, since the selection means is a rotary encoder, the display area can be changed sequentially, so that the display area (waveform signal) to be enlarged can be easily changed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is an external view of the apparatus of FIG.

FIG. 3 is an external view of the apparatus of FIG.

FIG. 4 is a diagram showing an example in which a display area is divided for each signal and displayed.

FIG. 5 is a diagram showing an example in which the same waveform display area is overwritten and displayed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Measuring means 12 Storage part 13 Display means 14 Rotary encoder

Claims (3)

[Claims] 1. A waveform measuring device for inputting and displaying a plurality of waveform signals, wherein the plurality of waveform signals are displayed for each display area divided in a vertical axis direction, and a vertical axis of a specific display area is enlarged. A waveform measuring device comprising display means for enlarging and displaying the waveform signal in the specific display area in the vertical axis direction. 2. A waveform measuring device for inputting and displaying a plurality of waveform signals, a measuring means for inputting a plurality of waveform signals and converting them into digital values, and a storage unit for storing digital values from the measuring means. Reading the digital values of the plurality of waveform signals from the storage unit, displaying the plurality of waveform signals for each display area divided in the vertical axis direction, and enlarging the vertical axis of a specific display area;
A waveform measuring instrument comprising: display means for enlarging and displaying a waveform signal of a specific display area in a vertical axis direction; and selecting means for specifying a display area for enlarging a vertical axis of the display means. 3. The waveform measuring device according to claim 2, wherein the selecting means is a rotary encoder.