JP2002082133A - Waveform display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waveform display device which accomplishes operation of inputting comment, marking or the like for waveforms being observed in a real time, while observing the waveforms along with the simplification thereof. SOLUTION: A waveform measuring device 5 for displaying waveforms on a liquid crystal display 4 includes a touch-screen type input interface 1 having a position resolving power capable of pen inputting, a memory 3 for screen display which stores display data to be shown on the liquid crystal display 4, when an operation is made for the input interface 1, a CPU 2 which separately controls the touch screen processing of the input interface 1, the writing/ reading processing for the memory 3 for screen display and the display processing of the liquid crystal display 4.

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 having a waveform display function.

[0002]

2. Description of the Related Art A conventional waveform display device, for example, a waveform measuring instrument, has a function of inputting a comment by an operator at the time of waveform observation, and a function of setting a cursor and performing a desired operation in a specific range on a waveform. There are things.

In such a waveform measuring instrument, when a comment on a waveform is input, a software keyboard 10 as shown in FIG. 3 is called on a display screen. Then, the operator operates the jog dial 11 to select an input character while watching the display screen, presses the enter key 12 to determine the selected character, and performs input processing. Also, when the position of the cursor 13 is set on the waveform, the position is selected by the jog dial 11 and the enter key 12 is pressed for deciding the selected contents, as in the case of character input.

[0004]

In the above-mentioned conventional waveform measuring instrument, when a comment or marking is input to a waveform under observation, the software keyboard 10 is called,
Select an input character with the jog dial 11 and press the enter key 12
, Or a complicated operation of selecting the position of the cursor 13 with the jog dial 11 and deciding with the enter key 12 is required.

In addition, since these operations must be performed while the waveform measurement is temporarily stopped, it is impossible to perform marking and comment input for the waveform being measured in real time. In addition, there is a problem in that only characters specified by the software keyboard 10 can be input.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and simplifies input operations such as comments and markings on a waveform being observed and observes the waveform. It is an object of the present invention to provide a waveform display device which can perform the operation in real time.

[0007]

In order to achieve the above object, a waveform display device of the present invention is a waveform display device for displaying a waveform on a screen. An input interface, storage means for storing display data to be displayed on the screen when an operation is performed on the input interface, touch screen processing of the input interface, write / read processing to the storage means, and screen display processing And a control means for controlling each of the waveform display devices.

In the waveform display device of the present invention, since touch screen processing with high accuracy can be performed by pen input, input operations such as comments and markings on the waveform being observed can be easily performed while performing waveform measurement (observation). Can be done in real time. Further, display contents including markings and comments can be electronically recorded in the storage means as display data, so that the display data can be read out and used when necessary.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on an embodiment of the present invention with reference to the drawings. FIG. 1 is a waveform measuring device (waveform display device) according to the present embodiment.
3 is a block diagram showing a control system in FIG.

As shown in FIG. 1, a control system of the present waveform measuring instrument includes a liquid crystal display (screen) 4 for displaying a waveform and the like.
A touch screen type input interface 1 having a position resolution capable of pen input; a screen display memory (storage means) 3 for storing display data to be displayed on the liquid crystal display 4 when the input interface 1 is operated; , The touch screen processing of the input interface 1, the writing / reading processing to / from the screen display memory 3, and the display processing of the liquid crystal display 4, respectively.
And a CPU (control means) 2.

FIG. 2 is a front view showing the outer shape of the present waveform measuring instrument. In the figure, a waveform measuring instrument 5 has a liquid crystal display 4 at the upper left, which allows direct input using a touch pen 6, a jog dial 7 to the right of the liquid crystal display 4, and various switches 9 below it. Each has. The waveform measuring device 5 includes a display method for moving an input comment or the like on a screen with the passage of time,
It is possible to select one of a display method for always displaying the same position on the screen.

Hereinafter, the operation of the present waveform measuring instrument having the above control system will be described. That is, when displaying a waveform on the liquid crystal display 4 and observing the waveform, when the operator wants to write a comment or a marking on the waveform being observed, the operator holds the touch pen in his hand with the waveform displayed. 6 directly writes on the liquid crystal display 4.

In this case, an input is made to the touch screen via the input interface 1 and the CPU
According to the control of 2, the time axis information and the information in the vertical direction (corresponding to the voltage data of the waveform) at the position where the comment or the marking is input are stored in the screen display memory 3 together with the displayed waveform data, At the same time, comments and markings are displayed on the liquid crystal display 4.

As described above, the waveform measuring device 5 performs high-precision touch screen processing with the touch pen 6 so as to write comments and markings on a waveform recorded on paper, and increases the resolution of the touch screen by pen input. For example, a Japanese input can be performed in response. This makes it possible to easily and intuitively and in real time perform input operations such as comments and markings on the waveform under observation while measuring the waveform.

Further, display contents including markings and comments can be electronically recorded in the screen display memory 3 as display data, so that the display data can be read out and used when necessary.

In the deformation and horizontal development by the waveform measuring device 5, not only the waveform under measurement but also the waveform stored in the screen display memory 3 can be input in the same manner. When outputting a hard copy of a waveform, intuitive comment input and marker / cursor setting can be performed.

In the present embodiment, the present invention is applied to a waveform measuring instrument. However, the present invention is not limited to this. For example, the present invention is applied to an input interface of a measuring instrument other than a waveform measuring instrument which has a waveform display. Or an input interface in the field of industrial paperless recorders and the like.

Although the present invention has been described based on the preferred embodiment, the waveform display device (waveform measuring device) of the present invention is not limited to the configuration of the above-described embodiment. Waveform display devices obtained by making various modifications and changes from the configuration of the embodiment are also included in the scope of the present invention.

[0019]

As described above, according to the present invention, input operations such as comments and markings on a waveform being observed can be performed.
It is possible to provide a waveform display device that can be simplified and performed in real time while observing a waveform.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control system of a waveform measuring instrument according to an embodiment of the present invention.

FIG. 2 is a front view schematically showing the outer shape of the waveform measuring instrument according to the embodiment.

FIG. 3 is a diagram showing a software keyboard in a conventional waveform measuring instrument.

[Explanation of symbols]

 Reference Signs List 1 input interface 2 CPU 3 screen display memory 4 liquid crystal display 5 waveform measuring instrument 6 touch pen 7 jog dial 9 various switches

Claims (1)

[Claims] 1. A waveform display device for displaying a waveform on a screen, comprising: a touch screen type input interface having a position resolution capable of inputting by a pen; and an input interface to be displayed on the screen when the input interface is operated. A waveform display device comprising: storage means for storing display data; and control means for controlling touch screen processing of the input interface, writing / reading processing to / from the storage means, and screen display processing.