JP5354451B2 - Waveform measuring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waveform measuring device capable of performing history search with intuitive operation feeling. <P>SOLUTION: The waveform measuring device is configured such that a searching zone is set at least in a part of a waveform display, and the waveform data where part of the waveform is involved in the set search zone is extracted from all history waveform data stored in the history memory and is displayed. The device is constituted with a position designating means designating a desired position on the waveform display and a search zone setting means displaying the search zone at the position designated by the position designating means. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a waveform measuring apparatus such as an oscilloscope, and more particularly to search and display of waveform data stored in a history memory.

  One of the functions of the oscilloscope is a history search function. This function sets the desired search zone in at least a part of the waveform screen, so that the waveform data that includes a part of the waveform in the search zone set from all the history waveform data stored in the history memory Is extracted and displayed.

  FIG. 5 is a block diagram showing an example of a conventional waveform measuring apparatus having such a history search function. In FIG. 5, the measuring unit 1 converts an analog input signal Ain into digital data by an A / D converter (not shown) and inputs the digital data to the history memory 2. The history memory 2 stores a plurality of screen waveform data based on digital data converted and output from the measurement unit 1.

  The search zone setting unit 3 sets a desired search zone in at least a part of the display screen of the display unit 6 and stores it in the search unit 4 by dragging the cursor with a mouse, for example. When the search zone is set and the execution of the history search is instructed, the search unit 4 includes a waveform in which a part of the waveform is included in the set search zone from all the history waveform data stored in the history memory 2. Data is extracted and output to the screen generator 5.

  The screen generation unit 5 generates a display screen for displaying all the waveform data extracted by the search unit 4 on the display unit 6 and outputs the display screen to the display unit 6. Thereby, the entire history waveform data, the search zone, and all the waveform data including a part of the waveform in the search zone are displayed on the display unit 6 in an identifiable manner.

  FIG. 6 is a screen example illustrating the operation of FIG. On the screen (A), all history waveform data AW stored in the history memory is displayed. In this example, one rectangular wave RW is selectively displayed with high luminance among all history waveform data AW. On the screen (B), the search zone RZ is set and displayed on the screen (A).

  On the screen (C), the waveform data SW including a part of the waveform in the set search zone RZ is extracted from all the history waveform data stored in the history memory 2, and a plurality of waveform data SW is extracted. When one of them is extracted, one of them is selected by a selection means such as a rotary knob and displayed with high luminance.

  Patent Document 1 describes a configuration of a waveform recording apparatus that can easily search for abnormal waveforms from waveform data stored in a history memory.

JP 2000-292449 A

  However, according to such a conventional configuration, the search zone RZ is set for all the history waveform data AW, and the waveform data SW including a part of the waveform in the search zone RZ is extracted and displayed. There is a problem that the operation is complicated and not intuitive.

  The present invention has been made in view of such problems, and an object of the present invention is to realize a waveform measuring apparatus capable of performing history search with an intuitive operation feeling.

In order to solve such a problem, the invention of claim 1
A search zone is set in at least a part of the waveform screen, and waveform data including a part of the waveform in the set search zone is extracted from all history waveform data stored in the history memory and displayed. In the waveform measuring apparatus configured in
Position specifying means for specifying a desired position on the waveform screen;
The search zone setting means for displaying the search zone at the position designated by the position designation means ,
The position specifying means is any one of a touch panel, a mouse and a cursor key,
The search zone setting means displays a zone selection screen consisting of a plurality of types of zone patterns of different sizes on the waveform screen as necessary, and selects a search zone of a size with a desired pattern according to the search purpose. A zone customizing section to be set, and a zone moving section for dragging and displaying a search zone selected and set by the zone customizing section on the waveform screen,
It is characterized by including .

The invention according to claim 2 is the waveform measuring apparatus according to claim 1,
A plurality of waveforms extracted by the search zone are sequentially switched and displayed with high luminance while maintaining display of all history waveform data .

  According to these waveform measuring apparatuses, history search can be performed with an intuitive operation feeling.

  The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention, and the same reference numerals are given to portions common to FIG. The difference between FIG. 1 and FIG. 5 is the configuration of the search zone setting units 7 and 3. The display unit 6 is provided with a touch panel function.

  The search zone setting unit 7 includes a zone customizing unit 71, a zone moving unit 72, a storage unit 73, an operation control unit 74, and the like.

  The zone customization unit 71 displays a zone selection screen ZS composed of a plurality of types of zone patterns having different sizes as shown in FIG. Select and set the appropriate one.

  The zone moving unit 72 causes the search zone selected and set by the zone customizing unit 71 to be dragged on the display screen of the display unit 6 and displayed at a desired position.

  The storage unit 73 stores a zone selection screen ZS as shown in FIG. 2 and a dialog box screen DB described later.

  The operation control unit 74 controls the operation of the entire search zone setting unit 7.

  FIG. 3 is a screen example illustrating the operation of FIG. On the screen (A), all history waveform data AW stored in the history memory is displayed. In this example, of all the history waveform data AW, the rectangular wave RW is selectively displayed with high luminance.

  On the screen (B), when a finger touches a waveform to be searched, a search zone RZ having a predetermined size is automatically displayed in a predetermined pattern initially set at that location. The position of the search zone RZ can be moved to an arbitrary position by dragging it before the finger is released from the screen. The pattern and size of the search zone RZ can be customized according to the search purpose by displaying the zone selection screen ZS of FIG. 2 as necessary.

  When the finger is removed from the screen in the screen state (B), a dialog box DB for confirming whether or not the history search is necessary is displayed as shown in the screen (C).

  In the screen of (C), history search is executed by selecting the OK button in the dialog box DB, and as shown in the screen of (D), set from all history waveform data stored in the history memory 2 Waveform data SW including a part of the waveform in the retrieved zone RZ is extracted and selectively displayed with high luminance.

  On the other hand, by selecting the Cancel button in the dialog box DB on the screen (C), the zone selection screen ZS of FIG. 2 is displayed, and the pattern and size of the search zone RZ can be customized according to the search purpose.

  The selected pattern and size are determined by selecting the OK button on the zone selection screen ZS in FIG. 2, and the screen returns to the screen (A) again. As a result, the customized search zone RZ can be dragged.

  With this configuration, it is possible to perform a history search with a more intuitive operation feeling than in the past.

  Note that the display of the search zone RZ may be omitted on the screen of FIG. If an appropriate search zone RZ can be preset, it is possible to give a sense of touching and selecting a waveform, and the operation becomes more intuitive.

  In addition, the screen of FIG. 3C may be omitted and executed without fail. Under conditions where the search is obvious (for example, when the history menu is open), the operation can be simplified. Furthermore, if the search is executed at the moment of touching with a finger, the search position cannot be finely adjusted by dragging, but the operation becomes more intuitive.

  Further, in FIG. 3D, while maintaining the display of all history waveform data AW, the selected waveform (focused waveform) SW may be replaced with one selected from those hit. With this configuration, when the position touched by the finger is slightly deviated from the target waveform and the search result display is not as expected, it is easy to redo.

  FIG. 4 is a screen example illustrating such an operation. As shown in (A) and (C), each time a finger touches the screen, the history number is stored in the forward direction (or in reverse) representing the storage time of the waveform data stored in the history memory 2 from the selected waveform in time series. Search in (direction). Then, as shown in (B) and (D), the first hit waveform is focused and selectively displayed with high luminance.

  In the above embodiment, an example in which the display unit 6 is configured as a touch panel and is touched with a finger has been described. However, the present invention is not limited to this. Then, it may be moved or selected.

  The waveform measuring apparatus according to the present invention is not limited to an oscilloscope, and extracts waveform data including a part of the waveform in a set search zone from all history waveform data stored in the history memory. The present invention can be applied to all types of waveform measuring devices having a history search function for display.

  As described above, according to the present invention, it is possible to realize a waveform measuring apparatus capable of performing history search with an intuitive operation feeling.

It is a block diagram which shows one Example of this invention. It is a specific example figure of the zone selection screen ZS. It is a screen example figure explaining operation | movement of FIG. It is another example screen figure explaining operation | movement of FIG. It is a block diagram which shows an example of the conventional waveform measuring apparatus which has a history search function. FIG. 6 is a screen example for explaining the operation of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Measurement part 2 History memory 4 Search part 5 Screen generation part 6 Display part 7 Search zone setting part

Claims (2)

A search zone is set in at least a part of the waveform screen, and waveform data including a part of the waveform in the set search zone is extracted from all history waveform data stored in the history memory and displayed. In the waveform measuring apparatus configured in
Position specifying means for specifying a desired position on the waveform screen;
The search zone setting means for displaying the search zone at the position designated by the position designation means ,
The position specifying means is any one of a touch panel, a mouse and a cursor key,
The search zone setting means displays a zone selection screen consisting of a plurality of types of zone patterns of different sizes on the waveform screen as necessary, and selects a search zone of a size with a desired pattern according to the search purpose. A zone customizing section to be set, and a zone moving section for dragging and displaying a search zone selected and set by the zone customizing section on the waveform screen,
Waveform measuring apparatus which comprises a. 2. The waveform measuring apparatus according to claim 1 , wherein a plurality of waveforms extracted by the search zone are sequentially switched and displayed with high luminance while maintaining display of all history waveform data .