JP2005181182A - Waveform-measuring apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a waveform measuring apparatus and a waveform-measuring method capable of efficiently displaying a waveform of desired waveform data. <P>SOLUTION: This invention is acquired, by improving a waveform measuring apparatus which stores a plurality of waveform data acquired by measuring a waveform to be measured, on the basis of a trigger signal in a data storage part and which displays the waveform of the waveform data in the data storage part on a display part. The apparatus comprises an identification information storage part for storing identification information; a marking means for storing the identification information for identifying desired waveform data among the waveform data of the data storage part in the identification information storage part; and a selection means for selecting the waveform data of the data storage part, on the basis of the identification information of the identification information storage part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a waveform measuring apparatus and a waveform measuring method for storing a plurality of waveform data obtained by measuring a measured waveform with a trigger signal as a reference in a data storage unit and displaying waveform data, analysis results, and the like in the data storage unit on a display unit. Specifically, the present invention relates to a waveform measuring apparatus and a waveform measuring method capable of efficiently displaying desired waveform data in the form of a waveform.

  The waveform measurement device is, for example, a digital oscilloscope, and the measurement unit measures the waveform to be measured, converts it into waveform data of a digital signal, and stores it in an acquisition memory that is a data storage unit. The display processing unit reads and analyzes the waveform data stored in the acquisition memory, and displays the analysis results and waveform data on the display screen of the display unit. Widely used in development, quality control, maintenance work, etc.

  The waveform measuring apparatus can store a plurality of waveform data satisfying a desired condition in the acquisition memory using the trigger signal. As described above, the acquisition memory sequentially stores the waveform data measured for each trigger signal, and is also called a history memory (see, for example, Patent Document 1). In recent years, the capacity of history memory has increased, and tens to thousands of waveform data can be stored.

  FIG. 6 is a diagram illustrating an example of waveform data D (1) to D (n) stored in the history memory. The waveform data D (1) to D (n) are shown in an overlapping manner. FIG. 7 is an example showing the front surface of the waveform measuring apparatus. In FIG. 7, a display screen Disp of a display unit provided on the upper side of the apparatus is, for example, a CRT or a liquid crystal, and waveform data D (1) to D (n) are displayed in a waveform. Waveforms to be measured are input to a plurality of input terminals IN provided on the lower side of the apparatus. A plurality of buttons and a rotary knob provided between the display screen Disp and the input terminal IN are operation units for the user to operate the apparatus main body. FIG. 8 is a flowchart for explaining the operation of the waveform measuring apparatus.

  When the measurement unit measures the waveform to be measured, for example, when a waveform to be measured that meets a simple condition such as an edge trigger is input, a trigger signal is generated, and waveform data D (1) to D (D) is generated for each trigger signal. (N) is acquired and stored in the history memory (S10).

  The display processing unit performs waveform display and waveform analysis of the waveform data D (1) to D (n), and displays the waveform data D (1) to D (n) of the history memory one by one on the display screen Disp. Since it is difficult to search the waveform data D (1) to D (n) to be analyzed, the waveform data is searched under a desired search condition (the waveform data search is also called a history search), and the waveform is searched. The data D (1) to D (n) are narrowed down. For example, search is performed on the waveform data D (2), D (4), and D (9) under the search condition A shown in FIG. 6 (in which noise is mixed near the maximum value and the waveform is distorted) (S11). ). Then, the searched waveform data D (2), D (4), D (9) are displayed one by one on the display screen Disp one by one in order, and if necessary, waveform analysis is performed and the analysis result is expressed (S12).

  When a history search is performed under different search conditions, a search is performed under a new search condition, for example, search condition B shown in FIG. 6 (the waveform is distorted near the minimum value), and waveform data D (3), D (8) is narrowed down and waveform analysis is performed (S13, S11 to S12). On the other hand, when the waveform analysis of the waveform data D (1) to D (n) is finished, the waveform measurement and the waveform analysis are finished (S13).

Japanese Unexamined Patent Publication No. 2000-292449 (paragraph numbers 0002-0004, FIG. 4-5)

  In waveform analysis, shapes generated at different sites are often compared to clarify the cause of abnormal phenomena. In preparing a report, it is necessary to compare several types of abnormal waveforms and normal waveforms. Therefore, the waveform data D (1) to D (n) are narrowed down under various search conditions A and B, and the waveform data D (1) to D (n) for comparison are selected from those narrowed down. There is a need.

  However, when a history search is performed under the search condition B as shown in FIG. 6, the waveform data D (2), D (4), and D (9) as search results narrowed down by the previous search condition A are discarded. . For example, a case will be described where the waveform data D (4) narrowed down by the search condition A and the waveform data D (8) narrowed down by the search condition B are compared.

  After performing the waveform analysis of the narrowed-down waveform data D (8) under the search condition B, the history search is performed again under the search condition A to search for the waveform data (2), D (4), and D (9). Then, the waveform data D (2), D (4), D (9) as search results are displayed one by one on the display screen Disp one by one in order, and the waveform analysis is performed after selecting the desired waveform data D (4). There is a need to do. Therefore, there is a problem that it is difficult to efficiently display only the desired waveform data D (4) and perform waveform analysis.

  On the other hand, it is conceivable to store the waveform data D (4) as a file and compare it with the waveform data D (8), but it is necessary to perform an operation of reading from the file. In addition to the waveform data D (4) file, a large number of files are often stored, making it difficult to find the desired file, and redisplaying only the desired waveform data D (4) efficiently. Therefore, there is a problem that it is difficult to perform waveform analysis.

  Accordingly, an object of the present invention is to realize a waveform measuring apparatus and a waveform measuring method capable of efficiently displaying desired waveform data.

The invention described in claim 1
In a waveform measuring apparatus for storing a plurality of waveform data obtained by measuring a measured waveform with reference to a trigger signal in a data storage unit, and displaying the waveform data of the data storage unit on a display unit,
An identification information storage unit for storing identification information;
Marking means for storing identification information for identifying desired waveform data in the waveform data of the data storage unit in the identification information storage unit,
Selection means for selecting waveform data in the data storage unit based on the identification information in the identification information storage unit is provided.

The invention according to claim 2 is the invention according to claim 1,
Search means for searching for waveform data that meets a search condition from the waveform data in the storage unit,
The marking means stores identification information for identifying desired waveform data among the waveform data searched by the search means in the identification information storage unit.

The invention according to claim 3 is the invention according to claim 2,
The identification information storage unit stores identification information relating to each waveform data searched by the search means under different search conditions.

The invention according to claim 4 is the invention according to any one of claims 1 to 3,
The display unit is provided with thumbnail display means for reducing the waveform display of the waveform data in the data storage unit and performing waveform display of a plurality of waveform data,
The marking means stores identification information for identifying desired waveform data among the waveform data displayed by the thumbnail display means in the identification information storage unit.

The invention according to claim 5 is the invention according to any one of claims 1 to 4,
Providing a list display means for displaying the waveform data information of the data storage unit on the display unit in a list format;
The marking means stores identification information for identifying desired waveform data among the waveform data displayed by the list display means in the identification information storage unit.

The invention described in claim 6
Waveform measurement that stores the waveform data of the measured waveform in the data storage unit, displays the waveform data of the data storage unit on the display unit, and displays the analysis result obtained by analyzing the waveform data displayed on the waveform In the device
An identification information storage unit for storing identification information;
Among the analysis results of the waveform data, marking means for storing identification information for identifying a desired analysis result in the identification information storage unit,
Selection means for selecting the analysis result based on the identification information stored in the identification information storage unit is provided.

The invention according to claim 7 is the invention according to any one of claims 1 to 6,
A file storage unit for storing the waveform data in a file format;
The marking means stores identification information for identifying a desired file among the files stored in the file storage unit in the identification information storage unit,
The selecting means selects the file in the file storage unit based on the identification information in the identification information storage unit.

The invention according to claim 8 is the invention according to any one of claims 1 to 7,
A help screen storage unit having a plurality of help screens displayed on the display unit for explaining the operation of the apparatus main body;
The marking means stores identification information for identifying a desired help screen among the help screens of the help screen storage unit in the identification information storage unit,
The selection means selects the help screen of the help screen storage unit based on the identification information of the identification information storage unit.

The invention according to claim 9
In a waveform measurement method for storing a plurality of waveform data measured with reference to a trigger signal in a data storage unit, and displaying the waveform data of the data storage unit on a display unit,
Of the plurality of waveform data in the data storage unit, marking the desired waveform data,
And a step of selecting the marked waveform data and displaying the waveform on the display unit.

The present invention has the following effects.
According to the first to eighth aspects, the marking means stores the identification information of desired waveform data in the identification information storage unit among the many waveform data of the data storage unit. When the waveform data is displayed again, only the waveform data selected by the selection means based on the identification information is displayed. Therefore, the desired waveform data can be displayed efficiently or analyzed by waveform analysis. The result can be displayed. Therefore, it is possible to separate the operation of searching for waveform data from the data storage unit and the operation of performing waveform display and waveform analysis of the waveform data, so that waveform display and waveform analysis can be concentrated.

  According to the second aspect, since the marking means stores the identification information of the desired waveform data in the identification information storage unit from the waveform data searched by the search means, it is possible to efficiently search for the desired waveform data. it can.

  According to the third aspect, the identification information storage unit stores the identification information of each waveform data searched by the search means under different search conditions, so that only necessary waveform data can be managed in a unified manner. This eliminates the need to perform waveform display and waveform analysis after performing multiple searches under different search conditions, allowing the desired waveform data to be displayed efficiently and displaying the analysis results by performing waveform analysis. it can.

  According to the fourth aspect, since the marking means stores the identification information of the desired waveform data in the identification information storage section from among the plurality of reduced waveform displays displayed by the thumbnail display means, one mark is displayed on the display section. It is not necessary to display waveforms one by one and store identification information. Thereby, identification information of desired waveform data can be stored efficiently.

  According to claim 5, since the identification information of the desired waveform data is stored in the identification information storage unit from the list displayed by the list display unit, the marking unit displays the waveforms one by one on the display unit in order, There is no need to store identification information. Thereby, identification information of desired waveform data can be stored efficiently.

  According to claim 6, the marking means stores the identification information of the desired analysis result among the plurality of analysis results in the identification information storage unit, and based on the identification information among the analysis results analyzed by the analysis means. Since the analysis result selected by the selection means is displayed, important analysis results can be efficiently displayed.

  According to the seventh aspect, the marking means stores the identification information of a desired file among the many files in the file storage section in the identification information storage section, and the waveform data of the file selected by the selection means based on the identification information Therefore, the desired waveform data can be efficiently displayed, and the analysis result can be displayed by performing waveform analysis.

  According to claim 8, the marking means stores the identification information of the desired help screen among the plurality of help screens in the identification information storage section, and displays the help screen selected by the selection means based on the identification information. The help screen required by the user can be efficiently displayed.

  According to the ninth aspect, when marking desired waveform data out of a large number of waveform data in the data storage unit and displaying the waveform data again, only the marked waveform data is displayed as a waveform. The waveform data can be efficiently displayed, or the analysis result can be displayed by performing waveform analysis. Therefore, it is possible to separate the operation of searching for waveform data from the data storage unit and the operation of performing waveform display and waveform analysis of the waveform data, so that waveform display and waveform analysis can be concentrated.

Embodiments of 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. Here, the same components as those in FIG. In FIG. 1, a measurement unit 10 includes an AD converter 11 and a trigger detection circuit 12, and a waveform to be measured is input from an input terminal IN. The waveform to be measured is converted into a digital signal, and digital for each trigger signal. The signal is stored in the history memory 20 as waveform data. The AD converter 11 outputs the waveform to be measured as a digital signal. The trigger detection circuit 12 generates a trigger signal based on the waveform to be measured. The AD converter 11 is provided for a plurality of channels, but only one channel is shown.

  The history memory 20 as a data storage unit stores waveform data from the measurement unit 10. A bookmark management database (hereinafter abbreviated as DB) 30 is an identification information storage unit and stores identification information. The bookmark management unit 40 includes a marking unit 41 and manages identification information stored in the DB 30. The marking unit 41 stores identification information for identifying desired waveform data among the waveform data stored in the history memory 20 in the identification information storage unit 30.

  The display processing unit 50 includes a search unit 51, an analysis unit 52, and a test selection unit 53, and is connected to the bookmark management unit 40 to read waveform data from the history memory 20 and perform waveform analysis. Further, the display processing unit 50 converts the waveform data and the analysis result into display data of a desired format and outputs it.

The search means 51 searches the waveform data in the history memory 20 for waveform data that meets the search conditions. The analysis unit 52 performs waveform analysis of the waveform data read from the history memory 20. The selection unit 53 selects waveform data to be read from the history memory 20 based on the identification information of the DB 30 managed by the bookmark management unit 40.

  The display unit 60 has a display screen Disp, and displays the display data output from the display processing unit 50 on the display screen Disp.

The operation of such an apparatus will be described.
FIG. 2 is a flowchart for explaining the operation of the present apparatus. FIG. 3 is a diagram showing an example of the waveform data D (1) to D (n) acquired by the present apparatus. Here, the same components as those in FIG.

  First, the user operates an operation unit (not shown) to instruct the start of measurement of the waveform under measurement. As a result, a preamplifier (not shown) attenuates and amplifies the waveform to be measured input to the measurement unit 10 to a desired amplitude level, and outputs it to the AD converter 12 and the trigger detection circuit 13. Then, the AD converter 11 changes a signal output from a preamplifier (not shown) into a digital signal and outputs it as waveform data to the history memory 20.

  On the other hand, when the trigger detection circuit 12 detects that a signal level from a preamplifier (not shown) satisfies a desired trigger condition, the trigger detection circuit 12 generates a trigger signal. The desired trigger condition is, for example, when the signal level changes from negative to positive, or when signals from a plurality of channels exceed a specific signal level.

  Then, the measurement unit 10 stores the waveform data from the AD converter 11 in the history memory 20 for each trigger signal with the trigger signal from the trigger detection circuit 12 as a reference. At this time, the AD converter 11 outputs the waveform data so that the waveform data for a desired time before and after the reference trigger signal can be stored in the history memory 20. Further, the measurement unit 10 adds an index for identifying a plurality of waveform data stored in the history memory 20, for example, a number indicating the stored order, for each waveform data D (1) to D (n). The acquired time, data length, sampling time of the AD converter 11 and the like are also included in the waveform data D (1) to D (n). (S20).

  Then, the user causes the display processing unit 50 to perform waveform display and waveform analysis via an operation unit (not shown). Here, the display processing unit 50 displays the waveform data D (1) to D (n) of the history memory 20 one by one on the display screen Disp, and the waveform data D (1) to be analyzed from the displayed waveform display. Since it is difficult to search for ~ D (n), the display processing unit 50 performs a history search under a desired search condition set by an operation unit (not shown) and narrows down the waveform data D (1) to D (n). I do. For example, the waveform data D (2), D (4), and D (9) are searched under the search condition A shown in FIG. 3 (S21).

  The waveform data D (2), D (4), and D (9) searched by the display processing unit 50 are sequentially displayed on the display screen Disp one by one in accordance with an instruction from an operation unit (not shown) operated by the user. . Further, the analysis means 52 of the display processing unit 50 analyzes the waveform data D (2), D (4), D (9) to be displayed, and the display processing unit 50 displays the analysis result (S22). .

  Further, the user bookmarks the waveform data being displayed (for example, waveform data D (4)) among the waveform data D (2), D (4), and D (9) displayed as waveforms on the display screen Disp. register. Bookmark registration is to mark a desired one of a plurality of items so that they can be distinguished from others. That is, when the user instructs the bookmark registration of the waveform data D (4) through the operation unit (not shown), the marking means 41 of the bookmark management unit 40 identifies for identifying the waveform data D (4) instructed from the operation unit. The information is registered in the DB 30 and the waveform data D (4) is marked. As a result, the waveform data D (4) is bookmarked. The identification information includes, for example, an index added to the waveform data, an address in the history memory 20 in which the waveform data is stored (S23).

  If the waveform display of all the searched waveform data D (2), D (4), D (9) is not completed, the waveform data data D (2), D (4) for which the waveform display has not been completed. , D (9) are displayed in a waveform, and bookmarks are registered as necessary (S24, S22 to S23).

  On the other hand, when the waveform display of all the searched waveform data (2), D (4), and D (9) is finished (S24) and a history search is performed under a different search condition, a new search condition, for example, A search is performed under the search condition B shown in FIG. 3, the waveform data D (3) and D (8) are narrowed down, waveform display and waveform analysis are performed, and necessary waveform data, for example, D (8) is bookmarked. (S25, S21 to S24).

  If the search is not performed under another search condition, an instruction to display the waveform data D (4) and D (8) registered as bookmarks is given from an operation unit (not shown), and the display processing unit 50 displays the bookmarked waveform data. (S25, S26) is changed to a mode for performing the waveform display (hereinafter referred to as a bookmark waveform display mode when selecting a bookmark registered one). Steps S20 to S25 are referred to as a history memory waveform display mode.

  The display processing unit 50 acquires identification information from the DB 30 via the bookmark management unit 40, and the selection means 51 of the display processing unit 50 uses the identification information to register the waveform data D (4) bookmarked from the history memory 20. , D (8) only is selected and read sequentially. For example, the waveform data D (4) is read, and the waveform data D (4) is displayed as a waveform (S27). Further, the waveform analysis means 52 of the display processing unit 50 performs waveform analysis of the waveform data D (4) and displays the analysis result on the display screen Disp of the display unit 60 (S28).

  If there is waveform data D (8) that has not been read out in the waveform data D (4) and D (8) registered as bookmarks, one waveform data D (8) is read out, and the waveform display and analysis results are read out. Is displayed (S29, S27 to S28). When all the waveform data D (4) and D (8) registered as bookmarks are read, the process is terminated (S29).

  As described above, the marking unit 41 selects the desired waveform data D (4), D (D) among the waveform data D (2) to D (4), D (8), D (9) searched by the search unit 51. 8) is registered in the DB 30 as a bookmark, and the selecting means 51 selects only the waveform data D (4) and D (8) registered in the history memory 20 from the history memory 20 and reads them from the history memory 20. The waveform data D (4) and D (8) can be efficiently displayed as a waveform, or the analysis result can be displayed by performing waveform analysis. Therefore, it is possible to separate the work of searching the waveform data D (4) and D (8) from the history memory 20 and the work of performing the waveform analysis of the waveform data D (4) and D (8). Display and waveform analysis can be concentrated.

  In particular, the waveform data D (1) to D (n) stored in the history memory 20 is obtained for each trigger signal, and the time data between the waveform data D (1) to D (n) is obtained. There is no continuity, and these waveform data D (1) to D (n) cannot be combined and displayed as one in time. Therefore, it is necessary to individually display waveforms and compare them. For example, as disclosed in Japanese Patent Application Laid-Open No. 2001-153892, different from registering bookmarks in a single continuous waveform data, among tens to thousands of waveform data D (1) to D (n). Since the desired waveform data D (4) and D (8) are registered as bookmarks, the desired waveform data D (4) and D (8) can be displayed efficiently, or the analysis result is displayed by performing waveform analysis. can do.

  The marking means 41 selects desired waveform data D (4), D (8) from the waveform data D (2) to D (4), D (8), D (9) searched by the searching means 51. Is registered as a bookmark, it is not necessary to search the waveform data D (4) and D (8) directly from the history memory 20, and the desired waveform data D (4) and D (8) can be searched efficiently.

  Further, the DB 30 stores the identification information of the waveform data D (4) and D (8) searched by the search conditions A and B which are different by the search means 51, so that only necessary waveform data can be managed centrally. . This eliminates the need for waveform display and waveform analysis after the user has performed a history search under the search conditions A and B, so that the desired waveform data D (4) and D (8) can be displayed efficiently. Analysis can be performed and the analysis result can be displayed.

In addition, this invention is not limited to this, The following may be sufficient.
In the apparatus shown in FIG. 1, the waveform data D (4) and D (8) are bookmarked from the waveform data D (2) to D (4), D (8) and D (9) searched by the search means 51. However, the search means 51 is not narrowed down by the history search, and the desired waveform data D (2), D (D) among the waveform data D (1) to D (n) of the entire history memory 20 is shown. 4) may be bookmarked.

  As described above, the marking unit 41 bookmarks the desired waveform data D (2) and D (4) among the many waveform data D (1) to D (n) in the history memory 20. In the bookmark waveform display mode in which the waveform data D (2) and D (4) are displayed again, the selection means 53 selects the waveform data D (2) and D (4) registered as bookmarks. The waveform data D (4) and D (8) can be efficiently displayed as a waveform, or the analysis result can be displayed by performing waveform analysis. Of course, not only the waveform data D (2) and D (4) but also the waveform data D (1) to D (n) may be registered as bookmarks.

  Further, in the apparatus shown in FIG. 1, the configuration is shown in which the waveform data being displayed on the display screen Disp of the display unit 60 is bookmarked, but the waveform data D (1 (1) of the history memory 20 is displayed on the display screen Disp of the display unit 60. ) To D (n) may be displayed as thumbnails (reduced within a range in which the waveform shape can be understood) or displayed in a list format, and waveform data to be bookmarked may be selected from the thumbnail display or list.

  For example, it is configured as shown in FIG. In FIG. 4, thumbnail display means 54 for displaying thumbnails and list display means 55 for displaying in a list format are newly provided in the display processing unit 50. Such an apparatus is substantially similar to the operation of the apparatus shown in FIG. First, the case of displaying thumbnails will be described. For example, the display processing unit 50 reads the waveform data D (1) to D (4), and the thumbnail display unit 54 reduces the waveform display of each of the waveform data D (1) to D (4), and displays the display screen Disp. A plurality of waveform data D (1) to D (4) are simultaneously displayed on the top. For example, the display is as shown in FIG. FIG. 5 is an example showing the front of the apparatus, in which four waveform data D (1) to D (4) are reduced and displayed simultaneously. Here, the same components as those in FIG.

  Then, from the waveform data D (1) to D (4) displayed on the display screen Disp, the user instructs the desired waveform data to be bookmarked via the operation unit, and the marking means 41 is instructed. Waveform data is registered in the DB 30 as a bookmark. Then, in the bookmark waveform display mode, the selection means 53 selects only the waveform data bookmarked with reference to the DB 30 from the waveform data D (1) to D (n) of the history memory 20, and the display screen Disp. Waveform display.

Next, the operation when displaying in a list format will be described.
The list display means 55 displays a list of waveform data information (eg, index, acquired time, etc.) in the history memory 20 on the display screen Disp. Then, the marking means 41 bookmarks the desired waveform data in the DB 30 from the waveform data displayed in a list. Then, in the bookmark waveform display mode, the selection means 53 selects only the waveform data bookmarked with reference to the DB 30 from the waveform data D (1) to D (n) of the history memory 20, and the display screen Disp. To display.

  In this way, since the marking means 41 bookmarks desired waveform data from the waveform data displayed as thumbnails or lists, the waveform is displayed one by one on the display screen Disp of the display unit 60, and bookmark registration is performed. There is no need to do. As a result, desired waveform data can be bookmarked efficiently. In addition, although the structure which provides both the thumbnail display means 54 and the list display means 55 was shown, any one may be sufficient.

  Moreover, in the apparatus shown in FIG. 1, the marking means 41 showed the structure which bookmark-registers desired waveform data among several waveform data D (1) -D (n), However, The analysis result is bookmark-registered. May be. That is, in waveform analysis, waveform analysis is often performed on a single waveform data using a plurality of analysis items. Therefore, many analysis results are displayed, and it may be difficult to see important analysis results. Therefore, the marking means 41 may register identification information for identifying a desired analysis result or a desired analysis item in the DB 30.

  For example, when measuring with a plurality of channels and analyzing and displaying the maximum value / minimum value of each channel as an analysis item, the marking means 41 bookmarks the maximum value / minimum value of the desired channel in the DB 30. Then, in the bookmark waveform display mode, the selection unit 53 refers to the analysis result (that is, the desired value) registered in the DB 30 with reference to the analysis result of the maximum value / minimum value of each channel analyzed by the analysis unit 52. Only the maximum / minimum value of the channel is selected and displayed on the display screen Disp.

  In addition, when a waveform to be measured with periodicity is measured and a plurality of periods are included in one waveform data, waveform analysis may be performed for each period. In such a case, the marking means 41 bookmarks the analysis result in a desired cycle. Then, in the bookmark waveform display mode, the selection unit 53 selects only the analysis result of the period registered as a bookmark with reference to the DB 30 from the analysis results analyzed by the analysis unit 52 and displays it on the display screen Disp.

  As described above, the marking unit 41 bookmarks a desired analysis result among the plurality of analysis results in the DB 30. And since the analysis result which the selection means 53 registered as bookmark among the analysis results analyzed by the analysis means 52 is selected and displayed, an important analysis result can be displayed efficiently. In such a case, the waveform data D (1) to D (n) may not be acquired with the trigger signal as a reference.

  Further, in the apparatus shown in FIG. 1, a file storage unit is provided to convert the waveform data D (1) to D (n) into a file format in order to store the waveform data D (1) to D (n) for a long time. The file may be stored in a file storage unit. And the marking means 41 may register the identification information for identifying a desired file among files preserve | saved at a file preservation | save part in DB30. Then, in the bookmark waveform display mode, the selection unit 53 may select only a file registered as a bookmark with reference to the DB 30 from among a plurality of files stored in the file storage unit, and read the waveform data.

  As described above, the marking unit 41 bookmarks a desired file in the DB 30 among many files in the file storage unit. Then, the selection means 53 selects the bookmark registered file and displays the waveform and analysis result. Therefore, the desired waveform data can be displayed efficiently and the analysis result can be displayed by performing waveform analysis. it can.

  In addition, the operability of the apparatus shown in FIG. 1 has become difficult with the recent advancement of measurement and analysis. Therefore, a help screen is often displayed on the display screen Disp of the display unit 60. The help screen is a screen for explaining the operation of the apparatus main body. A plurality of such help screens are stored in the help screen storage unit, and the display processing unit 50 reads out the instructed help screen and displays it on the display screen Disp by an operation from an operation unit (not shown). However, there are tens to thousands of help screens, and there is a problem that it is difficult for the user to display a desired help screen. Therefore, the marking means 41 may register identification information for identifying a desired help screen among the help screens stored in the help screen storage unit in the DB 30. And the selection means 53 is good to select only the help screen registered as a bookmark with reference to DB30 among the several help screens memorize | stored in a help screen memory | storage part, and to display on the display screen Disp.

  As described above, the marking unit 41 bookmarks a desired help screen among the plurality of help screens in the DB 30. And since the selection means 53 selects and displays the help screen which carried out bookmark registration from the help screen memory | storage part, the help screen which a user requires can be displayed efficiently.

  In addition to the embodiment described above, the present invention can be applied to the apparatus shown in FIG. 1 that efficiently selects a desired one from among a plurality of apparatuses.

It is the block diagram which showed one Example of this invention. It is a flowchart explaining operation | movement of the apparatus shown in FIG. It is the figure which showed an example of waveform data D (1) -D (n). It is the block diagram which showed the other Example of this invention. It is the figure explaining the structure of the front which shows an example of the waveform measuring apparatus shown in FIG. It is the figure which showed an example of waveform data D (1) -D (n). It is the figure explaining the structure of the front which shows an example of the conventional waveform measuring apparatus. It is a flowchart explaining operation | movement of the conventional waveform measuring apparatus.

Explanation of symbols

20 History memory (data storage unit)
30 Bookmark management database (identification information storage unit)
41 Marking means 51 Search means 52 Analysis means 53 Selection means 54 Thumbnail display means 55 List display main dark

Claims (9)

In a waveform measuring apparatus for storing a plurality of waveform data obtained by measuring a measured waveform with reference to a trigger signal in a data storage unit, and displaying the waveform data of the data storage unit on a display unit,
An identification information storage unit for storing identification information;
Marking means for storing identification information for identifying desired waveform data in the waveform data of the data storage unit in the identification information storage unit,
A waveform measuring apparatus comprising: selection means for selecting waveform data in the data storage unit based on identification information in the identification information storage unit. Search means for searching for waveform data that meets a search condition from the waveform data in the storage unit,
2. The waveform measuring apparatus according to claim 1, wherein the marking unit stores identification information for identifying desired waveform data among the waveform data searched by the search unit in the identification information storage unit.   3. The waveform measuring apparatus according to claim 2, wherein the identification information storage unit stores identification information relating to each waveform data searched by the search means under different search conditions. The display unit is provided with thumbnail display means for reducing the waveform display of the waveform data in the data storage unit and performing waveform display of a plurality of waveform data,
4. The marking means stores identification information for identifying desired waveform data among the waveform data displayed by the thumbnail display means in the identification information storage unit. The waveform measuring device according to claim 1. Providing a list display means for displaying the waveform data information of the data storage unit on the display unit in a list format;
The marking means stores identification information for identifying desired waveform data among the waveform data displayed by the list display means in the identification information storage unit. The waveform measuring device described in 1. Waveform measurement that stores the waveform data of the measured waveform in the data storage unit, displays the waveform data of the data storage unit on the display unit, and displays the analysis result obtained by analyzing the waveform data displayed on the waveform In the device
An identification information storage unit for storing identification information;
Among the analysis results of the waveform data, marking means for storing identification information for identifying a desired analysis result in the identification information storage unit,
A waveform measuring apparatus comprising: selection means for selecting the analysis result based on identification information in the identification information storage unit. A file storage unit for storing the waveform data in a file format;
The marking means stores identification information for identifying a desired file among the files stored in the file storage unit in the identification information storage unit,
The waveform measuring apparatus according to claim 1, wherein the selection unit selects a file in the file storage unit based on identification information in the identification information storage unit. A help screen storage unit having a plurality of help screens displayed on the display unit for explaining the operation of the apparatus main body;
The marking means stores identification information for identifying a desired help screen among the help screens of the help screen storage unit in the identification information storage unit,
The waveform measuring apparatus according to claim 1, wherein the selection unit selects a help screen of the help screen storage unit based on identification information of the identification information storage unit. In a waveform measurement method for storing a plurality of waveform data measured with reference to a trigger signal in a data storage unit, and displaying the waveform data of the data storage unit on a display unit,
Of the plurality of waveform data in the data storage unit, marking the desired waveform data,
And a step of selecting the marked waveform data and displaying the waveform on the display unit.

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