JP5025956B2 - Display control device - Google Patents

Description

  The present invention relates to a display control apparatus configured to be able to display a signal waveform diagram based on input signal data indicating an input signal and a characteristic diagram indicating the characteristics of the input signal on a display unit.

  As this type of display control apparatus, an FFT (Fast Fourier Transform) analyzer disclosed by the applicant in Japanese Patent Laid-Open No. 7-43403 is known. This FFT analyzer includes an A / D converter that converts an input signal (analog signal) into digital data (digital signal: input signal data), a RAM that stores digital data, a ROM in which a program is written, and digital data according to the program. The CPU is configured to include an FFT calculation process, a display (display unit) that displays a spectrum diagram showing a spectrum based on data obtained by the FFT calculation process, and the like.

In this case, in a display control apparatus that displays a characteristic diagram such as a spectrum diagram (a diagram showing the characteristics of the input signal) based on the calculation result as in the FFT analyzer disclosed by the applicant, input signal data for 1000 ms, for example. A signal waveform diagram based on (the above-mentioned digital data) is displayed on the display unit, and input signal data to be subjected to FFT calculation processing is specified from the input signal data for 1000 ms (the processing target range is specified). In other words, a configuration is employed in which arithmetic processing is performed on designated input signal data. Specifically, as an example, input signal data for a preset time (for example, 200 ms) from the time corresponding to the position of the cursor displayed superimposed on the signal waveform diagram is designated as the target of the arithmetic processing, An FFT operation process for the designated input signal data is executed. Thus, for example, when the calculation process is completed, a spectrum diagram (characteristic diagram) based on the calculation result is displayed on the display unit instead of the signal waveform diagram based on the input signal data for 1000 ms.
Japanese Patent Laid-Open No. 7-43403 (2nd page, Fig. 1-2)

  However, the display control device including the FFT analyzer has the following problems to be improved. That is, in this type of display control device, the processing target range is specified by moving the cursor for specifying the processing target range of the arithmetic processing on the signal waveform diagram, and the arithmetic processing for the specified processing target range is performed. A configuration is adopted in which a characteristic diagram of an input signal such as a spectrum diagram is displayed instead of the signal waveform diagram at the time when the signal is completed. Therefore, when the calculation process is executed by designating another new processing target range in the state where the characteristic diagram is displayed, the new processing target range is used instead of the characteristic diagram displayed on the display unit. For example, it is necessary to display a signal waveform diagram based on input signal data for 1000 ms including For this reason, this type of display control device requires a switching operation between a display screen for displaying a characteristic diagram based on the calculation result and a display screen for displaying a signal waveform diagram for designating a processing target range of the calculation processing. The operation for specifying a new processing target range is complicated by the amount, and improvement of this point is desired.

  The present invention has been made in view of such a problem to be improved, and a main object of the present invention is to provide a display control device that can easily specify a processing target range without performing a display screen switching operation.

In order to achieve the above object, a display control device according to claim 1 is configured to execute a predetermined arithmetic processing on input signal data indicating an input signal and output processing data, and to control the arithmetic unit. A display comprising: a control unit that causes the display unit to display a signal waveform diagram of the input signal based on the input signal data and a characteristic diagram indicating the characteristics of the input signal based on the processing data while executing the predetermined arithmetic processing In the control device, the control unit is configured to perform calculation processing from the characteristic diagram and a processing target range of the predetermined calculation processing of the input signal data for a predetermined time (from the input signal data for a predetermined time). The signal waveform diagram of the input signal based on the input signal data for the first time including the range of the input signal data designated as the target) is displayed side by side in the same screen, and Predetermined arithmetic processing Ru display the complete range display indicating a processing completion range has been completed in relation to the signal waveform diagram based on the first time of the input signal data.

Also, the display control device according to claim 2, in the display control device according to claim 1 Symbol placement, the control unit is to execute the predetermined processing to the arithmetic unit sequentially changes the processing target range At the same time, the characteristic diagram is sequentially displayed on the basis of the processing data output from the calculation unit.

Further, the display control device according to claim 3, wherein, in the display control device according to claim 1 or 2, wherein the control unit, and the characteristic diagram, the signal waveform diagram based on the first time of the input signal data And the second signal waveform diagram as the signal waveform diagram based on the input signal data corresponding to the processing target range are displayed side by side in the same screen, and the first The second signal waveform diagram is enlarged and displayed in the time axis direction rather than the signal waveform diagram.

Furthermore, the display control device according to claim 4 is the display control device according to any one of claims 1 to 3 , wherein the control unit indicates a relative time range of the first time with respect to the predetermined time. The first display is displayed.

Further, the display control device according to claim 5 is the display control device according to claim 4 , wherein the control unit includes the first display in a scroll bar having a length corresponding to the predetermined time as the first display . corresponding to the time Ru to display the length of the scroll box.

According to the display control apparatus 請 Motomeko 1, wherein the characteristic diagram and a first time of the input signal data to based on an input signal including a process target range of a predetermined arithmetic processing of the input signal data of a predetermined time period By arranging and displaying the signal waveform diagram in the same screen, when specifying the new processing target range and executing the predetermined calculation processing in the state where the characteristic diagram is displayed, without switching the display screen, A signal waveform having a length of time including a new processing target range can be displayed as a signal waveform diagram, and a new processing target range can be immediately designated. Therefore, it is possible to easily specify the processing target range even for an operator who is not familiar with the operation of this type of apparatus. In addition, by displaying a completed range display indicating a process completion range in which a predetermined calculation process is completed in association with a signal waveform diagram based on input signal data for the first time, a range in which the calculation process has already been completed is displayed. without incurring a situation that specifies the new process target range comprise, Ru can be specified accurately new process target range.

Also, according to the display control device according to claim 2, the control unit, causes to execute a predetermined arithmetic processing sequentially changes to the calculation unit the process target range, based on the processing data output from the arithmetic unit By sequentially changing the display of the characteristic diagram, it is possible to easily execute a plurality of arithmetic processes for a large amount of input signal data without performing a complicated operation of specifying the processing target range many times. .

Further, according to the display control device of claim 3 , the characteristic diagram, the first signal waveform diagram as the signal waveform diagram based on the input signal data for the first time, and the input signal corresponding to the processing target range The second signal waveform diagram as the signal waveform diagram based on the data is displayed side by side in the same screen, and the second signal waveform diagram is enlarged and displayed in the time axis direction as compared with the first signal waveform diagram. Thus, it is possible to easily recognize whether the processing target range is accurately designated by referring to the displayed second signal waveform diagram. Therefore, it is possible to avoid a situation in which a predetermined calculation process is executed in a state where an unintended range is designated as the processing target range.

Furthermore, according to the display control apparatus of claim 4 , any one of the input signal data for a predetermined time is displayed by displaying the first display indicating the relative time range of the first time with respect to the predetermined time. It is possible to intuitively recognize whether the signal waveform diagram is displayed based on the input signal data at the point of time.

According to the display control device of claim 5, as a first display , by displaying a scroll box having a length corresponding to the first time in a scroll bar having a length corresponding to the predetermined time, simply by sliding the scroll box within the scroll bar, Ru can be easily displayed to a signal waveform diagram based on the input signal data of a desired point in time of the input signal data of a predetermined time period.

  Hereinafter, the best mode of a display control device according to the present invention will be described with reference to the accompanying drawings.

  First, the configuration of the waveform display device 1 will be described with reference to the drawings.

  A waveform display device 1 shown in FIG. 1 is an example of a display device in which a display control device according to the present invention and a display unit according to the present invention are integrated, and is a signal of an input signal Si (for example, a voltage signal). A signal waveform diagram showing the waveform and a characteristic diagram showing the characteristics of the input signal Si can be displayed. Specifically, the waveform display device 1 includes an input signal processing unit 11, a storage memory 12, a storage unit 13, a calculation unit 14, a display unit 15, an operation unit 16, and a control unit 17.

  The input signal processing unit 11 includes an A / D converter, and samples a parameter value (for example, a voltage value) for the input signal Si at a predetermined period according to the control of the control unit 17. Sampling data Ds corresponding to the signal data is output. The storage memory 12 stores sampling data Ds output from the input signal processing unit 11 and transferred by the control unit 17, and processing data Dp output from the calculation unit 14. The storage unit 13 stores calculation data Do used for calculation processing executed by the calculation unit 14, an operation program of the control unit 17, and the like. Under the control of the control unit 17, the calculation unit 14 uses the calculation data Do stored in the storage unit 13 and performs predetermined processing such as FFT calculation processing on the sampling data Ds stored in the storage memory 12. The processing data Dp is output by executing the above arithmetic processing.

  As shown in FIG. 2, the display unit 15 includes an LCD panel arranged on the front panel of the main body unit 2 in the waveform display device 1, and display data Dd output from the control unit 17 (see FIG. 1). Various images (display screen) based on the are displayed. The operation unit 16 includes various switches and dials, and is disposed on the front panel of the main body unit 2. The operation unit 16 outputs an operation signal So (see FIG. 1) when a switch or dial is operated.

  The control unit 17 executes various processes according to the operation signal So output from the operation unit 16. In this case, the control unit 17 controls the input signal processing unit 11 to output the sampling data Ds, and stores the sampling data Ds in the storage memory 12. The control unit 17 also controls the calculation unit 14 to execute various calculation processes on the sampling data Ds, and stores the processing data Dp output from the calculation unit 14 by the calculation process in the storage memory 12. Further, the control unit 17 generates display data Dd based on the sampling data Ds and the processing data Dp and outputs the display data Dd to the display unit 15, whereby signal waveform diagrams Pw1 and Pw2 indicating the signal waveform of the input signal Si and the input signal A characteristic diagram Pc (see FIG. 4) indicating the characteristics of Si is displayed on the display unit 15.

  Next, the overall operation of the waveform display device 1 when displaying the characteristic diagram Pc and the like of the input signal Si will be described.

  First, recording of the input signal Si (for example, voltage signal) is started by operating the switch of the operation unit 16. At this time, the control unit 17 controls the input signal processing unit 11 according to the operation signal So output from the operation unit 16 to output the sampling data Ds for the input signal Si. The control unit 17 stores (records) the sampling data Ds output from the input signal processing unit 11 in the storage memory 12. Thereby, sampling data Ds for a predetermined time is stored in the storage memory 12. Next, when displaying the characteristic diagram Pc (see FIG. 4) of the input signal Si based on the stored sampling data Ds, the control unit 17 first causes the display unit 15 to display the display screen P shown in FIG. . On this display screen P, signal waveform diagrams Pw1, Pw2, a scroll bar 23, a scroll box 24, a marker 25, and the like are displayed, and a cursor display 21 is displayed over the signal waveform diagram Pw1.

  In this case, the signal waveform diagram Pw1 corresponds to the first signal waveform diagram in the present invention. For example, 1000 ms (a first time in the present invention) of the sampling data Ds for a predetermined time stored in the storage memory 12. Example) based on the sampling data Ds of the minute, the value of the parameter for the input signal Si (for example, the input signal Si) on the orthogonal coordinates with the horizontal axis (X axis) as time and the vertical axis (Y axis) as amplitude. (Voltage value) is plotted and displayed. In this waveform display device 1, for how much time the signal waveform diagram Pw1 is to be displayed on the display screen P (how much the first time in the present invention is to be set) It is configured so that the screen can be changed as appropriate in a state where the screen is displayed on the display unit 15. In this case, the designation method of the first time in the present invention is not limited to the designation method of “1000 ms” as in the above example, but by designating the number of points of the sampling data Ds, the result is 1000 ms. A method for designating the sampling data Ds can be employed.

  Further, the signal waveform diagram Pw2 corresponds to the second signal waveform diagram in the present invention, and the FFT calculation processing described later from among sampling data Ds for 1000 ms corresponding to the signal waveform diagram Pw1 displayed on the display screen P. Similar to the above-described signal waveform diagram Pw1 based on, for example, 200 ms worth of sampling data Ds (an example of input signal data corresponding to the processing target range in the present invention) designated as a target (hereinafter also referred to as “calculation processing”) Thus, the parameter values for the input signal Si are plotted and displayed on the orthogonal coordinates. The signal waveform diagram Pw2 shown in the figure is displayed based on the sampling data Ds obtained by multiplying the sampling data Ds for 200 ms read from the storage memory 12 by a predetermined window function. Hereinafter, in order to facilitate understanding of the present invention, description of the window function is omitted.

  Further, in this waveform display device 1, how much sampling data Ds is to be subjected to arithmetic processing, that is, how much time the signal waveform diagram Pw2 is to be displayed on the display screen P (the present invention). (How long is the time length of the processing target range in FIG. 2), the operation condition setting screen (not shown) can be appropriately changed in a state where the display unit 15 is displayed. In this case, regarding the designation method related to the time length of the processing target range in the present invention, not only the designation method “200 ms” as in the above example, but also by designating the number of points of the sampling data Ds, as a result A method of designating sampling data Ds for 200 ms can be employed.

  Further, the cursor display 21 is a display for designating sampling data Ds to be subject to arithmetic processing from the sampling data Ds for a predetermined time stored in the storage memory 12 (designating a processing target range). As a whole, it is displayed in a rectangular shape and is associated with the signal waveform diagram Pw1 by being superimposed on the signal waveform diagram Pw1. In this case, in the cursor display 21, the left bar 21a indicates the start point of the processing target range, and the right bar 21b indicates the end point of the processing target range. Further, the length L1 of the cursor display 21 is automatically defined by the control unit 17 in accordance with how much sampling data Ds for the time is set as the processing target range (200 ms in this example).

The scroll bar 23 and the scroll box 24 correspond to the first display in the present invention. In this case, the scroll box 24 is a signal waveform diagram Pw1 displayed on the display screen P when the data amount (time) of the sampling data Ds stored in the storage memory 12 is the length L3 of the scroll bar 23. The length L4 is automatically defined by the control unit 17 in accordance with the data amount (time) of the sampling data Ds corresponding to. Further, the scroll box 24 depends on whether the signal waveform diagram Pw1 based on the sampling data Ds at a certain time point among the sampling data Ds for a predetermined time stored in the storage memory 12 is displayed on the display screen P. The display position in the scroll bar 23 is automatically defined by the control unit 17. Therefore, based on the display position of the scroll box 24 in the scroll bar 23 and the length L4 of the scroll box 24 with respect to the length L3 of the scroll bar 23, the time corresponding to all the sampling data Ds in the storage memory 12 (this book It is possible to visually recognize the relative time range of the waveform display range (the range in which the signal waveform diagram Pw1 is displayed on the display screen P) with respect to the predetermined time in the invention.

Marker 25, when the data amount of the sampling data Ds stored in the storage memory 12 (time) and the length L3 of the scroll bar 23, view range of the signal waveform that is specified by the cursor display 21 Pw1 ( That is, the length L5 is automatically defined by the control unit 17 in accordance with the data amount (time) of the sampling data Ds corresponding to the signal waveform diagram Pw2). Further, the marker 25 depends on which sampling data Ds of the sampling data Ds corresponding to the signal waveform diagram Pw1 displayed on the display screen P is designated (selected) by the cursor display 21. The display position in the scroll bar 23 is automatically defined by the control unit 17. Therefore, based on the display position of the marker 25 in the scroll bar 23 and the length L5 of the marker 25 with respect to the length L3 of the scroll bar 23, the time corresponding to all the sampling data Ds in the storage memory 12 (in the present invention). It is possible to visually recognize a relative time range of a processing target range (a range specified as an arithmetic processing target described later) with respect to a predetermined time.

  Next, by operating the switch of the operation unit 16, the signal waveform diagram Pw1 including the signal waveform corresponding to the processing target range specified as the calculation processing target is displayed on the display screen P in the signal waveform diagram Pw1. Scroll the signal waveform left or right. At this time, the scroll box 24 slides leftward or rightward in the scroll bar 23 in conjunction with the scrolling of the signal waveform. In this case, in the waveform display device 1, the signal waveform is displayed in the signal waveform diagram Pw1 by sliding the scroll box 24 with respect to the scroll bar 23 by operating a cursor switch (not shown) or the like of the operation unit 16. It is configured so that it can be scrolled.

  Subsequently, the switch of the operation unit 16 is operated so that the signal waveform corresponding to the sampling data Ds to be specified as the target of the calculation process is surrounded by the cursor display 21, and the cursor display 21 is moved in the left direction or in the signal waveform diagram Pw1. Slide to the right. Specifically, by operating the switch while referring to the cursor display 21 displayed superimposed on the signal waveform diagram Pw1, the bar 21a is superimposed on the portion corresponding to the start point in the processing target range in the signal waveform, and the signal waveform is displayed. , The cursor display 21 is slid so that the portion corresponding to the processing target range is sandwiched between the bars 21a and 21b. At this time, the signal waveform diagram Pw2 is sequentially displayed on the basis of the sampling data Ds corresponding to the signal waveform in the range surrounded by the cursor display 21 (the range between the bars 21a and 21b). In this case, the waveform display device 1 employs a configuration in which a signal waveform within a range surrounded by the cursor display 21 is displayed as a signal waveform diagram Pw2 in an enlarged manner in the time axis direction. Therefore, by referring to the signal waveform diagram Pw2 that is displayed in response to the slide of the cursor display 21, it is possible to specify the processing target range while confirming whether the desired range is accurately specified by the cursor display 21. It is possible.

  Subsequently, when the start of calculation processing is instructed, the control unit 17 controls the calculation unit 14 according to the operation signal So, and reads the sampling data Ds and the calculation data Do from the storage memory 12 and the storage unit 13. At the same time, calculation processing is performed on the sampling data Ds using the calculation data Do. Specifically, the control unit 17 controls the calculation unit 14 and is surrounded by the cursor display 21 in the signal waveform diagram Pw1 from the sampling data Ds for a predetermined time stored in the storage memory 12. Sampling data Ds corresponding to a time (in this example, 200 ms) corresponding to a signal waveform within a certain range (signal waveform sandwiched between bars 21a and 21b: that is, signal waveform diagram Pw2) is set as a processing target range. The corresponding sampling data Ds is read from the storage memory 12 and the calculation data Do is read from the storage unit 13. Subsequently, the control part 17 controls the calculating part 14, and performs the FFT calculating process which is an example of the predetermined calculating process in this invention. In response to this, the processing data Dp is output from the calculation unit 14.

  Subsequently, the control unit 17 displays the characteristic diagram Pc on the display screen P as shown in FIG. 4 based on the output processing data Dp. In this case, the characteristic diagram Pc is a linear spectrum diagram which is an example of the characteristic diagram in the present invention, and the input signal is on an orthogonal coordinate having the horizontal axis (X axis) as the frequency and the vertical axis (Y axis) as the amplitude. Parameter values for Si (for example, voltage values at each frequency of the input signal Si) are plotted and displayed. Further, the control unit 17 displays the markers 22 and 26 on the display screen P together with the display of the signal waveform diagram Pw2. In this case, the marker 22 corresponds to the completion range display in the present invention, and indicates the processing completion range in which the calculation processing by the calculation unit 14 is completed in association with the signal waveform diagram Pw1. In the figure, the marker 22 is displayed on the left side of the cursor display 21. However, when the calculation process is completed (when the characteristic diagram Pc is displayed), the marker 22 and the cursor are displayed. The display 21 is displayed so as to overlap the display screen P in the vertical direction.

Also, marker 26, when the data amount of the sampling data Ds stored in the storage memory 12 (time) and the length L3 of the scroll bar 23, in the characteristic diagram Pc displayed on the display screen P The length L6 is automatically defined by the control unit 17 in accordance with the data amount (time) of the corresponding sampling data Ds. In addition, the marker 26 depends on which sampling data Ds of the sampling data Ds corresponding to the signal waveform diagram Pw1 displayed on the display screen P is processed and the characteristic diagram Pc is displayed. The display position in the scroll bar 23 is automatically defined by the control unit 17.

  Therefore, based on the display position of the marker 26 in the scroll bar 23 and the length L6 of the marker 26 with respect to the length L3 of the scroll bar 23, the time corresponding to all the sampling data Ds in the storage memory 12 (in the present invention). It is possible to visually recognize the relative time range of the processing completion range (display range of the characteristic diagram Pc) with respect to (predetermined time). In the figure, the marker 26 is displayed on the left side of the marker 25. However, when the calculation process is completed (when the characteristic diagram Pc is displayed), the markers 25 and 26 are displayed. The scroll bar 23 is displayed so as to overlap in the vertical direction. As described above, the calculation process for the sampling data Ds (sampling data Ds corresponding to the processing target range) specified from the sampling data Ds for a predetermined time stored in the storage memory 12, and the characteristic diagram Pc based on the calculation result Is complete.

  On the other hand, when a calculation process is executed by specifying a range that is different from the processing target range, the cursor display 21 is set so that the signal waveform corresponding to the processing target range to be newly specified is surrounded by the cursor display 21. Is slid leftward or rightward in the signal waveform diagram Pw1. At this time, in the waveform display device 1, the characteristic diagram Pc and the signal waveform diagram Pw1 for designating the processing target range are displayed side by side in the same display screen P. Therefore, it is possible to immediately start an operation (an operation to slide the cursor display 21) for designating a new processing target range without switching the display screen P in a state where the characteristic diagram Pc is displayed. In the waveform display device 1, the marker 22 is displayed on the display screen P corresponding to the sampling data Ds for which the arithmetic processing has already been completed. Therefore, it is possible to avoid a situation in which a new processing target range is specified including the range in which the arithmetic processing is completed (the same sampling data Ds is specified in duplicate).

  Subsequently, when the start of calculation processing is instructed, the control unit 17 controls the calculation unit 14 to read out the sampling data Ds corresponding to the newly specified processing target range from the storage memory 12 and perform calculation. The data Do is read from the storage unit 13 and the calculation process is executed. As a result, new processing data Dp is output from the calculation unit 14, and the control unit 17 displays a new characteristic diagram Pc on the display screen P based on the output processing data Dp.

  In addition, the waveform display device 1 has an automatic calculation processing function for executing calculation processing by continuously and automatically specifying new processing target ranges starting from the processing target range specified by the cursor display 21. . Specifically, for example, when the calculation processing by the automatic calculation processing function is started in a state where the cursor display 21 is displayed at the position shown in FIG. 4, the control unit 17 controls the calculation unit 14 to Sampling data Ds for a time corresponding to a signal waveform (a signal waveform sandwiched between bars 21a and 21b) within a range surrounded by the cursor display 21 in the waveform diagram Pw1 (in this example, 200 ms). Is read from the storage memory 12 as sampling data Ds corresponding to the processing target range, and the arithmetic processing is executed. Thereby, the characteristic diagram Pc for the first processing target range is displayed on the display screen P based on the processing data Dp output from the calculation unit 14.

  Next, the control unit 17 designates a new processing target range for 200 ms with the display position of the bar 21b of the cursor display 21 shown in FIG. 4 as a processing start point, and causes the calculation unit 14 to execute calculation processing. In response to this, the calculation unit 14 executes a calculation process for the newly specified process target range and outputs new process data Dp. Thereby, based on the new process data Dp output from the calculating part 14, the characteristic diagram Pc about the new process target range temporally continuous with respect to the first process target range is displayed on the display screen P ( The characteristic diagram Pc is changed to correspond to the new processing target range). Thereafter, when the control unit 17 is instructed to stop the automatic calculation process by the operation of the operation unit 16 or until the calculation process for all the sampling data Ds in the storage memory 12 is completed, the control unit 17 completes 200 ms. The sampling data Ds is designated as the next new processing target range, and the calculation unit 14 is caused to execute calculation processing. Thereby, the characteristic diagram Pc is sequentially displayed on the display screen P based on the new processing data Dp output from the calculation unit 14.

  As described above, according to the waveform display device 1, the characteristic diagram Pc and the first processing range including the processing target range of the arithmetic processing among all the sampling data Ds (input signal data for a predetermined time) in the storage memory 12 are included. The signal waveform diagram Pw1 of the input signal Si based on the sampling data Ds for the time (in this example, 1000 ms) is displayed side by side in the same display screen P, so that a new characteristic diagram Pc is displayed. When a processing range is specified and a calculation process is executed, a signal waveform diagram Pw1 having a time length including a new processing target range is displayed without switching the display screen P, and the displayed signal waveform diagram Pw1 is displayed. Simply changing the display position of the cursor display 21 (position where the cursor display 21 is superimposed on the signal waveform: slide position of the cursor display 21) It is possible to immediately specify the scope. Therefore, it is possible to easily specify the processing target range even for an operator who is not familiar with the operation of this type of apparatus.

  Further, according to the waveform display device 1, the control unit 17 sequentially changes the processing target range to cause the calculation unit 14 to execute the calculation process, and the characteristic diagram based on the processing data Dp output from the calculation unit 14. By sequentially changing the display of Pc, it is possible to easily execute a plurality of arithmetic processes for a large amount of sampling data Ds without performing a complicated operation of designating a processing target range many times.

  Furthermore, according to this waveform display device 1, the characteristic diagram Pc, the signal waveform diagram Pw1 based on the sampling data Ds for the first time (in this example, 200 ms), and the sampling data Ds corresponding to the processing target range. The signal waveform diagram Pw2 based on the signal waveform diagram Pw2 is displayed side by side in the same display screen P, and the signal waveform diagram Pw2 is enlarged and displayed in the time axis direction rather than the signal waveform diagram Pw1, thereby displaying the signal waveform diagram Pw2 displayed. By referring to, it can be easily recognized whether the processing target range is accurately specified. Therefore, it is possible to avoid a situation in which arithmetic processing is executed in a state where an unintended range is designated as the processing target range.

  Further, according to the waveform display device 1, the marker 22 (completion range display) indicating the processing completion range where the arithmetic processing has been completed is displayed in association with the signal waveform diagram Pw1 based on the sampling data Ds for the first time. Thus, it is possible to accurately specify a new processing target range without causing a situation in which a new processing target range is specified including a range in which arithmetic processing has already been completed.

Furthermore, according to the waveform display device 1, a predetermined time (time corresponding to all sampling data Ds in the storage memory 12) of the first time (the waveform display range in which the signal waveform diagram Pw1 is displayed) in the present invention. By displaying a scroll bar 23 and a scroll box 24 ( first display ) indicating a relative time range with respect to the sampling data Ds for a predetermined time stored in the storage memory 12. Whether the signal waveform diagram Pw1 is displayed on the display screen P can be intuitively recognized based on the data Ds.

Further, according to the waveform display device 1, as the first display in the present invention, the scroll having the length corresponding to the first time in the present invention is entered in the scroll bar 23 having the length corresponding to the predetermined time in the present invention. By displaying the box 24, a signal based on the sampling data Ds at a desired time out of the sampling data Ds for a predetermined time stored in the storage memory 12 simply by sliding the scroll box 24 in the scroll bar 23. The waveform diagram Pw1 can be easily displayed.

Further, according to the waveform display device 1, the scroll bar 23 and the marker 25 indicating the relative time range with respect to the predetermined time of the processing target range (the time corresponding to all the sampling data Ds in the storage memory 12) are displayed. By doing so, it is possible to intuitively recognize which sampling data Ds at a certain time point of the sampling data Ds for a predetermined time stored in the storage memory 12 is designated as the processing target range.

Further, according to the waveform display device 1, the scroll bar 23 and the marker 26 indicating the relative time range with respect to the predetermined time (the time corresponding to all the sampling data Ds in the storage memory 12) in the processing completion range are displayed. As a result, the calculation processing for the sampling data Ds at any point in the sampling data Ds for a predetermined time stored in the storage memory 12 is completed (characteristic diagram regarding the sampling data Ds at any point) It is possible to intuitively recognize whether Pc is displayed.

In addition, this invention is not limited to said structure. For example, although an example of displaying a Linear Spectrum view of a characteristic diagram Pc, in the characteristic diagram of the present invention, a power spectrum diagram, Nichols, various characteristic diagram of such Bode diagram and Kokuado diagram is included. In this case, the predetermined calculation process executed by the calculation unit 14 is not limited to the FFT calculation process, and various calculation processes for outputting the processing data Dp necessary for displaying the various characteristic diagrams described above are included. included. Further, the example in which the rectangular cursor display 21 is displayed so as to overlap the signal waveform diagram Pw1 has been described above, but it is also possible to employ a configuration in which only the bars 21a and 21b in the cursor display 21 are displayed as the start point and the end point. In addition, the waveform display device 1 in which the display control device and the display unit according to the present invention are integrally formed has been described. However, the signal waveform diagrams Pw1 and Pw2 and characteristics described above are added to the display device (display unit) as an external device. The present invention can be applied to various display control devices configured to be able to display FIG. Pc and the like.

2 is a block diagram showing a configuration of a waveform display device 1. FIG. 1 is a front view of a waveform display device 1. FIG. FIG. 6 is a display screen diagram in a state where signal waveform diagrams Pw1 and Pw2 are displayed side by side on a display screen P. FIG. 4 is a display screen diagram in a state where signal waveform diagrams Pw1 and Pw2 and a characteristic diagram Pc are displayed side by side on a display screen P.

DESCRIPTION OF SYMBOLS 1 Waveform display apparatus 14 Calculation part 15 Display part 17 Control part 22,25,26 Marker 23 Scroll bar 24 Scroll box Dd Display data Do Calculation data Dp Processing data Ds Sampling data L1-L6 Length P Display screen Pc Characteristic figure Pw1 , Pw2 signal waveform diagram Si input signal

Claims (5)

An arithmetic unit that executes predetermined arithmetic processing on input signal data indicating an input signal and outputs processing data, and controls the arithmetic unit to execute the predetermined arithmetic processing and the input signal data based on the input signal data A display control device comprising: a control unit that displays a signal waveform diagram of an input signal and a characteristic diagram indicating characteristics of the input signal based on the processing data on a display unit;
The control unit includes the signal of the input signal based on the characteristic diagram and the input signal data for a first time including a processing target range of the predetermined arithmetic processing among the input signal data for a predetermined time. A waveform diagram is displayed side by side on the same screen, and a completion range display indicating a processing completion range in which the predetermined calculation processing is completed is displayed in association with the signal waveform diagram based on the input signal data for the first time. Display control device to let you. The control unit sequentially changes the processing target range to cause the calculation unit to execute the predetermined calculation process, and sequentially changes the display of the characteristic diagram based on the processing data output from the calculation unit. claim 1 Symbol placement of the display control device. The control unit includes the characteristic diagram, a first signal waveform diagram as the signal waveform diagram based on the input signal data for the first time, and the input signal data corresponding to the processing target range. A second signal waveform diagram as a signal waveform diagram is displayed side by side in the same screen, and the second signal waveform diagram is enlarged and displayed in the time axis direction as compared with the first signal waveform diagram. 3. The display control apparatus according to 1 or 2 . Wherein the control unit, the display control device according to claim 1 for displaying a first display indicating a relative time range 3 with respect to the predetermined time of the first time. The display control apparatus according to claim 4 , wherein the control unit displays, as the first display , a scroll box having a length corresponding to the first time in a scroll bar having a length corresponding to the predetermined time.

Images