JP2020041863A - Device, system, and method for displaying digital waveform and program - Google Patents

Abstract

To provide a digital waveform display device which can easily confirm the tendency of measurement data over a wide time range and the details of the measurement data in a specific section.SOLUTION: The digital waveform display device includes an acquisition unit, a display unit, and a control unit. The acquisition unit acquires first digital waveform data made of aggregate of correspondence information over a first time range between the signal intensity and the time, the first digital waveform data being generated on the basis of the measurement data, second digital waveform data made of aggregate of correspondence information over a second time range shorter than the first time range between the signal intensity and the time, the second digital waveform data being generated on the basis of the measurement data at a higher sampling rate than that of the first digital waveform data, and correspondence section information showing the section for the second time range in the first time range. The control unit causes the display unit to display a composite waveform formed by replacing the section of the waveform based on the first digital waveform data which corresponds to the second time range by the waveform based on the second digital waveform data according to the correspondence interval information.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a digital waveform display device, a digital waveform display system, a digital waveform display method, and a program.

  2. Description of the Related Art A digital oscilloscope or other digital waveform generation device that can generate digital waveform data including a set of information on the correspondence between signal strength and time by sampling an analog signal based on measurement data is known (for example, see Patent Document 1). 1-4). Patent Literature 1 discloses a technique capable of generating digital waveform data at different sampling rates according to the frequency band of an analog signal. Patent Literature 2 discloses a technique capable of displaying a waveform in real time even when the number of pieces of digital waveform data is large. Patent Document 3 discloses that even when an analog signal is sampled at a timing based on an external signal, it is possible to perform a waveform display based on the digital waveform data in real time by compressing the created digital waveform data. Techniques are disclosed. Patent Document 4 discloses a technique based on a low-speed digital waveform based on digital waveform data sampled at a low sampling rate and digital waveform data sampled at a higher sampling rate corresponding to a specified trigger point on the low-speed digital waveform. There has been disclosed a technology capable of simultaneously displaying a high-speed digital waveform.

JP-A-63-185225 JP 2007-93523 A JP-A-2004-361310 JP 2001-272420A

  The technique disclosed in Patent Document 4 and the like will be described in detail with reference to FIG. FIG. 9 is a diagram illustrating an example of a display screen according to the technology disclosed in Patent Document 4 or the like. As shown in FIG. 9, a low-speed digital waveform 91 and a high-speed digital waveform 92 are separately displayed on the display screen, with the horizontal axis representing time and the vertical axis representing signal strength. Further, as shown in FIG. 9, on the display screen, the data points corresponding to the correspondence information between the signal intensity and the time are displayed by black circles, and the approximate curve for the data points is displayed by a broken line. As shown in FIG. 9, a designated trigger point on the low-speed digital waveform 91 and a marker 93 indicating that the trigger point corresponds to the high-speed digital waveform 92 are displayed on the display screen. A specific period 94 including a marker 93 corresponding to the entire time range 92 is displayed on the low-speed digital waveform 91. In FIG. 9, the curve corresponding to the actual measurement data is indicated by a solid line, but the solid line is not displayed on the display screen.

  As shown in FIG. 9, in the technology disclosed in Patent Document 4 and the like, a low-speed digital waveform 91 and a high-speed digital waveform 92 are displayed as independent waveforms. In the low-speed digital waveform 91, data points are distributed over a wider time range than in the high-speed digital waveform 92. However, at the position where the actual measured data is rapidly changing, as indicated by the marker 93 in the specific section 94, the low-speed digital waveform 91 is different from the approximate curve corresponding to the data point from the curve corresponding to the actual measured data. There is a large deviation, and the reproducibility of the measurement data is reduced. On the other hand, in the high-speed digital waveform 92, the deviation of the approximate curve corresponding to the data point from the curve corresponding to the measurement data is smaller than in the low-speed digital waveform 91, and the measurement data can be reproduced more accurately. However, the high-speed digital waveform 92 has a smaller overall time range than the low-speed digital waveform.

  As described above, according to the technology disclosed in Patent Literature 4 and the like, the user needs to refer to the low-speed digital waveform 91 in order to check the tendency of the measurement data over a wide time range, and In order to confirm the details of the measurement data in 94, it is necessary to refer to the high-speed digital waveform 92, so that the steps required for confirmation are complicated.

  Therefore, the present disclosure provides a digital waveform display device, a digital waveform display system, a digital waveform display method, which can easily confirm the tendency of measurement data over a wide time range and the details of measurement data in a specific section. And to provide programs.

  The digital waveform display device according to some embodiments includes an acquisition unit, a display unit, and a control unit, and the acquisition unit is generated based on the measurement data, and generates a second one of correspondence information between signal strength and time. First digital waveform data composed of a set over a one-time range, and generated at a higher sampling rate than the first digital waveform data based on the measurement data, and shorter than the first time range of correspondence information between signal intensity and time. The controller acquires second digital waveform data including a set over a second time range, and corresponding section information indicating a section corresponding to the second time range in the first time range, and the control unit obtains the second section based on the corresponding section information. And displaying a composite waveform in which a section corresponding to a second time range of the waveform based on the first digital waveform data is replaced with a waveform based on the second digital waveform data. According to such a configuration, the waveform based on the first digital waveform data corresponding to the measurement data over a wide time range and the waveform based on the second digital waveform data corresponding to the measurement data in a specific section are combined in one. It can be displayed as a waveform. Therefore, it is possible to easily confirm the tendency of the measurement data over a wide time range and the details of the measurement data in the specific section.

  In one embodiment, the second digital waveform data may include data whose signal strength changes by a predetermined value or more with respect to the signal strength of the immediately preceding data. According to such a configuration, it is possible to confirm the details of the measurement data in a section where the signal intensity changes particularly sharply.

  A digital waveform display system according to some embodiments is a digital waveform display system including a digital waveform generation device and a digital waveform display device, wherein the digital waveform generation device samples an analog signal based on measurement data. Sampling the analog signal at a higher sampling rate than the first digital waveform data, the first digital waveform data comprising a set of correspondence information between signal strength and time over a first time range, and comparing the signal strength with time. Second digital waveform data composed of a set of correspondence information over a second time range shorter than the first time range, and corresponding section information indicating a section corresponding to the second time range in the first time range are generated. A digital waveform generator, a first digital waveform data, a second digital waveform data, and corresponding section information; And a digital waveform display device, comprising: an acquisition unit, a display unit, and a control unit, wherein the acquisition unit includes first digital waveform data, second digital waveform data, and corresponding section information. The control unit displays a composite waveform obtained by replacing the section corresponding to the second time range of the waveform based on the first digital waveform data with the waveform based on the second digital waveform data based on the corresponding section information. Display on the section. According to such a configuration, the waveform based on the first digital waveform data corresponding to the measurement data over a wide time range and the waveform based on the second digital waveform data corresponding to the measurement data in a specific section are combined in one. It can be displayed as a waveform. Therefore, it is possible to easily confirm the tendency of the measurement data over a wide time range and the details of the measurement data in the specific section.

  A digital waveform display method according to some embodiments is a digital waveform display method executed by a digital waveform display device including a display unit, wherein the digital waveform display method is generated based on measurement data, and corresponds to signal strength and time corresponding information. Obtaining first digital waveform data consisting of a set over a first time range; generating a first digital waveform data at a higher sampling rate than the first digital waveform data based on the measurement data; A step of acquiring second digital waveform data composed of a set over a second time range shorter than the time range, and a step of acquiring corresponding section information indicating a section corresponding to the second time range in the first time range; Based on the corresponding section information, the section corresponding to the second time range of the waveform based on the first digital waveform data is defined as a waveform based on the second digital waveform data The substituted composite waveform includes a step of displaying on the display unit. According to such a method, the waveform based on the first digital waveform data corresponding to the measurement data over a wide time range and the waveform based on the second digital waveform data corresponding to the measurement data in a specific section are combined into one composite. It can be displayed as a waveform. Therefore, it is possible to easily confirm the tendency of the measurement data over a wide time range and the details of the measurement data in the specific section.

  A program according to some embodiments obtains first digital waveform data generated by a computer including a display unit based on measurement data and formed of a set of correspondence information between signal strength and time over a first time range. And a second set of information generated at a higher sampling rate than the first digital waveform data based on the measurement data and corresponding to the signal strength and time over a second time range shorter than the first time range. Obtaining digital waveform data; obtaining corresponding section information indicating a section corresponding to a second time range of the first time range; and obtaining a waveform based on the first digital waveform data based on the corresponding section information. Displaying a composite waveform in which a section corresponding to the second time range is replaced with a waveform based on the second digital waveform data on a display unit. Make. According to such a program, the waveform based on the first digital waveform data corresponding to the measurement data over a wide time range and the waveform based on the second digital waveform data corresponding to the measurement data in a specific section are combined into one. It can be displayed as a waveform. Therefore, it is possible to easily confirm the tendency of the measurement data over a wide time range and the details of the measurement data in the specific section.

  According to the present disclosure, it is possible to easily confirm the tendency of measurement data over a wide time range and the details of measurement data in a specific section.

1 is a block diagram illustrating a configuration of a digital waveform display system according to one embodiment. FIG. 3 is a diagram illustrating an example of first digital waveform data. FIG. 7 is a diagram illustrating an example of second digital waveform data. It is a figure showing an example of corresponding section information. 3 is a flowchart illustrating a composite waveform display process executed by the digital waveform display device shown in FIG. 1. FIG. 6 is a diagram illustrating a first digital waveform for describing the composite waveform display process illustrated in FIG. 5. FIG. 6 is a diagram illustrating a second digital waveform for describing the composite waveform display process illustrated in FIG. 5. FIG. 6 is a diagram illustrating an example of a composite waveform displayed by the composite waveform display process illustrated in FIG. 5. FIG. 11 is a diagram showing an example of a display screen according to the technique disclosed in Patent Document 4 or the like.

  Hereinafter, some embodiments will be described with reference to the drawings. In each of the drawings, common elements are denoted by the same reference numerals.

  FIG. 1 is a block diagram showing a configuration of a digital waveform display system 1 according to one embodiment. As shown in FIG. 1, the digital waveform display system 1 includes a digital waveform generation device 20 and a digital waveform display device 10. In FIG. 1, arrows indicate the flow of movement of analog signals, first digital waveform data, second digital waveform data, corresponding section information, and the like based on the measurement data.

  The digital waveform generation device 20 is configured by a digital oscilloscope or the like. The digital waveform generation device 20 includes a measurement data acquisition unit 21, a digital waveform generation unit 22, an output unit 23, an operation reception unit 24, a storage unit 25, a display unit 26, a control unit 27, a feature detection unit 28.

  The measurement data acquisition unit 21 acquires an analog signal based on the measurement data. The measurement data acquisition unit 21 outputs the acquired analog signal to the digital waveform generation unit 22. The measurement data acquisition unit 21 may include, for example, an amplifier, and amplify the acquired analog signal by the amplifier before outputting the signal to the digital waveform generation unit 22.

  The digital waveform generation unit 22 samples an analog signal input from the measurement data acquisition unit 21 and generates a first digital signal including a set of correspondence information between signal strength and time (hereinafter, also simply referred to as “data”). Generating waveform data and second digital waveform data. The first digital waveform data is generated by sampling an analog signal at a predetermined sampling rate (hereinafter, also referred to as “first sampling rate”), and extends over a first time range of correspondence information between signal intensity and time. Consists of a set. The second digital waveform data is generated by sampling an analog signal at a second sampling rate higher than the first sampling rate, and is made up of a set of correspondence information between signal strength and time over a second time range. Here, the second time range is a time range shorter than the first time range. The second time range is a part of the time range included in the first time range. The second time range is, for example, a time range including a point in time when the measurement data changes abruptly.

  The digital waveform generator 22 includes, for example, a thinning circuit and an A / D converter, and the A / D converter samples an analog signal at a sampling timing of a sampling signal output from the thinning circuit. Specifically, the thinning circuit outputs a sampling signal at the timing of the first sampling rate and a sampling signal at the timing of the second sampling rate to the A / D converter.

  Here, a method of generating the first digital waveform data and the second digital waveform data by the digital waveform generation unit 22 will be described in detail. The digital waveform generator 22 continuously samples an analog signal that is continuously input at a first sampling rate and a second sampling rate, and generates digital waveform data. The digital waveform generator 22 monitors whether data included in the digital waveform data being generated at the second sampling rate satisfies a predetermined condition. When the data included in the digital waveform data being generated at the second sampling rate satisfies a predetermined condition, the digital waveform data over a second time range including the data satisfying the predetermined condition is defined as the second digital waveform data. decide. Further, the digital waveform generation unit 22 determines digital waveform data over a first time range including before and after the second time range as the first digital waveform data for the digital waveform data generated at the first sampling rate.

  Whether or not the predetermined condition for determining the second digital waveform data is satisfied is determined, for example, by whether or not the feature detection unit 28 detects a feature position of the digital waveform data generated at the second sampling rate. May be determined based on Details of the detection of the feature position by the feature detection unit 28 will be described later.

  The digital waveform generator 22 further generates corresponding section information indicating a section corresponding to the second time range in the first time range. Specifically, when the above-described predetermined condition for determining the second digital waveform data is satisfied, the digital waveform generation unit 22 determines a section of the second time range with respect to the first time range, and Generate information.

  FIG. 2 is a diagram illustrating an example of the first digital waveform data. As shown in FIG. 2A, the first digital waveform data includes a set of information (data) in which data numbers from 1 to m (m is a positive integer) are associated with signal strength. May be. Further, as shown in FIG. 2B, the first digital waveform data may include information of a first sampling rate. According to these information, when the data number is an arbitrary positive integer X equal to or less than m, the time has elapsed from the data number = 1 by the time obtained by multiplying (X-1) by the first sampling rate. You can see that. That is, the first digital waveform data shown in FIGS. 2A and 2B is a set of information in which time and signal strength are associated with each other.

  The first digital waveform data is not limited to the example shown in FIG. For example, the first digital waveform data may include a set of information in which a data number, a time, and a signal strength are associated with each other. In this case, the first digital waveform data need not include the information of the first sampling rate. However, the first digital waveform data shown in FIG. 2 is preferable in that the time corresponding to each data number does not need to be stored, so that the data amount can be reduced.

  FIG. 3 is a diagram illustrating an example of the second digital waveform data. As shown in FIG. 3A, the second digital waveform data includes a set of information (data) in which data numbers from 1 to n (n is a positive integer) are associated with signal strength. May be. Further, as shown in FIG. 3B, the second digital waveform data may include information of a second sampling rate. According to these information, when the data number is an arbitrary positive integer Y equal to or less than n, the time has elapsed from the time of the data number = 1 by the time obtained by multiplying (Y-1) by the second sampling rate. You can see that. That is, the second digital waveform data shown in FIGS. 3A and 3B is a set of information in which time and signal strength are associated with each other.

  The second digital waveform data is not limited to the example shown in FIG. For example, the second digital waveform data may include a set of information in which a data number, time, and signal strength are associated with each other. In this case, the second digital waveform data need not include the information of the second sampling rate. However, the second digital waveform data shown in FIG. 3 is preferable in that it is not necessary to store the time corresponding to each data number, so that the data amount can be reduced.

  FIG. 4 is a diagram illustrating an example of the corresponding section information. In the example illustrated in FIG. 4, the corresponding section information is information (k in FIG. 4) of the data number of the first digital waveform data corresponding to the start position of the second digital waveform data. Thus, the start time of the second time range in the first time range is the time when the time obtained by multiplying (k-1) by the first sampling rate has elapsed from the time of data number 1 in the first time range. You can see that there is. Further, the end time of the second time range in the first time range is the time when the time obtained by multiplying (n-1) by the second sampling rate has elapsed from the start time of the second time range in the first time range. It turns out that it is.

  As illustrated in FIG. 1, the digital waveform generation unit 22 outputs the generated first digital waveform data, second digital waveform data, and corresponding section information to the output unit 23.

  The output unit 23 outputs the first digital waveform data, the second digital waveform data, and the corresponding section information input from the digital waveform generation unit 22 to the digital waveform display device 10. The output unit 23 includes an interface capable of transmitting information to the digital waveform display device 10 by wire communication or wireless communication.

  The operation receiving unit 24 receives a user operation and outputs information based on the user operation to the control unit 27. The operation receiving unit 24 includes, for example, an input interface such as a button, a dial, or a touch panel provided integrally with the display unit 26, which is disposed on the surface of the housing of the digital waveform generating unit 22.

  The storage unit 25 stores various information and programs, such as setting information such as a first sampling rate and a second sampling rate used by the digital waveform generation unit 22, for example. The storage unit 25 may store the first digital waveform data, the second digital waveform data, and corresponding section information generated by the digital waveform generation unit 22. The storage unit 25 is configured by an arbitrary storage device.

  The display unit 26 displays, for example, a first digital waveform and a second digital waveform. The display unit 26 includes a display device such as a liquid crystal display or an organic EL display.

  The control unit 27 includes, for example, a processor that realizes a predetermined function by reading predetermined information and a program from among various information and programs stored in the storage unit 25, and controls each component of the digital waveform generation device 20. Control.

  The feature detecting unit 28 detects a feature position of digital waveform data generated at the second sampling rate. Specifically, the feature detection unit 28 is an edge detection unit that detects, for example, an edge as a feature position of digital waveform data. For example, the feature detection unit 28 may determine that an edge has been detected at a data position where the signal intensity has changed by a predetermined value or more from the immediately preceding signal intensity among the data included in the digital waveform data. The feature detection unit 28 includes a processor, a memory, and the like. The feature detection unit 28 may be formed of a common member with the control unit 27.

  The digital waveform display device 10 is configured by a computer such as a personal computer. The digital waveform display device 10 includes an acquisition unit 11, a display unit 12, a storage unit 13, an operation reception unit 14, and a control unit 15.

  The acquisition unit 11 acquires the first digital waveform data, the second digital waveform data, and the corresponding section information output from the output unit 23 of the digital waveform generation device 20. The acquisition unit 11 includes an interface capable of receiving information from the digital waveform generation device 20 through wired communication or wireless communication.

  The display unit 12 displays, for example, a composite waveform in which a section corresponding to a second time range of the waveform based on the first digital waveform data is replaced with a waveform based on the second digital waveform data. Details of the composite waveform will be described later. The display unit 12 includes a display device such as a liquid crystal display or an organic EL display.

  The storage unit 13 stores, for example, various information and programs. The storage unit 13 may store the first digital waveform data, the second digital waveform data, the corresponding section information, and the like acquired by the acquisition unit 11. The storage unit 13 is configured by an arbitrary storage device.

  The operation receiving unit 14 receives a user operation and outputs information based on the user operation to the control unit 15. The operation receiving unit 14 includes, for example, an input interface such as a keyboard, a mouse, or a touch panel provided integrally with the display unit 12.

  The control unit 15 includes, for example, a processor that realizes a predetermined function by reading predetermined information and a program among various information acquired by the acquisition unit 11 and various information and a program stored in the storage unit 13. And controls each component of the digital waveform display device 10. More specifically, the control unit 15 includes, for example, the first digital waveform data, the second digital waveform data, and the corresponding section information acquired by the acquisition unit 11, and a program for a composite waveform display process stored in the storage unit 13. , A composite waveform display process is executed. The details of the composite waveform display processing will be described later.

  FIG. 5 is a flowchart illustrating a composite waveform display process performed by the digital waveform display device 10. As shown in FIG. 5, first, the digital waveform display device 10 acquires first digital waveform data (step S1). Further, the digital waveform display device 10 acquires the second digital waveform data (Step S2). Further, the digital waveform display device 10 acquires the corresponding section information (Step S3). The digital waveform display device 10 of the present embodiment uses the acquisition unit 11 to acquire the first digital waveform data, the second digital waveform data, and the corresponding section information output from the output unit 23 of the digital waveform generation device 20. . The order in which the digital waveform display device 10 executes step S1, step S2, and step S3 is not particularly limited, and two or more steps may be executed simultaneously. In addition, the first digital waveform data, the second digital waveform data, and the corresponding section information may be stored in the storage unit 13 in advance. In this case, the control unit 15 transmits the first digital waveform data stored in the storage unit 13 to the first digital waveform data. The waveform data, the second digital waveform data, and the corresponding section information are read and acquired.

  Next, the digital waveform display device 10 generates a composite waveform using the control unit 15 (Step S4). 6 and 7 are diagrams for explaining step S4 of the composite waveform display processing shown in FIG. Specifically, FIG. 6 is a diagram illustrating a waveform based on the first digital waveform data (hereinafter, also simply referred to as “first digital waveform”). FIG. 7 is a diagram illustrating a waveform based on the second digital waveform data (hereinafter, also simply referred to as “second digital waveform”). 6 and 7, the horizontal axis represents time, and the vertical axis represents signal intensity. In FIG. 6, data points corresponding to the correspondence information between the signal intensity of the first digital waveform and the time are indicated by black circles. In FIG. 7, data points corresponding to the correspondence information between the signal intensity of the second digital waveform and the time are indicated by black circles. 6 and 7, curves corresponding to actual measurement data are indicated by solid lines, and approximate curves corresponding to data points are indicated by broken lines.

  As shown in FIG. 6, in step S4 (see FIG. 5), the control unit 15 of the digital waveform display device 10 determines the second time in the first time range T1 of the first digital waveform based on the corresponding section information. A section corresponding to the range T2 is specified. Then, the control unit 15 of the digital waveform display device 10 replaces the section corresponding to the second time range T2 of the first digital waveform shown in FIG. 6 with the second digital waveform shown in FIG. Thereby, the control unit 15 of the digital waveform display device 10 generates a composite waveform.

  The digital waveform display device 10 causes the display unit 12 to display the composite waveform using the control unit 15 (Step S5). FIG. 8 is a diagram illustrating an example of a composite waveform displayed by the composite waveform display process. As shown in FIG. 8, the display unit 12 can display a composite waveform in which a section corresponding to the second time range T2 of the first digital waveform is replaced with the second digital waveform.

  As described above, the digital waveform display device 10 of the present embodiment converts the first digital waveform corresponding to the measurement data over a wide time range and the second digital waveform corresponding to the measurement data in a specific section into one composite waveform. Can be displayed as Therefore, according to the digital waveform display device 10 of the present embodiment, the tendency of the measurement data over a wide time range and the details of the measurement data in a specific section can be easily confirmed.

  In the composite waveform display processing shown in FIG. 5, the control unit 15 has been described as displaying the composite waveform in step S5 after generating the composite waveform in step S4 in advance. However, the control unit 15 may execute step S5 without executing step S4. That is, the control unit 15 causes the display unit 12 to display the first digital waveform, and displays the second digital waveform on a layer above the first digital waveform in a section corresponding to the second time range of the first digital waveform. By doing so, display control may be performed so that the composite waveform is visually recognized.

  Further, a plurality of second digital waveform data may correspond to one first digital waveform data. In this case, the corresponding section information is information indicating a section corresponding to the second time range of each of the plurality of second digital waveform data in the first time range.

  The present disclosure is not limited to the configuration specified in the embodiment described above, and various modifications are possible. For example, functions included in each configuration, each step, and the like can be rearranged so as not to be logically inconsistent, and a plurality of configurations, steps, and the like can be combined into one or divided. .

  Further, the digital waveform display device 10 may be configured integrally with the digital waveform generation device 20. In that case, the configuration common to the digital waveform display device 10 and the digital waveform generation device 20 may be appropriately the same.

  The present disclosure relates to a digital waveform display device, a digital waveform display system, a digital waveform display method, and a program.

1: Digital waveform display system 10: Digital waveform display device 11: Acquisition unit 12: Display unit 13: Storage unit 14: Operation reception unit 15: Control unit 20: Digital waveform generation device 21: Measurement data acquisition unit 22: Digital waveform generation Unit 23: output unit 24: feature detection unit 25: operation reception unit 26: storage unit 27: display unit 28: control unit 91: low-speed digital waveform 92: high-speed digital waveform 93: marker 94: specific section T1: first time range T2: Second time range

Claims (5)

An acquisition unit, a display unit, and a control unit,
The acquisition unit,
First digital waveform data generated based on the measurement data and composed of a set of correspondence information between signal strength and time over a first time range;
A second digital signal that is generated based on the measurement data at a higher sampling rate than the first digital waveform data and is composed of a set of correspondence information between signal strength and time over a second time range shorter than the first time range. Waveform data,
Acquiring corresponding section information indicating a section corresponding to the second time range in the first time range;
The controller, based on the corresponding section information, replaces a section corresponding to the second time range of a waveform based on the first digital waveform data with a waveform based on the second digital waveform data, A digital waveform display device to be displayed on the display unit.   2. The digital waveform display device according to claim 1, wherein the second digital waveform data includes data whose signal intensity changes by a predetermined value or more with respect to the signal intensity of the immediately preceding data. 3. A digital waveform display system comprising a digital waveform generation device and a digital waveform display device,
The digital waveform generator,
Sampling an analog signal based on measurement data, sampling first analog waveform data comprising a set of correspondence information between signal strength and time over a first time range, and sampling the analog signal higher than the first digital waveform data A second digital waveform data sampled at a rate and consisting of a set of correspondence information between signal strength and time over a second time range shorter than the first time range; and a second digital time data of the first time range. A corresponding section information indicating a section corresponding to the range;
An output unit that outputs the first digital waveform data, the second digital waveform data, and the corresponding section information to the digital waveform display device,
The digital waveform display device includes an acquisition unit, a display unit, and a control unit,
The acquisition unit acquires the first digital waveform data, the second digital waveform data, and the corresponding section information,
The controller, based on the corresponding section information, replaces a section corresponding to the second time range of a waveform based on the first digital waveform data with a waveform based on the second digital waveform data, Digital waveform display system to display on the display. A digital waveform display method executed by a digital waveform display device including a display unit,
Obtaining first digital waveform data generated based on the measurement data and including a set of correspondence information between signal strength and time over a first time range;
A second digital signal that is generated based on the measurement data at a higher sampling rate than the first digital waveform data and is composed of a set of correspondence information between signal strength and time over a second time range shorter than the first time range. Obtaining waveform data;
Acquiring corresponding section information indicating a section corresponding to the second time range in the first time range;
Based on the corresponding section information, the display unit displays a composite waveform in which a section corresponding to the second time range of the waveform based on the first digital waveform data is replaced with a waveform based on the second digital waveform data. Steps and
Digital waveform display method including: A computer with a display unit,
Obtaining first digital waveform data generated based on the measurement data and including a set of correspondence information between signal strength and time over a first time range;
A second digital signal that is generated based on the measurement data at a higher sampling rate than the first digital waveform data and is composed of a set of correspondence information between signal strength and time over a second time range shorter than the first time range. Obtaining waveform data;
Acquiring corresponding section information indicating a section corresponding to the second time range in the first time range;
Based on the corresponding section information, the display unit displays a composite waveform in which a section corresponding to the second time range of the waveform based on the first digital waveform data is replaced with a waveform based on the second digital waveform data. Steps and
A program for executing

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