Digital oscillograph and its display method

A technology of digital oscilloscope and display method, applied in the direction of digital variable display, etc., can solve the problem of smooth and delicate visual effect without analog oscilloscope, and achieve the effect of good visual display effect and delicate signal waveform.

Active Publication Date: 2011-07-20
RIGOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this way of displaying waveforms correctly expresses a process of signal trajectory changes, due to the discrete nature of digital signals, when observing waveforms, it is often seen that there will be obvious turning changes in the signal, which is not like that of analog oscilloscopes. Smooth and delicate visual effects, and at the same time, the waveform representation of one color also erases various probability features that should exist in the signal

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  • Digital oscillograph and its display method
  • Digital oscillograph and its display method
  • Digital oscillograph and its display method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this embodiment, only point display is performed without vector display in the STOP state. Such as figure 2 It is a flow chart of the method for point display in the STOP state of this embodiment.

[0052] Combine below figure 2 To explain in detail, we take a column of pixels on the display screen as an example for illustration. The display method of a digital oscilloscope can be divided into a reading process, a calculation process, a relationship establishment process and a display process.

[0053] The reading process refers to reading the sampling data points of the current frame (see step S101 ), where the sampling data points of the current frame can be read from the memory.

[0054] The calculation process refers to the calculation of the probability of sampling data points appearing on the same pixel. Such as figure 2 As shown, the calculation process specifically includes the following steps:

[0055] Step S102, calculate the number N that the sampl...

Embodiment 2

[0071] In this embodiment, both dot display and vector display are required in the STOP state. Such as image 3 Shown is a flow chart of the method in the STOP state of this embodiment.

[0072] Combine below image 3 In detail, steps S101, S102, S103, S104 and S105 are as image 3 As shown, it has been described in detail in Embodiment 1, so it will not be repeated here. Here we will introduce in detail how to determine the color of the connection line between two adjacent pixel points displaying sampled data points after the color index value of the pixel point has been calculated. Here, the interpolation method for determining the shape of the connection line can be a linear interpolation method, which will not be described in detail in the present invention. The present invention focuses on determining the color of the inserted connection line.

[0073] First, compare the color index values ​​of two adjacent pixel points displaying sampling data points, and select the ...

Embodiment 3

[0084] In this embodiment, only dot display is performed but no vector display is performed in the RUN state. Such as Figure 4 Shown is a flow chart of the point display method in the RUN state of this embodiment.

[0085] The basic principle of point display in RUN state is the same as that in STOP state, and the method of calculating the probability of sampling data points appearing on the same pixel in each frame is also the same. The difference is that point display in RUN state Not only is the probability value calculated based on the sampled data points of the current frame, but the average probability value is calculated considering the sampled data points of multiple frames displayed before. In this embodiment, it is assumed that the current frame and the multiple frames displayed before have a total of n frames, n>1, and n is a positive integer.

[0086] As shown in the figure, the point display method in the RUN state can also be divided into a reading process, a ...

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Abstract

The invention provides a display method of the digital oscillograph. The method includes: reading the sampled data point of present frame; computing the probability which the sampled data point disappears in the same pels point; setting the corresponding relation between the probability and color; the sampled data point displays the corresponding color on the pels point. Also, the invention provides a digital oscillograph. The invention can make user know the disappear probability of every component in signal and disply by the shading color. Even the discrete digital signal, it can make the signal near to nice and smooth.

Description

technical field [0001] The invention relates to the technical field of digital oscilloscopes, in particular to the technical field of digital oscilloscope display, specifically a digital oscilloscope and a display method thereof. Background technique [0002] With the rapid development of digital oscilloscope technology in recent years, traditional analog oscilloscopes are gradually unable to meet the needs of the market, but some advantages of analog oscilloscopes are still unmatched by digital oscilloscopes, and the display mode of analog oscilloscopes is one of them. [0003] The analog oscilloscope uses the method of electronically striking the fluorescent screen to display the waveform, and the fluorescent screen has an important feature. When a certain part of the fluorescent screen is hit by electrons more times, the brightness of this part will be higher. Therefore, when the analog oscilloscope displays the waveform, it can not only express the signal content through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02
Inventor 王悦王铁军李维森
Owner RIGOL
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