Waveform control method of digital oscilloscope

Abstract

The invention discloses a waveform control method of a digital oscilloscope, comprising the following steps of: enabling the horizontal direction of a touch screen to correspond to a time shaft of an input signal and the vertical direction of the touch screen to correspond to an amplitude shaft of the input signal; dividing a passage position regulation area, a triggering level regulation area and a triggering time regulation area on the relative position of a screen within a screen area according to a passage position indicator, a triggering time indicator and a triggering level indicator of the digital oscilloscope, determining a waveform scaling regulation area by taking a waveform display area as a center; then determining the CPU (Central Processing Unit) of the digital oscilloscope to execute the following operation according to an area of the touch position of a user: executing current passage switching or moving a waveform along the vertical direction when the passage position regulation area is touched, executing current triggering passage switching or regulating a triggering level when the triggering level regulation area is touched, and moving the waveform along the horizontal direction when the triggering time regulation area is touched. The invention has the advantage that the user can intuitively control various user interface objects already displayed on the screen.

Description

technical field [0001] The invention relates to a digital oscilloscope, in particular to a waveform manipulation method of the digital oscilloscope. Background technique [0002] Traditional digital oscilloscopes generally use mechanical components such as buttons and knobs for manipulation. The relationship between the buttons manipulated by the user, the knobs, the manipulated waveform display effect, and the various screen objects associated with the current waveform display effect is not obvious; for the user, the above-mentioned traditional control method is not intuitive. In addition, in order to control multiple parameters of multiple channel waveforms, a large number of separate buttons and knobs are bound to be introduced, which inevitably increases the cost of the product, and users need to focus their sight and attention on the screen and Moving back and forth between control panels also interferes with analytical work and can lead to fatigue. [0003] Chinese i...

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Problems solved by technology

[0004] 1. The newly introduced touch device only supports one-dimensional operation, while the display interface is two-dimensional; therefore, a touchpad without two-dimensional input capability cannot effectively identify and display multiple image elements on a two-dimensional plane. manipulation;

[0005] 2. It only includes the function of switching the current channel;

[0006] 3. In order to be able to select a specific waveform, the invention proposes the concept of waveform gaze point. According to the explanation in the manual, the waveform gaze point is equivalent to the vertical projection of the highest point and the lowest point of a waveform displayed on the screen. The basis for selecting the waveform is based on these two virtual points, which is not intuitive

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