Research On 3D Waveform Display Techniques And Brightness Control Of 3D Digital Oscilloscope

Generally oscilloscope is an instrument that is used to illustrate and display an electrical signal graphically.With the rapid development of modern electronic technology and industrial application,testing techniques and equipment?s become very important for reliable product,anomalies detection,rapid design and accurate measurement.Oscilloscope as a kind of electronic testing equipment has become an essential tool for test engineers,developers,and technicians.In designing a DSO(Digital Storage Oscilloscope),the process and display of the captured waveform are the most important as well as the requirements are more critical for the development of the high speed digital technology.And brightness adjustment is also one of the important parts of an oscilloscope to clear vision and understand of a signal.To fulfill those requirements,this paper employs a digital 3D(three-dimensional)waveform display method and brightness adjustment techniques,establish a stable and reliable hardware system,supporting software development and the basic graphics algorithm of oscilloscope.The results show that the waveform display effect meets the display performance requirement.Moreover,it greatly improves the signal vision,reliable testing techniques,and quickly captures transient anomalies such as jitter,runt pulses,glitches,and transition errors.This paper mainly discusses 3D digital oscilloscope waveform display techniques,and detailed description of the brightness control,mainly as follows:1.Waveform Display techniques of 3D digital oscilloscopeThe waveform mapping algorithm is explained from aspects from data acquisition and data processing.And the algorithm is applied to a continuous acquisition digital storage oscilloscope with three dimensional waveform displays.In this paper different display methods are used according to the properties of the single and multiple acquisitions.The statistic information of the sampled data is displayed on the screen by using different colors.2.Brightness adjustment and control of 3D digital oscilloscopeAccording to different signal characteristics,this paper develop and implement various brightness adjustment methods,such as exponential brightness adjustment method and piecewise linear transformation method to analyze and observe the signal brightness,signal information,signal behavior,signal anomalies very clearly.Exponential variation method has two parts(1)Positive exponential variation and(2)negative exponential variation.Piecewise linear transformation method are used to compare with other methods.Those methods significantly improve the ability to analyze and observe signal brightness,information,behavior and anomalies.Three brightness adjustment algorithms have been designed and implemented in the prototype.