Method for oscilloscope 3D mapping in scan mode

US10677817B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Kuojun Yang · Chengdu, CN
• Wuhuang Huang · Chengdu, CN
• Peng Ye · Chengdu, CN
• Qinchuan Zhang · Chengdu, CN
• Hao Zeng · Sichuan, CN
• Duyu Qiu · Chengdu, CN
• Jun Jiang · Chengdu, CN
• Huiqing Pan · Chengdu, CN
• Lianping Guo · Chengdu, CN
• Feng Tan · Kunming, CN

Key dates

• Filing date: Jan 24, 2018
• Grant date: Jun 9, 2020
• Expiry date: Dec 7, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R13/0236
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for oscilloscope 3D mapping in scan mode. The input signal is acquired using a real-time sampling rate which is Dr times higher, thus more sampling points, i.e. Dr acquired data can be obtained during the time interval between two consecutive horizontal pixels. The Dr acquired data are mapped into a same column of the screen to implement fluorescent waveform display. In addition, to realize the scanning display, a flag X is introduced into the three-dimensional database, when the screen refresh signal arrives, the first Ds acquired data are read out from the unread acquired data in FIFO memory. The three-dimensional database is updated from the flag X, which make the leftmost waveform always be the oldest waveform, the rightmost waveform always be the newest waveform. Thus the 3D mapping is realized in scan mode, letting the DSO have a fluorescent waveform display at slow time-base.