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Bit expansion method for 3D waveform database with high waveform capture rate

A waveform capture rate, three-dimensional waveform technology, applied in the direction of digital variable display, etc., can solve the problem of increasing resource consumption in FPGA, and achieve the effect of enhancing the display effect

Inactive Publication Date: 2017-07-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the overall bit width of the storage unit of the 3D waveform database is widened, the consumption of resources in the FPGA will be increased.

Method used

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  • Bit expansion method for 3D waveform database with high waveform capture rate
  • Bit expansion method for 3D waveform database with high waveform capture rate
  • Bit expansion method for 3D waveform database with high waveform capture rate

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Embodiment

[0033]The present invention uses part of the storage units for bit expansion of the remaining storage units, because at a very high waveform capture rate, when the signal-to-noise ratio of the measured signal is high enough, the data will be concentrated in a certain area, There will be a very high occurrence probability of data in some areas, and the storage in the 3D waveform database in this area overflows, but in some storage areas, the data occurrence rate is extremely low or tends to 0, and the storage units of the 3D waveform database in this area are idle. Therefore the three-dimensional waveform database bit extension method that the present invention proposes is based on the following two considerations: 1, in each column, the first overflow unit is the unit with the highest hit probability of the column most likely; 2, in each column, the distance from the hit probability Storage cells that are closer to the tallest cell are also more likely to overflow, and those th...

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Abstract

The invention discloses a bit expansion method of a three-dimensional waveform database with a high waveform capture rate. Part of the storage units are used as extended storage, and the rest of the storage units are used as mapping storage, and the first waveform data collected is mapped to the column mapping storage unit. In the middle position, the sampling value is used as the data offset of this column, and the waveform data is continuously sampled. Each column of sampling data determines the mapping storage unit according to the difference with the offset. When the storage value of the storage unit in a column reaches its When storing the upper limit, judge whether to perform bit extension. If no bit extension is performed, the display is forced to be refreshed and then switched to the normal mode. Otherwise, the extended storage of each column is used to perform bit extension on the mapped storage unit, and continue to collect and map. After the refresh time is reached, the mapped The storage unit is mapped to the display unit for display. The invention adopts the method of expanding part of the storage unit, and meets the requirement on the bit width of the storage unit under the condition of high waveform capture rate without increasing the capacity of the three-dimensional database.

Description

technical field [0001] The invention belongs to the technical field of digital three-dimensional oscilloscopes, and more specifically relates to a bit expansion method for a three-dimensional waveform database under high waveform capture rate. Background technique [0002] With the development of digital three-dimensional oscilloscope technology, more and more technologies are used in current oscilloscopes to improve the waveform capture rate, reduce the dead time of data acquisition and processing, and try to achieve seamless connection between data, thereby greatly improving It improves the ability of the oscilloscope to capture abnormal signals. However, with the rapid improvement of the waveform capture rate of the 3D oscilloscope, when the signal-to-noise ratio of the measured signal is high enough, the trigger control of the oscilloscope is sufficiently accurate, and the sampling rate is high enough, the traditional 3D waveform database that records the occurrence prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02
Inventor 张沁川蒋俊赵勇王翔辉邱渡裕
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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