Method and device for detecting differential via-hole crosstalk

A differential via and via technology, applied in the electronic field, can solve problems such as time-consuming and labor-intensive, and easy to miss inspection, so as to improve work efficiency and realize the effect of automatic inspection

Inactive Publication Date: 2017-11-24
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0003] However, in the prior art, in order to determine whether there is crosstalk in each pair of differential vias, it is

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  • Method and device for detecting differential via-hole crosstalk
  • Method and device for detecting differential via-hole crosstalk
  • Method and device for detecting differential via-hole crosstalk

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[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0041] The core of the present invention is to provide a method and device for inspecting crosstalk between differential vias, which are used to improve inspection efficiency and inspection quality when inspecting differential vias.

[0042] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific...

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Abstract

The invention discloses a method and device for detecting differential via-hole crosstalk. The method comprises the steps of storing position information of all via-holes in a to-be-detected board card in advance and a mapping relation of all the via-holes and all signal lines; extracting target position information of target via-holes corresponding to to-be-detected signal lines according to the mapping relation after a user inputs the to-be-detected signal lines to calculate the difference of target differential via-holes corresponding to the target via-holes; judging whether the distance conforms to the requirement or not, and if not, determining that crosstalk exists in the target differential via-holes. As can be seen, compared with an existing manual inspection mode, automatic check of the crosstalk of the target differential via-holes can be achieved, and the work efficiency is improved. Besides, the invention discloses the device for detecting the differential via-hole crosstalk, and the device has the advantages.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a method and device for checking crosstalk between differential vias. Background technique [0002] In cloud computing products (servers, storage, etc.), the transmission rate of signal lines on motherboards, high-speed backplanes, etc. is getting faster and faster. In order to ensure that the signals received by the receiving end have good signal integrity, the The crosstalk requirements are getting higher and higher. Board cards, such as PCB boards, have crosstalk due to coupling between signal transmission channels, noise caused by mutual inductance and mutual capacitance. The signal transmission channel on the PCB includes transmission lines on the PCB, vias for connecting transmission lines of different signal layers, and the like. In a specific implementation, the position information of each via hole on the board will be recorded. According to the Intel design speci...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/39
Inventor 李艳军
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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