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Automatic inspection method for pin positions and drill holes of differential signal lines

A technology of differential signal lines and pins, applied in the field of printed circuit board inspection, can solve the problems of wasting time, unable to ensure that the results can meet demand, wasting labor costs, etc.

Inactive Publication Date: 2021-06-04
INVENTEC PUDONG TECH CORPOARTION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no reliable inspection program for wiring engineers to check the size and location of the drilled holes. They must be checked manually one by one, which not only wastes time and labor costs, but also cannot ensure that the results can meet the requirements.

Method used

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  • Automatic inspection method for pin positions and drill holes of differential signal lines
  • Automatic inspection method for pin positions and drill holes of differential signal lines

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Embodiment Construction

[0018] figure 1 It is an application environment diagram of an automatic inspection method for differential signal line pins and drill holes (VIA) of a printed circuit board (PCB) according to an embodiment of the present invention. The differential signal line pin position and drilling automatic inspection method is applied to the computing device 100 . The computing device 100 may be an electronic device with data processing capabilities such as a personal computer, a notebook computer, and a server. The computing device 100 includes a processor 10 , a memory 20 and a display 30 , and the memory 20 can store one or more printed circuit board wiring diagram files 40 and an automatic inspection program 50 for differential signal pin positions and drilling holes. The differential signal line pin position and drilling automatic inspection program 50 is used to implement the differential signal line pin position and drilling automatic inspection method 200 .

[0019] The printe...

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Abstract

The invention belongs to the field of printed circuit board manufacturing, and particularly discloses a method for checking a printed circuit board, which comprises: determining whether all parts of the printed circuit board are checked or not, if all parts of the printed circuit board are selected to be checked, checking all pin positions and drill holes belonging to differential signal lines on the printed circuit board, and outputting the inspection result.

Description

technical field [0001] The invention relates to an inspection method of a printed circuit board, in particular to an automatic inspection method for differential signal line pin positions and drilling holes. Background technique [0002] Due to the large increase in wiring density on the current printed circuit board (PCB) and the large number of high-speed differential signal lines on the circuit board, it is easy for wiring engineers to make mistakes when wiring, for example, the same pair of high-speed differential signal lines in phase Instead, drill holes of different sizes are used in the corresponding positions, or the distance between the drill holes is too large. [0003] An ideal differential signal line consists of two structures with equal amplitudes, opposite phases and matched terminations. The receiving end of the differential signal line compares the difference between the two received voltages to determine whether the transmitting end of the differential si...

Claims

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Application Information

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IPC IPC(8): G06F30/398G06F115/12
CPCG01R31/2813G01R31/2815
Inventor 张智云
Owner INVENTEC PUDONG TECH CORPOARTION