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VGA (Video Graphics Array) port test device and test method thereof

A port test and port technology, which is applied in the direction of TV, electrical components, image communication, etc., can solve the problems of eye fatigue of testers and unfavorable health of testers, and achieve the effect of reducing viewing time.

Inactive Publication Date: 2012-12-26
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, testers need to test a large number of monitors, frequent color switching will cause testers eye fatigue, which is not conducive to the health of testers

Method used

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  • VGA (Video Graphics Array) port test device and test method thereof
  • VGA (Video Graphics Array) port test device and test method thereof

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] see figure 1 , a VGA port testing device 100 for testing a VGA (Video Graphic Array, display graphics array) port 200 provided by the present invention. The VGA port 200 includes a red signal output end 210 , a green signal output end 220 , a blue signal output end 230 , a horizontal sync signal output end 240 and a vertical sync signal output end 250 . Each of the above-mentioned output ends is a pin of the above-mentioned VGA port 200 .

[0014] In this embodiment, the VGA port testing device 100 includes a test signal module 10 , a control module 20 , a voltage collection module 30 and a frequency collection module 40 .

[0015] The test signal module 10 , the control module 20 and the prompt module 50 are installed in a computer 300 . The voltage collection module 30 and the frequency collection module 40 are installed in a single chip microcomp...

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PUM

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Abstract

The invention discloses a VGA (Video Graphics Array) port test device. The VGA port test device comprises a test signal module, a voltage collection module, a frequency collection module, a control module and a prompting module, wherein the test signal module is used for sending a video test signal to a VGA port; the voltage collection module is respectively used for collecting voltage signals at a red signal output end, a green signal output end and blue signal output end of the VGA port; the frequency collection module is used for collecting a line frequency signal of a line synchronous signal output end and a field frequency signal of a field synchronous signal output end of the VGA port; the control module is preset with a red voltage comparison value, a green voltage comparison value, a blue voltage comparison value, a line frequency comparison value and a field frequency comparison value which correspond to the video test signal, and the control module is used for sequentially and respectively comparing the comparison values with a red voltage signal, a green voltage signal, a blue voltage signal, the line frequency signal and a field synchronous signal one by one, and judging whether all the comparison values are respectively equal to signals or not; and the prompting module is used for prompting that the VGA port is normal if the comparison values are respectively equal to signals or prompting abnormal if the comparison values are not respectively equal to signals. According to the VGA port test device disclosed by the invention, the test is convenient. In addition, the invention also provides a VGA port test method.

Description

technical field [0001] The invention relates to a VGA port testing device and a testing method thereof. Background technique [0002] A VGA (Video Graphic Array, display graphics array) port for outputting video signals will be provided on the main frame of the existing computer. At present, the test of the VGA port mainly relies on an external monitor. During the VGA interface test, a monitor is usually connected to the VGA port, and then the tester continuously outputs full-screen black, full-screen white, full-screen red, full-screen green, full-screen blue and different brightness to the monitor through the test software installed in the host computer. The monochrome or color bar video signal, and at the same time check whether the monitor can display the corresponding image normally, and manually judge whether the signal output by the VGA port is normal. However, testers need to test a large number of displays, and frequent color switching will cause eye fatigue of te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/02
Inventor 张万宏朱鸿儒
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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