Signal detection apparatus and method for display connection port

Abstract

The invention discloses a signal detecting device of a display connecting port and a method of the device, wherein the detecting device comprises a signal capturing module, and the method comprises the following steps: providing a plurality of analog signals which are captured and transmitted to a display through connecting the display connecting port, wherein the analog signals comprise a vertical signal, a horizontal signal, an R-signal, a G-signal, a B-signal and a signal judging circuit, connecting the signal capturing module, adjudging the level relation between the analog signals and specific data information for judging whether the transmission of the analog signals are in normal according to the setting of users, which is particularly comprises the following steps: firstly, judging whether the vertical signal is transmitted with a specific frequency, secondly, judging whether the level of the horizontal signal exceeds a first quasi voltage, thirdly, judging whether the R-signal, the G-signal and the B-signal exceed the second quasi voltage, thereby judging whether the transmission of the signals of the display connecting port are in normal through judging the relative datainformation of the analog signals.

Description

technical field [0001] The invention relates to a display connection port signal detection device and method thereof, in particular to a display connection port analog signal detection device and method thereof. Background technique [0002] At present, the product is testing whether the function of the display connection port (VGA PORT) is normal. The test method used by the test engineer is to directly plug the VGA connection port product into the screen. During the startup stage, the tester will watch the screen output with naked eyes. Whether it is normal or not, to detect whether the VGA connection port product is normal or not. The testers must have the ability to distinguish the RGB three-color signal on the screen. However, if the testers are inexperienced, or the display speed on the screen is often too fast, they cannot detect the abnormality of the VGA PORT in a short time or cannot find the problem at all. If it is really a product with a problem with the VGA P...

AI Technical Summary

Problems solved by technology

However, if the testers are inexperienced, or the display speed on the screen is often too fast, they cannot detect the abnormality of the VGA PORT in a short time or cannot find the problem at all.

If there is really a problem with the VGA PORT, it often has to go to the boot self-test stage (POST) and then enter the operating system, and it will take a lot of time to find the problem.

Therefore, the detection methods of the prior art must be improved

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