A multi-screen system synchronous display test method, device and equipment

Abstract

This application discloses a multi-screen system synchronous display testing method, device and equipment, including: connecting the synchronous test signal source with several multi-screen subsystem processors controlling each sub-display screen of the splicing wall; controlling the synchronous test signal source to Several multi-screen subsystem processors uniformly distribute the same clock signal, so that after each multi-screen subsystem processor performs the same processing on the clock signal, it runs and displays the millisecond table on the sub-display screens controlled by them; The millisecond table displayed on the sub-display screens positions the synchronous display results of each sub-display screen. It achieves the objective synchronous quantitative evaluation of the synchronous display of the multi-screen system, and at the same time, the evaluation error will not be caused by the color image switching process, and the technical effect of improving the accuracy of the synchronous quantitative evaluation is achieved.

Description

technical field [0001] The present application relates to the technical field of signal processing, in particular to a multi-screen system synchronous display testing method, device and equipment. Background technique [0002] With the progress of computer technology and network communication technology, building a distributed network application system, improving test efficiency and sharing information resources has become the development direction of modern large-scale computer systems. The super splicing wall application system composed of multiple machines, multiple cards and multiple screens is also called a distributed application system. In the professional application of the multi-screen display splicing wall in the distributed application system, the asynchronous signal processing of each link will be directly reflected on the splicing wall, and based on the multi-screen display, a whole frame of picture is presented, but the multi-display splicing wall The simulta...

AI Technical Summary

Problems solved by technology

In the professional application of the multi-screen display splicing wall in the distributed application system, the asynchronous signal processing of each link will be directly reflected on the splicing wall, and based on the multi-screen display, a whole frame of picture is presented, but the multi-display splicing wall The simultaneous display evaluation of the entire frame is currently subjective, which is not conducive to quantitative and objective evaluation of product development and testing

[0003] In the current multi-screen system application, since each display screen uses an independent signal processing display system, when the final signal is dynamically displayed, due to the differences in the independent signal processing, through testing, it will be found that the graphics display of the entire screen appears Latency causes out-of-sync between displays

like figure 1 as shown, figure 1 It is a test schematic diagram of the multi-screen synchronous test technology using dynamic scrolling video in the prior art, figure 1 According to the test method, it can be seen that the display subsystems of the splicing wall are not synchronized, but the synchronization performance cannot be objectively evaluated, and the speed of each display screen can only be clearly and subjectively judged, and the improvement of the synchronization design cannot be accurately judged. Calculated at 60FPS, each The frame time is 16.666ms, it is impossible to judge the delay time of each frame, and it is impossible to carry out objective synchronous quantitative evaluation

like figure 2 as shown, figure 2 It is a test schematic diagram of the multi-screen synchronous test technology using dynamic operation of different colors in the prior art ( figure 2 is a grayscale image, it can actually be a red-green color image), figure 2 It can be seen that the various subsystems of the splicing wall are not synchronized by the test method, but the synchronization performance cannot be objectively evaluated, and the speed of each display screen can only be clearly and subjectively judged, and the color picture switching process involves computer performance, which is easy to cause errors, especially in When delays add up, it makes testing more complicated

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