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A video wall signal synchronization method and device

A signal synchronization and splicing wall technology, which is applied in image communication, instruments, TV and other directions, can solve the problems of unsynchronized screen display of display units and inconsistent delay from signals to each display node, and achieve the effect of eliminating delay difference.

Active Publication Date: 2022-03-22
GUANGDONG VTRON TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The embodiment of the present application provides a splicing wall signal synchronization method and device, which are used to solve the problem that due to the influence of the external network environment, the time delay from the signal source signal to each display node is often inconsistent, which eventually leads to different screen displays of different display units. Synchronization Technical Issues

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  • A video wall signal synchronization method and device
  • A video wall signal synchronization method and device
  • A video wall signal synchronization method and device

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Embodiment Construction

[0035] After the existing splicing wall IP video signal is decoded at the encoding end, according to the screen content requirements of the output display node, the corresponding screen is cut and sent to each display node for processing through the network signal. Since the same segmented picture reaches each display node through different network paths, the difference in network environment makes the delay of different display units in the network transmission link often have a difference of several milliseconds to hundreds of milliseconds, resulting in There are differences in the content of

[0036] The embodiment of the present application provides a splicing wall signal synchronization method and device, which is used to solve the problem that due to the influence of the external network environment, the time delay from the signal source signal to each display node is often inconsistent, which eventually leads to different screen displays of different display units. Sync...

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Abstract

This application discloses a video wall signal synchronization method and device. This application is based on the processing method of first transmission and then segmentation. By using each frame image that needs to be displayed by each display unit as the first frame signal as a whole, the external public network is performed in an overall state. Transmission, so that each frame image in the first frame signal can be received by the receiving end after the same network delay, and then through the transmission mode of space division switching, the received first frame signal is further transmitted in parallel to each display unit, It enables the display unit to receive the first frame signal at the same time for subsequent segmentation and display operations, which eliminates the time delay difference of each frame image in the public network transmission process caused by the existing processing method of segmentation first and then transmission, and solves the problem of In the prior art, due to the influence of the external network environment, the time delay from the signal source terminal signal to each display node is inconsistent, resulting in the technical problem of out-of-sync screen display.

Description

technical field [0001] The present application relates to the field of video wall technology, and in particular to a method and device for synchronizing video wall signals. Background technique [0002] With the development of video technology, IP video signals are more and more widely used. In terms of splicing wall applications, various video signals such as DVI, HDMI, etc. are superimposed, segmented and encoded into IP video signals through the video encoding server, and then sent to each display unit for display through the Internet. However, due to the influence of the external network environment, the time delay from the signal source signal to each display node is often inconsistent, which eventually leads to a technical problem that the screen displays of different display units are not synchronized. Contents of the invention [0003] The embodiment of the present application provides a splicing wall signal synchronization method and device, which is used to solv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14G06F13/42G06T7/12H04N5/04H04N5/268
CPCG06F3/1446G06F13/4282G06T7/12H04N5/04H04N5/268
Inventor 马庆刘伟俭刘先材
Owner GUANGDONG VTRON TECH CO LTD
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