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A high-precision distributed display and control frame synchronization method and system

A distributed, frame synchronization technology, applied in selective content distribution, image communication, electrical components, etc., can solve the problems of high network requirements, poor flexibility, low synchronization accuracy, etc., to achieve high flexibility, high reliability, synchronization high precision effect

Active Publication Date: 2021-05-14
北京市博汇科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a high-precision distributed display and control frame synchronization method and system to alleviate the technical problems of high network requirements, poor flexibility, and low synchronization accuracy existing in the prior art

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  • A high-precision distributed display and control frame synchronization method and system
  • A high-precision distributed display and control frame synchronization method and system
  • A high-precision distributed display and control frame synchronization method and system

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Embodiment 1

[0027] In the prior art, the problem of out-of-synchronization of distributed display video occurs, the root cause of which is that the output numbers of different output nodes cannot be at the same frequency and phase. This problem can be achieved through high-precision network time synchronization (such as 1588 network time synchronization) and phase information network synchronization, and dynamically adjust the phase-locked loop according to the synchronized time and phase to achieve the same frequency and phase output. Based on this principle, the present invention proposes a high-precision distributed display and control frame synchronization method.

[0028] figure 1 It is a flow chart of a high-precision distributed display and control frame synchronization method provided according to an embodiment of the present invention, which is applied to a distributed splicing display system, including:

[0029] Step S102, performing a network time synchronization operation on ...

Embodiment 2

[0075] Figure 4 It is a high-precision distributed display and control frame synchronization system provided according to an embodiment of the present invention, which is applied to a distributed splicing display system, including: a time synchronization module 10, a phase determination module 20, a phase synchronization module 30, and an information acquisition module 40, Offset determination module 50 and frame synchronization module 60 .

[0076] Specifically, the time synchronization module 10 is configured to perform network time synchronization operations on multiple distributed output nodes in the distributed splicing display system, so that the multiple slave nodes among the multiple distributed output nodes and the master node Time synchronization; where multiple distributed output nodes include a master node and multiple slave nodes.

[0077] The phase determining module 20 is configured to obtain a preset frame rate of the distributed splicing display system, and ...

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Abstract

The present invention provides a high-precision distributed display and control frame synchronization method and system, including: performing network time synchronization operations on multiple distributed output nodes in a distributed splicing display system; obtaining preset frames of the distributed splicing display system Rate, and determine the phase to be synchronized according to the preset frame rate; adjust the phase of the synchronization signal between multiple distributed output nodes to be consistent with the phase to be synchronized; respectively obtain the first timestamp information of the current display frame of the master node, the first The first time information of the synchronization signal, the second time stamp information of each slave node, and the second time information of the second synchronization signal; determine the time offset information of the same frame between each slave node and the master node; based on The relationship between the time offset information and the preset frame rate, and the frame synchronization operation of each slave node relative to the master node. The invention alleviates the technical problems of high requirements on the network, poor flexibility and low synchronization precision existing in the prior art.

Description

technical field [0001] The invention relates to the technical field of distributed video synchronization display, in particular to a high-precision distributed display and control frame synchronization method and system. Background technique [0002] For distributed splicing display systems, display synchronization has always been a technical problem, because multiple display devices are independent of each other and cannot be in the same frequency and phase. The resulting phenomenon is that in the seamless splicing screen, the video splicing will appear Tearing, that is, problems with the display being out of sync. [0003] There are mainly two types of distributed display and control synchronization methods in the prior art, low-latency synchronization for locking the source frequency and frame-level synchronization based on the display terminal. [0004] 1) Display synchronization for locking source timing: This is generally used for lossless signal transmission. Multipl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/43H04N21/8547H04N21/4402H04N21/242
CPCH04N21/242H04N21/4307H04N21/440281H04N21/8547
Inventor 安凌志李法洪太海李国华陈书军姜卫平郭忠武
Owner 北京市博汇科技股份有限公司