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Synchronization method and synchronization card for graphic signals in computer cluster mosaic display system

A computer cluster and graphics signal technology, applied in the field of synchronization cards, can solve the problems of inability to accurately synchronize graphics signals, etc., and achieve the effects of smooth and tear-free images, excellent graphics quality, and high flexibility

Active Publication Date: 2016-10-05
BEIJING ITSYNC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a method for synchronizing graphics signals in a computer cluster splicing display system and a synchronization card, which can solve the problems existing in the prior art when multiple computers simultaneously generate a single ultra-high resolution graphics, The problem of not being able to accurately synchronize the graphics signals output by each computer

Method used

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  • Synchronization method and synchronization card for graphic signals in computer cluster mosaic display system
  • Synchronization method and synchronization card for graphic signals in computer cluster mosaic display system
  • Synchronization method and synchronization card for graphic signals in computer cluster mosaic display system

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Embodiment 1

[0037] figure 1 A flowchart showing a method for synchronizing graphic signals in a computer cluster mosaic display system according to Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes:

[0038] Step S101, receiving graphics signals output by each computer graphics card in the cluster, and converting each graphics signal into a digital graphics data stream;

[0039] Wherein, the received graphics signal can be in the format of VGA, DVI, HDMI, etc.; before step S101, the method also includes: each computer host sequentially numbers the graphics frames that it needs to generate and broadcast, for example, in the system , an ultra-high-resolution graphic is output separately by graphic output software in N computers, and the graphic output software in each computer is responsible for generating and outputting a part of the entire ultra-high-resolution graphic corresponding to it, and, each computer Sequentially number the graphics frames...

Embodiment 2

[0048] figure 2 It shows a specific processing flowchart of a method for synchronizing graphic signals in a computer cluster mosaic display system according to Embodiment 2 of the present invention, as shown in figure 2 As shown, in the system, the actual output frame rate of each computer graphics card is different. Therefore, the output frame rate of some computer graphics cards is faster than the output frame rate of the synchronization card, and the output frame rate of some computer graphics cards is slower than that of the synchronization card. The output frame rate of the card, in order to make all the graphics synchronization cards broadcast the graphics frames with the same sequence number simultaneously, each synchronization card needs to perform synchronization processing on the input graphics signal, and the synchronization processing steps are as follows:

[0049] The writing logic of the FIFO memory executes odd-numbered steps, and the reading logic of the FIFO...

Embodiment 3

[0078] image 3 It shows a flow chart of computer host interrupt processing in the method for synchronizing graphic signals in a computer cluster mosaic display system according to Embodiment 3 of the present invention; image 3 As shown, the host computer interrupt processing steps are as follows:

[0079] Step S301, the system starts;

[0080] Step S302, playing graphic frames;

[0081]In step S303, the host computer receives the suspend interrupt application? If yes, execute step S304, if not return to step S302;

[0082] Step S304, recording the number N of the latest broadcast graphic frame;

[0083] Step S305, stop playing new graphic frames;

[0084] In step S306, the computer receives a restart interruption request? If yes, execute step S307, if not, return to step S305;

[0085] Step S307, re-send a new graphics frame to the computer graphics card, the number of the new graphics frame is the number of the last graphics frame played before the pause plus one, th...

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Abstract

The invention provides a synchronization method for graph signals in a tiled display system of a computer cluster. The method comprises the steps of receiving the graph signals output by graphics cards of computers in the cluster, and converting each graph signal into a digital graph data stream; writing each graph data stream into a corresponding FIFO memory according to synchronous receiving logic, and reading out each graph data stream from the corresponding FIFO memory according to synchronous output logic on the basis of output synchronous signals and clock signals of the system; converting each read-out graph data stream into the corresponding graph signal and then output each graph signal to corresponding display equipment. The invention further discloses a synchronization card. According to the synchronization method and the synchronization card, by means of a single ultrahigh resolution graph generated by the computer cluster and formed by splicing multiple graphs, the frame rates of all the graph signals output to the display system and the phases of the synchronous signals are accurately consistent, a picture integrally output by the system is smooth and is not torn, and low cost and higher flexibility are achieved compared with a system built on the basis of high-end graphics cards which are in a single model and support external synchronization.

Description

technical field [0001] The invention relates to the field of computer graphics processing, and more specifically, to a method for synchronizing graphic signals in a computer cluster mosaic display system and a synchronization card. Background technique [0002] In recent years, in the fields of virtual reality, engineering design, and geospatial information visualization, more and more systems use multi-monitors or multi-projectors to display ultra-high-resolution, ultra-large-area graphics. Such systems often require high data processing capabilities and graphics processing capabilities. Computer cluster systems can provide the high performance required by such systems, and distribute the task of generating ultra-high-resolution graphics on multiple computers to complete. The cluster system also has the characteristics of scalability and modularization, and has high flexibility and high cost performance. In these systems, a key problem that needs to be solved is, if the ta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/14
Inventor 王海洋
Owner BEIJING ITSYNC TECH
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