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Method for realizing multi-screen playing video

A video playback and multi-screen technology, applied in the field of multimedia video, can solve the problems of consuming CPU resources and refresh rate, dropping, and not reaching real-time playback, etc., to achieve the goal of reducing CPU usage, reducing resource usage, and improving efficiency Effect

Inactive Publication Date: 2009-11-25
GUANGDONG VTRON TECH CO LTD
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AI Technical Summary

Problems solved by technology

The larger the video frame size, the larger the video frame data in the memory, and the larger the amount of data transmitted by the bus, which causes the current playback software to play videos across screens. As the number of screens increases, CPU resources and refresh are drastically consumed. The rate drops sharply, and the effect of real-time playback cannot be achieved

Method used

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  • Method for realizing multi-screen playing video
  • Method for realizing multi-screen playing video
  • Method for realizing multi-screen playing video

Examples

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Embodiment 1

[0028] figure 2 Shown is the hardware solution of this embodiment using 2 graphics cards to drive 4 display devices for multi-screen splicing display, wherein, the graphics card driver A drives the display device 1 and the display device 2 through the data lines, and the graphics card driver B drives the display devices through the data lines 3 and the display device 4, both graphics card drivers communicate with the PC. The display resolution of each display device is assumed to be 1024×768, and a 1×4 splicing method is adopted for multi-screen display.

[0029] The above two graphics cards drive four display devices for multi-screen splicing and display hardware solutions, and the specific process of the method for realizing multi-screen video playback across screens is as follows: image 3 As shown, the specific steps are as follows:

[0030] 1. The computer detects all graphics cards connected to the system and confirms the connection relationship between each graphics ...

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PUM

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Abstract

The invention provides a method for realizing multi-screen playing video, comprising steps: finishing the connection and management of plural video cards and display devices; the computer reading the display resolution gross data and the number of the display device, recording the relative position number of respective display device; CPU calculating a dividing way of an entire video image frame based on the quantity of the display device and the number of the relative position, determining the display device number and the divided zoom ratio corresponding to respective divided original resolution video image data block; CPU dividing each frame video image data of the multi-screen playing video file to plural original resolution video image data blocks based on the dividing mode, transmitting each data block to the corresponding display card by a bus; each display card processing zoom to the original resolution video image data block according to the zoom ratio and displaying on the display device. The invention improves the refreshing rate of the multiple-screen playing, reduces the CPU occupation resource and achieves the real time playing effect.

Description

technical field [0001] The invention relates to the technical field of multimedia video communication, in particular to a method capable of playing video on multiple screens across screens. Background technique [0002] With the rapid development of multimedia video technology, consumer electronics, communications, film and television and broadcasting, and computer technology are increasingly closely integrated, especially based on disciplines such as computer graphics, human-machine interface technology, sensor technology, and artificial intelligence. The multimedia video information technology is a highly comprehensive high-tech information technology. The virtual reality technology brought by the playback of multimedia video information can create immersive magical effects, which are widely used in film and television, advertising, games, education, and exhibitions. and other fields. Especially in some special occasions, the application of multi-screen display technology...

Claims

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Application Information

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IPC IPC(8): G06F3/14
Inventor 邹勇图杨月
Owner GUANGDONG VTRON TECH CO LTD
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