Video multiple-screen combined playing technology based on windows multiple-screen system

A combined playback and multi-screen technology, applied in the direction of closed-circuit television systems, digital output to display devices, etc., can solve complex and difficult-to-apply problems, and achieve the effect of meeting special needs, low cost, and less equipment technology

Inactive Publication Date: 2009-05-27
南京科融数据系统股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you need to combine multiple monitor screens, you need to use a screen splicer. This method is relatively complicated in terms of equipment composition, system cost, and even ease of use.
Therefore, except for well-funded and large-scale monitoring centers, it is difficult for this model to be widely used in ordinary centers

Method used

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  • Video multiple-screen combined playing technology based on windows multiple-screen system
  • Video multiple-screen combined playing technology based on windows multiple-screen system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Take the network playback of Hikvision monitoring products commonly used in the monitoring market as an example. If you only rely on the SDK development kit provided by the manufacturer, it cannot be displayed normally on the extended display. The DirectShow link of its network playback is as follows figure 1 shown. Because the link finally uses the system's default render filter (render filter), it is impossible to achieve combined display between screens.

[0020] Insert a frame capture filter (SampleGrabber) behind the Haikang video decoding filter (Hkm4 Video Decoder), intercept the data stream, convert it, and convert it into a bitmap stream based on RGB signals, while the original video rendering filter (Video Renderer) is replaced by an empty filter (Null Render), and the transformed link is as follows figure 2 shown. The data stream is divided into video data stream and audio data stream by the audio and video separation filter, the video data stream is prov...

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PUM

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Abstract

The invention relates to multi-screen combined video playing technology based on a windows multi-screen system, which comprises: firstly, arranging a plurality of display cards on a computer, connecting each display card with a plurality of displays, displaying windows desktop extensions on the displays, and forming the multi-screen system; secondly, extracting data flow for operation transform before rendering a filter during the playing flow of a DirectShow architecture, and converting the data flow into bitmap flow based on RGB signals; and thirdly, canceling rendering of the filter, providing the bitmap flow after conversion to various displays, and realizing multi-screen combined playing. The multi-screen combined video playing technology based on the windows multi-screen system adopts the windows multi-screen system to convert video signals into the bitmap flow based on the RGB signals, provides the bitmap flow to the displays, realizes multi-screen combined display of monitoring pictures with low cost and less equipment technology, and can fully utilize resources and meet the special requirement of video monitoring.

Description

technical field [0001] The invention relates to a video playing technology, in particular to a multi-screen combined video playing technology based on a windows multi-screen system, and belongs to the field of IT technology. Background technique [0002] In the field of security video surveillance, video wall displays are usually used. In the monitoring rooms of many buildings, we can often see a wall of monitors that display the monitoring images of each area. The traditional analog TV wall display method is single screen and single picture, that is, one screen only displays one picture, and even the current advanced digital transmission display method cannot break through this limitation. If multiple monitor screens need to be displayed in combination, you need to use a screen splicer. This method is relatively complicated in terms of equipment configuration, system cost, and even ease of use. Therefore, except for well-funded and large-scale monitoring centers, it is di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/14H04N7/18
Inventor 费凡李壮
Owner 南京科融数据系统股份有限公司
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