Device and method supporting multichannel high definition video decoding

Abstract

The invention relates to a device and method supporting multichannel high definition video decoding. The device comprises a main processor unit, a switching network unit, a high definition decoding unit and a high definition interface unit; wherein the main processor unit is a processing system, audio and video data is transmitted to the high definition decoding unit by communication between the switching network unit and the high definition decoding unit, the high definition decoding unit decodes the audio and video data and outputs the decoded data to a display by the high definition interface unit. The device can distribute high definition audio and video data in large quantities efficiently and can realize multichannel simultaneous decoding on a plurality of high definition decoding units by the main processor unit and the switching network unit.

Description

Technical field [0001] The invention relates to the field of network video monitoring, and in particular to a device and method for supporting multi-channel high-definition video decoding. Background technique [0002] With the increasing demands of the entire society on the public security environment, there is an upsurge in the construction of large-scale video surveillance projects such as safe cities and digital urban management in various parts of the country. The common features of this type of video surveillance projects are multiple surveillance points, wide coverage areas, and high storage requirements. To meet these needs, these projects all use IP-based network video surveillance systems as their networking architecture. [0003] A typical IP-based network video surveillance system that is often used at present, such as figure 1 As shown, it includes an analog camera 11, an encoding device 12, an IP camera 13, an IP network 14, a storage device 15, a decoding device 1...

AI Technical Summary

Problems solved by technology

[0006] In comparison, the first method uses industrial computer, which is essentially a PC-based implementation solution. The advantage of this solution is that PC-based development tools and resources are very rich, and the system development and implementation is less difficult and easy to implement. The disadvantage is that due to the invasion of viruses or accidental deletion or misoperation of operators, the stability of the system is poor, and it is difficult to guarantee 24-hour uninterrupted operation

[0007]The second method is based on the implementation of embedded processor and embedded operating system. The advantage of this solution is that the system is efficient and stable, and the disadvantage is that the technical threshold is high. Difficult to develop

[0010]Second, on the display device, the monitors provided by many manufacturers can support high-definition resolution. Due to image stretching, the details of the image will be unclear. At the same time, with the improvement of the resolution of various display devices, it is also possible to display multiple monitoring images on one monitor.

[0011]However, the decoding equipment supporting high-definition is still very scarce, and has become the bottleneck of high-definition network video surveillance system, which needs to be solved urgently

[0012] For example, in the patent application CN200720082121.0 "Video Surveillance Display Server", it focuses on introducing the architecture of the decoding device based on the PC platform. In the decoding module described in it, Support for HD is not stated;

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