Design And Implementation Of Video Transmitting Server Of Digital Video Recorder

Constructing harmonious society is a topic of society development today. The security and stabilization is the precondition and foundation of constructing harmonious society. In practice the security prevention idea of the Man Protection, Object Protection and Technology Protection is established gradually in people's mind. The Technology Protection is a way of which prevents and scouts the affair which can affect the public security, for example, CCTV technology, infrared detection technology and so on. Especially, the CCTV technology becomes the intuitionistic and wide using technology in security prevention system. The traditional Video Cassette Recorder (VCR) has been replaced by the Digital Video Recorder (DVR) in the Security Prevention System along with the development and prevalence of computer application. Besides the scalability of storage capacity, the convenience of query and handling and the management and control function, the Digital Video Recorder has the interface of network function. The route user can use the Client Software to watch the video from the Digital Video Recorder via the network. Whereas, two serious problems exist in this application. First of all, the Digital Video Recorder needs to connect to the public network, but the software which provides the video service in the Digital Video Recorder has not any security mechanism, thus the security of the Digital Video Recorder will encounter a lot of threat from the network. The second, anybody may watch all of the video as long as anybody use the client software to connect to the Digital Video Recorder, usually a Digital Video Recorder can provide 16 video signals. Furthermore, the client software is able to operate the video files stored in the Digital Video Recorder, it makes the security of the video data encounter threat. Therefore, a scheme which can provide the video service for route users as well as protect the resources of the Digital Video Recorder is very exigent.Through analysis the process of execution of the client software and the Digital Video Recorder software, understand the principle of which the Digital Video Recorder provides the video service for clients, put forward further the design scheme of the Video Transmitting Server of Digital Video Recorder. The use of the Video Transmitting Server does not separate the Digital Video Recorder from the public network but also provide the identity authentication function, and makes the client only watch the video authorized.This article describes following parts:1. Analysis the process of execution of the client software and the Digital Video Recorder software.2. Analysis the network data which the Digital Video Recorder provides service for clients, understand the principle of the Digital Video Recorder.3. Confirm the architecture of the Video Transmitting Server.4. Confirm the functions of the Video Transmitting Server.5. Complete program design of the Video Transmitting Server.6. Complete software test and performance analysis.The Video Transmitting Server is designed for satisfying part of users in requirement today, with development of the security prevention trade, the Video Transmitting Server would be used more widely.