Design And Technology Research Of Network Transmission Adapter

With the development of the network technology, the transmission of digital TV is becoming more diverse. The current hot research is how to transmit the digital TV programs using the powerful network sources. This design makes some deep research in this field. Combined with the Java technology, the adaptor can make full use of the network resources to send the ASI signal and can be monitored and controlled through the network thoroughly.Based on the embedded platform, the adaptor product can reach the system's optimization under the special hardware condition, which also has the simple interface and more powerful function. With the limits of network bandwidth, adaptor may get the more throughout capacity and fulfill the user's requirements.First, the paper introduces the development of digital TV and some main standards about the MPEG-2. Then it demonstrates the related technologies, such as embedded system, B/S technology and so on. The protocols that are mentioned and adapted in the adaptor are the multicast protocol and TCP/IP. The main part of the paper is the method and thinking of the design, which also includes the problems that encountered in the design and the method how to resolved them. At the last, the paper expounds the improvement and enhancement of the system, which includes the function of the DHCP and RTP/RTCP.In the design of the system, the paper has a deep think in the network communication mechanism and brings some practical method. After the consideration of the adaptor's special requirement and condition, we choose the best one to supply the demand, which can reduce the network traffic and has high proficiency.At present, the adaptor's design is basically completed. It shows that system performance is excellent after the module's tests and verification of the whole system.