Design and Implementation of Interaction between Downloading Server and Rendering Device Based on UPnP

Based on UPnP protocol, this paper proposes the design and implementation of interaction for downloading server and rendering device working together. It provides a solution to build a system for media entertainment at home which contains three parts: downloading, rendering and displaying. Rendering device can decode the audio and video files from downloading server which can download various multimedia from Internet manageably based on UPnP AV architecture to displaying device such as TVs at home. And the implementation proved the reliability, usability, and environment protection for family.