Based On The Omap Platform Streaming Media Technology In The Home Environment In Applied Research

With the rapid development of information technology, intelligence zone and residence come near to people, the "digital" is gradually changing people's live ways. Based on the "Intelligent home multimedia terminal" project,we do the applied research on the stream media transmission technology. Multimedia terminal plays an important role in the information realization and intelligent processes of residence.Stream Media is Timeliness and with the strong auto-adapted ability to the change of the network band width.With above merits,it has received very big attention in the home environment domain.Stream Media technology includes:Data gathers, A/V Code&Decode,Storage,Transmits and Playing.Because the mature of A/V Code&Decode technology,the stream media's playing isn't the focal point today.In relatively,How to transmit the stream media in the appropriate way and Control the QoS in the effective way become the essential factor in very many applications situation.The applations on the "Intelligent home multimedia terminal" all releated to the stream media transmission.So the transmission of stream media and feedback control of QoS come to the key when we realized the terminal.Firstly, we introduced basic concepts and foundation protocols of the stream media technologies.Secondly, we do Studies on the band width resources assignment principle, Transmission time-gap algorithm of RTCP packets,QoS parameter's dynamic surveys.Then we discusse in the QoS dynamic feedback mechanism ,setup the simulation model and do some experiments to test the alogrithm we proposed.Thirdly,we do the overall programme design of the "Intelligent home multimedia terminal".It includes System hardware and software platform framework design.Finaly,we introduce the keys of how to relasize the terminal in detail.lt mainly involves the transplant of the embedded OS,the communications mechanism of two kernel and the realization of RTP/RTCP network protocols.Also,cross-compile, debugging methods are mentioned.