Function Analysis And System Achievement Of Real-Time Images Transmission Based On DM642

Along with the development of Internet and technology of frequency compress,people's needs for real-time Internet serve,for example video telephone,video meeting,long range the supervision and long range teaching are increasing.Therefore,the research on real-time encoding of images with Internet is important for the realm of research and application.This design is a system for transmission of real-time images based on DM642 of TI. The built-in system takes application as center,taking the calculator technique as foundation,being applicable to applied system which has the strict request at the function,physical,volume and consume.Currently for example the cellular phone,VCD,car-carry GPS and the counting to control tool machine etc,the built-in software is the core of these digital product.This text carrying on thorough analytical foundation to the characteristics of the DSP chip function and LAN has the research design on the transmission of real-time images. This text carries on thorough analysis on image compression and network transmission, pass by comprehensive comparison,and adopts JPEG compression and TCP/IP transmission protocol. Carrying on a research to the quality of service (QoS) and designing the buffer,we carry out the dynamic control of the quality of service and prove it possible by experiment.This text made reference to a great deal of technique text file of the TI company,taking the RF5 model as foundation,the image compression applied the JPEG function database-jpeg_ti.l 64 provided by TI and the network transmission applied the network set piece NDK of TI. So it improves the efficiency consumedly,and makes real-time transmission possible. This text complete the design of image collection mold, image compression mold,picture transmission mold and customer mold. Appearance quality carried on a test to the whole system, carried to get fluency at the customer, as a result satisfied.