Design And Implementation Of Audio And Video Compression Transmission System Based On DaVinci Technology

With the rapid development of information technology,the use of multimedia technology has made great progress.and audio and video technology is playing a pivotal role in our daily life.video surveillance system,video conference,Video-on-demand systems and distance education and telemedicine and other multimedia technology applications can be seen everywhere.Whether it is in the monitoring system closely related to life,or in close connection with the real-time video communication technology,the image quality and audio clarity requirements are getting higher and higher.Therefore,the audio and video compression transmission of the proposed solution to a higher demand.Based on Davinci technology,this paper combines the current mainstream and application direction of Davinci technology,and designs a set of audio and video compression transmission system with highly integrated Davinci digital media processor.The system using TMS320DM365 chip as the core processor,respectively using audio codec chip TLV320AIC3101 and video codec chip TVP5146 to collect analog sound and video signal.By using the core processor TMS320DM365 realization of audio and video data compression processing accordingly(In the form of mpeg-4 to compress video processing and in the form of AAC to compress audio processing),and through the EMIF interface will be processed audio and video data sent to FPGA for caching and transmission.This article mainly from the system hardware and software two aspects of the design and implementation.The design of system hardware mainly includes: audio and video acquisition module,the core processor module,external memory module,the power management module,debugging interface module and clock module circuit design.The design of System software mainly includes: the construction of the system development environment,the bootstrap loading,system boot and the development of the application.The test results show that the audio and video playback fluidity,good stability,conform to the design requirements of the project,has certain engineering application value.