基于网络教育的综合业务终端音视频模块的硬件设计

Audio-video model hardware design based on E-learnning mutiple business interface

根据视频模块需求分析及视频数据处理流程,提出了综合业务终端视频模块的总体设计方案,通过对现有的音视频解码芯片的反复比较,确定了以ST公司的STi5518作为音视频模块MPEG-2解码芯片,实现了基于网络教育的综合业务终端音视频模块的硬件设计.

According to video model demand analysis and video data processing, program design of IST video model is presented including six major functional models： the main control interface model, audio and video decoding model, memory module, external interface module, video output model and power model. By comparing with the existing audio and video decoding chips, STi5518 is selected as the MPEG-2 decoding chip in A/V model.