The article brings forward the structure of VoD cluster system based on digital TV, realizes data storage, server scheduling, video playing, data buffer and inter-process communication among all the function modules, and it has been used in VoD system. 提出了基于数字电视VoD群集系统的体系结构,实现了数据存储、视频服务器调度、视频播出、数据缓存和各功能模块的进程通信,并应用于视频点播系统。
SDRAM for digital image storage principle, to complete the design of the image storage module; 4 、 Nios ⅱ CPU call the data in the SDRAM into the FIFO buffer, the data is read out and display output through VGA port using the timing control module. 结合SDRAM对数字图像的存储原理,完成图像存储模块的设计;4、通过NiosⅡCPU的调用将SDRAM中的数据读到FIFO缓冲中,经过时序控制模块再将数据读出并通过VGA接口显示输出。