Design of video capture and transmission system based on SOPC

According to the development tendency of video capture and transmission system,this paper introduces a new video capture and Internet transmission system based on dual NIOS II soft-cores.CMOS image sensor OV7640 is selected as the sensor chip in the design.The SOPC system consisting of dual NIOS II soft-cores and relevant peripherals is responsible for accepting,caching and Internet transmission of high speed video data.Capture is completed by one NIOS II and Internet transmission is completed by another NIOS II.The dual NIOS II soft-cores run simultaneously and cooperate well,and the system efficiency is remarkably improved.The structure of this SOPC system,the flow of design,the software debugging and the sharing and communication between the two CPUs are introduced.The system chooses NIOS II development board provided by Altera as test bench.Experimental results indicate that the system can realize the function of local-area and network video monitor and the image quality is good.