| With the enhancement of the public security awareness in modern society, videomonitoring technology has been widely applied. System’s performance needs to beimproved, due to the mass data of video processing and the complex compressionalgorithms.Besides,aircraft system adopts special power supply solution,which is notcompatible with traditional Video encoding system.Therefore, to design ahigh-performance and low-cost video encode system is quite necessary and of greatvalue.This article implements an embedded system of video encoding for aircrafts, basedon DaVinci DMSOC TMS320DM368. It captures4channels of composite video,encodes them using H.264algorithm and then transmits the encoded data to theserver.Supervisory circuit controls LDO and DC-DC, which guarantees that the CPUcore and I/O get powered in the right order. The application, running on Linux OS, isdesigned to take full advantage of the Codec Engine. Video capture is realized by usingVISA API, while Real-time network transmission is realized using the UDP protocol.The experimental results show that the system is compact, flexible and stable, with littletime delay. Besides, it requires low network bandwidth. Therefore, it meets the real-timeand high-efficiency requirements well.The video encoding system has reached the expected performance. It can be used as aclient of video monitoring network, which lays a solid foundation for the design of thewhole monitoring system. |
