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为了满足两路视频的实时窄带无线传输要求,设计并实现了一种JPEG2000视频压缩解压缩与多路数据传输系统。系统总线带宽为3.84Mbit/s,视频信号采集、压缩、下传、回放的延时控制在300ms以内。本系统由ADV202来完成视频压缩与解压缩,由FPGA来实现两路视频数据和一路遥感数据的封装及传输。用ATmega128L单片机来完成整个系统的控制。与传统的数据复分接相比,本系统采用总线竞争的数据传输方式,提高了数据传输的带宽利用率,并且满足了视频传输的实时性与稳定性的要求。
In order to meet the real-time narrow-band wireless transmission requirements of two-way video, a JPEG2000 video compression and decompression and multi-channel data transmission system is designed and implemented. System bus bandwidth of 3.84Mbit / s, video signal acquisition, compression, download, playback delay control within 300ms. The system by ADV202 to complete the video compression and decompression, FPGA to achieve two-way video data and remote sensing data package and transmission. Use ATmega128L microcontroller to complete the entire system control. Compared with the traditional data multiplexing, this system uses the bus-competing data transmission method, which improves the bandwidth utilization rate of data transmission and meets the requirement of real-time and stability of video transmission.