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摘要:本发明涉及一种多路音视频压缩传输服务器,包括音频编解码器、视频编解码器、数字信号处理器DSP、ARM微处理器、以太网口、串口、硬盘接口、电源电路和外设的麦克风、摄像头及云台。采用将独立的DSP和ARM两个芯片集成在一个板子上的DSP+ARM架构,ARM微处理器通过串口控制云台实现摄像头的转动、变焦,实时采集现场音视频模拟信号,通过音、视频解码器进行A/D转换后,送至数字信号处理器进行压缩编码,视频信号采用H.264算法压缩,音频信号采用G.729算法压缩,并通过数字信号处理器的HPI接口读取码流数据,进行本地硬盘存储及网络传输,实现对现场的音视频实时监控。本服务器具有很强的控制及网络功能,灵活性、扩展性和升级性好。
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Abstract: The invention relates to a compressed transmission server of multipath audio and video, comprising an audio encoder/decoder, a video encoder/decoder, a digital signal processor (DSP), an ARM micro-processor, an Ethernet port, a serial port, a hard disk interface, a power circuit, an external microphone, a camera and a tripod head. Independent DSP chip and ARM chip are adopted to assemble a DSP+ ARM framework on a board; the tripod head is controlled by the ARM micro-processor through the serial port so as to realize the rotation and zoom of the camera, the audio and video analog signals are collected on-site in real time and are sent to the digital signal processor after an A/D conversion carried out by the audio and video decoder, and then a compressed encoding is carried out; the video signal is compressed by H.264 arithmetic, the audio signal is compressed by G.264 arithmetic, the code stream data is read by a HPI interface of the digital signal processor, and local hard disk storage and network transmission are carried out, thus realizing the real-time control of the on-site audio and video. The server has strong control and network function, good flexibility, extensibility and upgradeability.
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