CAJ | 학술논문

本文阐述一个基于DSP的四路实时音视频采集压缩终端的硬件设计和实现过程.重点讨论了基于TMS320DM642主处理芯片的音视频处理系统的设计,另外对存储电路、网络接口、IIC接口和电源等模块也做了深入讨论.最后对硬件做了信号仿真,指出电路设计和PCB布局布线的关键要点.软件测试结果表明,视音频主观质量较优,系统硬件工作稳定可靠,具有通用性.
본문천술일개기우DSP적사로실시음시빈채집압축종단적경건설계화실현과정.중점토론료기우TMS320DM642주처리심편적음시빈처리계통적설계,령외대존저전로、망락접구、IIC접구화전원등모괴야주료심입토론.최후대경건주료신호방진,지출전로설계화PCB포국포선적관건요점.연건측시결과표명,시음빈주관질량교우,계통경건공작은정가고,구유통용성.
This paper proposes a scheme of the hardware design of a four-channel realtime video coder. The paper focuses on the design of the core chips of TMS320DM642 and the audio/video chips. In addition, the storage, Ethernet, IIC and power source modules are discussed. Finally, signal simulation is discussed and some keys of PCB layout and route are proposed. The software test results prove the hardware works well and produces good visual audio/video quality.