摘要
针对当下人们对海量高清音视频需求的不断增加而高清音视频压缩传输技术发展相对缓慢这一问题,提出基于DM6467T的音视频同步压缩传输系统设计。该系统以TMS320DM6467T处理器为核心的DSP+ARM双核芯片作为硬件设备,Windows操作系统作为软件开发平台,HDMI摄像头为高清视频采集设备,3.5 mm的麦克风为音频采集设备,利用H.264/AVC中的DCT变换系数奇偶性音视频同步压缩算法进行同步压缩,通过DM6467T中的以太网接口进行同步网络传输至PC机上进行同步观看。测试结果表明该系统达到了预期设计目标。
As people′s current demand for massive high-definition audios and videos increases continuously,and the highdefinition audio-video compression and transmission technology develops slowly,an audio-video synchronous compression and transmission system based on DM6467 T is proposed. In the system,the DSP+ARM dual-core chip with the TMS320 DM6467 T processor as its core is taken as the hardware device,the Windows operating system as the software development platform,the HDMI camera as the high-definition video acquisition device,and the 3.5 mm microphone as the audio acquisition device. The synchronous compression is realized by using the audio-video synchronous compression algorithm based on the odevity of the DCT transform coefficient in the H.264/AVC. The synchronous network transmission to the PC is realized through the Ethernet interface in the DM6467 T for synchronous view. The test results show that the system can achieve the expected design targets.
引文
[1]张硕,杨婷,李博.基于DM6467的视频实时压缩与传输系统的设计[J].电子器件,2017,40(3):617-621.ZHANG Shuo,YANG Ting,LI Bo. Design real-time video compression and transmission system based on DM6467[J].Chinese journal of electron devices,2017,40(3):617-621.
[2]张硕,李博,杨婷.基于达芬奇的HDMI高清视频采编器的设计与实现[J].微电子学与计算机,2017,34(6):54-57.ZHANG Shuo,LI Bo,YANG Ting. Design and implementation of HDMI high-definition video editing based on Leonardo Da-Vinci[J]. Microelectronics&computer,2017,34(6):54-57.
[3]张晶,戴明,孙丽娜,等.基于DM6467T的视频压缩存储和网络传输系统设计[J].液晶与显示,2013,28(6):911-916.ZHANG Jing,DAI Ming,SUN Lina,et al. Video compression-store and network-transmission system design based on DM6467T[J]. Chinese journal of liquid crystals and displays,2013,28(6):911-916.
[4]时美强,李冰,熊军,等.基于H.264/AVC的音视频同步压缩方法[J].电视技术,2009,33(10):15-17.SHI Meiqiang,LI Bing,XIONG Jun,et al. Video and audio synchronization compression method based on H.264/AVC[J].Video engineering,2009,33(10):15-17.
[5]杨峰,陈建春.基于达芬奇技术的音视频压缩传输系统[J].电子科技,2017,30(8):96-98.YANG Feng,CHEN Jianchun. Desigh and implementation of audio and video compression transmission system based on Da-Vinci technology[J]. Electronic science&technology,2017,30(8):96-98.
[6]曾志华,马小雨.FPGA及DSP技术下的实况视频图像处理多种算法探究[J].现代电子技术,2016,39(16):88-90.ZENG Zhihua,MA Xiaoyu. Various live video image process-ing algorithms based on FPGA and DSP technologies[J]. Mod-ern electronics technique,2016,39(16):88-90.
[7]卫建华,邓云兵.高燚,等.基于ARM的QI嵌入式视频采集系统的设计与实现[J].现代电子技术,2016,39(3):30-34.WEI Jianhua,DENG Yunbing,GAO Yi,et al. Design and im-plementation of embedded video acquisition system based on ARM[J]. Modern electronics technique,2016,39(3):30-34.
[8]齐丽凤,陈贺新,赵岩,等.基于DCT系数相关性的音视频混合压缩算法[J].计算机工程与应用,2007,43(1):44-46.QI Lifeng,CHEN Hexin,ZHAO Yan,et al. Mixing compres-sion algorithm of video and audio based on correlation of DCT coefficients[J]. Computer engineering and applications,2007,43(1):44-46.
[9]杜青青,李华,张永林,等.一种基于双模糊控制的视频传输策略[J].科学技术与工程,2013,13(28):8487-8491.DU Qingqing,LI Hua,ZHANG Yonglin,et al. A video trans-mission strategy based on double fuzzy control[J]. Science tech-nology and engineering,2013,13(28):8487-8491.
[10]申强,苑伟政,李太,等.MEMS阵列式推进器及其音频采集系统设计与实现[J].固体火箭技术,2014,37(2):277-280.SHEN Qiang,YUAN Weizheng,LI Tai,et al. Implementa-tion of audio acquisition system for designed MEMS array thruster[J]. Journal of solid rocket technology,2014,37(2):277-280.
