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视频信号传输按照介质来分,可以分为同轴电缆传输、双绞线传输和光纤传输;按照方案类型,当前安防行业主流的高清方案可分为IP、HD-SDI和HDCVI等。随着视频监控高清时代的到来,如何将高清视频信号无损、无延时的传输成为厂商、系统集成商思考的问题,而用户在选用不同方案时,则会综合考虑图像效果、可靠性、传输距离、成本等多项因素。近两年,IP网络方案与HD-SDI方案一直二雄争霸,在各大展会上双双被推到了显眼位置,对于二者未来前景,业内人士不置可否。2012年底,浙江大华技术股份有限公司推出的HDCVI令高清传输方案类型又多了一个选择。
Video signal transmission according to the media points, can be divided into coaxial cable transmission, twisted pair transmission and optical fiber transmission; in accordance with the type of program, the current security industry mainstream HD programs can be divided into IP, HD-SDI and HDCVI. With the advent of high-definition video surveillance era, how to transmit high-definition video signals without delay and delay without delay becomes a problem for manufacturers and system integrators to consider. When users choose different solutions, they consider image effects, reliability, and transmission Distance, cost and many other factors. In the past two years, the IP network solution and the HD-SDI solution have been playing a leading role in both exhibitions. Both of them were pushed to a conspicuous position in both exhibitions, and the industry is not complacent about their future prospects. The end of 2012, Zhejiang Dahua Technology Co., Ltd. introduced HDCVI HD transmission type of program and an additional choice.