HD mode and transmission characteristics in the control system

On the Networking, high-definition, intelligent, integration of developing, technology transfer supervisory system continues to innovate and modernize.

As part of the monitoring system, the various transmission modes have different characteristics. Based on the camera output signal, HD video surveillance has different transmission mode.

HD Webcam: that adapt the Ethernet transmission standard, short transmission distance adapt UTP, long distance transmission is mainly to accommodate an optical fiber or a wireless network. Optical fiber transmission is mainly used Ethernet fiber optic transceiver, Ethernet switch, PON and other equipment. Wireless adoption of 3G, 4G, Wi-Fi and WiMAX.

The transmission network is basically transmission mode HD video surveillance since it has a small transmission bandwidth, low cost, flexible networking idiosyncrasies. But at the same time, but the quality of the compressed video, waiting time, clear motion of the process is not as good as non compressed video. So it is not suitable for someone who has higher demands on the video quality.

HD-SDI camera: HD serial digital component interface (BNC), no compression method. Coaxial cable is used for short distance transmission, long distance transmission through the fiber, HD-SDI optical equipment. HD-SDI transmission method can transmit high-quality images, high security level, without delay, it is suitable for applications with high demands for quality and safety image. Thanks to HD-SDI video transmission band 1.485Gbps pass, occupy a high bandwidth network to add value at the same time, the network group also have a limit, only the use of point-to-point optical fiber transmission.

Currently it left visually lossless coding technology to solve the problem of HD-SDI bandwidth that uses HD-SDI interface, transmission of high-definition video encoding visually lossless, which may reduce the capacity to 1/6 the original. HD video encoding without loss of visual can be significantly reduced cost, single wavelength can support 8 HD-SDI video transmission and networking also support transmission node type.

With the development of technology, combined with the new intelligent technology and analysis technology of cloud storage, security will gradually enter into a 4K image application. As high-definition video transmission applications also face more unlikely to test high-definition transmission technology in the network requires more bandwidth and higher chip technology application platform above, more demanding work conditions, clearer images.

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