In digital video, in order to facilitate the long-distance transmission of digital signals, the parallel data is converted into serial data and transmitted to the receiving end through a cable via a cable driver. SDI is short for this serial data interface. HD standard HD-SDI corresponding rate is 1.485Gb/s. The mainstream resolution of HD-SDI cameras used in the security industry is 720P (1280x720)/1080P (1920x1080).
From the structural point of view, the digital camera has the simplest signal structure. Although the digital camera does not need to be coded, it still needs SDI modulation and scrambling. Therefore, SDI modulation chips are also needed. Coupled with the current small scale, digital cameras are currently priced. Higher.
Good picture quality
Because the digital signal is transmitted without compression, the video is not distorted, the image integrity is high, the resolution is high, and the color reproduction degree is good. Because it can provide more details, it can be used as a high-definition video source for intelligent analysis, providing a guarantee for improving the accuracy of intelligent analysis.
No delay, no frame loss
Accurately speaking, there is less delay. Compared with the network monitoring system, HD-SDI can be controlled within 40ms. The network monitoring system generally controls the nominal delay within 500ms. However, after actually passing through various network environments and processing bottlenecks, the delay will be larger, and frame loss and mosaic phenomenon will also occur. HD-SDI does not suffer from frame dropping and mosaic phenomena, and the small delay can realize more convenient and accurate screen manipulation in practical applications.
Project implementation can be smoothly transitioned
The network monitoring system needs to invest more technical training in project implementation and post-maintenance. In addition, the front-end camera needs to be connected with the work platform to develop and consume a lot of manpower. The HD-SDI interface can work directly and smoothly with the traditional camera.
Good interface performance
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PU Sheet
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