HD-CVI is a solution for megapixel high definition applications. It features non-latent long-distance communication at a smaller cost. The name is to do with its base band and quadrature amplitude modulation technology, which can completely separate brightness and hue signal, enhance video quality and avoid CVBS cross talk.

What is HD-CVI?

The HD-CVI is a solution that assimilates both cameras and DVRs. The DVR is used as a node for an over coax P2P (point to point) transmission to the camera and is star topology structured. It comes with two specifications, 1080p (1920×1080) and 720p (1280×720). Also, it features the ASC (auto signal compensation) patent. This allows an extremely low signal distortion across long-distance transmissions. To do long-distance transmissions, you should use a cable 75-3 for within 500m or cable 75-5 for over 500m.

What does it do?

HD-CVI blends video, control, and audio signals and then transmits them over one coaxial cable. This simplifies installation. To further multiple-signal transmissions over one cable, audio, and dual-way, data communication signals are ingrained in a blanking zone. This adds to synchronization with video signals and supports a maximum sampling rate of 44.1kHz thanks to ASC.

The reverse and forwards data channels are compounded in the frame blanking zone. This realizes a two-way end-to-end transmission to help control commands such as PTZ control, camera focus, real-time alarm, and more. The forward producing data supports a high transmission baud rate. The sending time and electric baud rate are predictable, and the collecting end is of high ASC performance.

Contrarily, the reverse outputting data supports a lower baud rate because of its low signal frequency and limited data. Although, by adopting ASC, the reverse channel can bring back some amount of electrical signal during long-distance transmission.


The HD-CVI result is free from IP hassles and allows for simple installation. It can also render smooth HD transmissions during long-distance transmissions. It also displays a no-latency capability for real-time performance. There is no need for compression processing to maintain the original video quality; it can present good quality images. When compared to other analog systems, HD-CVI has an advantage on the transmission distance front. It can transmit up to 500m by using a 75-3 cable for transmission media and features a low signal distortion rate.

HD-CVI is not only a good solution that offers megapixel image quality with long-distance transmission, but it is also easy to install. If you’re considering a CCTV system, then take our fun quiz below to start building your perfect security solution!

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