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Everything About HDCVI CCTV Technology

TechMax Solution works with CCTV Camera and other Security Products in India (Gujarat-India).
We provides all types of HDCVI Products like HDCVI CCTV Camera, HDCVI DVR (HCVR), HDCVI High-definition CCTV Camera, etc.
Here we describe all details about HDCVI Technology like
- Overview of HDCVI Technology.
- Working of HDCVI CHIP.
- Benefits of HDCVI Technology.
- Where to use HDCVI?
- Brands deal with HDCVI Technology

Overview Of HDVCI Technolgy

HDCVI means High Definition Composite Video Interface.
HDCVI is a video transmission technology via coaxial cable in high definition, allowing reliable long-distance HD transmission at lower cost, while complex deployment is applicable.
HDCVI offers following Resolutions:
1920H - 1920 X 1080 which compatible with industrial standard 1080p.
1280H - 1280 X 720 which compatible with industrial standard 720p.
HDCVI solution incorporates both cameras and DVRs, and the system is star topology structured inwhich DVR is served as a node to have an over coax P2P (Point-to-Point) transmission to camera.
HDCVI installation is exactly the same as that of conventional analog devices, which posts no special requirements.
Therefore, HDCVI is an optimal solution for megapixel high definition application, featuring non-latent long-distance transmission at lower cost.

Working of HDCVI CHIP

HDCVI chip comprises transmitting chip (TX) and receiving chip (RX), which are designed for front-end HDCVI cameras and DVRs, respectively;
Chips could also be applied in fiber optic transceiver, distributor, matrix as well.

Transmitting Chip (TX)
TX interfaces includes BT1120/BT656 digital video interface, I2S audio interface and I2C conguration interface, which are all of industrial standard design, allowing TX chip to use any standard interface for ISPs and audio chips on the market.
As for analog output, in addition to HDCVI format, the TX chip is also compatible with CVBS.
The TX chip supports 1280H@25fps/30fps/50fps/60fps and 1920H@25fps/30fps.

The figure above shows the simplicity of HDCVI solution with TX chip adopted; its tiny size of the chip also makes itself quite suitable for the application in all kinds of camera sizes.

Receiving Chip (RX)
The RX chip supports HDCVI HD inputs and digital video outputs; I2S audio output, multiple-chip audio cascade output as well as I2C conguration interface; it also supports exible mapping of HDCVI video input channel and digital output channel; each channel is of its own format and built-in equalizer, supporting video parameters setup such as brightness, contrast, hue, saturation, dual-way control signal transmission.

As seen in Figure 2, RX chip has the same interface as AD chip in a conventional analog DVR, which is to say that it provides seamless integration with conventional DVRs; and the built-in equalizer allows HDCVI DVR to receive HD video signal up to 500 meters. The TX chip supports 1280H@25fps/30fps/50fps/60fps and 1920H@25fps/30fps.

In short word, with minor changes done on conventional cameras and DVRs shall the manufacturers embrace a brand-new HDCVI solution, which levels up image quality dramatically, but at a lower cost.


Longer Transmission Distance
Both HDCVI and HD-SDI can transfer HD signal @720p/1080p, but HDCVI has a distinguished advantage at the transmission distance.
With general transmission media, HD-SDI reaches 100 meters at most while HDCVI, at least, transmits 500 meters by using 75-3 cable and featuring low signal distortion rate.


Better Anti-Interference Capability
The anti-interference capability of HD-SDI solution is relatively poor when been placed against high-frequent radiation environment, which could lead to higher bit error ratio while the HDCVI adopts low-frequency modulation technology, making it free from the high-frequency wireless electric radiation to ensure stable video transmission at high image quality.



HDCVI adopts P2P transmission to ensure a smooth and reliable transmission; while the transmission of network camera is based on Ethernet and thus may lead to network jitter and packet loss.
The network HD features video buffer technology and the delay is controlled within 300 milliseconds in the general and fair networking environment; However, HDCVI features no latency capability for an outstanding real-time performance.
No Compression
For HDCVI, there is no compression processed to maintain its original eect and thus present in vivid image quality.


Benefits of HDCVI Technology

Lower Cost
Unlike HD-SDI, which posts high demands on cabling and installation; HDCVI solution inherits the same installing means of conventional analog solutions, which is of great convenience and also decrease the cost.
Smart Control
As HDCVI transmits multiple-signal (video/audio and dual-way data) over one cable, it realizes video/audio synchronized transmission and reverse-signal transmission control at the same time, such as PTZ and zoom control; which further simplies the installation.

Where To Use HDCVI CCTV?

HDCVI Cameras very useful where HighDefinition CCTV Cameras require at Lowcosts and all areas like Banks, Hotels, Restaurants, Residential Buildings, Apartments, Flats, Police Stations, Public Areas, Various Government Sectors, Private Sectros, etc.

Brands deal with HDCVI Technology

Most popular brands deal with HDCVI Technology are:
Dahua, CPPlus, etc.
Click Here To Download Dahua HD-CVI CCTV Product Catalogue in PDF.