In the field of security, high-definition products application is like a raging fire to. In ONVIF, PSIA Alliance Network HD and HD-CCTV alliance Digital HD is gradually occupy future HD product market, and the AHD camera products is also on the security market line. HD products through security market accumulate for years, from the beginning of the simulation monitor to network monitoring, network monitoring based on the derived HD network monitoring, and AHD digital high-definition monitor is the future development of the security market. AHD products processing digital signals through the coaxial cable transmission, the video interface for BNC, using a transmission wire is commonly seen in engineering GB”75-3″ video line, since the majority of users habits, many projects including Party A will be used AHD digital high-definition called” analog HD”, in fact this is called error the. Based on AHD camera products to its own characteristics, its advantages are summarized below:

Because the device uses the BNC interface connection, that is to say we will have the traditional simulation framework system to HD monitor system in the process, without requiring rewiring, only replacing the front and rear end portions, which will provide engineering save enormous time and labor costs.

Ease of use

Because the AHD camera product engineering construction the system frame and simulation framework for monitoring system, using 75-3coaxial cable wiring construction personnel system can be realized, and the operator of the system without training, and more easy to use.

Non compression

Unlike the IP AHD camera monitoring is the video signal is compressed and packetized and transmitted through the network, it is an uncompressed digital signal in coaxial cable transmission with high speed, the original image without any distortion.

HD in real time

AHD camera monitoring from transmission network effects, no IP network monitoring generated image delay problems, in a real-time monitoring and high requirements of the occasion.

High utilization rate

The AHD camera equipment video output image resolution of 1920x 1080, unit area camera layout density drops considerably. In monitoring sites to provide more details of the treatment, such as see face, see the license plate.

Editor this paragraph buying advice

According to city road HD video monitoring of actual needs, in the choice of camera may refer to the following an IT Engineer’s proposal:

1, to meet the all-weather security monitoring needs, the camera should have low illumination function, so that in the evening and nighttime low illumination environment also can acquire clear video images.

2, HD video monitoring needed to reach the 720P/1080P resolution, progressive scan, maximum frame rate should achieve 25frame / s, in order to ensure the fluency of the monitoring video.

3, high definition image transmission interface with broadcasting standard AHD interface, support for uncompressed video image transmission with high speed, high definition digital cameras and HD encoding array through the AHD Guangduan Ji, via an optical fiber transmission of uncompressed video image, to ensure that the images with high clarity, low latency, transmission without attenuation and interference free, also avoid the outdoor monitoring video images by the effects of lightning strikes.

4, high-definition digital cameras should have high signal-to-noise ratio, high dynamic range, thus ensuring the signal quality of images under different environments.

5 with automatic shutter, automatic gain control, automatic white balance of the image pretreatment function.

6, to support the automatic aperture lens, can be matched with various electric lens zoom range to realize the different monitoring distance and range requirements.

7, to support the 485 communication protocol, the camera for remote online upgrade, meet the special application environment changes of the parameters of the requirements.