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AHD Technology


AHD Technology: 720p/1080p quality via a coax at the distance of 500 m without any latency and losses


A modern market of video surveillance systems offers the widest choice of equipment and solutions, built under different technologies and tech families, such as: CCTV, HDCCTV ones. All of them differ by something, look like something else, everything has it’s own advantages and disadvantages. No wonder, it’s hard to choose the one tech, which accords to a desirable balance of sot-reliability-quality-simplicity and will meet the specific needs of a customer in so big variety of technologies.
In this article we shortly compare techs, gaining a special attention, and elaborate on AHD one.


 
AHD is a tech of HD/FullHD video, audio and control signal transmission via a regular coax cable at the distance of 500 m without any latencies and losses. NEXTCHIP – is the famous Korean company, developed AHD tech, whose production applies in video recorders and video cameras of the most of manufacturers of video surveillance systems.


AHD tech core features:
High image quality at the resolution of 720p/1080p
The technology uses a progressive scan while forming a signal and division of brightness and color components of an analog signal: that allows eliminating a blur and blinking, improving a color reproduction.





Reliable and inexpensive connection
AHD data transmission technology doesn’t lay a big claim on a coax cable quality. That’s why any available cable can be used for data transmission, including a composite one.


Long distance of a network laying without quality losses
Video data is transmitted without quality losses at the distance of 500 m.


 
         AHD video camera                                                                                 AHD video recorder              

          
Qualitative video without latencies
No signal latencies, indicative for IP-systems.


 
Universal application
AHD video recorders can work in three modes, namely with three types of video cameras: standard analog D1/960H, AHD and IP ones. That allows to connect already installed IP or/and standard analog video cameras to AHD video recorder.


 
AHD video recorders can be easily integrated in an existing video surveillance system, in this case old analog video cameras can be replaced with AHD ones without any difficulties depending on a speed of a system modernization.
AHD video recorders support a work with Cloud service and CMS systems, providing a remote control of a system; allow to manage PTZ devices, has alarm inputs/outputs, provide an ability of a backup and has several video outputs.