HD-CVI vs HD-TVI vs HD-AHD: HD-CCTV Technologies Discussed
HD-CVI, HD-TVI, and HD-AHD are the three technologies HD-CCTV technologies that have gained immense popularity in recent years. When it comes to high definition video transmission for CCTV camera surveillance systems, the speed of transmission, potential data losses, and compatibility of transmission mediums with third party devices have a direct influence on the video quality. Considering all these factors, a standard called high definition serial digital interface (HD-SDI) was introduced. However, with increasing demand and modification of surveillance networks with fiber video transmission, the advanced versions of HD-SDI converters
were introduced. HD-CVI, HD-TVI, and HD-AHD are HD-CCTV technologies introduced for effective high definition video transmission. All these HD-CCTV technologies offer specific benefits. What are these specific benefits? This post discusses all three HD-CCTV technologies in order to make the selection convenient.
High Definition- Composite Video Interface (HD-CVI)
The HD-CVI is the first HD-CCTV standard introduced after HD-SDI. It enables the transmission of high-definition video for over 500 meters over a coaxial cable. This standard offers multiple formats of signal transmission such as audio, video, etc over a single coax cable. Initially, on HD-SDI the resolution of video signals was limited to 960h (960 x 480 pixels). Ever since HD-CVI was introduced, video signals with 1920 x 1080 pixels of resolution have become possible. This means the HD-CVI standard enables transmission of nearly 450% greater resolution of video signals than HD-SDI.
High Definition-Transport Video Interface (HD-TVI)
The HD-TVI is the video transmission standard that enables uncompressed high-definition video signal transmission. It supports the video signal transmission in various resolutions such as 720 x 1080 pixel, 3 megapixels, 4 megapixels, 5 megapixels, and 4k (8 megapixels). As it supports a wide range of resolutions, this technology is highly compatible with fiber optic video transmission
and CCTV transmission over coax cables. This technology has a large scope of application in the HD security camera networks and DVRs.
High Definition-Analog High Definition (HD-AHD)
Analog high definition (AHD) is one of the lesser-known HD-CCTV technologies. This technology is more popular in video production, vehicle surveillance, and closed-loop video surveillance applications. It offers high definition analog video transmission of uncompressed form. This technology supports video transmission via coaxial and RCV cables.
Now that all three HD-CCTV technologies are discussed, it is essential to understand that although these technologies are introduced for coaxial cables, these can be integrated with fiber optics cables too. By using intermediate devices like fiber video converters, these camera technologies can be enhanced in terms of transmission speed, reduction in data loss, and higher bandwidth for buffer-free transmission.
It is also important to source these technologies and related products from the trusted suppliers like VERSITRON. The company offers high-quality HD-CVI/TVI/AHD video surveillance kits
. In order to enhance the performance of fiber video optic transmission networks, they also offer fiber video converters
, ethernet media converters
R.W. Tull is the President of Versitron Inc. He works closely with clients to review layout diagrams and drawings in order to ensure that the best fiber optic solution is achieved for a particular project.