Dahua HDCVI

Dahua Technology has unveiled a High Definition Composite Video Interface (HDCVI) technology. This has in turn been recently tested in the UK by Benchmark magazine ( see March 2014 issue). This new technology is unique to Dahua and they have labelled it HDCVI. The main  feature is the fact that  over-coaxial-cable it can produce analogue HD video transmission, allowing reliable long-distance HD transmission at lower cost. It should be noted though that Benchmark have tested the technology and question the performance of HDCVI where distances of over 100m are exceeded.

However that said, Dahua have labelled HDCVI as a breakthrough in HD technology and a unique one within the industry. Dahua claim that HDCVI offers the best upgrade path to high definition CCTV while still facilitating a conventional cabling environment but incorporating advanced features.

 

HDCVI technology is capable of delivering 1080p & 720p HD video format by using analogue modulation; in other words HD over coax but in addition also offers megapixel high video quality with more of the detail retained.

 

The claim from Dahua is that by using coax, HDCVI can support long-distance transmission. A point still to be proven in the field however it is not disputed that HDCVI is able to achieve reliable long range and non-latent transmission without further need for relay devices. In a like for like comparison with HD-SDI HDCVI however seems to shows a distinct advantage. With general transmission media, HD-SDI reaches 100 metres at most while HDCVI can in some circumstances transmit 500 metres by using 75-3 cable.

 

A major benefit over IP is that this new technology suffers no latency and this facilitates an outstanding real-time performance that requires no compression, as a result the new Dahua DVR successfully maintains the original quality and thus presents vivid images.

 

The clever part with the new HDCVI format is that it can carry three separate signals over the coax. These are composite video, audio and control.

 

In summary, Dahua believes that HDCVI is an industrial breakthrough, a revolutionary technology that offers megapixel image quality over long-distance transmission while enjoying the simplest installation requirements.

 

 

AVIGILON HD PRO camera range.

HD Pro Cameras

 

Avigilon are about to Introduce their new line of HD Pro cameras. Avigilon claim that these cameras are the industry’s most powerful and they also claim these are the most innovative line of high-definition cameras that the have been manufactured to date.

 

The new HD Pro cameras are available in three different versions. This is the 8 MP, 12 MP and 16 MP resolutions. Each camera has been completely re-engineered on Avigilon’s next generation H4 platform and designed to deliver the ultimate combination of performance, processing power and bandwidth economy.

Avigilon have achieved this through the seamless integration with Avigilon Control Center by using Avigilon’s proprietary HDSM 2.0 technology. Avigilon’s HD Pro cameras also come with onboard storage capabilities, allowing for the storage of footage directly on the device using a standard SD card. This is another step forward in edge recording.

Avigilon have deployed their technology in many different places from stadiums and airports to large-scale critical infrastructure projects and Avigilon’s new HD Pro cameras continue to provide vast coverage with unparalleled image detail.

KEY FEATURES BENEFITS OF  THE NEW AVIGILON RANGE INCLUDE

8 MP, 12 MP and 16 MP resolutions.

Capture high-quality, detailed images over vast areas, while providing maximum coverage options.

H.264 Compression H.264 compression allows for maximum image quality while minimizing impact on bandwidth and network performance.

Focus and Iris Control of SLR Lenses.

Remote focus for ease of installation and operation.

Plug-and-Play No external power required.

Flexible lens options Compatible with both EF and EF-S mount lenses for the best possible optical quality.

Onboard storage SDHC and SDXC card compatability for storage of video footage directly on the device.

LightCatcher TM Technology Collects significantly more detail from a low light scene, to deliver higher quality colour images with far less noise than other low light cameras.

 

The H4 platform and HDSM 2.0 Engineered using H.264 compression technologies, Avigilon’s next-generation H4 platform allows for improved overall camera performance, including faster processing power, more efficient bandwidth management and superior image detail.

So how is this achieved?

Its quite simple, by harnessing the strength of Avigilon Control Center and the second generation of our patented High Definition Stream

Management technology (HDSM 2.0), our H4 platform intelligently and efficiently manages your HD data, letting you view and search through high-definition video easier than ever before, with fewer strains on network resources. The combination of these two revolutionary technologies results in Avigilon’s most powerful cameras yet, which means your system can maintain optimal performance while still getting unparalleled image detail.

Vast coverage. Superior detail.

The HD PRO series is built to accomodate the coverage of  large areas such as Stadiums, carparks and airports, Avigilon’s HD Pro camera series are the ultimate camera for providing full situational awareness combined with crystal clear detail when zoomed in. Monitor a full stadium and capture fan disruptions to comply with mandatory government regulations. Cover a full parking lot and identify number plates. Or cover the entire tarmac of an airport while still being able to distinguish plane numbers. Regardless of your coverage needs, Avigilon’s HD Pro cameras provide the power and detail you need to keep your environment safe and secure. If you need security, need to monitor public spaces, reduce false injury claims, control crowds and prevent theft then look no further than the Avigilon HD PRO camera range for unimaginable detail.

 

DIY HD CCTV camera installation

HD cctv can be carried over coax or across an IP network. The first option is great for CCTV upgrades to HD where you have an existing analogue system and want HD but do not wish to replace all your cable infrastructure. So could you install HD over coax yourself. Well, with the right guidance yes. After all you are just replacing ends and that’s what makes HD CCTV over coax such an attractive option for many.

 

The second route is HD IP perhaps this is a little more involved but there are  many IT professionals who would find designing and installing an HD CCTV camera system quite simple. The important point to consider is the initial design of the network is critical. It is also very important lighting is considered as well as the amount of cameras you will need once the system is at full capacity not what the system actually requires now. Each HD camera we add to a system will add a bit more pressure as to how the system as a whole will perform.

 

So firstly sit down and think where you want your HD CCTV system to be in 5 years’ time. Is the site/operation likely to expand ,if so build in suitable redundancy. Make sure the backbone of the system is up to spec. Sometimes fibre will be your only option. Use suitable switches anything substandard will affect the performance of the system and always ensure the NVR /software you choose can handle the cameras you need to install. ONVIF compliancy does not guarantee you can control or focus your cameras it just means you can see the image. So steer clear of too much mixing and matching of different manufacturers technology.

 

Finally the lighting. HD CCTV cameras are very light hungry. Much disappointment has greeted HD because no lighting consideration is given prior to an installation. IR illuminators form the main solution when designing an HD CCTV system however some manufacturers are now marketing high performance lowlight HD cameras as well HD cameras complete with IR illumination built in.

 

So is it easy to install a DIY HD CCTV system? Well the conclusion is that you will need some sort of experience with CCTV design but yes it can be done and with the help of sites such as HD CCTV solutions you can purchase the kit you need to ensure your system will operate to its full potential.