SECURITY OVER IP
Considering IP network based surveillance IP Suitability By Tim Biddulph, IP Product Manager, Samsung Techwin Europe
Tim Biddulph highlights issues surrounding the suitability of IP network based video surveillance system.
Introduction One of the main drivers behind the migration from digital video recording (DVR) to IP network based video recording (NVR) is standardisation. The vast majority of recently constructed buildings utilise a structured cabling system designed to support all the systems within, from telephones to building management. It is only logical that security systems should also use the same infrastructure. In the past, most networks were not reliable, secure or fast enough to allow security products to be added to them, but it is actually the maturity of the network that makes it possible to support security products. End users will no longer accept having additional cable systems added to their premises when they have already invested in a standardised infrastructure that is flexible enough to last for years to come. Affordable IP products from major manufacturers have helped to accelerate the migration as it quickly becomes a lower cost option to install IP cameras where an existing network infrastructure exists.
Security Managers The availability of IP network based video surveillance systems has transformed security managers’ ability to make best use of resources to ensure that their assets are protected and that staff can work in a safe and secure environment. A key feature of Video over IP technology is the ability
to control cameras and view live or recorded images from anywhere on the network. This means that a security manager can be based anywhere in the world and yet have immediate access to very high resolution images to allow them to analyze any incident and if appropriate, pass the evidence onto the police for prosecution purposes. The availability of Mobile apps means that video can even be streamed to a smart phone or tablet. Leading manufacturers continue
to offer and support analogue based CCTV products and systems. The recent development of 960H recording technology has in fact enabled Samsung Techwin to launch a new range of DVRs, which when added to an analogue system can provide an instant and dramatic improvement in the display and recording resolution of images captured by industry standard analogue cameras.
IP Advantages Cost savings: The potential for substantial savings on cabling installation costs in that an existing network can be used instead of installing totally new cables. A single network cable is also able to carry video, audio and data, as well as provide telemetry and PoE (Power over Ethernet). A company or organisation’s network manager is likely to veto this option if there is any fear that the transmission of video over the network may disrupt the normal flow
of valuable data. It depends to a large extent on the size of the bandwidth available and with the increasing use of web based video conferences, webinars and online resources such as YouTube, it would seem that networks are being increasingly designed to simultaneously handle data and the bandwidth hungrier demands of video streams. Resilience: Mission critical video
recording can be stored at any location on the network and retrieved from any PC by an authorised user. A high level of redundancy can therefore be introduced by choosing to simultaneously record and store video at multiple locations. With the latest generation of IP megapixel and HD cameras there is also the option to record and store images of any incidents on the ‘edge’ via an on- board SD card HD Cameras: IP based surveillance
systems allow users to gain maximum benefit from the latest generation of high definition cameras that can deliver so much more than conventional analogue CCTV cameras which typically generate images comprising of just 0.4m pixels. An HD camera, depending on the field of view, can do the job of several analogue cameras as it can cover a wide area and then zoom in very close when required to a distant object without ‘pixilation’ appearing in the image. The recent availability of multi-megapixel cameras offers the possibility of even higher definition images. Whilst these high definition cameras can be connected
Migration to IP network based video recording is being driven by standardisation. 30 NETCOMMS europe Volume III Issue 3 2013
www.netcommseurope.com
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