Friday, May 23, 2008

Digital Networked CCTV systems

The Components of Digital Network CCTV Systems Network



CCTV System


Digital Networked CCTV systems
Digital Network CCTV uses a Local Area Network (LAN) to transmit video streams for recording and display. Because Network CCTV Systems use standard Ethernet and Internet protocols, the full range of modern, cost-effective transmission media can be used, for example Wireless Ethernet, Broadband Connections, Power over Ethernet and Powerline. Depending on bandwidth and other criteria, your existing LAN can usually be used to carry video traffic alongside the normal network traffic. Unlike traditional CCTV systems - where co-axial cables need to be radiated out in a star from the control room - a Network CCTV Camera can be placed anywhere you have a network point. In fact, installing a camera is so easy that you can install a temporary camera in minutes if you have a particular troublespot. Likewise, the recording and viewing of the cameras can take place anywhere on the network. If you already have traditional, analogue CCTV cameras these can be readily integrated into the Digital Network CCTV Our ViewCommander CCTV software runs on standard PCs and allows you to record and view all of the IP Cameras and IP Video Servers on the network.

Camera Software Network camera software is the key to a successful installation. The software manages the cameras, displays and records the video streams and can act as a server, making the video streams available to any standard browser on the network. ViewCommander from Camea runs on standard Windows-based PCs, giving it the power to run sophisticated algorithms for motion detection, image tracking and alarm management. ViewCommander is not limited to a single manufacturer’s cameras; it frees you to choose the most appropriate cameras for your needs. Cameras Camea can supply a wide range of cameras that connect directly to the network:· Standard box-type network cameras.· Compact network cameras.· Vandal– and weather– resistant network cameras.· Outdoor network camera with infra-red illumination.· Pan-Tilt and Pan-Tilt-Zoom network cameras for internal and external use.· Many models are also available with wireless functionality and can use Power over Ethernet.We can supply leading brands, such as Axis, Sony and Panasonic as well as a wide range of our own-brand cameras. Network Video Servers These devices take a standard, analogue video stream and convert them into a network video stream. They are used to integrate existing systems into the digital network, avoiding the need to replace existing cameras, or to integrate specialist cameras, eg thermal imaging. Power over Ethernet Finding a suitable power source near the camera installation can often be more difficult than finding a suitable network connection. Most of the cameras in our range can be powered using Power over Ethernet (PoE). This is an approved standard (802.3af) which allows low-power devices such as cameras to be powered directly from a standard CAT-5 network cable. We can supply matched pairs for one-off installations or PoE hubs, switches and splitters for multiple installations. Broadband Our network cameras can work over a standard Broadband connection, so that if you have more than one site you can incorporate cameras from the remote site into the managed system, enabling them to be recorded and viewed centrally. Subject to security, ViewCommander can make specified cameras available on the broadband connection so that they can be viewed externally or even on a live web site.

CCTV System