12 Sep 2012

Intersil Expands Video Surveillance Capabilities

Analogue and mixed signal semiconductor company, Intersil Corporation has launched an expansion to its Techwell SLOC™ (Security Link Over Coax) ecosystem.

With many security camera systems using older analogue systems, there is a need to migrate to IP based data systems to provide considerably more flexibility and functionality. Analogue often provides very low quality images, and using coax based systems often used, the distances to be covered can be a challenge. However more modern IP based systems can introduce latency, both in terms of operation of factors such as pan, tilt and zoom and then the returned video.

While IP based systems provide many advantages, they may also require a complete re-installation of the cabling and this can result in significant costs. To ensure that these costs can be kept to a minimum, the Techwell SLOC system utilises the existing coax cabling, transmitting both IP and analogue signals, thereby saving significant costs in the cabling. This enables transmission in both directions for the video the outgoing commands. It also enables tracking of the image to be undertaken using the low latency analogue signal, while taking advantage of the higher quality provided by the IP signal.

SLOC Development

To achieve the new system, Intersil has worked closely with a number of other companies who are leaders in the field of CCTV and surveillance.

Expanding SLOC technology brings the technology’s various benefits to a wide range of systems and applications. Intersil has joined forces with nearly 100 global companies, including manufacturers and other companies such as Sony, Altronix, and Hikvision, to create a standardisation and system awareness for the SLOC ecosystem, and to accelerate the global adoption and implementation of hybrid IP-based security systems for the video surveillance market.

SLOC for Security

System integrators and manufacturers can now architect an efficient hybrid surveillance system that addresses all of the technical barriers, while enabling all of the benefits of IP networked cameras and network analytics. Intersil’s SLOC is an innovative modem physical layer technology that enables high resolution mega-pixel and HD IP-based cameras to operate within the existing analogue CCTV coaxial cable infrastructure without the need for new cabling. SLOC consists of a camera transmitter and a DVR/NVR receiver, a combination that enables high-performance and robust bidirectional communication between the camera and the video recorder over long cable runs.

The system is able to support distances up to 500m of coaxial cabling and in this way analogue repeaters are not needed. Typically runs of more than 500 metres are rarely required.

The system also provides a straightforward and low cost upgrade path from the older analogue quality video surveillance solutions to HD and Mega-pixel resolutions capable of giving face and number plate recognition. The system also enables digital IP camera functionality to be introduced onto systems using existing coaxial wiring infrastructure with no disruption of existing CCTV services.

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