network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device.

HD CCTV allows HD quality using exsiting cabling and intrastructure. This use existing Co-Ax Cabling...

An Internet protocol camera, or IP camera, is a type of digital video camera commonly...

In television production, PTZ controls are used with professional video cameras in television studios and referred to as camera robotics. These systems can be remotely controlled by automation systems. The PTZ controls are generally sold separately without the cameras.

Television lines (TVL) is a specification of an analog camera's or monitors's horizontal resolution power. It is alternatively known as Lines of Horizontal Resolution (LoHR) or lines of resolution. 

The TVL is one of the most important resolution measures in a video system. The TVL can be measured with the standard EIA-1956 resolution chart.

CCTV Video Resolutions Format The table below lists some of the more commonly used resolution terms in CCTV applications. Any resolution over 1 million pixels is considered 'megapixel'. In the case of megapixel cameras, the labels are approximate.

Understanding lenses Selecting the most appropriate lens from installation can be a complex task...

balun is an electrical device that converts between a balanced signal (two signals working against each other where ground is irrelevant) and an unbalanced signal (a single signal working against ground or pseudo-ground). 

In digital imaging, a pixelpel, or picture element is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen.

DVR 960H represents the number of effective pixels in the horizontal direction...

LILIN day/night 4K Ultra HD (UHD) Auto Focus IP camera with a weather-proof sleek...

What is a P2P IP camera and how does it work? With HD P2P cameras use a smartphone...

Star light mode is a function that a CCD camera is able to see clear color images...