True Day Night security cameras are cameras that contain an IR cut filter (IRC), the CCD sensors on these cameras are sensitive to both IR light radiation and physical light. During the day when you have plenty of physical light, the IR cut filter slides in front of the sensor, blocking the IR light radiation, […]

Digitally adjusting exposure in areas of the frame to maintain optimum detail in both the shadows and highlights of the image. Examples:  

VPN stands for Virtual Private Network. It creates a secure connection between an individual computer or private network to another private network, over a public network such as the internet. A VPN maintains security by authenticating users and using encryption, among other things. Data is encrypted before it is sent and it is decrypted after […]

Defined: Ultra-high-definition television (also known as Ultra HD television, UltraHD, UHDTV, or UHD) includes 4K UHD (2160p) and 8K UHD (4320p), which are two digital video formats.   What the Difference between High Definition and Ultra HD? The Difference between these technologies resides in overall pixel count with HD 1080p resolution containing just over 2 […]

Analog surveillance video resolution is measured in terms of broadcast TV lines as viewed on a monitor screen. Video quality is charted with converging lines of higher and higher density. The TVL resolution number is the line density where the camera is no longer able to reproduce individual lines. The higher this number is, the […]

Sometimes also called HLC (High Light Compensation), SLR is the masking of a very intense light source such as car headlights in order to bring up detail in the normally lit areas, such as a license plate or face.

A camera function allowing the user to select a slower shutter speed in order to let extra light into a camera. This provides higher sensitivity in low light conditions and may eliminate the need for artificial light.

The resolution of a surveillance camera’s image is measured in the number of pixels contained in the image. The higher the number of pixels, the more detail in the image. Higher resolution images give you the ability to zoom into the image to see fine detail. Typical Resolutions VGA: 640 x 480 D1: 720 x […]

DVRs that display and record at the full frame rate of 30 fps per channel of video are called “real time.” Many DVRs do not have the processing capability to record in real-time. They record only intermittent frames coming from the camera. A full frame rate produces the smoothest, clearest picture. A DVR usually specifies […]

The feature of providing both data and power over the one ethernet cable, eliminating the need for a separate power cable.

A passive infrared sensor is often used in motion detectors. Motion is detected when an infrared source with one temperature, such as a human, passes in front of an infrared source with another temperature, such as a wall. The sensor does not dectect the “heat” from the object passing in front of it. Instead it […]

Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or work loads between peers. Peers are equally privileged, equipotent participants in the application. They are said to form a peer-to-peer network of nodes. Peers make a portion of their resources, such as processing power, disk storage or network bandwidth, directly available to […]

A menu system that displays visually on an display panel or monitor screen. Example:

Multi-streaming means that your device outputs two or more types of video streams, with different properties, to different users or devices. It allows a user to get video in a different resolution, frame rate, or compression type to meet requirements of quality, storage constraints, bandwidth, or CPU usage. The property differences could be Compression type […]

A MegaPixel is one million pixels, and is commonly used to indicate the resolution of an HD surveillance camera. A pixel is a tiny square in a digital image. The image is actually a grid of these pixels. If you greatly enlarge a digital image, you can actually see the pixels (pictured below).   The […]

In most cases, the Ingress Protection Rating consists of the letters IP followed by two digits. I P [Solid Particle Protection] [Liquid Ingress Protection] Solid Particle Protection IP Rating Protected from Notes 0 — No protection against contact and ingress of objects 1 Objects >50 mm Any large surface of the body, such as the […]

The IR cut filter is on when the camera is operating as a color camera for precise color reproduction. With ICR, the filter is removed which allows for much greater light sensitivity in monochrome mode.

Hot Swap is the replacement of a HDD hard drive, CD-ROM, power supply, or other similar device while the CCTV or computer system remain in operation. Examples: You would Hot Swap a hard drive for new one in cases where the hard drive stoarge is full. You would Hot Swap a power supply in the […]

Definition: HDCVI High Definition Composite Video Interface HDCVI has emerged as a solution to bring traditional analog surveillance systems into the world of high definition. The Idea is to have a solid state transmission without worrying about network lag, like in IP, and to bring long distance transmission while maintaining 1080p high definition imagery. HDCVI technology […]

To satisfy a growing need for higher coding efficiencies for standard definition TV and video transmissions over low data rate channels, in the early 2000’s H.264/ MPEG-AVC standard was developed. During the late 2000’s H.264 entered into additional developing efforts to further improve the coding efficiency as well as integrate functionalities and features in to […]

H.264 is a standard for video compression and is currently one of the most commonly used formats for the recording, compression, and distribution of high definition video. The H.264 standard has 21 sets of capabilities called profiles, including the following used by eLine Technology surveillance systems: Baseline Profile (BP) Primarily for low-cost applications that require […]

JOULE: One joule (symbol: J) is defined as the amount of work done by electricity. Technically, it is the work required to continuously produce one watt of power for one second; or one watt second (W*s). One kilowatt hour (a common electric company measure) equals 3,600,000 Joules (1W*s x 1,000 x 3600 seconds). Using This […]

Sony’s “Effio” Series realizes a horizontal resolution of over 650 TVL in combination with Sony’s newly developed 960H CCD image sensor. This enables to provide clearer pictures with higher sensitivity compared to conventional CCTV cameras. Item “Effio-P” “Effio-S” Enhanced “Effio-E” Product name CXD4129GG CXD4130GG CXD4140GG Supported CCDs 960H, 760H WDR/Normal CCDs 960H, 760H Normal CCDs […]

Cameras with dual voltage options to accept either 24V AC or 12V DC power sources and will automatically switch to the appropriate mode upon receiving power.

Image noise is interference in the video signal that shows up as grainy specks. It can be caused by low lighting situations, a nearby power interference, heat, or device algorithms.

Digital image stabilization (DIS) compares video data from recorded images to detect shaking camera movement, most often from wind. The camera creates a pixel buffer by recording extra pixels outside of the visible frame. When the camera vibrates or shakes, the camera shifts the visible frame to reduce the jarring effect on the video image.

Demist defined is a surveillance camera function that digitally sharpens video which is being degradated from fog, rain, snow, haze, sand storm, or dust on your lens.

A Day/Night function helps the camera adapt to low lighting conditions on cameras that are not equipped with Infrared illuminators. The Day/Night function can be done by using a mechanical cut filter (sometimes called an IR cut filter or ICR) and/or by using dual imagers (one color, one black & white). See also Infrared Cutfilter […]

In images where a bright light source is behind the subject of interest, the subject would normally appear in silhouette. BLC allows the camera to adjust the exposure of the entire image to properly expose the subject in the foreground. WDR is a more effective alternative to BLC because it handles multiple exposure zones to […]

Sony’s ATR/ATR-EX (Adaptive Tone Reproduction) function provides gradation compensation to improve the contrast of subjects whose gradation has been lost in cases where, for instance, both low-luminance areas and high-luminance areas exist in the same picture. The ATR function improves the visibility of the entire picture by providing the optimum gradation compensation for the image […]