Also known as: DVI-I, DVI-D, DVI-A

The DVI interface uses a digital signal in which the desired illumination of pixels is transmitted as binary data. When the display is driven at its native resolution, it will read each number and apply that brightness to the appropriate pixel. In this way, each pixel from the source device corresponds directly to one pixel in the display device, whereas with an analog signal the appearance of each pixel may be affected by its adjacent pixels as well as by electrical noise and other forms of analog distortion.

The DVI connector on a device is given one of three names, depending on which signals it implements:

• DVI-D (digital only)
• DVI-A (analog only)
• DVI-I (integrated, digital & analog)

Also known as: YPbPr, YCbCr

Component video is a video signal that has been split into two or more components. These components are referred to as luma and chroma and are defined as Y'Pb'Pr' for analog component and Y'Cb'Cr' for digital component
In popular use, it refers to the YPbPr analog video information that is transmitted or stored as three separate signals:

• Y carries luma (brightness) information.
• P B carries the difference between blue and luma
• P R carries the difference between red and luma

The result is a better picture quality

Also known as: S-VGA, 15pin D-Sub, RGB

VGA connectors and their associated cabling are almost always used solely to carry analog component RGBHV (red - green - blue - horizontal sync - vertical sync) video signals along with DDC2 digital clock and data.
Most commonly found on personal computers, they are used to connect a monitor, projector or plasma / LCD screen to the source.

Also known as: S-VHS, Y/C, mini DIN

Separate video , abbreviated S-Video is an analog video signal that carries the video data as two separate signals, luma (brightness) and chroma (colour), unlike composite video , which carries (lower-quality) picture information as a single signal, or component video , which carries (higher-quality) picture information as three separate signals, typically luma and two chroma components.
S-Video, as most commonly implemented, carries 480i or 576i resolution video, i.e. standard definition video.

Also known as: CVBS, YUV

Composite video is an analog (picture only) signal before it is combined with a sound signal.
Composite video is often designated by the CVBS acronym, meaning any of "Color , Video , Blank and Sync", "Composite Video Baseband Signal", "Composite Video Burst Signal", or "Composite Video with Burst and Sync".
It is a composite of three source signals called Y, U and V (together referred to as YUV ) with sync pulses. Y represents the brightness or luminance of the picture and includes synchronizing pulses, so that by itself it could be displayed as a monochrome picture. U and V between them carry the color information. They are first mixed with a color carrier signal to form a signal called the chrominance. Y and UV are then combined.

It is the most common video connection available on projectors and plasma / LCD screens but also the lowest quality signal.
They are usually colour coded with Yellow for video, and Red for right audio, and White for left audio.

Also known as: Péritel, 21 pin EuroSCART, Euroconnector

SCART makes it easy to connect AV equipment (including TVs , VCRs , DVD players and game consoles). It gathers together various common analog signal types into a single connector. The signals carried by SCART include both composite and RGB (with composite synchronisation) video , stereo audio input/output and digital signalling. The standard was extended at the end of the 1980s to support the new S-Video signals .