RGB stands for Red, Green and Blue. In the domestic source, a synchronization signal is also required which is present on the composite line. It is a high quality video signal carried by the Scart cable.
. These colors represent the pictures in a TV. So, there is no possibility of any interference between them.
The second type of signal is S-Video signal. This signal is similar to S-Video and is the high quality video interference. This signal Cable connector carried by the Scart cable has luminance and chrominance signals mixed with it. It is a bi-directional connector as far as standard composite video and analog audio signals are concerned. Such mixed signals are produced by VHS VCR equipment. It has luminance and chrominance signals in the same way as the composite signals but, these are two separate signals.Nowadays, Scart has become the common connector for audio and visual equipment in Europe and a standard connector for many applications.
The next type of signal is the RGB signal carried by the Scart cable. Scart helps the device to command a TV set to switch between the signals in order to overlay in the TV picture VGA cable image. As Scart is a bi-directional, it is used for a Pay TV and in the earlier days, was used to decode a tele-text. The interference is caused by the mixing of these signals due to which its quality gets lower.
The first one is the composite signals which have the lowest quality.
Scart cable carries various types of signals