Inputs
Composite monitors usually use RCA jacks or BNC connectors for video input. Earlier equipment (1970s) often used UHF connectors. Typically simple composite monitors give a picture inferior to other interfaces.
In principle a monitor can have one or several of multiple types of input, including composite—in addition to composite monitors as such, many monitors accept composite input amongst other standards. In practice computer monitors ceased to support composite input as other interfaces became predominant.
A composite monitor must have a two-dimensional approximately flat display device with circuitry to accept a composite signal with picture and synchronisation information, process it into monochrome chrominance and luminance, or the red, green, and blue of RGB, plus synchronisation pulses, and display it on a screen, which was predominantly a CRT until the 21st century, and then a thin panel using LCD or other technology.
A critical factor in the quality of this display is the type of encoding used in the TV camera to combine the signal together and the decoding used in the monitor to separate the signals back to RGB for display. Composite monitors can be very high quality, with professional broadcast reference displays costing US$10k-$15k as of 2000. Comb filters are frequently used to improve the quality of a composite monitor, and devices using Faroudja decoders are frequently considered the pinnacle of composite displays.
Read more about this topic: Composite Monitor