What is the color difference component input in liquid crystal display

Color difference component input is a way to display signal input using color difference component port.

Color Difference Port

At present, in some professional video workstation/editing card professional-grade video equipment or high-end DVD players and other appliances on the see there are YUV, YcbCr, y/b-y/b-y and other signs of the interface identification, although its labeling methods and connectors are different shapes but all refer to the same interface-color difference port (also known as Component Video interface). It usually adopts the YPBPR and ycbcr two kinds of identification, the former indicates the line-by-row scanning color difference output, the latter means the interlaced scanning chromatic aberration output. By the above relationship, we only need to know y CR CB value can get the value of g (that is, the fourth equation is not necessary), so in the video output and color processing in the unified ignore the green difference CG, and only keep Y Cr CB, this is the basic definition of color difference output.

Color Difference Terminal

The color difference terminal is based on the S terminal, the chroma (C) signal in the blue difference (b), Red difference (R) sent separately, its resolution can reach more than 600 lines. It usually adopts the YPBPR and ycbcr two kinds of identification, the former indicates the line-by-row scanning color difference output, the latter means the interlaced scanning chromatic aberration output. Now many TV products are based on color difference input to improve the quality of the input signal, and through the color difference terminals, you can enter a variety of levels of signals, from the most basic 480i to the frequency of the scanning of the 480p, or even 720p, 1080i and so on, are to pass the signal transmission to the television.

By the television signal relationship, we only need to know Y, Cr, Cb value can get g (green) value, so in the video output and color processing in the unified ignore the green difference CG and only keep y Cr Cb, this is the basic definition of color difference output. As an advanced product of S-video, the color difference output will decompose the chroma signal C of S-video to the color difference CR and CB, so as to avoid the process of two-way color mixed decoding and separation again, and maintain the maximum bandwidth of chroma channel, Only need to go through the inverse matrix decoding circuit can be restored to RGB three primary colors signal and imaging, which minimizes the video source to the display image video signal channel, to avoid the cumbersome transmission process caused by the image distortion, Therefore, the interface of color difference output is one of the best kinds of video output interfaces currently being simulated.