In addition to the red, green and blue color signals, RGB requires two additional signals to synchronize the video display. All arcade video games, other than early vector and black-and-white games, use RGB monitors. Many televisions, especially in Europe, can utilize RGB via the SCART connector. Early personal computers such as the IBM PS/2 offered this signal via a VGA port. The various RGB (red, green, blue) analog component video standards (e.g., RGBS, RGBHV, RGsB) use no compression and impose no real limit on color depth or resolution, but require large bandwidth to carry the signal and contain a lot of redundant data since each channel typically includes much of the same black-and-white image. RGB analog component video A 15-pin VGA connector for a personal computer A 21-pin SCART or JP21 connector for a television Typical formats are 480i (480 lines visible, 525 full for NTSC) and 576i (576 lines visible, 625 full for PAL). For most consumer-level video applications, the common three-cable system using BNC or RCA connectors analog component video was used. S-Video, RGB and YP BP R signals comprise two or more separate signals, and thus are all component-video signals. A signal separated in this way is called "component video". One way of maintaining signal clarity is by separating the components of a video signal so that they do not interfere with each other. DVD, VHS, computers and video game consoles all store, process and transmit video signals using different methods, and often each will provide more than one signal option. Reproducing a video signal on a display device (for example, a cathode ray tube CRT) is a straightforward process complicated by the multitude of signal sources. YPbPr component video can be losslessly converted to the RGB signal that internally drives the monitor the encoding is useful as the Y signal will also work on black and white monitors. Component video cables and their RCA jack connectors on equipment are normally color-coded red, green and blue, although the signal is not in RGB. When used without any other qualifications, the term component video usually refers to analog YP BP R component video with sync on luma (Y) found on analog high-definition televisions and associated equipment from the 1990s through the 2000s when they were largely replaced with HDMI and other all-digital standards. Like composite, component cables do not carry audio and are often paired with audio cables. Component video can be contrasted with composite video in which all the video information is combined into a single signal that is used in analog television. In popular use, it refers to a type of component analog video (CAV) information that is transmitted or stored as three separate signals. Video signal that has been split into component channels Three cables, each with RCA plugs at both ends, are often used to carry YPbPr analog component video.Ĭomponent video is an analog video signal that has been split into two or more component channels.
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