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〔Often written YPbPr and also referred to as ''Y/PB/PR'', ''YPRPB'', ''PRPBY'', ''PBPRY'', ''Y/Pb/Pr'', ''YPrPb'', ''PrPbY'', ''PbPrY'', ''Y/R-Y/B-Y'', ''Y(R-Y)(B-Y)'', ''Y, R-Y, B-Y''.〕 is a color space used in video electronics, in particular in reference to component video cables. is the analog version of the YCBCR color space; the two are numerically equivalent, but YPBPR is designed for use in analog systems whereas YCBCR is intended for digital video. cables are also commonly referred to as ''Yipper'' cables.〔(High-Def Terminology ) at Amazon.com〕 is commonly called "component video" by manufacturers, but this is imprecise, as there are many other types of component video, most of which are some form of RGB. Some video cards come with video-in video-out (VIVO) ports for connecting to component video devices. ==Technical details== is converted from the RGB video signal, which is split into three components: Y, PB, and PR. * Y carries luma (brightness or ''luminance'') and synchronization (sync) information. Y = 0.2126 R + 0.7152 G + 0.0722 B. Before the advent of color television, the Y axis on an oscilloscope display of a video waveform represented the intensity of the scan line. With color, Y still represents intensity but it is a composite of the component colors. * PB carries the difference between blue and luma (B − Y). * PR carries the difference between red and luma (R − Y). Sending a green signal would be redundant, as it can be derived using the blue, red and luma information. When color signals were first added to NTSC-encoded black and white video standard, the hue was represented by a phase shift of a color reference sub-carrier. P for phase information or phase shift has carried through to represent color information even in the case where there is no longer a phase shift used to represent hue. Thus, the Y PB PR nomenclature derives from engineering metrics developed for the NTSC color standard. The same cables can be used for and composite video. This means that the yellow, red, and white RCA connector cables commonly packaged with most audio/visual equipment can be used in place of the connectors, provided the end user is careful to keep track of the device functions (i.e., connect any one of the individual functions to the ''corresponding'' function on the other end using any cable color). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「YPbPr」の詳細全文を読む スポンサード リンク
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