Component Video

Component Video, colloquially known mostly short Component or Komponenten-Ein-/Ausgang is used, inter alia, for the transmission of the video signal of HDTV receivers or DVD players to the appropriate display devices ( monitors or projectors). At this time, as opposed to older, formerly used exclusively in the professional field variations at today, used to home theater devices variant of Component Video YUV variant not transferred, but only YPbPr color-coded video data.

YPbPr is the original analog version of the digital YCbCr, are color-coded with inter alia stored on the DVD as well as transmitted in DVB via satellite, cable or antenna video data. Since the conversion from the digital YCbCr carried into analog YPbPr without translation -related loss of information, Component provides video in the analog transmission variants besides Progressive RGB most appropriate analogue connection and waveform for transmission of video data from the DVD player or DVB receiver dar. to the display unit

The used for component video YPbPr signal consists of the brightness signal " Y" and the color difference signals "Pb " for the deviation of gray on a blue-yellow scale and "Pr" for the deviation of gray on a red- turquoise - scale. The synchronization signal does not need a line, but is in the brightness signal " Y" included.

Port and plug versions

Most often, and especially in the home theater section, the signal on three separate RCA cable is transmitted in high quality systems, BNC. It is also possible to transfer the component video signals instead of the RGB signals using a SCART connector; Devices that are capable of doing, have i.d.R. a choice in their settings menu. In modern computer graphics card is a component video as "S- Video" or " TV Out" designated 9 -pin mini- DIN connector provided. Typically, these cards with an adapter for RCA Component, Composite RCA and 4 -pin S-Video. Alternatively, there may be a 7 -pin mini- DIN connector, this connector also provides in addition to the S-Video signals in some cases YPbPr. Here, the 4-pin S-Video plug will fit into the seven-way clutch. However, since this mini-DIN connection options conform to a standard, one should not assume that there Component signals are also output in any case.

The component video connection only transfers video data. Due to the available transmission capacity, it is possible with the analog interface to transmit resolutions up to 1080p. Often, however, it is no longer permitted under the pretext of copy protection measures to transport video signals unprotected in such a high quality, one is forced for higher HD resolutions, to use the encryptable digital interface HDMI.

A tapping the analog, uncompressed component video streams would in any case no longer practical, as there is over " defective " devices the ability to obtain an unencrypted HD signal. A decoding of the HD signal has been substantially simplified least through becoming aware of the HDCP master key.

Compared to YUV

Component Video is a relatively new variant of the transmission of video data, the previous transmission variants Composite Video ( CVBS) and S-Video separates the part - ie For reception, recording and playback using internal instead of YUV ( PAL ) or YIQ color-coded ( for NTSC ) analog method now YCbCr color-coded digital procedure. Nevertheless, the component video signal in various screen menus and test reports is often incorrectly referred to as YUV.

Compared to RGB video

Contrary to expectations, in part sparked Component Video RGB signal for the video recording and television broadcasting in the analog domain not, as this would be more burdensome. For technical reasons, the display is controlled on screens and projectors exclusively by means of RGB signals (structure of the displayed image of red, green and blue color components ). These are calculated (digital devices such as DVD -Video or DVB- TV ) or YPbPr ( component analog video cable ) from YCbCr, either already in Empfangs-/Abspielgerät ( so that the video data, such as via HDMI or DVI, already are RGB - encoded transmitted to the display unit ) or only in the display device itself (so that even YCbCr is transmitted via HDMI or about i.Link, or YPbPr via component video ).