Krell Industries DVD Player Video Technology, Video Signal Options Building The Video Picture

Definition of Terms, continued

Video Technology

VIDEO SIGNAL

OPTIONS

BUILDING THE VIDEO PICTURE

Video Signal

A signal which includes all the information present in the video pic- ture. There are three basic elements in a video picture: color, bright- ness, and synchronization data.

Chrominance (C or Chroma). The color portion of a video

signal.

Luminance (Y, Brightness, or Luma). The monochrome

portion of a video signal.

Component Video Signal (3 Signals)

Three separate signals transmit: luma (Y), blue minus luma (B-Y), and red minus luma (R-Y), resulting in a high quality, film-like picture.

YPbPr (or PrPbY). One way to designate the three signals used in component video. Y = the luma signal, Pb = the blue minus luma (B-Y) chroma signal, and Pr = the red minus luma (R-Y) chroma signal.

S-Video Signal (2 Signals)

Two separate signals transmit the luma (Y) and chroma (C). S-video signals bypass television circuitry required by composite video, and reduces video noise as well as cross-contamination of luma and chroma signals.

Composite Video Signal (1 Signal)

One signal transmits luma (Y) chroma (color), and synchronization data.

Interlaced (standard) signals build the video picture in two passes.

Progressive signals build the video picture in one pass. This tech- nology eliminates motion artifacts and produces film-quality pictures. Both the video source and television must be equipped with progres- sive video connections.

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