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HDMI Cable
HDMI (High-Definition Multimedia Interface)
is a compact audio/video interface cable for transmitting uncompressed digital data.
Broadcast Component (Y, R-Y, B-Y)
Component video consists of three signals.
1. Luminance - Y
The first is the
luminance signal, which indicates brightness or black & white
information that is contained in the original RGB signal. It is
referred to as the "Y" component.
2. R-Y or I and
2. B-Y or Q
The second and third signals are
called "color difference" signals which indicate how much blue and
red there is, relative to luminance.
The blue component is "B-Y" and
the red component is "R-Y".
The color difference signals are
mathematical derivatives of the RGB signal.
3. A component signal requires 3 cables. The connectors are usually BNC.
4. 15.75 KHz , 60 Hz
Consumer Component (Y,Cb,Cr / P,Pr,Pb)
Both Y,Cb,Cr and P,Pr,Pb (a British version) encode RGB information for digital video.
They work the same way as Broadcast Component,
separating out a higher resolution luma signal (Y or P), and two chroma components (Cb and Cr or Pr and Pb),compressed to save bandwidth.
The three connectors are usually RCA.
S-Video (Y/C)
1. Luminance - Y - Black and white picture information (.30R + .59G + .11 B).
2. R-Y & B-Y (Red minus luminance and Blue minus luminance) are encoded into I & Q and combined to form the Chroma or color information.
Composite
BNC or RCA Connector carries:
1. Luminance - Y (picture black and white information)
2. R-Y & B-Y (Red minus luminance and Blue minus luminance) encoded into I & Q, combined and then modulated 90 degree’s out of phase with each other
on a 3.58 Mhz. sub-carrier.
3. 480 lines of active video
Computer Cables
1. VGA
2. DVI – D/I: designed to carry uncompressed digital video data to a display.
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