MediaSonic MS9100P Guía de usuario Pagina 118

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HD Player Index
116 Rev. 6.4
difference components (Y, R-Y, B-Y) of a video signal. It is generally used as
shorthand for ITU-R 601. The term 4:2:2 describes that for every four samples
of Y, there are two samples each of R-Y and B-Y, giving more chrominance
bandwidth in relation to luminance compared to 4:1:1 sampling.
ITU-R 601, 4:2:2 is the standard for digital studio equipment and the terms
"4:2:2" and "601" are commonly (but technically incorrectly) used
synonymously. The sampling frequency of Y is 13.5 MHz and that of R-Y and
B-Y is each 6.75 MHz providing a maximum color bandwidth of 3.37 MHz-
enough for high-quality chromakeying. The format specifies eight bits of
resolution.
The details of the format are specified in the ITU-R BT.601-2 standard
document. See also: ITU-R BT.601-2.
4:4:4
Similar to 4:2:2, except that for every four luminance samples, the color
channels are also sampled four times
5.1
A type of surround sound. Six discrete audio channels are used: Left, Center,
Right, Left Rear (or side) Surround, Right Rear (or side) Surround, and a
subwoofer (considered the ".1" as it is limited in bandwidth).
See also: Dolby Digital.
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