whaits - S-video

[The Law]

For those that care (and don't yet know this stuff) I received this from whatis.com today:

S-Video (Super-Video, sometimes referred to as Y/C Video, or
component video) is a video signal transmission in which the
luminance signal and the chrominance signal are transmitted
separately to achieve superior picture clarity. The luminance signal
(Y) carries brightness information, which defines the black and white
portion, and the chrominance signal (C) carries color information,
which defines hue and saturation. Composite video, the way that video
signals have traditionally been transmitted, sends both (along with
synchronization data) as one signal.

Television sets are actually designed to display luminance and
chrominance signals separately. Composite signals must be separated
before they can be displayed. When the signals are sent as a
composite, they overlap at a frequency range above 2.1 megahertz
(MHz). The overlapping areas are difficult to separate entirely, and
the remnants of either signal within the other creates video errors.
Vestiges of chrominance data remaining in the luminance data cause a
cross-luminance effect that creates a dot structure pattern (this is
sometimes referred to as "dot crawl"), and vestiges of luminance data
remaining in the chrominance data create "rainbow" effects in
detailed patterns called "cross-color". Sending the signals
separately, as in S-Video, circumvents this error-prone process.

[kjnorman]

Well I don't think much of Whatis.com

S-Video (Super-Video, sometimes referred to as Y/C Video, or component video

S-Video is NOT component.  Way different things...

[The Law]

That's what I though too...but figured I was wrong.

[kjnorman]

Here's the definition of component video from Video Essentials.

Component Video
In producing a color picture from light, our color television system starts out with three channels of information; Red, Green, & Blue (RGB). This is certainly one form of component video. In the process of translating these channels for use in distribution, they are often first converted to Y, B-Y, and R-Y or Y Pb Pr. This is another form of component video. The term component describes a number of elements that are needed to make up the picture. It could be argued that an S video signal is also a component signal. A composite video signal on the other had contains all the information needed for the color picture in a single channel of information. Much higher program production quality is possible in the component domain because analog compression is used to place the three channels of component information into the single channel of composite information. Once that compression take place it is extremely difficult to get back the original quality of the component signal.

It is interesting that they say that s-video could be described as component video, so perhaps I should not be so hard on Whatis.com, but the bottom line is that today, component video is regarded as a three channel video source, not two.