Component Video
Component video uses a three-stranded cable to carry an analog signal, with each strand
terminating in a separate RCA connector. Each strand carries a different component of
the video signal??”hence the name. Figure 12-4 shows a component video cable.
DVI port DVI connector
Figure 12-2
DVI gives a high-quality
signal, but you are more
likely to find a DVI port
on a projector than on
a TV.
VGA connector VGA port
Figure 12-3
VGA uses a D-sub
connection that has
15 pins.
Figure 12-4
Component video uses
three RCA connectors
at the ends.
caution
126 Part II: Intermediate
S-Video
An S-Video cable uses a two-stranded cable to carry an analog video signal. The cable
terminates in a single connector, making for an easy connection. Figure 12-5 shows an
S-Video port and connector.
S-Video port S-Video connector
Figure 12-5
An S-Video cable uses
a single connector, so
it??™s easy to connect.
Figure 12-6
When you use a
composite cable (left)
to carry a video signal,
you also need to use
another cable (such as
the RCA cable shown
on the right) to carry
the audio signal.
RCA/Composite Video
A composite cable carries the entire video signal on a single cable. Image quality
suffers, so make a composite cable your last choice??”the one you use only if none of
the other connection types is available. The composite cable carries only the video,
so you??™ll also need to use an RCA cable to carry the audio from the PC to the TV or
projector.
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