Video Signals


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Table of Contents






Video Signals: The sound, image, or message transmitted or received in telegraphy, telephony, radio, television, or radar.
  • The way a video signal reaches your screen is by sweeping an electrical signal horizontally across the display screen one line at a time.

Composite Video: This is the transmitter that can connect to almost all video equiptment, such as television sets, DVD players and more.The information is usually sent throught cables also known as composite video cables that have plugs that connect to equiptment on each end. The composite video uses the three elements of a good video picture such as color, brightness, and synchronization data to produce a composite video signal for the viewer.

S-Video: This uses two different video signals. It's a composite signal that was split into two. With the luminance and chroma being extremely good, the video signal provides a better, sharper picture for viewers and gets rid of the granularity for a clear picture. If you compare a digital granularity to an analog granularity, it will show that the digital one clearly looks worse. Therefore, if the option is there, you should choose S-Video over a composite video for a better picture while viewing your movie.

Component Video: This is a newer transmitter that is an advancement of the composite video signals to S-Videos, and takes it to the next level. It seperates brightness from the color, and the color is seperated colors are found in red and blue. The component video uses a triple headed RCA cable to produce a sharper image than a composite video with less color bleeding than an S-Video, which makes it the newest advancement in video signals. These are usually used on newer DVD players, high end HDTV's, and modern TV's. Seeing a component video on TV sets and VCR's is almost impossible to see.




Devices With The Same Scientific Principle Include...


For further information, check out this page-
Electricity to Light
or..
http://www.datapro.net/videodoc.html