Video interfaces connect the monitor to the Image decoding device.
Concerns over image quality and video protection has led to significant
changes in display interface technology gradually. Although the VGA
interface is still used in PCs, the future is moving to digital
interfaces. Various methods including analog connector, hybrid digital
plus analog interfaces and several digital interfaces have been
developed up to now. However, there is some overlap in the features of
display interfaces. We study several practical analog and digital video
interfaces.
Analog display interfaces
S-video
S-video, standing for Separate Video, transmits video signals over a
cable by dividing into two separate signals: one for color and another
for brightness. Due to this separation, sharper and higher quality
images than composite video can be achieved. S-video does not carry
audio, so it commonly run with red and white RCA audio cables.
Component video
This video interface is superior over both composite and S-video.
Because its three cables better preserve the various elements of the
video signal including brightness and color, resulting in enhanced
picture quality. Component video uses three RCA connections, Red, Blue
and Green to send video signals. It carries visual data only, meaning
that audio cables are still required. Hence, it is usually paired with
stereo (red and white) RCA audio connections.
VGA
VGA or Video Graphics Array is the most popular video connection between
computers and monitors. It is used on computer video cards, projectors
and set top boxes. A standard VGA connection has 15 pins and supports
display resolution of 640*480 pixels, while enhanced version SVGA
is allowed for resolution of 1024*768. It is worth mentioning that the
maximum resolution is limited by the connector bandwidth and cable
quality and length.
In the VGA connector, due to tiny little pins into a small connector,DisplayPort is a newer connector can be found on Apple's iMac desktops. It is compatible with HDMI signals, thus product interoperability is achieved. The HDMI and DisplayPort both carry audio and video data on a same cable. They also support High-bandwidth Digital Content Protection (HDCP) to encrypt copyrighted video and audio data for the newest HD content. , are studied. http://redleafsecurity.net/product.php?product=RLN1664U-MF. Article Source: http://EzineArticles.com/expert/Maya_Avery/2251268 Article Source: http://EzineArticles.com/9343968