DVI (Digital Visual Interface) is a
digital video interface developed by the Digital Display
Working Group (DDWG). It is able to support both digital
and analogue video signals over a single DVI cable and
is commonly found on computers, LCD monitors, projectors
and other digital display equipment. |
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What
does the cable look like? |
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A DVI cable looks like this.
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What does the connector on the
device look like?
A DVI connector on your device looks like this.
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What are the advantages of DVI?
Traditional CRT (Cathode Ray Tube)
displays use an analogue signal to receive image
data from the computer's graphics card. For this
reason, early graphics cards needed to convert
their native digital signal into analogue in
order to support CRT monitors.
LCD monitors are digital display
devices, but when they were first introduced
they needed to be able to accept and adapt this
analogue signal to ensure compatibility with the
majority of available computers. In order for
the LCD to accept the computer's analogue
output, the signal had to be reconverted to
digital.
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When should I use it?
Since both the computer and the LCD
digital monitor accept and transmit digital
signals, the process of translating digital to
analogue is fundamentally unnecessary. The DVI
digital connection removes this digital -
analogue - digital conversion process, and so
removes inaccuracies and information loss due to
each conversion process.
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| The DVI
interface has proven to be extremely versatile;
it provides manufacturers with the flexibility
to support digital devices while remaining
backwards compatible with analogue devices. |
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DVI-I Single Link - this
connection incorporates both the digital and analogue
signals in a single DVI cable. This means the cable can
send a digital-to-digital or an analogue-to-analogue
signal (for use with an analogue display). Click the
link to see our DVI-I Single Link cables.
DVI-I Dual Link - similar to DVI-I Single Link, but with a second data
link for higher resolutions. This DVI lead connection
incorporates both the digital and analogue signals in a
single cable. This means the cable can send a
digital-to-digital or an analogue-to-analogue signal.
Click the link to see our DVI-I Dual Link cables.
DVI-D Single Link – this Digital only connection supports digital only
displays with screen - this digital only connection
supports displays with screen resolutions of up to 1920
x 1080 and 1080p. You can see our range of DVI-D Single
Link cables by clicking on the following links: DVI-D
Dual Link - this connection uses a second data link and
supports much higher resolutions such as 2048 x 1536 (QXGA).
We supply a range of dual link DVI cables including DVI-D
Dual Link,
DVI-A, Analogue - this
rarely used cable connects only the analogue RGB
signals. |
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