A Guide To Dvi Cables

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Digital Visual Interface, cables usually known as DVI cables, were designed to offer very high visual quality for digital display screens including flat-panel LCD screens and digital projectors.

Developed by an industry consortium called the Digital Display Working Group, these cables are the next step up from analogue VGA cables and carry uncompressed digital video data between computers and displays.

Because data is transmitted as binary information rather than an analogue signal, there is no interference with the appearance of each pixel, giving better clarity and higher overall quality.

The maximum length that a Digital Video Display cable can send information without loss is dependent on bandwidth requirements so there is no standard specification. Generally, cables up to 4.5m long will work for display resolutions up to 1920 x 1200. Up to 15m long, DVI cables are available for resolutions to 1280 x 1024, sufficient for most home uses. If a longer DVI cable is needed to connect a computer and screen, DVI boosters can be used to reduce signal degradation and ensure a clear picture.

Types of Digital Video Display cables

There are three main types of DVI cable. DVI-D is the digital form, DVI-A the analogue version and DVI-I the integrated cable.

DVI-D cables are the standard ones used to connect a computer to monitor and DVI-A are used to hook up a DVI input to VGA monitor, a less common piece of kit.

DVI-I cables can transmit both digital and analogue signals but not both at the same time. This is ideal if purchasing a DVI cable for use with different screens.

The benefits of DVI cables

DVI cables are an improvement over VGA cables because the signal is transmitted digitally, meaning no conversion to and from analogue is needed and so no synchronisation is required. This reduces the likelihood of signal loss or distortion, giving a clearer picture and faster display transfer.

DVI cables are one of the most common leads used on desktop computers and LCD monitors, although the highest supported resolution will depend on the type of connector and port.

They can be used to connect to an HDMI port through the use of a digital converter, although a separate audio cable will be required.

Furthermore, DVI cables are backwards and forward compatible, making them one of the most versatile leads for consumer electronics connections.


About the Author:
The author has experience in DVI Cables and DVI Cable and DVI Cable



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