Sunday, December 20, 2015

VGA port or DVI? The advantages and disadvantages of both variants

VGA port or DVI? The advantages and disadvantages of both variants

VGA and DVI. Between a VGA port and a DVI connector, there are a few differences that contribute to the functionality and usability of both variants. The DVI connector is called the innovation of the VGA connector and has a crucial, additional function.

For a VGA port, you also need the right cable - best the short one!
Both VGA and DVI interfaces are, work on the video and image transmissions. Both systems have some special features and characteristics. To understand the differences between the two systems, a little technical understanding is necessary.

The special features of a VGA connector
  • Introduced in 1987 by IBM
  • VGA stands for Video Graphics Array
  • Maximum 1920 x 1200 pixels can be transmitted from VGA
  • VGA was for about 20 years standard for image and video transfer of screens
  • On monitors, projectors, televisions and VGA graphics card is still widespread
  • With a VGA port only analogue, do not transmit digital signals
  • Long cables or other sources of interference, therefore, result in a loss of quality

The peculiarities of a DVI port
  • Often referred to as VGA successor
  • With DVI to digital (DVD-D) and analog (DVD-A) or even both signals (DVD-I) are transferred
  • The transmission of two digital signals is possible, so twice 1920 x 1200 pixels can be transmitted
  • DVI is compatible with both VGA inputs as well as HDMI, which makes it widely
  • It transfers as well as VGA only image, resulting in HDMI, which transmits digital and multimedia, increasingly permeated
  • The copy of HD Blu Rays or DVDs prohibit playback of such content via analog outputs as with a VGA port or the DVI analog connection. HDMI or DVI digital transmission paths are necessary for it

Which port is better?
A VGA connector can be seen thanks to the standard VGA connector to the blue jack on the device. They are mostly found on HD TVs or PCs, whereas laptops either Mini-VGA ports or HDMI ports have (on newer models). DVI ports sit through more and more, because it just about the possibility to transmit digital signals. Basically, they are now regarded as a better alternative to a VGA port, but especially older monitor, PC or TV models are not yet equipped with the new, more modern ports.

Especially older devices generally have always a VGA port
Must therefore be still resorted to a VGA cable to transfer from older devices image or video data. It is important that this cable, if possible, is relatively short, in order to minimize transmission errors. If it is a newer device, rather a DVI port or better yet an HDMI source is recommended. Data is transmitted just clean.

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