What Is The Full Form Of DVI?
The full form of DVI is Digital Visual Interface.
DVI is a form of video display interface that creates an industry standard for the transmission of digital video content into digital display devices. It connects the video source to a display device like a monitor. Such devices may also include flat-panel LCDs, projectors, computer display monitors, and more. One of the purposes behind its development was to replace the traditional VGA standard.
The DVI interface transmits uncompressed digital video, and one can configure it to support multiple modes like the DVI- D (only digital), DVI-A (only analog), or DVI-I (analog and digital). This specification is compatible with any VGA interface. And although you can predominantly associate DVI with computers, you can sometimes utilize it in other electronics for consumers, such as DVD players and TV sets as well.
History of DVI
- DDWG (Digital Display Working Group) designed DVI in the year 1999 for replacing the existing method of analog transmission used by VGA with the digital mode of transmission.
- It allowed DVI to help display hardware come up with more colors compared to the existing VGA technology. Projectors, computer monitors, etc. could now display better pigments.
Types of DVI Connectors
- DVI-I Single Link – It has three rows. Each of them consists of six pins and two contacts. Since the connector is integrated, you can use DVI-I single link with both digital and analog applications.
- DVI-I Dual Link – It has three rows. Each row consists of eight pins and two contacts. More pins are also present for accommodating a dual connection. You can use this link with both digital and analog applications.
- DVI-D Single Link – This one has three rows. Each row consists of six pins without any contact. One can use it only with digital applications.
- DVI-D Dual Link – It has three rows. Every row has eight pins without any contact. More pins are also present for accommodating a dual connection. One can use this link with digital applications only.
- DVI-A – This one has three rows. Out of all the rows, the first one has five pins, the second one has four, and the last row has three pins. It also has two contacts. But you can use it with analog applications only.
Proposed DVI Structures
- IEEE 1394 – Proposed as a combined data stream. But it is unsuitable for apps that need uncompressed HD video like interactive program guides and video games.
- HDMI – High-Definition Multimedia Interface is a forward-compatible standard that includes digital audio transmission.
- UDI – Intel proposed Unified Display Interface to replace both HDMI and DVI, but was disapproved later.
- DisplayPort – VESA proposed this license-free standard to succeed DVI that has optional DRM mechanisms.
- Thunderbolt – This interface has the same form factor as the Mini USB-C (in V3) or DisplayPort (in V1 and V2). But it combines PCIe and DP into one serial signal. It thus permits connecting PCIe devices along with video displays. The Thunderbolt interface provides DC power as well.
Benefits of DVI
- It transmits digital signals. So the info in the digital form doesn’t need to be converted. As a result, it reduces processing and leads to a better speed of transmission.
- VGA only transfers analog signals, but DVI can transmit both- analog and digital signals.
- It exhibits a strikingly better, sharper, and clearer picture quality as compared to the VGA.
- The connectors support resolutions up to 2560 x 1600 pixels for dual-link format and 1920 x 1200 pixels for single-link format.
- The connectors are Plug and Play. One need not restart the system like in VGA.
Limitations of DVI
- DVI is an older technology, and it supports a limited amount of resolution.
- Overall colour capacity is lesser than the successors.
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