a b c Digital Visual Interface & TMDS Extensions (PDF) (Report). Silicon Image. October 2004 . Retrieved 31 January 2023. Video signals transmitted over DVI need no such conversion because they are digital-only. Consequently, picture quality is better. The difference may not be noticeable for text or even SD (standard definition) video but can be seen for HD videos and hi-resolution images or on hi-res displays. Find sources: "Digital Visual Interface"– news · newspapers · books · scholar · JSTOR ( May 2023) ( Learn how and when to remove this template message) Today's video technology is moving away from analog ( VGA (video graphics array)) for digital connection formats ( HDMI, DVI (digital visual interface), DisplayPort). However, you still need to change the display technologies, usually due to differing ports on a computer and display. Video signals may be adapted in either direction (from DVI to VGA and VGA to DVI), but there are certain limitations and expense differences. DVI to VGA You can also convert VGA to DVI because DVI supports analog signals too. Do remember that only DVI-I supports both analog and digital, DVI-D only works with digital, so you’ll need an active adapter to convert that to another type of connector.

DVI-I is the integrated format connector. It works with digital and analog equipment, acting as a DVI-D or DVI-A cable, but it won't convert pure DVI-D output to analog. DVI-I has two variations—single-link and dual-link—and has a 29-pin layout to accommodate multiple connections. However, DVI-D will require an active adapter, something like this one. The good news is DVI has a pink for +5V so these adapters can take the power they need directly from the device without needing an external power supply, like VGA to HDMI adapters need. Overall, converting DVI to other connector types is very easy with inexpensive adapters. DVI offers a higher quality signal compared to VGA. The difference is especially noticeable at higher resolutions. The video quality is a factor of the mechanism of operation and the length and quality of the cable; both are discussed below. One of the purposes of DVI stream encoding is to provide a DC-balanced output that reduces decoding errors. This goal is achieved by using 10-bit symbols for 8-bit or less characters and using the extra bits for the DC balancing.Generalized Timing Formula (GTF) is a VESA standard which can easily be calculated with the Linux gtf utility. Coordinated Video Timings-Reduced Blanking (CVT-RB) is a VESA standard which offers reduced horizontal and vertical blanking for non-CRT based displays. [15] Digital data encoding [ edit ] In December 2010, Intel, AMD, and several computer and display manufacturers announced they would stop supporting DVI-I, VGA and LVDS-technologies from 2013/2015, and instead speed up adoption of DisplayPort and HDMI. [18] [19] They also stated: "Legacy interfaces such as VGA, DVI and LVDS have not kept pace, and newer standards such as DisplayPort and HDMI clearly provide the best connectivity options moving forward. In our opinion, DisplayPort 1.2 is the future interface for PC monitors, along with HDMI 1.4a for TV connectivity".

HDMI is a newer digital audio/video interface developed and promoted by the consumer electronics industry. DVI and HDMI have the same electrical specifications for their TMDS and VESA/DDC twisted pairs. However HDMI and DVI differ in several key ways. The maximum resolution on a DVI-D dual link is 2560×1440 at 60 Hz, the same as the DVI-I dual link resolution. a b "Digital Visual Interface Revision 1.0" (PDF). Digital Display Working Group. 2 April 1999 . Retrieved 31 January 2023. DVI-D (Digital Video Interface - Digital): This port only carries digital signals and hence the name DVI- DIGITAL. It has higher number of pins than DVI-A. The digital signals sent out cannot be received by analog monitors. You need a converter for connecting analog display devices. There are two types in DVI-D. They are Single Link DVI-D and Dual Link DVI-D. The pin configuration for both is given below. DVI-D (Single Link) supports a video stream at 1920X1200 @ 60 Hz. DVI-D (Dual Link) supports a video stream at 2560X1600 @ 60 Hz.

What is DVI?

From a user's point of view, both connectors work in the same way: devices have female ports and the connector cables have male endpoints. The signal is transmitted from the source device via the port to the connector cable and the destination, which is a display device. In addition to digital, some DVI connectors also have pins that pass an analog signal, which can be used to connect an analog monitor. The analog pins are the four that surround the flat blade on a DVI-I or DVI-A connector. A VGA monitor, for example, can be connected to a video source with DVI-I through the use of a passive adapter. Since the analog pins are directly compatible with VGA signaling, passive adapters are simple and cheap to produce, providing a cost-effective solution to support VGA on DVI. The long flat pin on a DVI-I connector is wider than the same pin on a DVI-D connector, so even if the four analog pins were manually removed, it still wouldn't be possible to connect a male DVI-I to a female DVI-D. It is possible, however, to join a male DVI-D connector with a female DVI-I connector. [12]