Joined in 2023 
82 
63 About this deal
Because P&D was a physically large, expensive connector, a consortium of companies developed the DFP standard (1999), which was focused solely on digital video transmission using a 20-pin micro ribbon connector and omitted the analog video and data capabilities of P&D. [4] :3 [5] :4 DVI instead chose to strip just the data functions from P&D, using a 29-pin MicroCross connector to carry digital and analog video. [8] Critically, DVI allows dual-link TMDS signals, [9] meaning it supports higher resolutions than the single-link P&D and DFP connectors, which led to its successful adoption as an industry standard. Compatibility of DVI with P&D and DFP is accomplished typically through passive adapters that provide appropriate physical interfaces, as all three standards use the same DDC/EDID handshaking protocols and TMDS digital video signals. [10] :§1.3.7 Technical overview [ edit ] 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. DVI stands for Digital Audio Interface and it was an attempt to create an industry standard for video connectors, a seat which HDMI has now filled. The technology is a little dated, but like VGA, it’s still common on computers, monitors, TVs, and other displays.
To convert DVI to HDMI you’ll need a passive physical adapter. The good news is both DVI-I and DVI-D can be converted to HDMI because they both use digital signals. As mentioned earlier the pin configuration of three types is different and you have to match the appropriate cable connection or the port will be damaged permanently. Do not assume all DVI cables are exchangeable and connect a DVI-A plug to DVI-D port and vice versa. You need to connectDVI-A plug to DVI-A port only and similarly DVI-D connectors. As for DVI-I it can take both DVI-A and DVI-D cable. As I mentioned earlier, DVI and VGA are dying standards, but they still have some practical uses. DVI-I is good because it can support modern resolutions (1080P at 60Hz) and you can easily convert it to other connector types. Most analog connectors, such as VGA, require active adapters to convert to HDMI, but you don’t need that with DVI. 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 VGAManchester, Gary (October 7, 1996). "Molex PnD intellectual property letter" (PDF). Archived from the original (PDF) on February 22, 2003. Although DVI is present in most modern day graphic cards and HD monitors it is gradually being phased out. At present HDMI is preferred over DVI and HDMI is also being preceded by USB-C. But for few years we will see DVI in our life. DVI-I port is the most popular one of all the three types of DVI connectors and is used for connecting High Definition displays to the PC. Since it can run video stream at 2560X1600 pixel (with refresh rate of 60Hz), the user can experience high definition gaming and movie experience. MicroCross DVI (Digital Visual Interface) Connector System" (PDF). Molex. November 1999 . Retrieved 31 January 2023. 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 ] DVI-D single link has the same bandwidth as DVI-I single link, so the maximum resolution is the same at 1920×1200 at 60 Hz.
So you can use it to connect to a secondary old monitor or TV that only has DVI or VGA inputs. The output resolution will be good enough for documents and watching movies but it won’t be true-HD and I definitely do not recommend it for games. Some DVD players, HDTV sets, and video projectors have DVI connectors that transmit an encrypted signal for copy protection using the High-bandwidth Digital Content Protection (HDCP) protocol. Computers can be connected to HDTV sets over DVI, but the graphics card must support HDCP to play content protected by digital rights management (DRM). High-Definition Multimedia Interface (HDMI), a forward-compatible standard that also includes digital audio transmission Kruegle, Herman (2006). "8". CCTV Surveillance: Analog and Digital Video Practices And Technology. Butterworth-Heinemann. p.268. ISBN 0-7506-7768-6.
Wrapping it Up
The DVI connector on a device is given one of three names, depending on which signals it implements: Thunderbolt: an interface that has the same form factor as Mini DisplayPort (in version 1 and 2) or USB-C (in version 3 and 4) but combines PCI Express (PCIe) and DisplayPort (DP) into one serial signal, permitting the connection of PCIe devices in addition to video displays. It provides DC power as well. DVI-I (integrated, combines digital and analog in the same connector; digital may be single or dual link)
The Best DVI Cable for 144hz | The Technology Land". thetechnologyland.com. 2019-08-21 . Retrieved 2022-07-14.
DVI-A is the analog format connector. This is the type used to connect a DVI card to a CRT monitor (an analog display device). Although the signal does undergo a digital-to-analog conversion, the result is of higher quality than when using a standard VGA cable. Female M1-DA connector pins (view of plug) DVI port on a Sony HD CRT TV that complies with EIA-861 DVI output connector on a computer 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]
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.
VGA to DVI
Most modern graphics cards have abandoned VGA ports but they still have one or more DVI ports. It’s rumored these connectors will be abandoned soon too. DVI connectors use digital signals, and the DVI-I version has a couple of pins for analog signals, so you can easily convert to VGA with a simple port converter (more on that later). DVI-I (Digital Video Interface - Integrated): As the name suggests DVI-I supports both analog and digital signals but not both at the same time. The user has to choose the type when both are supported at the other end. DVI-I port can be connected to both VGA monitors and HD monitors. There are two types in DVI-I. They are Single Link DVI-I and Dual Link DVI-I. The pin configuration for both is given below. You can see in pin diagram the DVI-I pins are a combination of both DVI-A and DVI-D. DVI-I (Single Link) supports a video stream at 1920X1200 @ 60 Hz. DVI-I (Dual Link) support a video stream at 2560X1600 @ 60 Hz. Unified Display Interface (UDI) was proposed by Intel to replace both DVI and HDMI, but was deprecated in favor of DisplayPort.
Great Deal 
New Comment