Talk:Digital Visual Interface/Archive 2

Archive 1

Archive 2

Phased out in new TVs?

Isn't DVI now being phased out in favor of HDMI in new TVs? Probably should write something about that.

HDMI and DVI are pin for pin compatible for the digital signals (but not the analogue). Adaptors are available that feely convert one connector to the other. However, the electrical characteristics are not the same and a DVI source will show greater saturation when connected to a HDMI display. Since DVI only supports a subset of the HDMI capability, connecting an HDMI source to a DVI display will only work if the HDMI is operating in RGB mode (at least in theory). In practice, a DVI input may support features that do not officially belong to the DVI capability set. Also HDCP can cause problems of the DVI input does not support it. The article currently reflects this, so I do not feel any alteration is required. DieSwartzPunkt (talk) 15:40, 10 July 2012 (UTC)

"a DVI source will show greater saturation when connected to a HDMI display". How does that happen? Jeh (talk) 16:35, 10 July 2012 (UTC)

... I don't think it happens. The HDMI display will work in what I'll call "DVI mode", compatible with DVI signaling. Remember, HDMI inputs are required to be compatible with DVI-D signals. If you have a citation otherwise, please provide. Jeh (talk) 16:09, 15 July 2012 (UTC)

DVI-D, DVI-I

It isn't clear whether all the modifications of DVI (like DVI-I, DVI-D, etc.) are compatible and male fit to female. Actually, just yersterday a salesman in an electronics shop was not able to explain it, and even wikipedia has nothing on it :(

Today I received a DVI-I cable for my DVI-D monitor, so I had to remove C1-C5 in order to make DVI-I -> DVI-D work. First I just removed C1-C4 but the flat C5 pin is wider on the male DVI-I connector (as correctly pointed out in the article page). The article gets it half-wrong, though, when it states: The long flat pin on a DVI-I connector is wider than the same pin on a DVI-D connector, so it is not possible to connect a male DVI-I to a female DVI-D by removing the 4 analog pins., since, like I mentioned before, removing C5 works fine. I have no clue what the purpose of C5 is in case of DVI-D. See http://i.imgur.com/Sg6u8.jpg (sorry, I don't know yet how to embed files). — Preceding unsigned comment added by 78.3.21.180 (talk) 14:01, 14 August 2012 (UTC)

Correction: not half-wrong or wrong.. just incomplete. :) — Preceding unsigned comment added by 78.3.21.180 (talk) 14:06, 14 August 2012 (UTC)

CVT-RB / GTF

The terms "CVT-RB blanking" and "GTF blanking" need to be defined/explained. I think it's reduced blanking and normal blanking (LCDs don't need time for the electron beam to get into position for the next line/frame), but need someone to confirm this. Look here: http://www.playtool.com/pages/dvicompat/dvi.htm — Preceding unsigned comment added by 72.251.90.21 (talk) 18:51, 26 July 2009 (UTC)

DVI History

Shouldn't this have a little bit about the history of DVI? ie When it first surfaced, who was involved in its orginal design, perhaps a time line of any changes made to its spec, etc. So far, it seems to be limited to only technical information. — Preceding unsigned comment added by 99.192.63.94 (talk) 01:59, 13 April 2010 (UTC)

Article improvement offer

There is a popular myth or reality, (i dont know) about using dual-link DVI over single-link for 1920x1080x24@60 mode. I offer to include some kind of answer to this question right in the technical details in this article. Because right now we can not figure the answer from this article, so it defenetely needs an improvement. To understand the basic question i will provide some more details below.

For example, let us assume that Single Link DVI takes exactly 1/100th second at 1920x1080x24@60 to transfer image to monitor because its bandwidth limits. Since image was generated i could be able to see it on screen only after 1/100th of second or more, depending on monitor input lag, but not less. Because it is the time required to transfer data over single-link DVI to monitor, considered for simplicity in our example. Out of that words - it seems, that Dual-Link DVI-D cable is able to transfer frame image from card to monitor exactly 2 times faster, lowering this latency twice, right to 1/200th of second for same 1920x1080x24@60 mode. And i can not figure out is it so or not from this article. So that's the point. — Preceding unsigned comment added by Xakepp35 (talk • contribs) 22:25, 22 March 2013 (UTC)

DVI speeds

I read that a DVI-D connection was better able to carry hi-res monitors than DVI-I. Are the speeds of the different flavours different? — Preceding unsigned comment added by 101.98.156.140 (talk) 09:59, 25 July 2013 (UTC)

The non-DDWG DVI M1-DA Connector Image

Someone edited this article and inserted File:M1-DA.svg below the diagram for the standard DVI connectors listing it as "Male M1-DA connector pins (view of plug)" with "DVI M1-DA (Dual Link + USB)" as part of the picture. More correctly it should be called a "M1-P&D Connector," although I have seen it referred as an "M1-DA DVI Connector" in the literature because of its so-similar pin out. The use of the DVI acronym is not correct for this connector. As stated in the first sentence, this article is about "a video display interface developed by the Digital Display Working Group (DDWG)." The M1-DA Interface is a VESA Standard, not a DDWG Standard and therefore its presence violates the intention of the article. Wikipedia has a discussion of this interface at VESA Plug and Display. Also, this image is not referenced anywhere in the text.

I have found discussions on the Web using Google that refer to this particular image in this article where it is clear that it has led to confusion for multiple people as it did me.

My plan is to remove the image and add a comment with a link to VESA Plug and Display noting the similarity of the pin out. I will wait for some comment from someone else for a couple of weeks, before I do it.

If it were to stay, we would need a full pin description to match what is already there. The article VESA Plug and Display does not have a pin out description. That would be a good project for someone to do to match the quality of this article. Edward E Fairchild (talk) 03:11, 20 January 2014 (UTC)

Protocol?

The article claims: "Protocol: 3 × transition minimized differential signaling data and clock" - Wouldn't "6x transition minimized differential signaling and clock" be more correct, as single-link DVI (with 3x TMDS) is only a subset of DVI? 87.189.122.81 (talk) 20:34, 13 April 2014 (UTC)

Request: could someone add a connector compatibility table?

Could someone who understands this stuff construct a connector compatibility table in the main article?

I found this Wikipedia article when trying to determine whether or not I could connect my Dell G2210 LCD monitor, via a Sandstrom AV S10HDV11X HDMI to DVI Adaptor, to my Android tablet (which has a mini-HDMI socket). The photos in this article are very helpful and allowed me to answer my question with some additional reasearch which I share below.

The Dell monitor is listed as having DVI-D interface with a native resolution of 1680 x 1050 at 60 Hz (it includes HDCP capability). Neither the Sandstrom specification nor the Dell specification go as far as identifying the link capability (single or dual link). Fortunately this can be inferred from physical inspection of the connectors (prior to a purchase being made in the case of the converter, scrutiny of the Sandstrom website product photograph): the Dell G2210 supports DVI-D single link and the Sandstrom converter DVI-D dual link. (The Dell monitor has a dual link DVI female socket and the cable from my PC a single link DVI male plug.)

The $64 million question: are DVI-D dual link connectors pin compatible and functionally compatible with DVI-D single link connectors?

And the answer is: yes to both questions.

My current PC configuration confirms pin compatibility.

With regard to functional compatibility, the single link DVI specification supports a date rate of up to 165 MHz (1680 X 1050 resolution with a 60 Hz data rate requires a 146 MHz link pixel clock speed); a higher resoloution than this requires a second link (hence the 'dual link' reference). I got this answer from the Play Tool website (courtesy of a Duck Duck Go web search): http://www.playtool.com/pages/dvicompat/dvi.html

Thanks! — Preceding unsigned comment added by 92.20.45.130 (talk) 06:52, 21 April 2014 (UTC)

Overlapping formats between hdmi and DVI

Could anyone explict those formats especially framerates? — Preceding unsigned comment added by 177.96.133.79 (talk) 17:45, 16 October 2015 (UTC)

WQHD

the list of supported formats contains all kinds of exotic unused resolutions. I'd very much like to see the more common WQHD resolution of 2560x1440 added. PizzaMan (♨♨) 14:22, 19 October 2015 (UTC)

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DVI not the only analog carrier anymore

With DisplayPort fairly widespread, the paragraph stating DVI is the only standard carrying both analog and digital should be revised (with a source), or removed. -wizzard2k ^(C-T-D) 15:53, 29 June 2016 (UTC)

DP is digital-only, requiring an active external RAMDAC, whereas DVI-I & DVI-A have pins that carry native analog signals. 104.192.89.129 (talk) 21:05, 11 July 2016 (UTC)

The external thing would just be a DAC. It would have no need to store and look up items in a color palette; that's already been done by the time the bits come out of DP. Jeh (talk) 21:51, 11 July 2016 (UTC)

DVI should redirect to the Disambiguation page, not here

Obviously, there are a lot more things "DVI" can stand for. 213.149.61.233 (talk) 20:54, 27 June 2017 (UTC)

At the top of the page, there is a link to the disambiguation page. (Where you can see those other uses.) Unless you believe that one of those uses is searched for often enough, this one should be fine. Gah4 (talk) 22:35, 27 June 2017 (UTC)