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)