Talk:Digital Visual Interface

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!