Talk:Digital Video Interactive

There is a link on this page that states....

Note: The materials and information included in these Web pages are not to be used for any other purpose other than private study, research, criticism or review.

Should it be removed??

Speculation, research, and opinion.

Latest comment: 4 years ago2 comments2 people in discussion

There's much speculation, research and opinion. I'm not going to hit the whole article with citation needed all over the place, but some of the stuff needs to be cited, sourced, or proven to be here. I take task to this very bad statement here: "DVI was the first technology of its kind for the desktop PC, and ushered in the multimedia revolution for PCs."

Being encyclopedic, a "PC" is ANY personal computer by any company. "PC" isn't a format, and was only a handful of models by IBM. The proper term is, "IBM clone," or, "IBM formatted." To back up my rant, here's an old Apple ad from when IBM entered the PERSONAL COMPUTER market: [[1]]

Furthermore, DVI technology DID NOTHING to "usher" in the CD-ROM trend in computing, as there isn't any "multimedia" computer of that era that can access the DVI codec. This statement is pure opinion without source.

"DVI was announced at the second annual Microsoft CD-ROM conference in Seattle to a standing ovation in 1987. The excitement at the time stemmed from the fact that a CD-ROM of the era had a maximum data playback rate of ~1.2 Mbit/s, thought to be insufficient for good quality motion video. However, the DSRC team was able to extract motion video, stereo audio and still images from this relatively low data rate with good quality."

The quoted paragraph has a few wrong points. CD-ROMs, until 2x speed was developed, couldn't muster above 150 KILOBYTES per second, and thus all CD-ROM, DVD-ROM and other OD technology is measured by this standard. Also, the usage of the words, "thought," and, "however," in the paragraph. That's not encyclopedic. Also, is there any sources or proof that this event happened at Micro$oft in 1987?

"The first implementation of DVI developed in the mid-80s relied on three 16-bit ISA cards installed inside the computer, one for audio processing, another for video, and the last as an interface to a Sony CDU-100 CD-ROM drive. The DVI video card used a custom chipset (later known as the i80750 or i750 chipset) for decompression, known as the pixel processor & display called the VDP (video display processor).

"Later DVI implementations only used one card, such as Intel's ActionMedia series (omitting the CD-ROM interface). The ActionMedia (and the later ActionMedia II) were available in both ISA and MCA-bus cards, the latter for use in MCA-bus PCs like IBM's PS/2 series."

Where are the sources to back all of this up? Pictures of the ISA cards? Name of the products? Anything? Pictures or archival/fan websites of the "ActionMedia" line of products?

"The original video compression scheme, called Presentation Level Video (PLV for short), was asymmetric in that a Digital VAX-11/750 minicomputer was used to compress the video in non-real time to 30 frames per second with a resolution of 320 × 240. Video compression involved coding both still frames and motion-compensated residuals using Vector Quantization (VQ) in dimensions 1, 2, and 4. The resulting file (in the .AVS format) was displayed in realtime on an IBM PC-AT (i286) with the add-in boards providing decompression and display functions at NTSC (30 frame/s) resolutions. The IBM PC-AT equipped with the DVI add-in boards hence had 2 monitors, the original monochrome control monitor, and a second Sony CDP1302 monitor for the color video. Stereo audio at near FM quality was also available from the system.

"Intel evaluated DVI and acquired the technology from General Electric, and Intel then utilized the i750 technology in driving creation of the MMX instruction set. This instruction set was added to the Pentium (r) processors. Intel now owns the DVI standard as of 2007.

"The original team from DSRC (David Sarnoff Research Center) set up NJ1 as the Princeton Operation. Andy Grove was a great supporter of the Princeton Team during its term of operation. In 1992 Ken Fine (the Vice President of Intel) decided to shutter the operation and transfer those employees willing to move to other Intel sites in Arizona and Oregon. Final site closure occurred almost a year later in August or September 1993."

Any sources on any of this at all? Is there documentation about the MMX instruction set using DVI? Is there proof from Intel that they "own" the DVI "standard" at all?

This article is poor, and needs to either become a stub, absorbed into another article, or re-written by somebody who knows much on the subject.

03:41, 27 February 2010 (UTC) —Preceding unsigned comment added by Sierraoffline444 (talk • contribs) Sierraoffline444 (talk) 03:43, 27 February 2010 (UTC)Reply

Where to begin?

The article's statement "CD-ROM of the era had a maximum data playback rate of ~1.2 Mbit/s" led to your critique: "CD-ROMs, until 2x speed was developed, couldn't muster above 150 KILOBYTES per second." A simple act of arithmetic will reveal that 150 KB/s is, in fact, exactly equal to 1.2 Mbit/s. What, then, was your objection to that statement?

"Is there any proof that this event happened (...) in 1987?" One independent reference I found, after surprisingly little Googling, is in the "Encyclopedia of Library and Information Science: Volume 50, supplement 13", edited by Allen Kent from the University of Pittsburgh School of Library and Information Science, ISBN 0-8247-2277-9. The relevant information is on page 98, which is visible in the Google Books preview of the publication. It affirms that the Digital Video Interactive format and associated technologies were, in fact, revealed at the second in a series of annual conferences hosted by Microsoft on the topic of CD-ROMs. In the introducing section, it had been established that the first such conference was held in 1986, so it follows that the second was held in 1987. 142.162.115.33 (talk) 19:45, 20 May 2020 (UTC)Reply

External links modified

Latest comment: 7 years ago1 comment1 person in discussion

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