80:
53:
148:
172:
225:
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22:
654:...". The the former definition does not allow the value 2288 to be encoded: (255 * 8) + 31 = 2071, while the latter definition does: (255 + 31) * 8 = 2288. Also, using the latter definition causes my program that interprets EDID info from a real display to produce much more sensible values of x and y resolution.
964:
EDID is a subsection of CEA-861, which in itself is a much bigger animal that warrants being explained as HDMI and DVI signaling is based on this standard. The standard was also derived from traditional analogue video signalling, so it has a very important and valuable history in the world of video
419:
The article states, "Many Wide XGA panels do not advertise their native resolution, instead offering only a resolution of 1280Ă—768." 1280x768 is a 5:3 aspect ratio. It appears from the EDID Data Format that the only supported aspect ratios are: 16:10, 4:3, 5:4, and 16:9. How do they "offer"
641:
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Year of manufacture, less 1980. (1980–2235). If week=255, it is the model year instead. In my example this Byte contains 0x16 which the ST tool says indicates 2012, but if I follow this articles algorithm (0d1980 + 0x16 = 0d2002) I come up with the year 2002.
777:
The article says that bytes 8-9 of EDID 1.3 data carry a three-letter manufacturer ID assigned by
Microsoft. It appears that these IDs are nowadays assigned by UEFI Forum instead. I have not found a secondary source to prove this change; only the following:
574:
The PCB bits part is true, and the previous is true for normal compressed bitstreams, but not for High Bit-Rate Audio (HBRA) bitstreams like Dolby TrueHD (MLP) or DTS-HD, at least for those formats it is vendor specific. Can anyone elaborate more on this?
747:
According to Brian
Markwalter, senior vice president, research and standards, CEA, -864F "includes a number of noteworthy enhancements, including support for several new Ultra HD and widescreen video formats and additional colorimetry schemes."
473:"Many Wide XGA panels do not advertise their native resolution, instead offering only a resolution of 1280Ă—768. Some panels advertise a resolution only slightly smaller than the native, such as 1360Ă—765. For these panels to be able to show a
370:
Seems quite confusing to match the format to the example given. Is "10-11: Product ID Code (little endian)" the "Monitor ID EPID775"? And how do you jump from a 2-byte "08-09: Manufacturer ID" to "Monitor
Manufacturer: Company Name Envision,
491:
339:
In item 21 where it says "Maximum
Horizontal Image Size (in millimetre). Multiply by 10 for actual value." wouldn't it sound a little less silly to say "Maximum Horizontal Image Size (in centimetre)"Â ? The same goes for item 22.
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Byte 64Â :: Encoded value should either be 0x000A or 0x200. When reading byte 64, the value returned is 0xA00 (rather than 0x000A) - Is reading of byte 64 just a straightforward extraction of 2 bytes?
686:
In the
Features bitmap (byte 17) of the "EDID Detailed Timing Descriptor", bits 6-5 say "Stereo mode: 00=No stereo; other values depend on bit 0", but bit 0 says "2-way line-interleaved stereo, if
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panels the nearest resolution expressible in the EDID syntax is 1360Ă—765 pixels. Specifying 1368 pixels as the screen width would yield an unnatural screen height of 769.5 pixels."
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UEFI Forum says ACPI uses PNP IDs that consist of a 3-letter vendor ID and a 16-bit product ID, and they can assign the vendor ID; they don't explicitly mention EDID though:
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Byte 17: week=255 to indicate model year instead of production (this is not allowed in v1.3) Byte 24: Display type. The introduction of digital variant came about in v1.4
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In the "EDID 1.3 data format" section there are a couple of edits that change the structure to EDID v1.4 without changing the title and reference. Among others:
783:
400:, Timing Descriptor 3 gives you 13 characters for manufacturer name. Not sure where the extra '.' came from at the end, that may have been the software... --
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Furthermore I'd suggest to give the hex form of the given example along with its translation for developers to check if there implementations do right.
138:
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There is not yet any comprehensive coverage of CEA-861 on
Knowledge. The thing to do to improve this would be to replace the current redirect with a
790:
https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/10d9ba88-cbbe-4e94-bb51-e3c5749b56d6/how-to-obtain-a-pnp-vendor-id?forum=HardwareBoards
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I just checked the EDID 1.3 standard, release A, revision 1, and on page 12 it says clearly that "Value stored = (Year of manufacture - 1990)". --
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I am using the ST EDID Editor v1.5.1.0 at work and I find a major discrepencay is how the year of manufacture is stored. Byte 17 --: -->
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image, the EDID data must be ignored by the display driver. Special programs are available to override the EDID data; PowerStrip for
162:
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When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
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https://web.archive.org/web/20130821071213/http://ce.org/Standards/Standard-Listings/R4-8-DTV-Interface-Subcommittee/CEA-861-E.aspx
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Thus I think the correct line would be: Year of manufacture, less 1990. (1990–2245). If week=255, it is the model year instead.
878:
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EDID is used by all digital displays which use HDMI/DVI connection (almost all TV sets today). This fact seems to be omitted.
488:
No, they are overriding the graphics card driver limitations. The EDID data is often present in the aforementioned DTD field.
858:
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https://social.msdn.microsoft.com/Forums/en-US/4b0fc30e-1f26-4b47-b416-d194667ee7d1/how-to-obtain-a-pnp-vendor-id?forum=wdk
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For heavens sake, wouldn't "According to the CEA" be enough for this referenced entry? Was edit made by Mr. Markwalter?
582:
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the same vendor asking for a PNP ID on another
Microsoft forum; someone from Microsoft referred them to the UEFI Forum:
571:
In the text it says: "For all other sound formats, bits 7..0 designate the maximium supported bitrate divided by 8kHz."
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signaling. The fact that CEA-861 redirects to EDID, which is a small sliver of the CEA-861 standard, is kinda crazy.
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to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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924:
If you have discovered URLs which were erroneously considered dead by the bot, you can report them with
865:. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit
496:
In EDID, the set of RGB-primaries along with white point is encoded with chromaticities only, i. e. 4
359:
Is there some way to include later extensions to the EDID Standard such as
Reference for 1.2 and 1.3
601:
Some HDMI accessories such as HDMI splitters specify an "EDID Duration" such as 6s. What is this? --
536:
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383:
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In the figure "EDID structure, version 1.3", byte 0 of bytes 38-53 is described as "x resolution,
240:
on
Knowledge. If you would like to participate, please visit the project page, where you can join
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on
Knowledge. If you would like to participate, please visit the project page, where you can join
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before doing mass systematic removals. This message is updated dynamically through the template
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455:"The number of vertical pixels is calculated from the horizontal resolution and the selected
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http://www.ce.org/Standards/Standard-Listings/R4-8-DTV-Interface-Subcommittee/CEA-861-E.aspx
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Converting a full set of chromaticities (xy for RGB+W) to a full set of triplets (Yxy/XYZ)
8:
21:
891:, "External links modified" talk page sections are no longer generated or monitored by
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If you found an error with any archives or the URLs themselves, you can fix them with
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500:-pairs for red, green, blue and white. How can this chromaticity set be converted to
478:
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Encoding of "x resolution" in "Standard Timing Information" described incorrectly?
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are not 00." Should the bit 0 description be "2-way line-interleaved stereo, if
796:
https://msdn.microsoft.com/en-us/library/windows/hardware/dn610887(v=vs.85).aspx
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310:. Since then, versions 1.1, 1.2, 1.3 and 2.0 have appeared. An enhanced version
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manufacturer IDs or vendor IDs now assigned by UEFI Forum rather than Microsoft
328:
897:. No special action is required regarding these talk page notices, other than
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Not accurate at all. EDIDs go down to single pixels in their DTD fields.
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in "Limitations: "A major limitation of EDID is that it cannot express the
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This does not agree with the article, which claims 3.0 appeared in 1997.
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But who is right? This article or the ST EDID Editor's implementation?
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Microsoft documentation says PNP IDs are requested through UEFI.org:
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display must thus be a multiple of 16Ă—9 pixels. For 1366Ă—768 pixel
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Inconsistency in Features bitmap of Detailed Timing Descriptor?
650:(256-2288 pixels)". I believe this should say "x resolution,
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449:. The number of horizontal pixels must be a multiple of 8. "
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This is only true in the simple timing descriptor fields.
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a monitor vendor asking for a PNP ID on a Microsoft forum:
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Why so specific about computer displays and graphics cards?
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for additional information. I made the following changes:
306:
The first version of EDID, 1.0, was produced in August
1076:
C-Class Computer hardware articles of Low-importance
236:, a collaborative effort to improve the coverage of
91:, a collaborative effort to improve the coverage of
901:using the archive tool instructions below. Editors
344:I was going to say the same thing. Change made. -
1027:
887:This message was posted before February 2018.
1056:C-Class software articles of Low-importance
415:1280x768? Is this a supported aspect ratio?
857:I have just modified one external link on
1091:Mid-importance computer graphics articles
1071:Low-importance Computer hardware articles
1006:Video Electronics Standards Association
567:Short Audio Descriptor Byte 3 (Bitrate)
459:. To be fully expressible, the size of
250:Knowledge:WikiProject Computer graphics
19:
1096:WikiProject Computer graphics articles
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836:2001:420:44C1:2578:D485:3B8D:CE2F:73E7
821:Apparent edits without changing header
808:2001:14BB:140:1A32:F0B2:F9A8:E24B:7B68
253:Template:WikiProject Computer graphics
802:http://www.uefi.org/PNP_ACPI_Registry
859:Extended Display Identification Data
698:Year of manufacture off by 10 years?
335:in milimetres, then multiply by 10Â ?
316:Extended Display Identification Data
230:This article is within the scope of
85:This article is within the scope of
15:
38:It is of interest to the following
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1086:C-Class computer graphics articles
1066:C-Class Computer hardware articles
447:liquid crystal display televisions
301:before I merged the two articles:
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146:
14:
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1041:Low-importance Computing articles
1004:What is the relationship between
861:. Please take a moment to review
1051:Low-importance software articles
960:CEA-861 shouldn't redirect here.
293:Conflict between merged articles
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78:
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20:
1010:Consumer Technology Association
297:The following text appeared on
270:This article has been rated as
133:This article has been rated as
113:Knowledge:WikiProject Computing
816:11:01, 27 September 2015 (UTC)
737:13:30, 26 September 2012 (UTC)
561:15:36, 24 September 2008 (UTC)
116:Template:WikiProject Computing
1:
1012:with respect to this topic? ~
955:10:57, 3 September 2017 (UTC)
844:07:19, 6 September 2016 (UTC)
244:and see a list of open tasks.
233:WikiProject Computer graphics
179:This article is supported by
155:This article is supported by
107:and see a list of open tasks.
767:19:47, 17 October 2013 (UTC)
531:11:32, 17 October 2007 (UTC)
515:, please don't reply here.
182:Computer hardware task force
7:
722:15:08, 16 August 2012 (UTC)
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591:15:21, 4 January 2010 (UTC)
10:
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1036:C-Class Computing articles
994:12:51, 21 April 2021 (UTC)
975:05:48, 19 April 2021 (UTC)
918:(last update: 5 June 2024)
854:Hello fellow Wikipedians,
511:I started a discussion in
366:matching format to example
349:09:06, 31 March 2006 (UTC)
276:project's importance scale
256:computer graphics articles
139:project's importance scale
1046:C-Class software articles
1022:15:08, 24 June 2021 (UTC)
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850:External links modified
481:and DisplayConfigX for
1081:All Computing articles
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101:information technology
28:This article is rated
1061:All Software articles
652:divided by 8, less 31
648:less 31, divided by 8
174:
150:
88:WikiProject Computing
899:regular verification
743:Where credit is due?
318:) appeared in July,
158:WikiProject Software
889:After February 2018
443:flat panel displays
438:of the most common
430:This isn't right...
355:Addition Extensions
943:InternetArchiveBot
894:InternetArchiveBot
436:native resolutions
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119:Computing articles
34:content assessment
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461:wide screen
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404:RevRagnarok
374:—Preceding
1030:Categories
950:Report bug
729:DSGalaktos
420:1280x768?
933:this tool
926:this tool
329:AxelBoldt
110:Computing
97:computing
93:computers
59:Computing
939:Cheers.—
832:unsigned
755:unsigned
692:bits 6-5
688:bits 4–3
671:contribs
663:DaveBeal
659:unsigned
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557:contribs
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519:unsigned
483:Mac OS X
465:Wide XGA
422:PRBryson
388:contribs
376:unsigned
64:Software
982:WP:STUB
863:my edit
714:Qarkino
346:Ahruman
274:on the
137:on the
30:C-class
508:-set?
371:Inc."?
99:, and
36:scale.
504:- or
312:EEDID
1018:talk
1014:Kvng
1008:and
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840:talk
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603:Iain
587:talk
553:talk
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445:and
398:here
384:talk
320:2001
308:1994
299:EDID
984:. ~
907:RfC
877:to
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502:XYZ
266:Mid
129:Low
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
