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layIDä Standard
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Phone: 408-957-927=
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860 Hillview Court, Su=
ite 150
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nbsp; Fax: &=
nbsp; 408-957-9277
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CA 95035  =
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; URL: www.v=
esa.org
VESA Display Identification Data
(DisplayID) Structure
Standard
Version 1
December 13, 2007
Purpose
This standard defines flexible data formats that organ=
ize interface
and display configuration information in a file stored in a display product=
. A
host has access to the file over the video interface connection. The
host uses this data to automatically setup and optimize the video interface=
and
image signals
facilitating plug and play operation with minimal or no user intervention. =
Summary
This document describes the second-generation version = of the Extended Display Identification Data standard, now referred to as DisplayID. This standard is intended as a replacement for all previous EDID versions. It contains several new features which better permit its use in a wide range of applications, including PC monitors, consumer television products, “embedded” displays (e.= g., notebook LCD panels) and other display products. As in the original EDID specificat= ions, the intent is to provide a simple, compact data structure allowing informat= ion about the display currently in use by the system, including model and specific un= it identification information, colorimetry, basic feature support, and support= ed timings and formats, to be supplied to the host video source over an appropriate communications channel, such as the VESA E-DDC. This information may then be used = by the source to automatically configure itself for optimum support of the display= in question. The basic structure= (or base Display ID) as defined by t= his specification is a variable length block of data of up to 256-byte. This standard also permits additional variable length blocks of up to 256-byte, = or “DisplayID Extensions= ,” to be added to the base structure in those applications where it is desirab= le that additional information be provided by the display.
Note:<= /b> The DisplayID definition is not directly backward compatible with earlier EDID/E-EDID definitions, but does carry over many data field definitions from those earlier standards.&= nbsp; Several significant changes have been made, however, and readers are strongly encouraged to familiarize themselves thoroughly with this document before attempting to implement systems based on the DisplayID specification= .
Table of Contents
Revision History=
span>..........................................=
...........................................................................=
.......... 7
1 =
OVERVIEW<=
span
style=3D'mso-tab-count:1 dotted'>..........................................=
...........................................................................=
......... 8
1.1 =
Summary..........................................=
...........................................................................=
........... 8=
1.2 =
Standard Objectiv=
es..........................................=
...................................................................... 9=
1.3 =
Reference Documen=
ts..........................................=
.................................................................. <=
/span>9=
1.4 =
General Notes..........................................=
...........................................................................=
.. 10=
1.5 =
Terminology..........................................=
...........................................................................=
.... 10=
1.6 =
Data Format Conve=
ntions..........................................=
........................................................... <=
!--[if supportFields]> PAGEREF _Toc177298801 \h 11=
1.7 =
Conflicts between DisplayID vs interface related
configuration data..................=
.................. 11=
2 =
DisplayID
Structure and Format Definition.....=
......................................................................... <=
/span>13
2.1 =
Structure
Version/Revision....................=
...........................................................................=
.... 15=
2.2 =
Section Size..........................................=
...........................................................................=
..... 15=
2.3 =
Product Type Iden=
tifier..........................................=
............................................................... 15=
2.4 =
Extension Count/
Section Flag........................=
...................................................................... 16=
2.5 =
Checksum..........................................=
...........................................................................=
........ 17=
3 =
Data Bloc=
ks
– Description and Usage.......=
...........................................................................=
.... 18
3.1 =
Data Block Format=
and
Definitions.........................=
............................................................. 19=
4 =
Data Block
Definitions.........................=
...........................................................................=
........ 21
4.1 =
Product Identific=
ation
Data Block..........................=
............................................................... 21=
4.1.1 =
Manufacturer/Vendor ID..............................................................=
................................. 22
4.1.2 =
Product Code........................................................................=
......................................... 22
4.1.3 =
Serial Number.......................................................................=
......................................... 22
4.1.4 =
Week and Year of Manufacture/Model Year..........................................=
........................ 22
4.1.5 =
Size of Product ID String.................................................................=
.............................. 23
4.1.6 =
Product ID String...................................................................=
....................................... 23
4.2 =
Display Parameter=
s Data
Block...............................=
.............................................................. 23=
4.2.1 =
Image Size..........................................................................=
........................................... 24
4.2.2 =
Horizontal and Vertical Pixels (Native Format)..........................................=
................... 24
4.2.3 =
Feature Support Flags...............................................................=
.................................... 25
4.2.4 =
Transfer Characteristic Gamma.................................................................=
.................... 26
4.2.5 =
Aspect Ratio........................................................................=
........................................... 26
4.2.6 =
Color Bit Depth.....................................................................=
......................................... 27
4.3 =
Color Characteris=
tics..........................................=
................................................................... =
27=
4.4 =
Video Timing Mode=
s..........................................=
.................................................................. <=
/span>29=
4.4.1 =
Type I Timing – Detailed.................................................................=
............................... 30
4.4.2 =
Type II Timing – Detailed.................................................................=
............................. 34
4.4.3 =
Type III Timing – Short.................................................................=
................................. 36
4.4.4 =
Type IV Timing – DMT ID Code..........................................=
.......................................... 37
4.5 =
Supported Standard
Timing Modes........................=
............................................................... 38=
4.5.1 VESA Timi=
ng Standard.........=
...........................................................................=
.............. 38
4.5.2 =
CEA Timing Standard.................................................................=
................................... 41
4.6 =
Video Timing Range
Limits..............................=
.................................................................... 43=
4.6.1 =
Minimum Pixel Clock.................................................................=
.................................... 44
4.6.2 =
Maximum Pixel Clock.................................................................=
................................... 44
4.6.3 =
Minimum Horizontal Frequency.................................................................=
................... 44
4.6.4 =
Maximum Horizontal Frequency.................................................................=
.................. 44
4.6.5 =
Minimum Horizontal Blanking.................................................................=
...................... 44
4.6.6 =
Minimum Vertical Frequency.................................................................=
........................ 44
4.6.7 =
Maximum Vertical Frequency.................................................................=
....................... 45
4.6.8 =
Minimum Vertical Blanking.................................................................=
.......................... 45
4.7 =
Product Serial Nu=
mber..........................................=
................................................................ 45=
4.8 =
General Purpose A=
SCII
String..............................=
................................................................. =
span>46=
4.9 =
Display Device Da=
ta..........................................=
................................................................... =
46=
4.9.1 =
Display Device Technology.................................................................=
.......................... 47
4.9.2 =
Display Device Operating Mode & Flags..........................................=
............................ 48
4.9.3 =
Device Native Pixel Format.................................................................=
.......................... 49
4.9.4 =
Physical Aspect Ratio and Orientation..........................................=
................................. 49
4.9.5 =
Subpixel Information (Layout/Configuration)..........................................=
...................... 51
4.9.6 =
Horizontal and Vertical Dot or Pixel Pitch..........................................=
.......................... 52
4.9.7 =
Color Bit Depth.....................................................................=
......................................... 52
4.9.8 =
Response Time.......................................................................=
........................................ 52
4.9.9 =
Subpixel Layout Examples.................................................................=
............................ 53
4.10 &=
nbsp; Interface Power
Sequencing Data Block...............=
............................................................. 58=
4.11 &=
nbsp; Transfer
Characteristics Data Block..........=
........................................................................ =
span>59=
4.12 &=
nbsp; Display Interface=
Data
Block...............................=
............................................................. 63=
4.12.1 =
Interface Type/Number of Links or Channels..........................................=
....................... 64
4.12.2 =
Interface Standard Version and Release Number
4.12.3 =
Supported Interface Color Depth.................................................................=
.................. 65
4.12.4 =
Supported Content Protection.................................................................=
....................... 66
4.12.5 =
Content Protection Standard Version and Release =
Number..........................................=
. 66
4.12.6 =
Spread Spectrum Information.................................................................=
....................... 67
4.12.7 =
Interface Type Dependant Attribute..........................................=
..................................... 67
4.13 &=
nbsp; Stereo Display
Interface Data Block................=
.................................................................. <=
/span>69=
4.13.1 =
Stereo Interface Method Code.................................................................=
...................... 69
4.13.2 =
Field Sequential Stereo.................................................................=
................................. 70
4.13.3 =
Side-by-side Stereo.................................................................=
....................................... 70
4.13.4 =
Pixel Interleaved Stereo.................................................................=
................................ 71
4.13.5 =
Dual Interface Left and Right Separate..........................................=
................................ 71
4.13.6 =
Multiview=
...........................................................................=
............................................ 72
4.13.7 =
Proprietary Stereo Interface Methods..........................................=
.................................. 73
4.14 &=
nbsp; Vendor Specific D=
ata
Block...............................=
............................................................... 74=
Tables
Table 1‑1: Normative References.....................................................................=
................................ 9
Table 1‑2: Informa=
tive
References..........................=
......................................................................... <=
/span>9
Table 1‑3: Data Fo=
rmat
Conventions.........................=
..................................................................... 11
Table 2‑1 : Displa=
yID
Section Structure...................=
....................................................................... 13
Table 2‑2: Display=
ID Base
Structure Review....................=
.............................................................. 14
Table 2‑3: Display=
ID
Extension Structure Review..........=
................................................................ 14
Table 2‑4: Display=
ID Structure
Version & Revision..............=
......................................................... =
PAGEREF
_Toc184735124 \h =
15
Table 2‑5: Display=
ID
Section Size........................=
.......................................................................... =
15
Table 2‑6: Display=
ID
Product Type Identifier.............=
.................................................................... 16
Table 2‑7: Display=
ID
Extension Count/ Section Flag.......=
............................................................... 16
Table 2‑8: Display=
ID
Checksum............................=
......................................................................... <=
/span>17
Table 3‑1: Data Bl=
ock Tag
Allocation..........................=
................................................................... =
19
Table 3‑2: Data Bl=
ock
Format..............................=
...........................................................................=
20
Table 4‑1: Product
Identification Data Block...........=
....................................................................... 21
Table 4‑2: Manufac=
turer/
Vendor ID Format....................=
.............................................................. 22
Table 4‑3: Product=
ID Code
Format..............................=
.................................................................. <=
/span>22
Table 4‑4: Serial =
Number
Format..............................=
...................................................................... 22
Table 4‑5: Week &a=
mp; Year
of Manufacture or Model Year Format.=
.................................................. 23
Table 4‑6: Product=
ID
String and Size.....................=
........................................................................ =
span>23
Table 4‑7: Display
Parameters Data Block...............=
....................................................................... 24
Table 4‑8: Image S=
ize..........................................=
...........................................................................=
24
Table 4‑9: H. &=
; V.
Pixels (Native Format)..............=
........................................................................ =
span>25
Table 4‑10: Feature
Support Flags.......................=
...........................................................................=
25
Table 4‑11: Transf=
er
Characteristic......................=
...........................................................................=
26
Table 4‑12: Aspect=
Ratio..........................................=
...................................................................... 26
Table 4‑13: Color =
Bit
Depth...............................=
...........................................................................=
. 27
Table 4‑14: Color
Characteristics Data Block Structure=
.................................................................. <=
/span>28
Table 4‑15: Ten-bi=
t Binary
Fraction Representation (Examples)..=
................................................... 29
Table 4‑16: Video =
Timing
Modes Data Block....................=
............................................................. 30
Table 4‑17: Type I
‘Detailed’ Timing Data Block.......................................................................=
.... 31
Table 4‑18: Type I
Detailed Timing Descriptor..........=
..................................................................... 31
Table 4‑19: Type II
Detailed Timing Data Block..........=
.................................................................. <=
/span>35
Table 4‑20: Type II
Detailed Timing Descriptor..........=
................................................................... =
35
Table 4‑21: Type I=
II Short
Timing Data Block...................=
............................................................. 36
Table 4‑22: Type I=
II Short
Timing Descriptor...................=
.............................................................. 36
Table 4‑23: Type I=
V Short
Timing Data Block...................=
............................................................ =
37
Table 4‑24: Suppor=
ted
Video Timing Modes Data Block.......=
......................................................... =
PAGEREF
_Toc184735154 \h =
38
Table 4‑25: Suppor=
ted VESA
Timings Standard Data Block.........=
.................................................. 39
Table 4‑26: Suppor=
ted CEA
Timing Standard Data Block..........=
.................................................... 41
Table 4‑27: Video =
Timing
Range Limits Data Block.............=
.......................................................... =
PAGEREF
_Toc184735157 \h =
44
Table 4‑28: Serial=
Number
Data Block..........................=
................................................................. =
span>45
Table 4‑29:
General-Purpose ASCII String Data Block................................................................... 46
Table 4‑30: Displa=
y Device
Data Block..........................=
................................................................ 47
Table 4‑31: Display
Technology & Sub-type Codes.....=
.................................................................. <=
/span>47
Table 4‑32: Device
Operating Modes Codes (upper four bits of byte 04h)..................................... 48
Table 4‑33: Device
Operating Mode Flag Bits (lower four bits of byte 04h)................................... 49
Table 4‑34: Device=
Native
Pixel Format Bytes..................=
............................................................. 49
Table 4‑35: Display
Physical Aspect Ratio & Orientation............................................................... <=
/span>50
Table 4‑36: Subpix=
el
Information Codes (byte offset 0Bh).=
........................................................... <=
!--[if supportFields]> =
PAGEREF
_Toc184735166 \h =
51
Table 4‑37: Horizo=
ntal and
Vertical Pixel Pitch................=
.............................................................. 52
Table 4‑38: Color =
Bit
Depth...............................=
...........................................................................=
. 52
Table 4‑39: Respon=
se Time..........................................=
.................................................................. <=
/span>53
Table 4‑40: Interf=
ace
Power Sequencing Data Block Format..=
........................................................ 58
Table 4‑41: Transf=
er
Characteristics Data Block..........=
................................................................... =
60
Table 4‑42: Example
Luminance Measurements..............=
.............................................................. 61
Table 4‑43: Exampl=
e Values
for Display Transfer Characteristic Data Block White Curve, Resulting from
Luminance Measurements as Given in Above Table.................................................................=
................. 62
Table 4‑44: Comple=
te
Display Transfer Characteristic Data Block Contents Using Example Values Gi=
ven
Above 63
Table 4‑45: Display
Interface Data Block................=
....................................................................... 64
Table
4‑46: Interface Type Codes....=
...........................................................................=
................... 64
Table
4‑47: Analog Interface Subtype Codes.....................................................................=
............ 65
Table 4‑48: Interf=
ace
Standard Version/Release............=
................................................................. =
span>65
Table 4‑49: Suppor=
ted
Interface Color Depth...............=
.................................................................. <=
/span>65
Table 4‑50: Content
Protection..........................=
...........................................................................=
.. 66
Table 4‑51: Content
Protection Standard Version/Release.=
............................................................. 66
Table 4‑52: Spread
Spectrum Information................=
...................................................................... 67
Table 4‑53: LVDS
(generic), Voltage & Color Mapping =
PAGEREF
_Toc184735183 \h =
67
Table 4‑54: LVDS
(generic), Timing Signal Settings...=
.................................................................... 68
Table 4‑55: Propri=
etary
Digital Interface, Timing Signal Settings.................................................... =
PAGEREF
_Toc184735185 \h =
68
Table 4‑56: Stereo=
Display
Interface Data Block................=
............................................................ =
69
Table 4‑57: Stereo
Interface Method Codes..............=
...................................................................... 69
Table 4‑58: Stereo=
Display
Interface Data Block for Field Sequential Stereo................................. 70
Table 4‑59: Stereo=
Display
Interface Data Block for Side-by-side Interleaved Stereo.................... 70
Table 4‑60: Stereo=
Display
Interface Data Block for Pixel Interleaved Stereo................................ 71
Table 4‑61: Stereo=
Display
Interface Data Block for Dual Interface Left and Right Separate......... 71
Table 4‑62: Stereo=
Display
Interface Data Block for Multiview..=
................................................... 72
Table 4‑63: Stereo=
Display
Interface Data Block for Proprietary Stereo Interface Methods............ 73
Table 4‑64: Vendor
Specific Data Block.................=
....................................................................... 74
Preface
Intellectual Property
Copyright © 2007, Video Electronics Standards Association. All rights reser= ved.
While every precaution has been taken in the preparati= on of this standard, the Video Electronics Standards Association and its contribu= tors assume no responsibility for errors or omissions, and make no warranties, expressed or implied, of functionality or suitability for any purpose.
Trademarks
All trademarks used within this document are the prope= rty of their respective owners. VESA, CVT, DDC, DisplayID, DMT, E-DDC, EDID, E-EDI= D, FPDM, GTF, MCCS, MDDI and NAVI are trademarks of the Video Electronics Stan= dard Association.
CEA is a trademark of the Consumer Electronics Associa= tion
CIE is a trademark of the International Commission= on Illumination.
DVI is a trademark of the Digital Display Working Grou= p
HDCP (content protection standard) is from Digital Con= tent Protection, LLC, www.digital-cp.com.
HDMI (www.hdmi.org) and High Definition Multimedia Interface are trademarks of HDMI Licensing, LLC.=
I2C is a trademark owned by Philips.
PenTile Matrix is a registered trademark of Clairvoyan= te, Inc.
TMDS is a trademark of Silicon Image.
Patents
VESA draws attention to the fact that it is claimed= that compliance with this specification may involve the use of a patent or other intellectual property right (collectively, “IPR”) concerning DisplayID. VESA takes no position concer= ning the evidence, validity, and scope of this IPR.
Attention is drawn to the possibility that some of = the elements of this VESA Specification= may be the subject of IPR other= than those identified above. VESA must not be held responsible for identifying a= ny or all such IPR, and has made no inquiry into the possible existence of any such IPR.
THIS SPECIFICA=
TION
IS BEING OFFERED WITHOUT ANY WARRANTY WHATSOEVER, AND IN PARTICULAR, ANY
WARRANTY OF NON-INFRINGEMENT IS EXPRESSLY DISCLAIMED. ANY IMPLEMENTATION OF
THIS SPECIFICATION MUST BE MADE
ENTIRELY AT THE IMPLEMENTERR=
17;S
OWN RISK, AND NEITHER VESA, NOR ANY OF ITS MEMBERS
OR SUBMITTERS, MUST HAVE ANY
LIABILITY WHATSOEVER TO ANY IMPLEME=
NTER
OR THIRD PARTY FOR ANY DAMAGES OF ANY NATURE WHATSOEVER DIRECTLY OR INDIREC=
TLY
ARISING FROM THE IMPLEMENTATION OF THIS SPECIFICATION.
Clarifications and application notes to support this standard may be written. To obtain the latest standard and any support documentation, contact VESA.
If you have a product which incorporates DisplayID or = any of the previous EDID definitions, you should ask the company that manufactured your product for assistance. If you are a manufacturer, VESA can assist you with any clarification you may require. All comments or reported errors sho= uld be submitted in writing to VESA using one of the following methods.
·
Fax &nb=
sp; : &=
nbsp; 408-957
9277, direct this note to Technical=
·
e-mail: =
;
·
mail: &=
nbsp; Technical
&= nbsp; Vi= deo Electronics Standards Association
&=
nbsp;
&=
nbsp;
Acknowledgements
This document would not have been possible without the efforts of the VESA Display Systems Committee’s DisplayID Task Group.= In particular, the following individuals and their companies have contributed significant time and knowledge.
Syed Athar Hussai= n &= nbsp; &nbs= p; AMD &= nbsp; &nbs= p; Task Group Editor
Joe Goodart &= nbsp; &nbs= p; &= nbsp; Dell
James R. Webb &= nbsp; &nbs= p; &= nbsp; &nbs= p; DisplayLabs &= nbsp; Task Group Vice-chair
Bob Myers &= nbsp; &nbs= p; &= nbsp; Hewlett-Packar= d &= nbsp; Task Group Chair
Chandra Konduru =
&nb=
sp; Intel
Matt Sottek&=
nbsp; &nbs=
p; &=
nbsp; &nbs=
p; Intel
Christian Hofmann &nbs=
p; &=
nbsp; Kontron
Josef Trautwein &=
nbsp; &=
nbsp; &nbs=
p; &=
nbsp; Kontron
David Cook&n=
bsp;  =
; &n=
bsp;  =
; NVIDIA
Gerrit Slavenburg &nbs=
p; &=
nbsp; NVIDIA
William Tsu&=
nbsp; &nbs=
p; &=
nbsp; &nbs=
p; NVIDIA
Glenn Adler =
&nb=
sp; =
&nb=
sp; Philips
Ian Miller &= nbsp; &nbs= p; &= nbsp; Miller Consulting &nb= sp; Member Emeritus
Robert Blanchard<= span style=3D'mso-tab-count:3'> &= nbsp; &nbs= p; Sony
Alain d’Hautecourt &= nbsp; &nbs= p; = ViewSonic
December 13, 2007 = ; Initial release of the standard
This specification, henceforth referred to as DisplayI=
D,
defines a file format and data structures for describing physical and
performance attributes and supported timings. It also provides other releva=
nt
information regarding a display product to enable the video source, driving
that display to automatically configure itself for optimum display usage. At least one variable length data
structure (the base DisplayID) must be provided under this system intended to provide basic identific=
ation,
features, supported timings, and other information regarding a given display
product to its host or video source device.
A method is also described for extending this basic information set through additional variable length structures, referred to = as “DisplayID Extensions,” comprising various forms of “data blocks.” The DisplayID = data structure is independent of the communication protocol (Video Interface) us= ed between the host and display product.