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Microsoft Windows Logo Program System and Device Requirements  —  99

The monitor also must transmit an EDID structure containing unique ID Manufacturer Name and ID Product Code identifiers, plus all required fields, as defined in Section 3 of VESA Enhanced Extended Display Identification Data Standard (E-EDID), Release A.

For analog CRTs, EDID content must indicate at least one VESA mode at 75 Hz, or better, for each resolution supported.

Mobile PC Note Mobile and other all-in-one systems are not required to support DDC monitor detection. Displays that are attached and connected using an internal interface are not required to provide EDID data identification. This exception applies to all DDC- and EDID-related requirements in this chapter.

All monitors must support E-EDID by implementing an EDID data structure, which includes the following:

Set preferred mode bit for all monitor types.

Include timing data for the preferred display mode in Timing #1.

For an LCD or other fixed-format display, this would be the native mode of the panel. For other display types, this is the optimal display mode, which is based on the size and capabilities of the device, and must meet the requirements for refresh rates defined in this chapter.

Implement monitor descriptors:

Monitor range limits

Monitor name

Note: The required support defined in Version 3.0 of the DDC standards is also defined in the earlier version and revisions of these standards. As such, the Version 3.0 standards provide the correct references for Windows XP.

B4.2.4.2 Monitor associates an ICC profile

Windows supports devices that create standard RGB (sRGB) output by default. Devices with an output other than sRGB must install (via a monitor INF) an ICC profile appropriate to the preferred display resolution (as identified in the EDID data) at 32 bpp. For an LCD or other non-CRT display device, the profile should be based on the native display mode (resolution and color depth) for which the display is designed.

Mobile PC Note: Because most Mobile PCs do not support Plug and Play for their installed LCD panel, the ICC profile must be installed manually by using an appropriate monitor INF. OEMs should install the correct configuration as part of the operating system preinstall process. If necessary, the INF will be available to the user for manual reinstallation. Mobile PCs with Double Supertwisted Nematic (DSTN) or reflective LCD panels do not require ICC profiles.

The ICM APIs and functionality are defined in the Microsoft Platform SDK and the Windows DDK. The requirements for sRGB are defined in IEC 61966-2-1 Multimedia systems and equipment – Colour measurement and management – Part 2-1: Colour management – Default RGB colour space – sRGB, listed in “Monitors References.”

B4.2.4.3 Minimum graphics resolution, based on monitor size

These specific monitor sizes are not required; rather, they show the required pixel format for a given size monitor:

14-inch to 15-inch external monitor = 800 × 600, noninterlaced.

Mobile PC Note: Built-in mobile PC display = 800 × 600, noninterlaced.

17-inch external monitor or 13-inch to 15-inch external LCD = 1024 × 768, noninterlaced.

19-inch and 21-inch external monitor or external LCDs larger than 16 inches = 1280 × 1024, noninterlaced.

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