Windows 10: VESA Defines DisplayHDR version v1.0 Standard

Brink · Dec 11, 2017

DisplayHDR is industry’s first open HDR specification with a fully transparent testing methodology

SAN JOSE, Calif. – December 11, 2017 – The Video Electronics Standards Association (VESA®) today announced it has defined the display industry’s first fully open standard specifying high dynamic range (HDR) quality, including luminance, color gamut, bit depth and rise time, through the release of a test specification. The new VESA High-Performance Monitor and Display Compliance Test Specification (DisplayHDR) initially addresses the needs of laptop displays and PC desktop monitors that use liquid crystal display (LCD) panels. The first release of the specification, DisplayHDR version 1.0, establishes three distinct levels of HDR system performance to facilitate adoption of HDR throughout the PC market. HDR provides better contrast and color accuracy as well as more vibrant colors compared to Standard Dynamic Range (SDR) displays, and is gaining interest for a wide range of applications, including movie viewing, gaming, and creation of photo and video content.

VESA developed the DisplayHDR specification with the input of more than two dozen active member companies. These members include major OEMs that make displays, graphic cards, CPUs, panels, display drivers and other components, as well as color calibration providers. A list of participating companies is available at www.displayhdr.org.

DisplayHDR v1.0 focuses on LCDs, which represent more than 99 percent of displays in the PC market. VESA anticipates future releases to address organic light emitting diode (OLED) and other display technologies as they become more common, as well as the addition of higher levels of HDR performance. While development of DisplayHDR was driven by the needs of the PC market, it can serve to drive new levels of HDR performance in other markets as well.

Brand Confusion Necessitates Clearly Defined HDR Standard

HDR logos and brands abound, but until now, there has been no open standard with a fully transparent testing methodology. Since HDR performance details are typically not provided, consumers are unable to obtain meaningful performance information. With DisplayHDR, VESA aims to alleviate this problem by:

Creating a specification, initially for the PC industry, that will be shared publicly and transparently;

Developing an automated testing tool that end users can download to perform their own testing if desired; and

Delivering a robust set of test metrics for HDR that clearly articulate the performance level of the device being purchased.

What DisplayHDR Includes

The specification establishes three HDR performance levels for PC displays: baseline (DisplayHDR 400), mid-range (DisplayHDR 600) and high-end (DisplayHDR 1000). These levels are established and certified using eight specific parameter requirements and associated tests, which include:

Three peak luminance tests involving different scenarios – small spot/high luminance, brief period full-screen flash luminance, and optimized use in bright environments (e.g., outside daylight or bright office lighting);

Two contrast measurement tests – one for native panel contrast and one for local dimming;

Color testing of both the BT.709 and DCI-P3 color gamuts;

Bit-depth requirement tests – these stipulate a minimum bit depth and include a simple visual test for end users to confirm results;

HDR response performance test – sets performance criteria for backlight responsiveness ideal for gaming and rapid action in movies by analyzing the speed at which the backlight can respond to changes in luminance levels.

“We selected 400 nits as the DisplayHDR specification’s entry point for three key reasons,” said Roland Wooster, chairman of the VESA task group responsible for DisplayHDR, and the association’s representative from Intel Corp. for HDR display technology. “First, 400 nits is 50 percent brighter than typical SDR laptop displays. Second, the bit depth requirement is true 8-bit, whereas the vast majority of SDR panels are only 6-bit with dithering to simulate 8-bit video. Finally, the DisplayHDR 400 spec requires HDR-10 support and global dimming at a minimum. With this tiered specification, ranging from baseline to high-end HDR performance levels, PC makers will finally have consistent, measurable HDR performance parameters. Also, when buying a new PC, consumers will be able to view an HDR rating number that is meaningful and will reflect actual performance.”

“Developing this specification is a natural expansion of our range of video standards,” said Bill Lempesis, VESA executive director. “Moreover, we are the first standards body to develop a publicly available test tool for HDR qualification, utilizing a methodology for the above-mentioned tests that end users can apply without having to invest in costly lab hardware. Most of the tests require only a colorimeter, which many users already own. Ease of testing was a must-have requirement in order to make DisplayHDR a truly viable, consumer-friendly spec.”

New products complying with the DisplayHDR specification will be demonstrated at the Consumer Electronics Show (CES), January 9-12, 2018 at the Las Vegas Convention Center South Hall, DisplayPort booth #21066.
Click to expand...

Source: VESA Defines New Standard to Help Speed PC Industry Adoption of High Dynamic Range Technology in Laptop and Desktop Monitor Displays | VESA

See also:

Vesa Certified DisplayHDR

Performance Criteria - Vesa Certified DisplayHDR

:)

G.Ilex · Dec 11, 2017

Dock sound problem

It's a 16:10 (VESA standard) monitor or it uses that ratio.

If your monitor supports the CEA resolutions, then you would typically get (Full HD, 1920 x 1080) video with audio if the monitor has speakers

However, if the monitor only supports VESA resolutions your are out of luck the VESA standards do not support audio.

Rowena Cam · Dec 11, 2017

I can’t hear any sound when connecting Windows 10 Mobile to a monitor

I’m trying to use Continuum on my Lumia 950, but when I connect the phone to the monitor, I have no sound.
Click to expand...

Hello Chari,

About your concern, if there is no sound at all from either the phone or the monitor, first double-check the volume and mute settings on both the phone and the monitor. If those are correct, check if your monitor has an audio output port such as a 3.5 mm
jack. If it does, it is likely that the sound is being sent to that – try plugging in headphones or speakers to that jack.

If sound is coming only from the phone and not the external speakers, it is likely that the native resolution of your TV or monitor is one for which audio is not supported. The table below lists all the video resolutions supported by the Lumia 950 and 950XL
phones along with audio support for each resolution. When the 950/950XL is connected to a display with a resolution that is not on this list, the phone will pick the next best resolution that has the same aspect ratio – for example a 1920x1080 image will be
sent to a 4K (3840x2160) display. For all resolutions that do not support audio, the sound will only be heard from the phone or speakers that are connected to the phone.

Resolution
Standard
Audio Support

640x480
CEA
Yes

720x480
CEA
Yes

720x576
CEA
Yes

1280x1024
VESA
No

1280x720
CEA
Yes

1280x768
VESA
No

1280x800
VESA
No

1280x960
VESA
No

1366x768
VESA
No

1400x1050
VESA
No

1440x900
VESA
No

1680x1050
VESA
No

1920x1080
CEA
Yes

1920x1200
VESA
No

Regards.

Windows 10: VESA Defines DisplayHDR version v1.0 Standard

VESA Defines DisplayHDR version v1.0 Standard

VESA Defines DisplayHDR version v1.0 Standard

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