DisplayPort 2.0 on the way with support for 16K HDR monitors, dual 8K HDR monitors
By late 2020 we should see the first products supporting a new DisplayPort specification that will allow users to run monitors with resolutions of up to 16K at 60Hz and to carry data at rates of over 70 Gigabits per second, according to the Video Electronics Standards Association (VESA). The new DisplayPort 2.0 will offer three times the bandwidth of the current DP 1.4 and is being introduced to prepare for the move to higher screen resolutions and to meet the coming demand for multiple 8K monitors connected to the same computer.
Devices using the new standard will be able to run one 16K display at 120Hz and 30 bits per pixel using 4:4:4 color in HDR, two 8K displays working at 120Hz and 30 bits per pixel using 4:4:4 color in HDR or three 4K displays working at 90Hz with the same color standards as the 16K and 8K displays.
As well as the existing DisplayPort plug, devices will be able to gain the new features of 2.0 using a USB Type-C connector via a DP Alt Mode. For more information see the VESA and the DisplayPort websites.
VESA Publishes DisplayPort™ 2.0 Video Standard Enabling Support for Beyond-8K Resolutions, Higher Refresh Rates for 4K/HDR and Virtual Reality Applications
DisplayPort 2.0 enables up to 3X increase in video bandwidth performance (max payload of 77.37 Gbps); new built-in features enable improved user experience, greater flexibility and improved power efficiency
The Video Electronics Standards Association (VESA®) today announced that it has released version 2.0 of the DisplayPort™ (DP) audio/video standard. DP 2.0 is the first major update to the DisplayPort standard since March 2016, and provides up to a 3X increase in data bandwidth performance compared to the previous version of DisplayPort (DP 1.4a), as well as new capabilities to address the future performance requirements of traditional displays. These include beyond 8K resolutions, higher refresh rates and high dynamic range (HDR) support at higher resolutions, improved support for multiple display configurations, as well as improved user experience with augmented/virtual reality (AR/VR) displays, including support for 4K-and-beyond VR resolutions.
The advantages of DP 2.0 are enjoyed across both the native DP connector as well as the USB Type-C connector, which carries the DP audio/video signal through DisplayPort Alt Mode. DP 2.0 is backward compatible with previous versions of DisplayPort and incorporates all of the key features of DP 1.4a, including support for visually lossless Display Stream Compression (DSC) with Forward Error Correction (FEC), HDR metadata transport, and other advanced features. The increased video bandwidth performance of DP 2.0 carried over the USB-C connector enables simultaneous higher-speed USB data transfer without compromising display performance. DP 2.0 leverages the Thunderbolt™ 3 physical interface (PHY) layer while maintaining the flexibility of DP protocol in order to boost the data bandwidth and promote convergence across industry-leading IO standards.
In addition, the new data rates of DP 2.0 come with a display stream data mapping protocol common to both single-stream transport and multi-stream transport. This common mapping further facilitates multi-stream transport support of DP 2.0 devices for a single DP port on the source device to drive multiple displays either via a docking station or daisy-chainable displays. First products incorporating DP 2.0 are projected to appear on the market by late 2020.
“DP 2.0 offers differentiated end-to-end user experiences, across a multitude of market segments, such as productivity and gaming, as well as wider end-to-end interoperability with various connectivity options. It sets a new paradigm for display interface specifications by providing scalability from power-efficient small form-factor displays, to high-resolution and high-refresh-rate large form-factor displays,” said Syed Athar Hussain, VESA Board Vice Chairman and Display Domain Senior Fellow, AMD.
“Intel’s contribution of the Thunderbolt™ PHY layer specification to VESA for use in DP 2.0 is a significant milestone making today’s simplest and most versatile port also the highest performing for display,” said Jason Ziller, General Manager, Client Connectivity Division at Intel. “By collaborating with VESA, we’re enabling common building block technologies to come together across a wide range of devices and increasing compatibility to deliver better experiences to consumers.”
Higher-resolution Demands Mandate New Developments in Display Interfaces
Industry efforts are underway to push video broadcasting beyond 4K/Ultra HD resolutions, while 8K televisions and PC monitors are already beginning to hit the market. For example, the Japan Broadcasting Company (NHK) has announced plans to broadcast the 2020 Summer Olympics in 8K, and has already begun to broadcast 8K content to viewers.
At the same time, gaming platforms are pushing the envelope on immersive gameplay, driving demand for higher resolutions and video frame rates across PC, laptop, and mobile platforms, including smart phones and VR headsets. Further developments in display interfaces are needed to address these developments.
Tripling Data Bandwidth Performance
The previous version of DisplayPort, v1.4a, provided a maximum link bandwidth of 32.4 Gbps, with each of the four lanes running at a link rate of 8.1 Gbps/lane. With 8b/10b channel coding, that equates to a maximum payload of 25.92 Gbps. DP 2.0 increases the maximum link rate to up to 20 Gbps/lane and features more efficient 128b/132b channel coding, delivering a maximum payload of 77.37 Gbps – up to a three-fold increase compared to DP 1.4a. This means that DP 2.0 is the first standard to support 8K resolution (7680 x 4320) at 60 Hz refresh rate with full-color 4:4:4 resolution, including with 30 bits per pixel (bpp) for HDR-10 support.
Maximizing Gains on USB-C connector
The performance increases enabled by DP 2.0 are through both native DP connectors and the USB-C connector via DP Alt Mode. USB-C allows a single connector for USB data, video data and power. If simultaneous support of SuperSpeed USB data and video is needed, the significantly increased data rates enabled by DP 2.0 give users the ability to have power and SuperSpeed USB data at the same time as super-high-resolution video.
DP 2.0 Configuration Examples
With the increased bandwidth enabled by DP 2.0, VESA offers a high degree of versatility and configurations for higher display resolutions and refresh rates. In addition to the above-mentioned 8K resolution at 60 Hz with HDR support, DP 2.0 across the native DP connector or through USB-C as DisplayPort Alt Mode enables a variety of high-performance configurations:
Single display resolutions
One 16K (15360×8460) display @60Hz and 30 bpp 4:4:4 HDR (with DSC)
One 10K (10240×4320) display @60Hz and 24 bpp 4:4:4 (no compression)
Dual display resolutions
Two 8K (7680×4320) displays @120Hz and 30 bpp 4:4:4 HDR (with DSC)
Two 4K (3840×2160) displays @144Hz and 24 bpp 4:4:4 (no compression)
Triple display resolutions
Three 10K (10240×4320) displays @60Hz and 30 bpp 4:4:4 HDR (with DSC)
Three 4K (3840×2160) displays @90Hz and 30 bpp 4:4:4 HDR (no compression)
When using only two lanes on the USB-C connector via DP Alt Mode to allow for simultaneous SuperSpeed USB data and video, DP 2.0 can enable such configurations as:
Three 4K (3840×2160) displays @144Hz and 30 bpp 4:4:4 HDR (with DSC)
Two 4Kx4K (4096×4096) displays (for AR/VR headsets) @120Hz and 30 bpp 4:4:4 HDR (with DSC)
Three QHD (2560×1440) @120Hz and 24 bpp 4:4:4 (no compression)
One 8K (7680×4320) display @30Hz and 30 bpp 4:4:4 HDR (no compression)
“Being an open standards body comprising more than 280 member companies across the electronics value chain gives VESA a unique vantage point to anticipate the needs of the display market several years out and add new capabilities to our standards ahead of demand,” stated Alan Kobayashi, VESA Board Chair and VESA DisplayPort Task Group Chair. “DP 2.0 represents one of our most significant milestones in the history of DisplayPort, and is the culmination of several years’ effort and major enhancements to this ubiquitous standard. Like the previous versions of DisplayPort that helped pave the way for major inflection points in video technology such as UHD, 4K, 5K, video over USB-C and HDR, DP 2.0 will help take the industry to the next level – enabling even higher frame rates and resolutions up to and beyond 8K, greater flexibility in display configurations including multiple monitor setups, as well as improved power efficiency.”
Improving Power Efficiency
DP 2.0 also supports VESA’s new Panel Replay capability, which is designed to optimize the power envelope and thermal performance of smaller end devices, such as all-in-one PCs and laptops, with higher resolution displays. Similar to the Panel Self Refresh capability in Embedded DisplayPort (eDP), Panel Replay incorporates a partial update feature that enables the system video processor, or GPU, to update only the portion of the display that has changed since the video frame update, thus saving system power. Advantages include the ability to recharge a device more quickly while at the same time using it.
The Video Electronics Standards Association (VESA) is an international, non-profit standards association representing a global network of more than 280 hardware, software, computer, display and component manufacturers committed to developing and promoting the electronics industry. For 30 years, VESA has created and supported simple, universal and cross-product solutions for today’s video and electronics industry. The association’s standards include DisplayPort™, the industry replacement for DVI, LVDS and VGA. DisplayPort utilizes a state-of-the-art digital protocol and provides an expandable foundation to enable astonishing digital display experiences. For more information on VESA, please visit http://www.vesa.org/.
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