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VESA publishes full DisplayPort 1.4 spec for USB-C, Thunderbolt 3 use
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MacNN Staff
Join Date: Jul 2012
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The Video Electronics Standards Association (VESA) today announced it has published version 1.4 of the DisplayPort audio/video standard. The first major update to DisplayPort since version 1.3 was released in September 2014, version 1.4 is also the first DP standard to take advantage of VESA's Display Stream Compression (DSC) technology. DSC version 1.2 transport enables up to a 3:1 compression ratio and has been deemed, through VESA membership testing, to be visually lossless.
DisplayPort is a packet-based, extensible protocol for transporting video and audio data. Initially introduced as a new external interface, its flexibility has enabled its adaptation to embedded displays and incorporation into other connectors, like the new reversible USB Type-C interface and Thunderbolt. Its Multi-Stream Transport (MST) capability enables high-resolution support of multiple monitors on a single display interface.
The older DisplayPort 1.3 spec increased the maximum link bandwidth to 32.4 Gbps, with each of four lanes running at a link rate of 8.1 Gbps/lane, a 50 percent increase over the previous DP 1.2a specification. DP 1.3 added extra protocol flexibility to enable more seamless operation over the USB Type-C connector, in the form of the DisplayPort Alt Mode. The increased link rate increased the uncompressed display resolution support up to 5K x 3K (5120x2880), and also upped the MST resolution, enabling simultaneous use of two 4K UHD monitors, each with a pixel resolution of 3840x2160 when using VESA Coordinated Video Timing.
DisplayPort 1.4 builds on the capabilities of the standard's prior incarnations. The use of video transport compression enhances the ability to take advantage of the USB Type-C connector, enabling both high-definition video and USB 3.0, while also facilitating High Dynamic Range (HDR) and 8K video across the DisplayPort or USB-C connector. Additionally, expanded audio transport gives capabilities to the protocol such as 32 audio channels, 1536kHz sample rate, and inclusion of all known audio formats.
The first products utilizing the full DisplayPort 1.4 specification are expected this summer.
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Last edited by NewsPoster; Mar 16, 2016 at 05:02 AM.
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Ham Sandwich
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Originally Posted by NewsPoster
The use of video transport compression enhances the ability to take advantage of the USB Type-C connector, enabling both high-definition video and SuperSpeed USB, while also facilitating High Dynamic Range (HDR) and 8K video across the DisplayPort or USB-C connector.
Well once again the industry is providing false/misleading information.
It's not 8K unless it's 8,000 pixels. Only 7,680 is not 8,000 (8K).
This is another reason why I wish the industry would just transition to simple 2:1 ratios:
2K -> 2048 x 1024
4K -> 4096 x 2048
8K -> 8192 x 4096
These are not much different from 16:10. Actually, cinema widescreen is even closer to 2:1 than 16:10, so really 2:1 would be a happy medium and can literally fulfill the 2K, 4K, 8K designations.
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