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New DisplayPort 1.4 Standard Can Drive 8K Monitors Over A USB Type-C Cable (arstechnica.com)

Posted by BeauHD on from the 7,680-x-4,320 dept.

AmiMoJo writes: VESA has finalized and released the DisplayPort 1.4 spec, which can drive 60Hz 8K displays and supports HDR color modes at 5K and 8K. The physical interface used to carry DisplayPort data -- High Bit Rate 3 (HBR3), which provides 8.1Gbps of bandwidth per lane -- is still the same as it was in DisplayPort 1.3. The new standard drives higher-resolution displays with better color support using Display Stream Compression (DSC), a "visually lossless" form of compression that VESA says "enables up to [a] 3:1 compression ratio." This data compression, among other things, allows DisplayPort 1.4 to drive 60Hz 8K displays and 120Hz 4K displays with HDR "deep color" over both DisplayPort and USB Type-C cables. USB Type-C cables can provide a USB 3.0 data connection, too.

5 of 156 comments (clear)

  1. "visually lossless" sounds a lot like lossy... by Anonymous Coward · · Score: 5, Insightful

    Call it what it is. Don't break terminology for marketing.

    1. Re:"visually lossless" sounds a lot like lossy... by rh2600 · · Score: 3, Insightful

      Agreed... 'visually' lossless for images is a bit like saying 320kbps MP3s are 'audibly' lossless for music... Something is either lossless or not, it's a binary...

    2. Re:"visually lossless" sounds a lot like lossy... by TeknoHog · · Score: 2, Insightful

      This. I thought the whole idea of digital display connections was to make things bit-exact. Let's just go back to VGA and the fun of adjusting displays to the signal. Actually, let's go all the way back to analogue computers while we're at it.

      --
      Escher was the first MC and Giger invented the HR department.
    3. Re:"visually lossless" sounds a lot like lossy... by Nethemas+the+Great · · Score: 5, Insightful

      In the medical field this is not meaningless. If a radiologist missed the cancer, and the lawyers find that he was using a "lossy" display there's a real possibility of a lawsuit. This is why diagnostic imaging is almost universally stored in a lossless format. The three main choices being uncompressed, JPEG process-14, or JPEG2000 Lossless.

      --
      Two of my imaginary friends reproduced once ... with negative results.
    4. Re:"visually lossless" sounds a lot like lossy... by chuckugly · · Score: 3, Insightful

      Very true, however if you have to choose between 30fps and shallow color (which is brutally throwing away a fixed amount of data) or an algorithm that can much more intelligently decide which parts of a 60fps HDR stream matter least, the 'lossy' version is very likely to look better and exhibit better fidelity with a 60fps HDR uncompressed original, even if nothing is 'lost' in the standard color 30fps version after the downconversion.