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SuperMHL to support 8k video at 120Hz... with 4:2:0 subsampling
  • The MHL consortium announced yet another display connector standard named "SuperMHL", which is meant to address the (urgent?) demand for 8k video transmission at 120Hz (max for HDMI 2.0: 8k @ 24Hz, max for DisplayPort 1.3: 8k @ 60Hz) . SuperMHL is meant to primarily use USB C-type connectors.

    Just like HDMI and DisplayPort, SuperMHL is not specified for transmitting full 4:4:4 color information at 8k resolution.

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  • If you ask me - I am tired of all this.

    Make one simple standard - SSI (Scalable Serial Interface). That could work from one wires pair up to 32 wires pairs (ala PCI-E). And also each pair can carry power upon request.

    Make low level super simple, not like USB. And use it for every connections, from home network to attaching your active speakers (and providing them all power).

  • Well, on the lowest physical level we already have sort of a "common denominator", with PCI express, USB 3.1, mSATA, M.2, XQD, Thunderbolt etc. all using basically the same signaling methods for their individual serial channels. But everything atop that is subject to the usual "patents arms race" where every company thinks it might be able to create an eternal source of income by defining a standard of its own. In 2003, Intel did so for display connections based on PCI express with SDVO.

  • Well, on the lowest physical level we already have sort of a "common denominator", with PCI express, USB 3.1, mSATA, M.2, XQD, Thunderbolt etc. all using basically the same signaling methods for their individual serial channels.

    They are similar, but not same. Low level protocols differ significantly.