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New HDMI Mode Will Allow USB-C Connections (techhive.com)

An anonymous Slashdot reader quotes a report from TechHive: On Friday, HDMI Licensing announced a new cable standard that connects USB-C and HDMI devices... The idea, naturally enough, is to to develop an HDMI-to-USB Type-C cable that ties together the most common cabling protocols in both the PC and consumer electronics industries, eliminating the need for an adapter or special silicon. Source devices like PCs, tablets, and smartphones will be able to output HDMI video and multi-channel audio from a USB-C port, just as they can now with DisplayPort.

"The USB Type-C connector is gaining traction in the mobile and PC markets," said HDMI Licensing, LLC president Rob Tobias. "Consumers expect to easily connect these devices to displays with a USB Type-C to HDMI cable and utilize the capabilities and features of native HDMI. This specification will also result in more source devices incorporating HDMI," which already total about 6 billion, he said.

HDMI Licensing expects to see products launching with this new technology "early next year".

26 of 85 comments (clear)

  1. This will never take off since it is closed... by Anonymous Coward · · Score: 5, Informative

    and has abusive licensing fees. My company has been talking about adding this to future products, and they want more money for this than it costs us to add an HDMI port and our profit, combined.

    1. Re:This will never take off since it is closed... by Anonymous Coward · · Score: 2, Interesting

      It will take off because the cost of this will be born by the cable buyer instead of the laptop or computer vendor.

      Meanwhile HDMI 1.4 remains the best option to connect rec.709 monitors (eg TN and IPS displays at 1920x1200) while Displayport is the only option to connect 4K and 5K monitors with rec.2020 colorspace (which no monitor supports yet.)

      It will be a while before it happens, but what this means is that all motherboards will only have USB-C connectors on them. If you want to connect USB 1.1 or USB 2.0 devices, you will need a USB hub that connects into a USB-C 3.1 port.

    2. Re:This will never take off since it is closed... by mlts · · Score: 2

      That is a downer.

      I've thought the ideal would be something that can take USB-C, Thunderbolt, HDMI, DisplayPort, an IEEE1394 descendant, and a smart, two-way charging protocol, and have it just plain work. Let the devices figure out if they need to use a USB style tree configuration, a Thunderbolt or IEEE 1394 daisy chain, a direct negotiation for HDCP video, or just a direct connect to figure what device had power, what was requesting, and negotiate from there.

      Other than the power aspect, maybe the next "universal" connector should be one with wires for power, as well as two fiber optic leads, and have this done in an idiot-resistant, high insertion/removal cycle connector. From there, devices can negotiate what protocol to use over the glass, and how power flows.

    3. Re:This will never take off since it is closed... by kheldan · · Score: 2

      Hear, hear.

      Now, if they did this with DisplayPort, that'd be a different story, since it's (last time I checked) royalty-free.

      --
      Are YOU using the TOOL, or is the TOOL using YOU? Think about it!
  2. Woohoo Standards! by bstrobl · · Score: 3, Informative

    Honestly the USB-IF should have come up with their own official display profile at this stage, this is becoming ridiculous. We now have Displayport, MHL and HDMI as Alt-modes as well as displayport over thunderbolt carried by type-c. Ugh.

    Connector is great and all but the current implementation is trash.

    My guess is only one gets used while rest will be ignored, most likely Displayport due to existing implementations as well as Thunderbolt requirements and more up-to-date versions (DP 1.3 vs HDMI 1.4 only). No manufacturer will want to pay additional money in order for all of them to be supported (increased licensing costs as well as more expensive chipsets).

    1. Re:Woohoo Standards! by blindseer · · Score: 2

      After reading up on this some today I see it's more complicated than just having multiple competing video display modes on one connector, the cables will also be different.

      A USB-C cable may not necessarily be able to carry HDMI unless specifically designed to do so. For example, a Thunderbolt 3 cable, which uses the USB-C connector, will fall back to USB-C if either device does not support the faster Thunderbolt protocol. Such cables will certainly be more expensive than a cable that does only USB-C. Thunderbolt is backward compatible with DisplayPort and so we know that one cable will do USB 3.1, Thunderbolt 3, and DisplayPort 1.2 (or perhaps newer). I found nothing to suggest such a cable will be capable of also supporting HDMI, MHL, or whatever other protocol that might share this port.

      I see that the USB-C spec allows for a passive cable which I assume would allow for any protocol to pass, but there is a cost is in limited bandwidth and length. For example, one can use a passive cable for Thunderbolt 3 but the cable is likely limited to one meter (instead of three), and 5 Gb/s (instead of 40 Gb/s). A passive USB-C cable would also be limited to USB Gen1 speeds, not the faster Gen2. If HDMI is similarly limited then one might get only a 1080p image instead of 5K, assuming it works at all.

      Not only does this make HDMI on USB-C appear to be doomed to fail but it also adds further confusion to the use of USB-C by consumers and may therefore make USB-C less attractive. USB in all its various versions is complicated enough before adding the alternate modes. There are three types of connectors (A, B, C), in three sizes for some (standard, mini, micro), in five different speeds (1.5M, 12M, 480M, 5G, and 10G), and I lost count on how many levels of voltage and amperage.

      Calling this "ridiculous" is about right.

      --
      I am armed because I am free. I am free because I am armed.
  3. Hellloooooo DRM! by Anonymous Coward · · Score: 2, Insightful

    Yeay, now we get to have DRM stuff on our USB chipsets!
    Yeay!
    I'm oh so happy!

  4. DP 1.3 vs. HDMI 1.4 by pushing-robot · · Score: 4, Informative

    Source devices like PCs, tablets, and smartphones will be able to output HDMI video and multi-channel audio from a USB-C port, just as they can now with DisplayPort.

    Yes, and they can do 4K @ 120Hz over DisplayPort's USB-C implementation, or 4K @ 30Hz over ours! Just the same!

    --
    How can I believe you when you tell me what I don't want to hear?
  5. Complexity collapse by Sqreater · · Score: 2

    Oh, great, now how many cables and connector types are we supposed to keep track of in order to correctly connect our devices? I've set aside an entire room for cable variants now.

    --
    E Proelio Veritas.
    1. Re:Complexity collapse by Guy+Harris · · Score: 2

      Oh, great, now how many cables and connector types are we supposed to keep track of in order to correctly connect our devices?

      Just one. That's the point.

      One type of connector - USB-C - but multiple types of cables (USB Type-C to HDMI, USB Type-C to USB Type-B for older devices such as disks, etc.).

    2. Re:Complexity collapse by blindseer · · Score: 3, Interesting

      No the point is to collect HDMI licensing fees.

      Precisely. It's rare to see HDMI on anything new, at least in my experience. They already collected their fee on the devices they've sold that included the port. They will collect in the future on anyone that buys an adapter that wants to preserve compatibility with these older devices, assuming that it's not replaced too.

      I see this as an attempt to hang on a bit longer to collect their fees. They are hoping that people will seek this capability out in order to maximize backward compatibility and/or manufacturers will be willing to pay the fee so as to add another feature to their device in order to grab a few more buyers that are checklist shoppers.

      The only problem this solves is the diminishing income they have from fewer new devices with HDMI ports.

      --
      I am armed because I am free. I am free because I am armed.
    3. Re:Complexity collapse by Desler · · Score: 2

      Precisely. It's rare to see HDMI on anything new, at least in my experience.

      You mean except for every single TV?

  6. Re:HDMI is from the world of USB 2.0 and 1080i. by ITRambo · · Score: 2

    And yet, HDMI is on hundreds of millions of HD televisions that aren't going anywhere soon.

  7. Re:HDMI is from the world of USB 2.0 and 1080i. by Dahamma · · Score: 2

    Actually, HDMI 2.0a is a much better solution for *most* devices - since most devices are TVs that already support it. 2160p @ 60Hz w/ HDR10 or 12 bit DolbyVision packed in 4:2:2 is WAY more than your eyes will ever perceive from a normal distance.

  8. Re:The Bad with the Good. by Dahamma · · Score: 3, Informative

    HDMI has nothing to do with IP. It does support HDCP - but HDCP is a separate standard. It's not a horrible idea because studios offering UHD movies are not going to magically stop caring about content protection/DRM - all HDMI over USB-C will do is make it easier to create devices that support the existing required protections.

  9. Re:Malicious ads on slashdot by FlyHelicopters · · Score: 2

    Fix your ads yo

    Ad Block... it is the only safe way to browse the web...

  10. Love it. Love it. Love it. by SensitiveMale · · Score: 2

    I can't wait until everything is routed over USB-C.

    Displayport.
    Thunderbolt.
    HDMI.
    USB.
    Everything.

    I especially can't wait until internal hard drives are using USB-C for data and power.

  11. Re:HDMI is from the world of USB 2.0 and 1080i. by blindseer · · Score: 3, Informative

    And yet, HDMI is on hundreds of millions of HD televisions that aren't going anywhere soon.

    Which is readily solved with an inexpensive DP to HDMI adapter cable. The passive DP++ to HDMI cables are less than $10, and active DP to HDMI cables are less than $20. It seems rare to find a new computer that lacks a mini or full sized DP output. Assuming a USB-C connector has a DisplayPort alternate mode then a DP/USB-C to HDMI cable is trivial to produce, and produce cheaply.

    Assuming the USB-C connector has a Thunderbolt alternate mode then one can connect any of a number of PCIe compatible video chips, allowing for HDMI or any other output to match whatever input that display might have. Price will vary based on desired output quality, of course. Given the many cheaper options I expect this to be used rarely, especially to connect to a 1080p or less TV that has nothing better than HDMI to drive it.

    Assuming that the USB-C connector has a MHL alternate mode then HDMI support is included, if I'm reading the spec correctly. I found an adapter that has a micro-USB male connector on one side and female HDMI on the other and claims to use the MHL protocol for less than $10.

    Assuming the USB-C connector has a, quite likely, USB mode then one can find a USB to HDMI adapter already for reasonable price. A quick search shows I can get one for less than $30, which also happens to be a USB-C to HDMI adapter. Adapters with USB-A connectors look to be almost double that but it may just be a matter of not finding the cheapest ones in my search.

    I'm quite certain that the HDMI people are getting paid for the privilege of us using their connector and/or protocol on anything we buy. What they seem to be doing here is wanting us to pay for the privilege of the HDMI protocol on future USB-C devices even if we have no intention of ever using that capability.

    Looks to me like a sneaky way to add a HDMI tax on a device for all for the benefit of the few that would actually use it. As they seem to tax per port then if I have a device that can output HDMI on DP and USB-C then I'm paying double for something I am unlikely to use. As the cost to me is likely less than the $10 I'd expect for an adapter that lacks this feature I can't complain much. What I do see though is a flood of money potentially going their way from the sale of devices with this feature.

    --
    I am armed because I am free. I am free because I am armed.
  12. Re:Love it. Love it. Love it. by blindseer · · Score: 2

    I especially can't wait until internal hard drives are using USB-C for data and power.

    I remember when FireWire was supposed to come to internal hard drives for data and power. I still come across PCs at work with an internal FireWire port for this reason. Obviously it didn't happen. Lots of things killed it.

    FireWire isn't dead yet though, I still see it on professional audio equipment.

    Here's an idea, let's do FireWire over USB-C. Too much? Well, we passed "too much" on USB-C a long time ago.

    --
    I am armed because I am free. I am free because I am armed.
  13. Re:HDMI is from the world of USB 2.0 and 1080i. by jedidiah · · Score: 2

    I'm not sure why you would want to really. You gain exactly zilch there.

    The 80s called, they want to talk to you about daisy chaining and how stupid and annoying it was.

    --
    A Pirate and a Puritan look the same on a balance sheet.
  14. Re:Love it. Love it. Love it. by BESTouff · · Score: 2

    I can't wait until everything is routed over USB-C.

    You don't get it. Everything will be routed through USB-C, but it will be only one protocol at a time. So you will have to carefully choose your port, cable and device that go together if you ever want Displayport, Thunderbolt, HDMI or whatever else which isn't plain USB working correctly.

  15. USB-C is a bad spec by bernywork · · Score: 4, Insightful

    After Anker recalled their USB-C cables the other day, there was an article on The Register about it, the comments section had a great bunch of comments in it including: "it's a design error An electrical specification which allows multiple, software-controlled supply voltages, but does not require connected devices to tolerate the highest available voltage. What could possibly go wrong?" I can see a lot of fried TVs when people push 20A at 5V into their TVs because of a bad cable. Anyway, comments section worth a read: http://forums.theregister.co.u...

    --
    Curiosity was framed; ignorance killed the cat. -- Author unknown
    1. Re:USB-C is a bad spec by thegarbz · · Score: 3, Insightful

      USB-C Spec is fine. The problem is not adhering to the spec which could be done in any scenario.

      e.g. The original USB spec covered powersupply in great detail. The spec says "No device shall supply (source) current on VBUS at its upstream facing port at any time. From VBUS on its upstream facing port, a device may only draw (sink) current."

      So they redundantly said the same thing twice.
      Let's just say I wouldn't ever recommend buying a hub off ebay or any even slightly shady looking vendor. About 100% of the hubs that people say "don't work" actually apply 5V to the upstream port. I even found a frigging reference design from a Chinese manufacturer of USB hub chips which showed on the schematic a 5V supply connecting to all the upstream and downstream facing ports. Naturally most cheap manufacturers just copy and past the reference design with the cheapest components possible.

      A spec isn't a bad spec just because it's not followed or enforced.

  16. Re:I still haven't seen USB-C anywhere. by DrXym · · Score: 3, Insightful

    I've seen some but they cost way more money than a micro-B. Type-C is a complex standard, with active cables for devices that negotiate bus currents and there are lots of faulty cables and chargers out there. Perhaps that's why enthusiasm for USB type-C appears so underwhelming. It might be superior but micro-B is cheap and most people already have lots of devices, cables & chargers for that spec.

  17. Re:Love it. Love it. Love it. by blindseer · · Score: 2

    I don't know why I bother to reply to an AC but here is your citation:
    http://arstechnica.co.uk/gadge...
    Scroll down to the graphic where the pin out is shown.

    The USB-C alt modes define how the 4 high speed lanes on the port are used. In USB 3.1 mode they are used for 2 pair of RX/TX lanes. In a 2-lane DP mode there is one RX/TX pair of lanes for USB 3.1 and 2 lanes for DP. In 4-lane DP mode all 4 lanes are used for DP data. In Thunderbolt mode all the USB-C high speed lanes are dedicated to PCIe and DP packets, USB 3.1 packets will not share these lanes. I have not seen the spec on how MHL or HDMI use these lanes, I can only assume it is similar to DP mode. In whatever mode the USB-C connector is in there will always be a bidirectional pair of data wires for USB 2.0.

    The mode of the port will be defined by the first cable or device connected to it. Once in a certain mode it will stay there until every device is disconnected. Daisy chaining USB 3 and TB 3 devices will not be allowed. DP and TB devices can be daisy chained only if the DP devices are on the end of the chain. I assume daisy chaining USB and DP devices is allowed but then the USB devices would have to be at the end.

    I imagine it possible to make a cable that converts one USB-C mode to another but it would have to be insanely expensive, convert only one mode to another (and only in one direction), and still be confusing for many users. Even if someone makes one of these magic cables that USB-C port will go to whatever mode that the peripheral, cable, and host all support. This might be DP, MHL, HDMI, USB3, or TB3. It may even be just USB2.0 since that is where they all have a common denominator. The exception is that DP can share the cable with either USB3 or TB3 but again every piece in the chain has to support it, and there are other limits that go with that.

    I was torn with ignoring an AC that may just be trolling to helping to inform someone that was mistaken but was willing to learn. I hope I didn't choose poorly.

    --
    I am armed because I am free. I am free because I am armed.
  18. Re:Do not want! by Trongy · · Score: 2

    The corporate office where I work has many meeting rooms with projectors or TV screens. Typically there are two connectors wireed to the meeting room table - VGA d-sub and HDMI. I will never get the time back which I have spent watching presenters faff around with getting their display working.

    More generally, the problem for the device owner is to have a connecting cable which will work with any foreign display they need to present on. I'd rather use DisplayPort myself, but the most commonly available digital port is HDMI. The sad reality is that USB-C HDMI output is going to be the most frequently used display output from next generation devices.

    MHL uses the same physical connector as HDMI (at the display end) and the average punter isn't going to know if a given display supports MHL. I forsee that in the future, people will have the same problem with USB-c connections. They same physical port supports so many display standards that people who don't read the manual are going to become frustrated figuring out which ones are suppoted on a given device.

    Ideally, I would like to see some sort of wireless display standard that's easy to pair and widely adopted, but that's not happening any time soon.