http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/ Engadget Comments for http://www.engadget.com/media/feedlogo.gif http://www.engadget.com en-us Copyright 2012 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 9:56AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 9:58AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:04AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 9:59AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:00AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/I guess for a laptop that would be nice.
I assumed being dual display a desktop would be the primary focus. ]]>Aug 12th 2009 10:18AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:58AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 11:18AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:29PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
It says OS X support but idk about Linux.
EVGA UV+ doesn't support Linux, and they have no plans to add Linux support.]]>Aug 12th 2009 2:56PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://libdlo.freedesktop.org/wiki/HowTo]]>Aug 13th 2009 4:04AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/]]>Aug 12th 2009 9:58AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:03AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
I don't see how this could push those resolutions, anyone care to explain? ]]>Aug 12th 2009 11:06AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
1920x1200 pixels @ 4bytes per pixel = 9,216,000 = 9.2MB = 73Mbpf.

That means that completely uncompressed, the external display at peak USB2 speeds would reach ~6.5FPS. DisplayLink, however, uses compression to achieve slightly better FPS. I currently have the first generation DisplayLink (with poorer, slower compression) and the frame rate is pretty crappy. The next generation that this adapter and the current Lenovo adapter uses promises better refresh rates.

I *believe* that DisplayLink also takes cues from technology like VNC where it actually transfers only "updated" parts of the screen to the adapter which then translates the updates to the screen buffer. Works great for office apps where not much of the screen changes frequently, but terrible for gaming.]]>Aug 12th 2009 11:50AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:32PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:00AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:19AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
Logitech products sound in Japan carry the Logicool brand name.]]>Aug 12th 2009 10:50AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:28PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:29PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
:P]]>Aug 12th 2009 4:07PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:00AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:05AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:41AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/

These all use chips from DisplayLink.com. This newest version of the chip is faster and supports higher resolutions. Lenovo has had one based on this new chipset out for a while, I've been using it for a couple of months. Works great.



]]>Aug 12th 2009 12:28PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 11:06AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:11AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
I would love to play MAME and such on my TV with just a laptop for hardware overhead. Plug in my 360 controller(via USB) and play some classics.

Or do presentations.]]>Aug 12th 2009 10:15AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:29AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:25AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
The good news is that support from displaylink is excellent. They had windows 7 drivers up for download almost as soon as the RC was available, and said drivers work great!]]>Aug 12th 2009 12:05PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/The concept has been around for a while, but the higher resolution is relatively new. Lenovo came out with their version about a month ago for $129.]]>Aug 12th 2009 10:27AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:31AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 11:08AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 10:53AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
(Given no over-head, 8 bpc, 24 bit per pixel )
2,048 x 1,152 x 24 = 56,623,104 bit per frame=54 megabit x 60 fps = 3240 Mbps=3.2 Gbps?

That's 6.75 USB 2.0 max theoretical speed of 480Mbps!

]]>Aug 12th 2009 11:35AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 11:41AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
a USB bus can barely push out video anyway (we are talking 6fps refresh rate max) and you want to put audio on top of that?]]>Aug 12th 2009 5:59PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
Not bad if your staring at office apps all day, but forget about using it for entertainment purposes.]]>Aug 12th 2009 11:52AMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
They are for people who want lots of open browser windows, for people watching lots of stock market activity in real time. Might also be useful for people who need really big fonts and thus lots of screen area.

I'd like to protest them calling the largest format QWXGA. If it were QWXGA, then that should be quad-wide XGA. Normal XGA is 1024x768. Wide XGA is 1280x768. QWXGA should then be 2560x1536.

If all they can do is 2048x1152, then that's pretty much QWSVGA, where SVGA is 800x600, wide SVGA is 1024x600, and QWSVGA is 2048x1200. They're in that ballpark.

Better yet, let's stop using these arbitrary confusing letters and just call it what it is in numbers? The letter way is kind of like the Roman numeral system.]]>Aug 12th 2009 12:04PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
There are four parts - the base (VGA or XGA), the prefix (S, U, or Q), the possible W to indicate Wide (usually just 16:10), and the possible + to indicate a non-standard resolution.

16:9 resolution tend to be refered to with a P, as in 720p, 900p, 1080p, etc.

not the most precise system, but it makes sense for the most part.

I just don't know what to call 2048 x 1152. 1152p just doesn't have that ring to it]]>Aug 12th 2009 5:34PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
And, mixing multipliers is allowed, although sometimes multipliers are dividers (but I don't think I've ever seen multipliers and dividers mixed.) Example:

QVGA is a divider (320x240,) QXGA is a multiplier (2048x1536.)

And H is so much fun. HVGA is 320x480 (half,) HUXGA is 6400x4800.

Also, QSXGA (quad super) is a standard resolution fair and square - it's used in the medical field.

So, WQSVGA is OK under the convoluted naming system.

But, no, the monitor manufacturers had to define QWXGA as being different from WQXGA. Please tell me how that's any different. (I know why they did it, people wouldn't touch an SVGA resolution monitor today, but just call it 1152p and be done with it, then you don't have the name to deal with. And, it's a 16:9 ratio anyway, so it SHOULD be 1152p, not even WQSVGA.)]]>Aug 12th 2009 9:55PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:29PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:33PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 5:38PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/Aug 12th 2009 12:54PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
http://shop.lenovo.com/SEUILibrary/controller/e/web/LenovoPortal/en_US/catalog.workflow:item.detail?GroupID=38&Code=45K1610¤t-category-id=34851FD360E5473EB9DFEB639312E18E
]]>Aug 12th 2009 1:14PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
Long term usb 3.0 is needed for sure. If they can make a chip fast enough to push that many pixels then it's all good, but that still doesn't solve the 3d problem.]]>Aug 12th 2009 1:41PMhttp://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/http://www.engadget.com/2009/08/12/logitec-displaylink-certified-usb-to-dvi-dongle-handles-qwxga/
It would work for pre-rendered video being sent via a proprietary streaming software.


get to work and make it dude. haha]]>Aug 12th 2009 6:03PM