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The struggle between DisplayPort and HDMI continues

This week marks an important move forward for the DisplayPort special interests group as the Video Electronics Standards Association (VESA) has officially approved DisplayPort version 1.1 as an industry standard. Despite the approval, there is an ongoing struggle in the graphics industry about which technology will make the cut as the de facto high-definition PC interface: DisplayPort or HDMI.

According to VESA, the DisplayPort standard has come quite a long way. "DisplayPort 1.1 gives manufacturers of LCD panels, monitors, graphics cards, PC chipsets, projectors, peripherals, components, and consumer electronics a next generation digital interface that is designed to replace LVDS, DVI, and eventually VGA," said the statement.

VESA indicates that the benefits of DisplayPort are significant and important, and that the group thinks DisplayPort will be integrated into many next-generation PCs. "Our task groups and committees within VESA worked very hard to ensure that DisplayPort 1.1 satisfies the important objectives it is designed for, and as a result, this new version has widespread support among all the leading computer and consumer electronics suppliers."

Major developers like AMD, NVIDIA, HP, Intel, Lenovo and Samsung have said that they will fully support DisplayPort. According to the release:
Available throughout the industry as a free to use, open and extensible standard, DisplayPort is expected to accelerate adoption of secure digital outputs on PCs, enable higher levels of display performance, and introduce high volume digital displays that are simpler, thinner, and easier to use than VGA.
On the other end of the spectrum, the groups backing HDMI argue that while there are valid features in DisplayPort, HDMI can do everything that DisplayPort can and more. The most pominent factor however is the fact that DisplayPort doesn't have solid definitions for licensing. Although the DisplayPort group claims that there is little to no fees, the HDMI group points out that there are also no restrictions on adding in fees at a later date.

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RE: One cable to rule them all...
By Hawkido on 4/4/2007 6:15:55 PM , Rating: 2
Why don't we just use one cable standard for everything?

That's a good question. I had the same thoughts, and found a bunch of experienced CSEG's (Computer systems engineers) to give me the answer. The more types of data protocols and formats you transmit over an interface the more overhead and latency you create. The overhead is added when with every packet or cell in a stream of data that identifies what type of data it is, and latency is caused by dealing with the varying packets and deciding what to do with the data based on the type of packet or cell. Plus you will add contention to any media that is used by more than one device, causing additional latency and jitter (deviation in latency caused by bad luck in the standoff roll of the dice)

To add to the muck, high-speed high-density data transmission requires shielding to prevent signal corruption and such, making the cables cost more and require much more QA at production and therefore much more expensive.

Switching to one cable interface would mean that your mouse would cost an additional $15-$20 dollars and have a cable 1/2 inch in diameter, it would also be as flexible as a stick.

So one cable, no. Perhaps 3 cables (USB 2.0 for light local comm, a varient of CAT5 (very inexpensive) for long haul comm, and a heavily shielded cable for short range high volume data) which is pretty much what we have now, although we have different flavors or brands (licensing ya' know) for each of the 3 basic classes of comm cable.

I hope this sheds some insight, and as always I am mostly repeating hearsay that may have been dumbed down to the level that my sources think I can handle.... LOL

By Lazarus Dark on 4/5/2007 12:29:12 PM , Rating: 2
that actually does make some sense, I suppose. Then again like someone said, eventually we'll probably go mostly wireless. I'm already using bluetooth for my kb/mouse. Wireless usb is coming out. 802.11n could eliminate the network cable for many. Maybe wimax cards could eliminate that further. And some companies I believe are working on wirelessHDMI even. I'd much rather see that. So I guess eventually we'll eliminate most of the cables.

"We can't expect users to use common sense. That would eliminate the need for all sorts of legislation, committees, oversight and lawyers." -- Christopher Jennings
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