Wireless vga/dvi?

The_Bullman

Is there such a thing as wireless dvi or a wireless vga connection?

Basically for connecting from the graphics card to a monitor wirelessly

Anyone ever hear of such a thing? Any good? experience with it?

Chalk

afaik as i know the bandwith is too high for wireless currently,
there was some american company demonstrating it but the units were ridiculously expensive

you could try one of them video senders,
but obvioulsy would need tv out / scan converter to take the vga and crapify it for you...

mp3guy

hmm, out of curiosity, what would the bandwidth be?

padraigf

Multi gigabit per second. Waaaay too much.
I think DVI tops out at 1.5 gigabit. Newer standards are meant to go to 3 gigabit and above afaik.

mp3guy

hmm, wireless gigabit??

padraigf

lol, id love to see how much that would cost.
To the OP, you're just going to have to run the wire unless you want to spend hundreds/thousands or have awful awful quality.

One other possibility is transmitting the picture over a wireless network to another PC. Theres a program that does it but I cant remember what it's called... At 54mbps it might be just about barely useable, although not for anything with full motion video. You want a low enough resolution/colour depth too.

Mutant_Fruit

Well, considaring DVD's are (for lack of a better word) DVD-quality at a mere 9mbps, i can't really understand how 54mbps wouldn't be enough to stream something to a TV. Ok, take into account that 54mbps really means about 24mbps each way... and you won't get perfect signal, so make that 15mbps each way, you still have PLENTY of bandwidth for full quality streaming.

digitaldr

I've streamed DVDs from my PC to my laptop over a wireless connection with no problems

padraigf

Thats streaming the encoded data, not the monitor signal. A monitor signal is pure completely uncompressed data. Have a go at how high the bitrate of it is.

1280 x 1024 x 32 x 75 bits per second. = 3145728000 bits per second = 3.145 gigabits per second.

Lets see your 24megabit wireless do that shall we ?

jessy

Mutant_Fruit wrote:

Well, considaring DVD's are (for lack of a better word) DVD-quality at a mere 9mbps, i can't really understand how 54mbps wouldn't be enough to stream something to a TV. Ok, take into account that 54mbps really means about 24mbps each way... and you won't get perfect signal, so make that 15mbps each way, you still have PLENTY of bandwidth for full quality streaming.

The 9Mbps is 9mbytes = 72Mbits(around about)

Where as 54mbps is 54Mbits = 6.75mbytes(around about)



@padraigf

Why dose the monitor need to refresh @ 75Mhz would 60 not do? also what Resoution are DVD encoded at, im sure its not 1280*1024

padraigf

no, DVDs are 9 mega bits per second. Not 9 mega bytes per second.

75hz is just the highest my monitor does so thats what I run it at. You should always run a monitor at the highest possible refresh rate for eyestrain etc.

DVDs are encoded at 720x576 as far as I know.

The guys question was about sending a monitor signal, not sending compressed DVD video. There is a massive difference. IF he was sending compressed DVD video over the network then he would have to be sending it to a PC, not to a monitor. Your PC decodes that 9 megabit dvd stream into a multi gigabit signal to be sent to your monitor. Theres a reason that you need a P3 500mhz to watch DVDs, they didnt just make up the system requirements for the fun of it.

mp3guy

padraigf wrote:

Thats streaming the encoded data, not the monitor signal. A monitor signal is pure completely uncompressed data. Have a go at how high the bitrate of it is.

1280 x 1024 x 32 x 75 bits per second. = 3145728000 bits per second = 3.145 gigabits per second.

Lets see your 24megabit wireless do that shall we ?

2.9296875 gigabits per second to be exact, or 375 megabytes a second. When will people learn, its 1024 in a kilo/mega/giga etc... NOT 1000...

padraigf

Sorry, my bad. Close enough for the purposes of showing him that it's impossible though

The_Bullman

yeah, seems that way. After I posted the thread I came across a laser based system that cost several thousand. I'm not even sure of the quality out of it.

and it doesn't allow me to walk infront of it either. What's the point!!

When do you guys thing that this type of activity will be possible?

matrim

You could try something like these http://www.threedoubleyou.com/cordless-video.htm

I know they work for sending from a dvd player to a tv in another room.

There should be some way to setup the signal from dvi to go into them.

Scruff

heres an idea..
pc1 is the pc ye want to stream from
pc2 is a basic computer with the monitor.
both connected with by a wireless network.

working on pc2 you can use pcAnywhere or a similar program to access pc1 fully.

padraigf

matrim, the problem with one of those TV transmitters is that TVs have nowhere near the resolution that computers do. The quality would be totally ass.

formatman

What is the distance you need to run this signal across , is it the cost of a long DVI cable that is influencing the wireless choice

A fe home cinema magazines have advertised a system that runs over standard cat 5 network cable with a transmitter and receiver at either end at under 100 sterling I think it was

this was designed for long cable runs to home cinema projector etc at hight quality

The_Bullman

It's just for working between my pc and monitor.

Basically, as I'm thinking of upgrading, I was going to try to make as wireless a pc as possible. Only having the essentials still wired up. Looks like the monitor will have to be wired. Ah well