Whats' The Advantage Of Having a DVI Connector on a LCD Monitor?

[Kenji4861]

I have a DVI connection on my graphic card. How different would it be with an LCD that I can connect DVI compared to one that is connected with analog?

Cleaner view? What's the advantage?

 

[Ryan]

You'll know when you find out the advantages to searching, and posting in the right forum.

 

[Goosemaster]

IT'll so freakin' amazing that you won't have time to post because you will be appreciating how nice it looks...



DVI reduces noise and is VERY sharp

 

[Pooteh]

um becuz lcds are digital eh? 1 pixel =1 pixel on screen.

so analog is converted to digital in the lcd, not perfect process.. end up with slight fuzziness

 

[Smilin]

Yer standard VGA connector makes your signal go Digital-Analog-Digital (which ain't a perfect process)

DVI Goes Digital-Digital


It's kinda like making a casette tape of a CD then burning a copy of that tape back onto CD.

 

[Gosharkss]

On a analog system, the Ramdac (chip that generates the video signal on the VC) has been integrated into the graphics controller chip for years now. Adding DVI means adding a chip to the VC and the monitor this adds cost to both. DVI cables are also more expensive that standard VGA style cables.

Even monitors with a DVI interface convert to analog at the LCD driver level. The digital signal must be converted to an analog in order to achieve the 16M colors. If LCD was pure digital only two colors, black and white would be achievable. In order to generate the 16M colors each red, green and blue cell must be capable of stepping through 256 shades this is an analog function. In fact, most LCDs maintain the video signal in analog form through to the pixel drivers (NEC was the most notable producer of these).

Most of today?s version of DVI is rather limited. DVI driver chips have a maximum 1600 x 1200 at 60Hz resolution and refresh rate capability. Keep this in mind if you plan on upgrading. LCD?s do not suffer from flicker so the 60Hz is not such a big deal unless you are playing games and want higher FPS. Faster DVI transmitter and receiver chips are being developed if you want to upgrade, however that means replacing both your video card and monitor. With an analog connection you can upgrade either one without the need to replace the other.

 

[boyRacer]

Originally posted by: Gosharkss
On a analog system, the Ramdac (chip that generates the video signal on the VC) has been integrated into the graphics controller chip for years now. Adding DVI means adding a chip to the VC and the monitor this adds cost to both. DVI cables are also more expensive that standard VGA style cables.

Even monitors with a DVI interface convert to analog at the LCD driver level. The digital signal must be converted to an analog in order to achieve the 16M colors. If LCD was pure digital only two colors, black and white would be achievable. In order to generate the 16M colors each red, green and blue cell must be capable of stepping through 256 shades this is an analog function. In fact, most LCDs maintain the video signal in analog form through to the pixel drivers (NEC was the most notable producer of these).

Most of today?s version of DVI is rather limited. DVI driver chips have a maximum 1600 x 1200 at 60Hz resolution and refresh rate capability. Keep this in mind if you plan on upgrading. LCD?s do not suffer from flicker so the 60Hz is not such a big deal unless you are playing games and want higher FPS. Faster DVI transmitter and receiver chips are being developed if you want to upgrade, however that means replacing both your video card and monitor. With an analog connection you can upgrade either one without the need to replace the other.

So not as much difference between the two then?... people seem to say there is a day and night difference between analog connections and DVI.

 

[boyRacer]

bump

 

[kylebisme]

Originally posted by: Gosharkss

The digital signal must be converted to an analog in order to achieve the 16M colors. If LCD was pure digital only two colors, black and white would be achievable.[/quote]


i think the terms "digial" and "binary" are geting confused here, but first let me make something clear. i dont even claim to know much at all about the inner workings of lcd monitors as i have never taken one apart but i have done a bit of studing on the concepts of digital and analog and i have as well picked up a bit of info on on the physics behind color and more generaly that of light over my days. that said, i would like to point out that digital does not by any means limit the possablity of more than two outcomes by any means, or argueably any number of outcomes for that matter aside from those restrictions imposed by the eqations wich govern the system. even in its simpilist form each "pixel" of an lcd, as stated above, is made of of three cells, each of wich is capable of produceing one of three seprate colors; red, green and blue. on top of that such a three color system can display all three at once for what we call white, any combonation of the two for yellow, auqa and fuchsia, and of course none comes out looking rather black. furthermore, colors in between the ones already mentioned are possable by varying the intensity if each pixle relitive to the other. granted that last part is not nessacarly digital but it will be considered to be either analog or digital depending upon if the change from one state to the next appears as a smoth change or a harsh step. i must stress the word "apear" in that last comment becuase it is yet to be proven, and possably never will be, wether there realy is such a thing as a smooth transition possable or just harsh steps small enough to be mistaken for smooth transitions. now that may sound compleatly off the wall at fist but i must remind you that a most popular feild of sceince know as quantuim physics is founded on the beleif that there is a smallest unit, the quanta, wich if found to exist would negate any posiblity of "true analog" and leave only the distintions of higher or lower rates, be it frame rate, bit rate, or quanta rate. now i must stress that i am not saying such things are the way things are, mearly that neither myself or anyone i have ever come in contact with have been able to present a argument wich definitively proves one posiblity to to be more likely than the other, let alone true or false. however, back to that wich is most obviously digital, even if the cells themselfs were mearly capable of displaying either black or white in decrete instances, and therefor be not only digital but esentaily binary as eluded to in the comment i quoted above, the display of multiple shades is very possable. multiple shades are easly derived from black and white by the same method mentioned above with red green and blue, by manipulating frequnency. sure white looks like white and black looks like black but it is not that simple, flick them back and forth consitantly and quick enough and it may look like a solid shade of grey. however not only are shades of grey possable by such methods but, though proper modulation, all colors can be displayed. sence as we all know each color is its own ferqency of radiation on the visable spectrum 430 trillion hz being red to 750 trillion hz being violet all we have to do is make our single black/white pixel flicker back and forth at some freqency in that range and it will apear to have color. for a simple way to check the validity of what i just explained please refer to Roger Hayward's disk experment and take the time to try it out if you still have your doubts or just want to see it in action, its prety impressive to see for the first time and is partiularly intertaining to show to childern if happen to have any running around.