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How important is a DVI input?

LazBunting
02-05-2005, 10:35 AM
I'm continuing to scratch my head trying to decide on a 34" direct-view 16:9 TV. I posted previously about my principal choices, the Toshiba 34HFX84 vs. the Sony KD-34XBR960. Tough choice, but I have been leaning to the Toshiba (lower price, lighter weight).

Someone has called to my attention the issue of "DVI input." This apparently is a direct digital input to the tv so the signals don't have to be translated to analog, etc., etc.

I found a web site where someone advices that a new digital TV should have one of these, as its role will become important in the future, etc.

Check this out:

http://www.digiupdate.com/G002_DVI_HDMI_and_HDCP.html

Neither of the TV's I'm considering has a DVI input. There is a JVC model that does have one. It's the JVC AV 34WP84, $1399 at B & H in New York.

Question: is a DVI or lack of one significant? How do I decide this?
Thanks for all opinions/answers.

Doug <---who remembers when choosing TV's was pretty straightforward :eek:

rbinck
02-05-2005, 12:59 PM
If you are considering a CRT based TV it is not as important as it would be for a fixed pixel type display. The main argument for DVI/HDMI is excerpted from the link:

Component: When you use a component connection, your original digital signal is converted to analog, then it is sent over to the TV and becomes susceptible to noise, then it is converted back to digital by the TV. This dual conversion introduces conversion artifacts, plus the transmission can pick up noise.

DVI: In a DVI connection, the original digital signal is passed to the TV digitally in its original pristine condition.

Notice the component discussion said, "your original digital signal is converted to analog, then it is sent over to the TV and becomes susceptible to noise, then it is converted back to digital by the TV." This is not universally true, only for fixed pixel type displays is this true. Fixed pixel being plasmas, DLPs, LCD, LCOS, etc. CRT based TVs are basically analog, so when a DVI/HDMI connection is used, the digital data received still gets converted to analog for display.

So bottom line if you have a digital type display the above quote is true, but with a CRT based display the original digital signal is passed to the TV digitally in its original pristine condition and converted to analog by the TV. Either the source device or the TV will have to make a D/A conversion.

TMMerlin
02-05-2005, 12:59 PM
The DVI or HDMI is very important ! It is the very best output from a DVD player and the very best input to the TV. There is no Analog/Digital conversion going on and such, you have the purest signal.

Does not having it "negate" good PQ. Not really, as the "component" signal is typically very good BUT, Digital is the absolute best !

Reagrds ..

rbinck
02-05-2005, 01:17 PM
There is no Analog/Digital conversion going on and such, you have the purest signal.
Again based on a digital type TV. With CRT based TV there will have to be a D/A conversion somewhere, either in the TV or in the DVD player.

LazBunting
02-05-2005, 01:36 PM
The TV's I have considered each has an HDMI input. The Crutchfield people say this is actually a newer technology than DVI and is all that I need. True?

rbinck
02-05-2005, 03:55 PM
As long as you get a STB or DVD that has a HDMI connection. If you get a device with a DVI connection, you will need a converter cable.

buck2303
02-05-2005, 06:44 PM
it is a much better picture

patsfan4553
02-05-2005, 08:32 PM
See my post under the other topic please.

kdogg
02-07-2005, 10:27 AM
The TV's I have considered each has an HDMI input. The Crutchfield people say this is actually a newer technology than DVI and is all that I need. True?

Sort of. HDMI includes video and audio while DVI only carries video signals.

I'd say definitely get a TV with HDMI or DVI. With all my video games, cable boxes, and DVD's, there isn't enough component inputs for everything. So the DVI makes it a little easier.