View Full Version : DVI HDTV, love it!
laveller
12-31-2002, 03:07 PM
Just hooked up a Samgs. ST160 to a new Sony hs10 hdtv lcd projector...using the DVI for terristerial hdtv, sat base hdtv, and general DTV, component video for DVD's and s-video for my old LD...let me tell ya, with a true hdtv signal (native 720p or 1080i) via dvi, the picture (with a 12 ft diagnol 16:9 screen) is unbelievable. Watched the sound of music on sunday night from abc, 720p feed! just outstanding! Unreal resolution and color for a screen that size. FYI.
Laveller, thanks for the feedback and welcome to the forum.
You may wish to change your Laserdisk player connection to composite video cable. That will let the signal go through the TV's comb filter, since LD signals are "stored on disk" as "composite" signals.
You may not notice any difference, but I thought I'd mention it, especially since it's sometimes a "cheaper" solution for a "better" picture.
laveller
01-02-2003, 12:54 PM
57, that's an interesting idea...Do LCD projectors have comb filters (I have to admit that I don't know what a comb filter does!) the picture quality of my system varies wildly depending upon the input...480i input from cable or OTA standard broadcast produces a picture that is mediocre at best, satalite DTV, also native 480i is a little better, the LD via s-video in better still (I haven't tried the LD via composite yet), progressive DVD ranges from good to outstanding depending on the quality of the DVD conversion (TORA TORA TORA is an excellent video transfer) and OTA hdtv (I can only get an ABC feed at this point) is absolutly outstanding.
Pioneer DV-45a, Pioneer CLD-505, Yamaha RX-V1300, Onkyo power for Design Acoutics Sub, AR speakers, Sony HS10,
Samsung TS160, misc other stuff...
I believe that all TVs that have composite inputs have comb filters (even non-HD). The quality of the filter varies with the quality of the TV.
You may wish to check the specs of your LCD projector to see if there's any mention of comb filters/type, etc.
DO guys know if there is such an adapter that will transform from RGA to DVI connectors?
I currently have the RCA dtc 100 that uses the RGA/15pin connector, but would like to utilize my DVI adapter on the back of my Sony 57 tv..
Any thoughts, thanks
-310
Trick414
03-01-2003, 09:17 AM
310,
I can't answer your question, but do have some information.
I have an MSI GeForce 4 ti4200 video card in my PC. Dual outputs: standard RGB and a DVI. It came with an adaptor for the DVI. It changes DVI --> RGB.
When you say RGA, do you mean the RCA brand that uses an RGB connector?
In any case, my point is that I would think there would be an adaptor out there, as it is possible to go DVI --> RGB, at least as far as a computer monitor. From what I can tell, digital is digital.
Good luck.
--Trick414
FullBandwidth
03-10-2003, 11:59 AM
RGB is still analog, is it not?
Trick414
03-11-2003, 01:12 AM
Darn, now you got me thinking...
I could be way off base here, but I'm not sure that RGB/VGA (whatever) IS analog. I would think the video card is outputting a digital signal, regardless of the format.
The adaptor is a very simple price of plastic. I can almost assure you there isn't any "processing" going on in the adaptor.
I can only assume then that the signal coming out of the video card is already digital. I've been lurking around AVS forum and it seems like the signal is the same, just a different pinout.
Someone more knowledgeable can jump in anytime! :)
--Trick
Jester
03-11-2003, 07:52 AM
The 15 pin RGB connecter is analog, meaning that the color signal is passed as a variable voltage to the display's circuitry. DVI is (usually) a digital signal, meaning that the color information is encoded as binary signals sent at a specific frequency.
The DVI connector has extra pins that can carry an analog signal, but I would guess that your video card senses the RGB conversion adapter and changes its signal to analog. This can be accomplished a number of ways without requiring the adapter to have intelligence.
Trick414
03-11-2003, 11:18 AM
Heh, I knew I didn't know anything! :)
Ok, so would it be possible then to go from RGB to DVI?
--Trick
Jester
03-11-2003, 11:47 AM
Yes, but you need a scan converter, and they are not yet very cheap. Focus makes a couple of units that are targeted at home theatre. You can find them here: http://www.focusinfo.com/products/centerstage/centerstage.htm
FullBandwidth
03-20-2003, 10:49 PM
Originally posted by Jester
http://www.focusinfo.com/products/centerstage/centerstage.htm
I had to LOL about this from their page:
High-bandwidth Digital Content Protection (HDCP) is a content protection scheme optionally used with DVI to prevent unauthorized copying and redistribution of digitally perfect content.
I guess we have nothing to worry about then, I contend there's no such thing as "perfect" content!
Johnwa
05-09-2003, 06:34 PM
just make sure before you buy that the DVI they are using is meant for TV's and not p.c.'s. there are a few switchers that are meant for front projectors that have the computer type DVI and sometimes it's a little difficult to discern which one they mean sometimes.DVI with HDCP is only for TV use so if it says that you're probably safe.
