DVI and HDMI Explained

maicaw · 10-15-2005, 04:40 PM

I noticed this on Samsungs exellent tutorial site @ http://product.samsung.com/cgi-bin/n...module_6_1.jsp

Quote:

HDMI is a relatively new interface that will eventually replace DVI. Unlike DVI, HDMI will also carry digital audio signals and data, and HDMI connectors can be daisy-chained from one component to another in your TV or home entertainment system

That's news to me -- about the daisychaining - Is that implemented on some devices or is it a "lost" feature - I have a HDMI switch - but daisychaining would be preferable.

RSawdey · 10-15-2005, 05:13 PM

A Red/White dual cable is an 'analog stereo pair'. Not digital audio compatible.

I've never seen a daisychainable HDMI setup... no HDMI pass thru outputs. Now, FIREWIRE is daisychainable...

madframer · 12-15-2005, 07:57 PM

I just bought a 32 inch lcd flat with a dvi port only and have a scentific atlantic cable box with a hdmi port only so i bought a dvi to hdmi adapter to run and i know that by doing this i need sound from somewhere else but to no avail no sound im using rca (red and white for audio and nothing when it is set to my dvi imput on my tv but if i set it to video 1 through the rca comp i get picture and sound. the cable company give me no explanations or reasons why no sound....any help and if u need more onfo to help me email me madframer@msn.com

this is very frustrating the becuase i want dvr cable box and the dvr box they have with dmi port thewy tell me the dvi port is not active and they dont know when, but the regular hd box without dvr has the dvi port that works so if i want dvr i am having to use the dvi to hdmi adapter to get picture but no sound please help
madframer is online now Edit/Delete Message

ryseja · 12-20-2005, 12:49 AM

I posted this over in the Dish Network forum, but perhaps it would have been better here, so I'll post it again. I apologize for the added noise.

I have an 811 and my TV is a Sony KDF42WE655. I have the DN HD package. I am using these cables- Monster Cable Component Video Cable (MV2CV-2M). If I switched to HDMI would I really see improvement in picture puality? And I am under the impression there is no reason to upgrade from component with my DVD player. Is that correct?

And with HDMI I could stop using an additional digital audio cable, as I understand. Would I lose anything on audio quality?

godson · 01-29-2006, 11:39 PM

I will admit I notice the better picture from DVD w/hdmi to tv but my cable box w/hdmi to tv seems no different than components from cable box to tv...guy at cable company told that since all cable,albeit digital,is still converted from analog to digital even before getting to your tv since all cable is transmitted into our homes via coaxil,which is simply not a carrier of "TRUE" digital signal,the box itself converts the analog signal to digital,although if this is true,then i guess it could save you one conversion but not really sure....anybody know?

Blaguyperson · 02-14-2006, 02:01 PM

At a Radioshack store I saw a "VGA to DVI converter". Will this convert to DVI-A? And would I be able to connect this type of DVI output to a Digital HDTV

yesguy8 · 04-23-2006, 07:26 PM

Need help, i have an HDMI aquios TV and when i connect it to my Scient. Atlan. HD cable box, i get and HD pix but no sound on Input 4. If i put it on Plain cable i get sound but no pix. I'm sure it's hooked up right. My cable provider says the seem to have problems with HDMI compatibility. Any ideas how to fix it?

Thanks

CPR · 04-24-2006, 11:41 AM

Had a similar problem with my Sony KD34XBR960
Read the MANUAL, & it specifically said, to use input 7, ONLY for HDMI
Perfect!

jhaustin1943 · 07-14-2006, 08:25 PM

Dumb newbie question: A supposed "advantage" of HDMI is that digital audio is on the same cable with the video. But don't you need to send the video to the display and the audio to the sound system, which are typically separate boxes?
If the signal always needs to be split between boxes, what's the point of a single cable/connector?

smcenerny · 11-12-2006, 04:32 PM

Okay, okay, I know the difference. I thought it would be a simple matter to find a DVI-I to DVI-D converter dongle, like the DVI-I to VGA dongles that come with every video card nowadays.

I understand that the DVI-I is a superset of DVI-D and know to expect that only the digital signals would need to be passed. But all I can find online are custom cables. No converters. Seems like a business opportunity to me. Or am I the only guy with a drawer full of DVI-I cables that are worthless?

steve

tweakfreak · 05-13-2007, 10:33 AM

Quote:

Originally Posted by jhaustin1943

Dumb newbie question: A supposed "advantage" of HDMI is that digital audio is on the same cable with the video. But don't you need to send the video to the display and the audio to the sound system, which are typically separate boxes?
If the signal always needs to be split between boxes, what's the point of a single cable/connector?

That was exactly the question i originally asked myself when the HDMI links launched. if you are a high-end audio craver, the signals will almost always run to seperate components.
I realized that the majority of the market would prefer a single link for convenience though.
My issue with this is that surely there would be a loss of sound quality in a link like this as opposed to a proper seperate AES EBU or high quality Coax link for the audio.
has anyone actually tried to compare the sound in a high-end system over HDMI vs Coax/AES?

RichardJ · 05-17-2007, 06:57 PM

Hope someone answers your great quetion, I just want, DVI-I (vidio only) to HDMI, I'v got 4 adapter cables for sale CHEAP

RichardJ · 05-17-2007, 07:07 PM

Quote:

Originally Posted by smcenerny

Okay, okay, I know the difference. I thought it would be a simple matter to find a DVI-I to DVI-D converter dongle, like the DVI-I to VGA dongles that come with every video card nowadays.

I understand that the DVI-I is a superset of DVI-D and know to expect that only the digital signals would need to be passed. But all I can find online are custom cables. No converters. Seems like a business opportunity to me. Or am I the only guy with a drawer full of DVI-I cables that are worthless?

steve

Hope someone answers your great quetion, I just want, DVI-I (vidio only) to HDMI, I'v got 4 adapter DVI-D and/or -M to HDMI cables for sale CHEAP

mpnyc76 · 09-10-2007, 02:17 PM

Does the HDMI just eliminate the 5 wires or does it really make a difference in picture quality?

chandu · 09-10-2007, 06:12 PM

I have a projector with DVI-D, VGA, S-Video and coposite video input only. I want to use coponent video from my DVD player (progressive scan) to projector. Is there any convertor/adaptor avaialable for this. Or suggest me any alternatives to get good picture quality.

12-15-2005, 07:57 PM	#18
madframer My plasma is High Def. Join Date: Dec 2005 Posts: 9	dvi to hdmi problems I just bought a 32 inch lcd flat with a dvi port only and have a scentific atlantic cable box with a hdmi port only so i bought a dvi to hdmi adapter to run and i know that by doing this i need sound from somewhere else but to no avail no sound im using rca (red and white for audio and nothing when it is set to my dvi imput on my tv but if i set it to video 1 through the rca comp i get picture and sound. the cable company give me no explanations or reasons why no sound....any help and if u need more onfo to help me email me madframer@msn.com this is very frustrating the becuase i want dvr cable box and the dvr box they have with dmi port thewy tell me the dvi port is not active and they dont know when, but the regular hd box without dvr has the dvi port that works so if i want dvr i am having to use the dvi to hdmi adapter to get picture but no sound please help madframer is online now Edit/Delete Message

12-20-2005, 12:49 AM	#19
ryseja How can anyone watch standard def? Join Date: Dec 2005 Posts: 26	Cable question I posted this over in the Dish Network forum, but perhaps it would have been better here, so I'll post it again. I apologize for the added noise. I have an 811 and my TV is a Sony KDF42WE655. I have the DN HD package. I am using these cables- Monster Cable Component Video Cable (MV2CV-2M). If I switched to HDMI would I really see improvement in picture puality? And I am under the impression there is no reason to upgrade from component with my DVD player. Is that correct? And with HDMI I could stop using an additional digital audio cable, as I understand. Would I lose anything on audio quality?

04-23-2006, 07:26 PM	#22
yesguy8 What is HD? Join Date: Apr 2006 Posts: 1	HDMI sound problem Need help, i have an HDMI aquios TV and when i connect it to my Scient. Atlan. HD cable box, i get and HD pix but no sound on Input 4. If i put it on Plain cable i get sound but no pix. I'm sure it's hooked up right. My cable provider says the seem to have problems with HDMI compatibility. Any ideas how to fix it? Thanks

04-24-2006, 11:41 AM	#23
CPR High Definition is the definition of life. Join Date: Aug 2004 Posts: 73	Hdmi Had a similar problem with my Sony KD34XBR960 Read the MANUAL, & it specifically said, to use input 7, ONLY for HDMI Perfect!

07-14-2006, 08:25 PM	#24
jhaustin1943 What is HD? Join Date: Aug 2004 Posts: 4	why is video+audio in one connector "better"? Dumb newbie question: A supposed "advantage" of HDMI is that digital audio is on the same cable with the video. But don't you need to send the video to the display and the audio to the sound system, which are typically separate boxes? If the signal always needs to be split between boxes, what's the point of a single cable/connector? __________________ Provider: TWC Cary NC Cable Box: SA-8300HD w. HD-DVR TV: Toshiba 36HF71 direct-view CRT

10-15-2005, 05:13 PM	#17
RSawdey Mr. Wizard Join Date: Feb 2005 Location: Ferndale, Michigan Age: 61 Posts: 5,981	A Red/White dual cable is an 'analog stereo pair'. Not digital audio compatible. I've never seen a daisychainable HDMI setup... no HDMI pass thru outputs. Now, FIREWIRE is daisychainable...

01-29-2006, 11:39 PM	#20
godson Mr. Bill Belecheeeeek. Join Date: Jan 2006 Location: philadelphia Posts: 2,592	I will admit I notice the better picture from DVD w/hdmi to tv but my cable box w/hdmi to tv seems no different than components from cable box to tv...guy at cable company told that since all cable,albeit digital,is still converted from analog to digital even before getting to your tv since all cable is transmitted into our homes via coaxil,which is simply not a carrier of "TRUE" digital signal,the box itself converts the analog signal to digital,although if this is true,then i guess it could save you one conversion but not really sure....anybody know?

02-14-2006, 02:01 PM	#21
Blaguyperson I know what HD is! Join Date: Dec 2005 Posts: 6	At a Radioshack store I saw a "VGA to DVI converter". Will this convert to DVI-A? And would I be able to connect this type of DVI output to a Digital HDTV

11-12-2006, 04:32 PM	#25
smcenerny Techno-expert/HD-newbie Join Date: Nov 2006 Posts: 1	DVI-I to DVI-D converters Okay, okay, I know the difference. I thought it would be a simple matter to find a DVI-I to DVI-D converter dongle, like the DVI-I to VGA dongles that come with every video card nowadays. I understand that the DVI-I is a superset of DVI-D and know to expect that only the digital signals would need to be passed. But all I can find online are custom cables. No converters. Seems like a business opportunity to me. Or am I the only guy with a drawer full of DVI-I cables that are worthless? steve

05-17-2007, 06:57 PM	#27
RichardJ A couch and an HDTV to go please. Join Date: May 2007 Posts: 10	Hope someone answers your great quetion, I just want, DVI-I (vidio only) to HDMI, I'v got 4 adapter cables for sale CHEAP

09-10-2007, 02:17 PM	#29
mpnyc76 My plasma is High Def. Join Date: Sep 2007 Posts: 5	Does the HDMI just eliminate the 5 wires or does it really make a difference in picture quality?

09-10-2007, 06:12 PM	#30
chandu What is HD? Join Date: Aug 2007 Posts: 1	I have a projector with DVI-D, VGA, S-Video and coposite video input only. I want to use coponent video from my DVD player (progressive scan) to projector. Is there any convertor/adaptor avaialable for this. Or suggest me any alternatives to get good picture quality.