Just a guess, but they are probably worried about a PC feeding the TV with resolutions and timings that the TV is not designed for. But if you found a resolution that works for you, I wouldn't worry about it.

This was also mentioned in displays that had burn in concerns, due to the static nature of computers, but they put it in all the operating manuals. Your TV doesn't get burn in.

Thanks Technut.

So 57 are saying that it's safe? I will go and read that thread.

If the resolution and refresh rate are correct for the TV it is safe. Since you have a picture, the resolution and refresh rate are most likely correct. (1920x1080i, 1280x720p or 800x600p at 60 Hz are usually Ok.) Support for HDTVs is now built into many PC video cards so it less of an issue than it was several years ago. The issue of damage arises when incorrect parameters are chosen and the TV does not protect itself from being overdriven. (Most TVs do this automatically.) Burn in from static images can be an issue. It all depends on the type of set and what is displayed.

Analog RGB 15-Pin supports 640x480, 800x600, 1024x 768, 1280x1024 all at 60Hz
This is probably the best option. Try to match the PC resolution to the native resolution of the TV. An HDMI switch is also an option, as is component. Composite and S-video will not provide a good picture.

There is no such thing as an HDMI splitter/combiner cable. HDMI repeaters and switches are available from about $150 up.

There are other threads on these issues. Please search the forums.

Hi everyone,

My wife is a photographer. I'm currently shopping for her a 40-50 inches TV to show JPEG images at the highest resolution it can display. She has an iMac 24 with a DVI output. 95% of the HDTVs out there don't have a DVI input anymore (Of course, we could go with the Sharp LC46D92U, since it has a DVI input, but it's way to expensive).

I'm pretty 1080p LCD is the right way to go, even tough Plasma TVs are naturaly soft (a good thing when she want to show close-up pictures of her older clients, they don't see their wrinkles too much!). Yesterday, I brought sample photos on a CD and went to check them out on different TVs. Since most TVs are plugged with progressives DVDs, the quality wasn't so great. I finally found a Samsung LNS4096D (1080p) with a Blu-ray. The photos were awesome (but the Blu-ray is SO slow).

My question is: if I plug her iMac 24 with a DVI->HDMI cable on that TV, will the image quality be the same?

FYI, I'm really into this right now, but we don't need to buy this TV untill May. Right now, I'm closely following the price drops that are marking the arrival of the next series of HDTVs on my blog:

http://electronique.branchez-vous.com/televiseurs_hdtv/

(Check out the first two articles. It's in french, but it's mostly data, so you'll understand)

Hi Francois, before we discuss this with you it is best that you read the DHC FAQ about DVI/HDMI:

http://www.digitalhome.ca/forum/showthread.php?t=17873

Just wanted to share my experience hooking my iMac up to my TV, in case it helps anyone else.

TV: Sony KFE42A10
Computer: Apple iMac Core 2 Duo (late 2006 version)
Receiver: Sony HTDDW900

I bought two 20' cables from Blue Jeans Cable: HDMI and optical digital audio. I was worried about cable quality for that length and didn't want to pay a ridiculous amount. Fast shipping, reasonable price, and good quality cables left me a happy customer.

I used the mini-DVI adapter and a DVI->HDMI adapter to run the video from the iMac to the receiver over the HDMI cable. The iMac also has a digital optical out and I used the optical cable to run the audio to the receiver. The TV is connected to the receiver via another HDMI cable.

First try, the iMac detected the TV through the receiver and chose an appropriate 720p resolution, but there was some overscan. I used DisplayConfigX to tweak its default "HDTV - 720p" settings until I ended up with the following:

Horizontal/Vertical
Active: 1232/688
Front porch: 112/21
Sync: 80/5
Back porch: 224/36
Total: 1648/750
Pixel frequency: 74.160 MHz
Horizontal frequency: 45 KHz
Refresh rate: 60 Hz

It did take some trial and error, but now it is effortless to watch downloaded video on the TV, or even use it just for surfing the web. I also am able to play music straight from iTunes to the receiver. I used to use an Airport Express to do this, but it's no longer necessary.

Toshiba flagship 42LZ196 & 47LZ196 1080p LCD TVs do not support 1920x1080/60 rez on HD-15 input. The highest rez supported on PC input is 1024x768, bummer :(

I have a Sony KDSR60XBR2 that I am trying to hook up to my PC (Video card is 128MB Radeon 9800) through VGA, which the TV supports a resolution of 1980 X 1080 @60 Hz. The problem is the picture from the computer does not fill the entire screen, which is annoying. I can get a full screen using HDMI --> DVI on my CPU but the pic quality is poor. The quality from the VGA is stunning, but not full screen. Any thoughts??

Component will be your best bet since you only have one HDMI and it is already in use.


SpeedVV

Be aware that the ATI cards will not support DVD upconversion on their component outputs. I expect that is true of the Nvidia cards. And of course, MS MCE will not upconvert on component outputs. I'm sure someone will point out that this is controlled via flags in the source material and that the studios have promised not to do it. Nonetheless it is their option, not yours and it was enough of a problem for the customers that ATI, HP and Microsoft have knowledge base articles on the subject for owner of media centre computers.

I have a Sony KDSR60XBR2... The problem is the picture from the computer does not fill the entire screen... I can get a full screen using HDMI --> DVII have the KDS60A2000 SXRD set (only the XBR engine is different in yours, internally) and have discovered that the maximum resolution on the PC input is 1360x768p. The set doesn't upscale it to 1920x1080p, it frames it in a letterbox, which is annoying as beautiful as the picture quality is. PC gamer sites are starting to get a fair bit of these posts about the PC Input feature of the SXRD sets.

On the other hand, the HDMI inputs allow full screen 1920x1080p from the PC but I've found the PQ a bit less grainy at 1080i, so I've stayed with interlacing the input for now pending more testing.

Overscan with the PC video card going into one of the HDMI inputs is really bad on bootup (those very low res screens) but once the windowing is up its just an annoyance. I've used Nvidia's software to underscan it down in XP to proper proportions. I don't have it running right now or I'd be able to give you the numbers I've found that work best. I'll reply to this thread with those.

In Linux X Windows the overscan is the same as in XP, so I'm still hoping to find out how to accomplish underscanning with Nvidia's Linux driver since the PC is a MythDora HTPC box. My next step is to generate a Linux modeline from the underscanned XP settings using PowerStrip and seeing if that works.

Be aware that the ATI cards will not support DVD upconversion on their component outputs. I expect that is true of the Nvidia cards. And of course, MS MCE will not upconvert on component outputs.This is true, I have suffered this problem on my HTPC which is running at 1080i via component outputs, but the lack of unpconversion only seems to affect DVD playback, not playback of other HD content, including OTA HDTV on MCE.

The good news is that there is a simple solution as there is software that allows you to playback upconverted DVDs over component outputs. Either DVD43(free) or AnyDVD(pay) will allow you to do this. AnyDVD even has an HD version that allows you to playback HD and BR DVDs over non HDCP displays / video cards.

I use DVD43 to playback DVDs on my HTPC via Win XP MCE 2005.

Hello all,

My equipment is this:
HP NC8430 laptop w/ ati mobility x1600 with CCC 7.2
HP laptop dock with DVI port
Sharp LC-52D62U tv
DVI-HDMI single link cable

I need some assistance with setting up my laptop on my TV. My problem is this:

1080i30 displays perfectly in dot-by-dot (1:1 mapping)
1080p60 in dot by dot mode is smaller than the screen, i.e. it would be the perfect size if the tv was overscanning the image. Basically I have a approx. 48" desktop on the 52" screen.

What would be causing this? I've been through all the CCC settings, and nothing works. Is the single link cable the problem? I'm very confused. The tv tells me its seeing 1080p, so I'm guessing the problem is originating from the laptop.

Its gotta be something simple. Any ideas?

Thanks for your help.

Adam

my viewsonic N3752W has VGA input on back, and my PC has a Radeon 9600 SE with DVI-I..a quick trip to Walmart, a $30 adapter and hey presto, My PC was hooked up at 1280x 768. All I had to do was rummage for a audio cable to plug in...yes, the LCD TV has a port for PC sound. Those Viewsonic guys think of everything :D

Those Viewsonic guys think of everything


Glad to hear it! Might I suggest that you up the PC output to 1360x768 to match the panel's native resolution? According to their specs, this is both possible and preferred.

COMPATIBILITY PC 1360x768 (preferred), 1024x768, 1280x768, 1280x1024

Originally Posted by Wayne.
This is true, I have suffered this problem on my HTPC which is running at 1080i via component outputs, but the lack of unpconversion only seems to affect DVD playback, not playback of other HD content, including OTA HDTV on MCE.

The good news is that there is a simple solution as there is software that allows you to playback upconverted DVDs over component outputs. Either DVD43(free) or AnyDVD(pay) will allow you to do this. AnyDVD even has an HD version that allows you to playback HD and BR DVDs over non HDCP displays / video cards.

I use DVD43 to playback DVDs on my HTPC via Win XP MCE 2005.

Wayne does that software actually work well?

Will this scenerio work with Vista also or will it only work for XP?

Also does this only work for component output?

My Sony SXRD XBR2 is hooked up to my HTPC, which has an ATI 9800 video card. It is hooked up from HDMI on TV to DVI on the video card. I can get a picture, but it is very grainy. The only resolution I can get to work is 1280 X 720. The TV's native resolution is 1920 X 1080 @ 60 Hz. Why can't I get a higher resolution?? I just updated the display driver and CCC from the ATI website (there was a new update released yesterday).
Do I need a new video card???

In the control panel have you selected the "treat monitor as HDTV" button or whatever it's called on the ATI control panel these days?

Yes, I have selected that option. I wish it were that simple......