[opendtv] Re: State of the Art LCD 45" HDTV

At 10:10 AM -0400 10/27/04, John Golitsis wrote:
>It would be overkill for digital signage, really.  I wouldn't create 
>anything in
>1080, because I'd have to use interlace for video content creation and then
>playback would require a seriously robust PC.  We're entirely 720p here, which
>was my choice.  I'm sure you'll get a kick out of that ;)

I'm confused...

Perhaps you are constrained currently by the camera you are using to 
acquire video. I'm not certain that this is what you are trying to 
express, but I do have a few tips/observations.

- Just because a display has more resolution than you can capture 
with a camera today, it does not mean you cannot use a lower 
resolution camera (i.e. 1280 x 720P), and then upsample to 1920 x 
1080. This works quite well for 720P.

- There are HDTV cameras that shoot 1920 x 1080P at 24 and 30 frames 
per second, which should be adequate for MANY applications.

- As is the case with many forms of new media, it is not always 
necessary to fill the entire screen with one video stream. In the 
case of digital signage,  video is OFTEN presented in a window along 
with non-Nyquist filtered graphics.

As for playback performance, it really depends on what you are doing. 
Panasonic is shipping Plasma panels with built in modules to handle 
all of this . They can support MPEG-2 MP@HL playback, HTML graphics 
generation, and some forms of interactivity; another module offers a 
broadband connection that can be used to upload files to the display 
for play out.

At NAB Panasonic also demonstrated a variety of Macs playing out HDTV 
to projectors. You can use a Powerbook, a desktop, or an Xserve. A 
couple of  X-serves can now handle all of the storage and playback 
requirements of a film festival. I suspect that we will soon be 
seeing 17" and 20" G5 iMacs being used for digital signage 
applications.

And yes I did get a little kick out of your 720P admissions. But this 
is just common sense for this application which is NOT just a video 
play out system, but an integrated mediua application that can take 
full advantage of the display capabilities to maximize the 
functionality of the digital sign.

Regards
Craig



 
 
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