[opendtv] Re: Another Wireless PC-to-TV Idea

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 7 Oct 2010 15:29:24 -0500

Craig Birkmaier wrote:

>> Why not? It's no more difficult than adding a second video card and
>> display to the PC.
>
> Because the server identifies the device it is sending the content to;
> unless it is specifically instructed to send the version optimized for
> a TV it will likely optimize for the PC display. You may ask what
> should be different. For starters, small text will not be legible at
> TV viewing distances. And if the display is 1080i, you're in trouble;
> fortunately most new panel displays are 1080P.

Come now. Let's not be silly. You can install any video card you want in your 
PC, and you can instruct it to fill the display using any number of settings. 
All without going to a different server port.

> Are you going to have the PC render still images of the page then
> transmit them using MPEG-2 in a valid transport stream?

Think about this, Craig. You have read about UWB or 60 MHz wireless schemes to 
transmit video (uncompressed) to TV monitors, right? How do you think they 
work? Do you think ther depend on smarts inside the TV? Is there a graphics 
unit in the TV that determines whether this stream of data represents a still 
or a moving image? Or do you think that the image is transmitted at some fast 
rate, say 60 Hz or more, regardless of whether the image is still or moving, 
and that the graphics smarts in the TV monitor simply scale the image to the TV 
monitor's own resolution?

The ATSC interface is exactly the same thing, except of course, it is MPEG-2 TS 
carrying MPEG-2 compressed video and Dolby Digital audio. Just a different set 
of standards from what UWB or 60 MHz may be doing, which can be used to carry 
out the same function.

One wonders how people decades ago could be so intelligent as to know how to 
develop NTSC modulators, for this same sort of function. Instead of caving in 
instantly to excuses whose only purpose is to create yet another walled garden.

Bert
 
 
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