[mythtv-users] OT: HDTV TV's

[Michael T. Dean]

On 05/11/2006 12:19 PM, Mike Frisch wrote:
> On Thu, May 11, 2006 at 11:58:19AM -0400, Michael T. Dean wrote:
>   
>> Exactly.  And, technically, a 1920x1080 (1080p) display cannot fully 
>> resolve a 1920x1080 input signal (whether 1080i or 1080p).  As a matter 
>> of fact, a 1920x1080 (1080p) display cannot even fully resolve a 
>> 1280x720 input signal (i.e. 720p).
>>     
> I'm not following you here...  By "resolve", I mean that all 1920x1080
> pixels are represented as a distiguishable, albeit very small, and
> individually addressable point of light.  Is your definition of
> "resolve" different than that?

Basically, I'm saying there's more information available in the input 
signal than can be represented by an output device using a 1:1 pixel 
mapping.

To get an idea of what I mean, play back a 720x480 anamorphic 
widescreen, commercial DVD on a 4:3 CRT that's set to use 640x480 (i.e. 
with Xrandr/Ctrl-Alt-"Numpad +"/Ctrl-Alt-"Numpad -") and have the player 
cut off the left and right (i.e. to get a 1:1 pixel mapping--a 4:3 DVD 
(whether a 4:3 show or letterboxed widescreen) uses non-square pixels, 
but your display doesn't, so you'd get scaling).  Then, change the CRT 
to 1280x960 and do the same.  The image is significantly better looking 
at 1280x960 even though the pixels are "resolved" (by your definition) 
at 640x480.

Mike