[mythtv-users] OT: HDTV TV's

Daniel Kristjansson danielk at cuymedia.net
Thu May 11 13:24:29 EDT 2006


On Thu, 2006-05-11 at 11:58 -0400, Michael T. Dean wrote:
> On 05/10/2006 03:01 PM, Mike Frisch wrote:
> Exactly.  And, technically, a 1920x1080 (1080p) display cannot fully 
> resolve a 1920x1080 input signal (whether 1080i or 1080p).
Not true. A 1920x1080 display can fully resolve a 1080i/p image.

But if it is not a CRT, a 1920x1080 display can not fully resolve
a 720p image unless you severely letterbox that image. In order
to fully resolve both 720p and 1080i in an edge to edge display
you need 3840x2160 pixels.

A 1920x1080 CRT will work with both resolutions because they in fact
do have a high resolution shadow mask (i.e > 3840x2160), and the
advertised resolution is actually limited by the scanning rate, which
is considerably less than the physical number of pixels.

-- Daniel



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