[mythtv-users] OT: Buying a new TV - Sharp Quattron or 3D?

[Joe Hickey]

On Wed, Jun 8, 2011 at 10:03 AM, James Oltman <cnlibmyth at gmail.com> wrote:
> On 08/06/2011 13:59, Mark Lord wrote:
>>
>> > On 11-06-06 11:14 AM, Eric Sharkey wrote:
>> >> On Sat, Jun 4, 2011 at 10:27 AM, R. G. Newbury<newbury at mandamus.org>
>> >>  wrote:
>> >>> Regarding the TV itself. If you get good HD transmission and like
>> >>> watching sports, then the 120/240 refresh rate feature will be
>> >>> worthwhile.
>> >>
>> >> Is anyone broadcasting sports at more than 60Hz?  I doubt it.  The
>> >> reason to buy a 120Hz TV over a 60Hz model is that 120Hz is an integer
>> >> multiple of 24, so movies shot at that frame rate can be shown more
>> >> smoothly than on a 60Hz set.  (Look up "Inverse telecine".)  For
>> >> sports broadcasts, you shouldn't see any difference at all.
>> >
>> > But I do see a difference, real and very very visible,
>> > on pretty much any/all programming and/or videos.
>> >
>> > Watching TV native on the 120Hz Samsung shows a visibly smoother
>> > playback of everything
>
> From what I understand, a TV capable of "120Hz" isn't capable of receiving a
> 120Hz signal.  It will only receive a 24Hz, 30Hz and 60Hz signal then
> quintuple, quadruple, or double the frame rate to give you 120Hz.  TVs that
> are capable of 240Hz AND are 3D are capable of receiving 120Hz material, as
> the 3D signal needs that frame rate to do it's "3D-ness".  Again, I could be
> wrong, but this is how I always understood it.

I can confirm that is true, at least with my Sharp Aquos "120Hz"
panel.  The max input rate is still 60Hz, it just internally drives
the panel at the higher rate.  Supposedly helps with 24Hz movie
content due to it being an integer multiple, which makes sense,
although I never had the opportunity to do a side-by-side comparison
with the 60Hz-only version of the same TV when playing a movie to see
for myself.  There is no content AFAIK that is actually captured at
120hz frame rate (3d stuff excluded -- I just ignore that as a passing
fad).  The TV _can_ do some motion-compensation stuff as part of its
video processing when bumping up the frame rate, though -- depending
on the manufacturer and how much effort they put in.