Dirk Meyer wrote:
> Jason Tackaberry wrote:
>> On Fri, 2009-01-23 at 10:55 +0100, Duncan Webb wrote:
>>> When comparing the picture quality of TV broadcasts from CRT TVs and TFT
>>> TVs the picture quality was simply much better with the CRTs.
>> I'm rather tempted to say the reason is, paradoxically, because of the
>> added (temporal) resolution and (spacial) clarity in the newer
>> progressive displays.  My best guess is that thanks to phosphor decay in
>> CRTs, you effectively get the rough equivalent of a blend deinterlacer
>> for each pair of fields, which also serves to smooth out artifacts and
>> other noise that are rampant in analogue and lower resolution
>> broadcasts.
>>
>> So, maybe apply a gaussian blur to every frame coming from an analogue
>> source before displaying to a progressive HD display and it might look
>> "equivalent" to your average CRT. :)
> 
> I guess it depends on the source. Years ago I watched a VCD on my
> monitor because my TV was broken. The result was very bad. But for
> analog TV broadcasts you can record in higher quality, PAL/NTSC isn't
> that bad. But you shouldn't use the small VCD resolution. If you record
> the full 480 or 576 pixel height, the quality is ok.

I guess too that it depends on the source. When I was talking about
watching analogue TV, I was meaning using the TVs decoder to watch the
source directly from the incoming cable connection. The TV supports
analogue and DVB-T and the picture quality with either connection is
simply poor compared to the CRT TV.

Until the channels become HD it is worth keeping the CRT TV to watch SD
material.

I guess that the main driving force to TFTs will be the power of
marketing and HD material. So the time-scale for everyone having TFTs
maybe longer than a couple of years and really depends on the broadcasters.

Duncan

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