Re: OT: PLASMA, LCD, OR REAR PROJECTION?

On Feb 2, 7:17 pm, The Hammer <LHNewsgr...@xxxxxxxxxxx> wrote:
in article 06d67cd9-e10e-49b5-9c30-3ea6dfbe0...@xxxxxxxxxxxxxxxxxxxxxxxxxxx,
acarpen...@xxxxxxxxxxxx at acarpen...@xxxxxxxxxxxx wrote on 2/1/08 12:43 PM:

Even if your sattelite system, cable company transmit in HD
signal strength affect the quality.

Signal strength affects analog signals and digital signals in a different
way. Weak analog signals causes snow. Digital is different: either it
comes through perfectly, or you don't see it all all (or suffer from
frequent drop outs which makes it unwatchable).

It is not signal strength that affects HD quality. It is bit rate and
encoding method.

As cable and satellite companies try to cram more stations into their
bandwidth, picture quality will suffer. In many cases, the only way to see
true HD 720p or 1080i is with an antenna for over the air reception.

HDDVD has only been around for a little over a year to where
movies are filmed with this technology. Anything filmed previous will
be digitally upconverted. It would be like the difference of hearing
actual 5.1 digitally recorded surround sound vs. hearing a non dolby
digital recording through processing chip to give the impression it
was recorded that way. Again upconverted HDDVDs are beautiful but is
it worth it to pay the premium.

"Anything filmed previous will be digitally upconverted."

Not true. Anything that was filmed (vs. videotaped) can be converted to the
new 1080p. That includes almost any film ever made and many TV shows.

Old movies can look spectacular. I am looking forward to the Blu Ray
version of Lawrence of Arabia.

The quality of the film will limit how it will look on 1080p. A good movie
film stock has way more resolution than HD.

A piece of 35 mm film can contain about 6000 - 9750 pixels along the
length and between 4000 - 6500 pixels in height. The total resolution of a
35 mm film would then contain: 4000 x 6000 to 6500 x 9750 pixels

6000 X 4000 = 24,000,000 pixels (24 Megapixels) worst case
9750 X 6500 = 64,000,000 pixels (64 Megapixels) best case

1080 HD TV has 1,080 scan lines x 1,920 pixels/line = 2,073,600 pixels (2
Megapixels)

So a 35 mm film from an old movie or old TV show can have 24 Megapixels or
more vs. 1080 HD TV which can display only 2 Megapixels per frame.

So a 35 mm film blows away HD TV. Of course, many movies were filmed in 70
mm.

The analogy to mono or stereo sound vs. digital 5.1 is inaccurate.

What you're saying about resolution is true but what the previous
poster states is true as well.Not all movies/shows are going to under-
go an expensive tele-cine HD re-mastering.Unfortunately,given what the
cable and sat providers are giving already,you can bet your ass that
the majority will be cheap-o up conversion transmissions just to
fulfill the BARE minimum of the mandated Digital(often misnomered
HDTV) standard of which even 480P is allowed.The law actually states
that all broadcasts just have to be digital and NOT
analog.Unfortunately the lowest cost solution will always win.Ohhh
joy,Golden Girls in 480P for everyone ;)
.

Relevant Pages

  • Re: OT: PLASMA, LCD, OR REAR PROJECTION?
    ... Signal strength affects analog signals and digital signals in a different ... It is not signal strength that affects HD quality. ... Old movies can look spectacular. ... The quality of the film will limit how it will look on 1080p. ...
    (rec.games.pinball)
  • Re: No signal is being received message
    ... Maplins will probably have cable and LNB's, ... the finest quality, but should be adequate. ... Are signal strength and quality low and fluctuating? ... If so disconnect both ends of coax, ...
    (uk.tech.tv.sky)
  • Re: Missing channels ?
    ... I managed to get only 40% on the quality and 50/60> ish ... > channels to be honest. ... approximate measurement of signal strength and quality. ...
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  • Re: Signal quality
    ... quality whilst I did the business in the loft. ... I unscrewed the cable terminals and removed the coax, ... I remade the connections and went down to the TV. ... and steady whilst signal strength stayed at 5. ...
    (uk.tech.digital-tv)
  • Re: Cable Modem Problem..
    ... It's synchs at full speed on reboot and as it experiences transmission error it steps down to a lower speed. ... The tech at the other end may only be able to measure signal strength which is not sufficient to determine quality, so you may have to schedule a field tech to come out to your house to measure line quality at the entry point to your house. ...
    (microsoft.public.windowsxp.basics)
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