What qualifies as "high definition display"?

[Sanjay]

I have seen a lot of displays advertised as "High Definition" - from LCD &
Plasma big TV's and some Pj's. My question is: When can a display be called
"High Definition" ?

I am going to buy a High Definition Set Top Box "HD STB" and obviously want
a display to show off the superb picture. I have not decided on type of
display - LCD or Plasma or Projector - but what ever it is, it must be
capable of HD display. Thanks, Steve

[flyinyereye]

"Sanjay" <steve_aust@hotmail.com> wrote in message
news:41172739@dnews.tpgi.com.au...
>I have seen a lot of displays advertised as "High Definition" - from LCD &
> Plasma big TV's and some Pj's. My question is: When can a display be
> called
> "High Definition" ?
>
> I am going to buy a High Definition Set Top Box "HD STB" and obviously
> want
> a display to show off the superb picture. I have not decided on type of
> display - LCD or Plasma or Projector - but what ever it is, it must be
> capable of HD display. Thanks, Steve

They use terms like "HD ready" and "HD capable" which usually means the
screen/set will accept an HD signal through its inputs and then downconvert
to the resolution of the actual screen. The only true HD screens are one
which will actualy display a resolution of 576p or better. And plenty will
argue that 576p is not really "HD" anyway, however this is how the ABA have
defined it.

So ask what the actual screen resolution is before you buy and beware the
marketing scam that is "HD ready".

[Gadgets]

Adding to the last post, it's worth checking if it can also handle 720p and
1080i

--
Cheers, Jason (remove ... to reply)
Online DVD Rental Comparison:
http://gadgetaus.com/dvdrental.html

[geoff]

if you want to be able to show off high def you need at least 1280X720
(720p) display




"Sanjay" <steve_aust@hotmail.com> wrote in message
news:41172739@dnews.tpgi.com.au...
> I have seen a lot of displays advertised as "High Definition" - from LCD &
> Plasma big TV's and some Pj's. My question is: When can a display be
called
> "High Definition" ?
>
> I am going to buy a High Definition Set Top Box "HD STB" and obviously
want
> a display to show off the superb picture. I have not decided on type of
> display - LCD or Plasma or Projector - but what ever it is, it must be
> capable of HD display. Thanks, Steve
>
>

[David]

im guessing the 'i' is for interlaced...whats does the 'p' stand for?

Gadgets wrote:
> Adding to the last post, it's worth checking if it can also handle 720p and
> 1080i
>

[Steve Batt]

"David" <dontneedone@somewhere.com> wrote in message
news:cf97li$155$1@yeppa.connect.com.au...
> im guessing the 'i' is for interlaced...whats does the 'p' stand for?
>
> Gadgets wrote:
> > Adding to the last post, it's worth checking if it can also handle 720p
and
> > 1080i
> >

p = progressive

Steve

[Chris of 76]

just forget about it, no such display exists to show high definition.
just be happy with something cheaper.
please look up kell factor if you want proof. even a 1024 res panel is a
512. its all a marketing gimmick.
Chris
"Sanjay" <steve_aust@hotmail.com> wrote in message
news:41172739@dnews.tpgi.com.au...
> I have seen a lot of displays advertised as "High Definition" - from LCD &
> Plasma big TV's and some Pj's. My question is: When can a display be
called
> "High Definition" ?
>
> I am going to buy a High Definition Set Top Box "HD STB" and obviously
want
> a display to show off the superb picture. I have not decided on type of
> display - LCD or Plasma or Projector - but what ever it is, it must be
> capable of HD display. Thanks, Steve
>
>

[Goforit]

How is that so?


"Chris of 76" <Idont@thinkso.com> wrote in message
news:411a0072$0$16331$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
> just forget about it, no such display exists to show high definition.
> just be happy with something cheaper.
> please look up kell factor if you want proof. even a 1024 res panel is a
> 512. its all a marketing gimmick.
> Chris
> "Sanjay" <steve_aust@hotmail.com> wrote in message
> news:41172739@dnews.tpgi.com.au...
> > I have seen a lot of displays advertised as "High Definition" - from LCD
&
> > Plasma big TV's and some Pj's. My question is: When can a display be
> called
> > "High Definition" ?
> >
> > I am going to buy a High Definition Set Top Box "HD STB" and obviously
> want
> > a display to show off the superb picture. I have not decided on type of
> > display - LCD or Plasma or Projector - but what ever it is, it must be
> > capable of HD display. Thanks, Steve
> >
> >
>
>

[Andrew Reilly]

If you google for "kell factor", you'll get a page that pretty
much describes sampling theory, as applied to visual signals. It
is, therefore, not relevant to the question of the pixel
resolution of a particular display device. It (Kell factor)
relates to the resolution of *image details* by any sampled
imaging system. So all pixel-based imaging systems are going to
have the same issue. So you might as well use the same
measurement convention as everyone else, which is to count
addressable pixels.

Having said that, I was in the Sony shop in Ginza last weekend and
they have some very nice looking DLP-style projectors using their
own chips (not TIs) that they claim are full 1920x1280. There
were some fully high-res CRTs on display too. I don't know
whether either of these were available for sale, yet, though.

So yes, there are high-res displays available. Whether they're
necessarily better in any ways that matter than displays that
don't quite have the full compliment of pixels, I'll leave to the
reviewers. My TV is standard def and I'm happy with it.

Goforit wrote:

> How is that so?
>
>
> "Chris of 76" <Idont@thinkso.com> wrote in message
> news:411a0072$0$16331$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
>
>>just forget about it, no such display exists to show high definition.
>>just be happy with something cheaper.
>>please look up kell factor if you want proof. even a 1024 res panel is a
>>512. its all a marketing gimmick.
>>Chris
>>"Sanjay" <steve_aust@hotmail.com> wrote in message
>>news:41172739@dnews.tpgi.com.au...
>>
>>>I have seen a lot of displays advertised as "High Definition" - from LCD
>
> &
>
>>>Plasma big TV's and some Pj's. My question is: When can a display be
>>
>>called
>>
>>>"High Definition" ?
>>>
>>>I am going to buy a High Definition Set Top Box "HD STB" and obviously
>>
>>want
>>
>>>a display to show off the superb picture. I have not decided on type of
>>>display - LCD or Plasma or Projector - but what ever it is, it must be
>>>capable of HD display. Thanks, Steve
>>>
>>>
>>
>>
>
>

--
Andrew

[angryofmayfair]

> just forget about it, no such display exists to show high definition.
> just be happy with something cheaper.
> please look up kell factor if you want proof. even a 1024 res panel is a
> 512. its all a marketing gimmick.
> Chris


That's total BS.
Which ever way you look at it there are 1024 horizontal rows of pixels and
1024 vertical rows of pixels to make up the picture. That's over 1 million
pixels.
Just because only half of them are lit at any particular time doesn't take
anything away from that fact, refresh rate and persistence of vision take
care of any question of only seeing half the resolution of the panel.
You might as well say a standard tv crt screen has a one line resolution as
there's just one line of phosphers lit at any one time on a crt tube as it
is scanned....

[Goforit]

"Andrew Reilly" <areilly-newspost@areilly.bpc-users.org> wrote in message
news:2nugcqF4vcsdU1@uni-berlin.de...
> If you google for "kell factor", you'll get a page that pretty
> much describes sampling theory, as applied to visual signals. It
> is, therefore, not relevant to the question of the pixel
> resolution of a particular display device. It (Kell factor)
> relates to the resolution of *image details* by any sampled
> imaging system. So all pixel-based imaging systems are going to
> have the same issue. So you might as well use the same
> measurement convention as everyone else, which is to count
> addressable pixels.
>
> Having said that, I was in the Sony shop in Ginza last weekend and
> they have some very nice looking DLP-style projectors using their
> own chips (not TIs) that they claim are full 1920x1280. There
> were some fully high-res CRTs on display too. I don't know
> whether either of these were available for sale, yet, though.
>
> So yes, there are high-res displays available. Whether they're
> necessarily better in any ways that matter than displays that
> don't quite have the full compliment of pixels, I'll leave to the
> reviewers. My TV is standard def and I'm happy with it.

Thanks for the explanation.

[laurie]

Chris of 76 just forget about it, no such display exists to show high definition.

Well that's not exactly true see here http://www.carltonaudiovisual.com.au/?q=node/view/503 (Display Link)

cheers laurie

[Trevor S]

laurie <laurie.1avc2y@no-mx.forums.eyo.com.au> wrote in
news:laurie.1avc2y@no-mx.forums.eyo.com.au:

> http://www.carltonaudiovisual.com.au/?q=node/view/503'

That's a sweet lookin' bit of kit. I have its baby brother in the bedroom
and the low contrast ratio was the main thing that annoyed me. Any idea of
the $ ? < $20K ?

--
Trevor S


"Unthinking respect for authority is the greatest enemy of truth."
-Albert Einstein

[laurie]

That's a sweet lookin' bit of kit. I have its baby brother in the bedroom
and the low contrast ratio was the main thing that annoyed me. Any idea of
the $ ? < $20K ?

--
Trevor S


Hi Trevor long time no speak [Sony 10HT]

Been keeping an eye out was told end September! approx $15000 but that's to HI-Fi dealers first, expect price to drop when retailers get hold of displays was told by a few that first shipement sold out I believe also the refresh rate is excellent
cheers laurie