HomeCinemaBanter

HomeCinemaBanter (http://www.homecinemabanter.com/index.php)
-   High definition TV (http://www.homecinemabanter.com/forumdisplay.php?f=6)
-   -   1080i? (http://www.homecinemabanter.com/showthread.php?t=61972)

Anthona February 13th 09 03:46 PM

1080i?
 
I have heard of hd resolutions of 720, 1080p and now my lcd info shows
1080i. This is confusing...reminds one of ordering a coke.."do u want
a small drink, medium, large or jumbo...is this what HD is coming to?
another gimmick?

Richard Harison[_2_] February 13th 09 03:56 PM

1080i?
 
"Anthona" wrote in message
...
|I have heard of hd resolutions of 720, 1080p and now my lcd info shows
| 1080i. This is confusing...reminds one of ordering a coke.."do u want
| a small drink, medium, large or jumbo...is this what HD is coming to?
| another gimmick?

1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard



Mark A[_5_] February 13th 09 04:36 PM

1080i?
 
"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.



Ricky Jimenez February 13th 09 05:44 PM

1080i?
 
On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:

"Richard Harison" wrote in message
m...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.

And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?

Naked Gonad February 13th 09 06:02 PM

1080i?
 
Ricky Jimenez wrote:
On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:

"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard

In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.

And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?


What about the UK?
Does anyone know if the UK transmits in 1080p?

Charlie Hoffpauir February 13th 09 06:06 PM

1080i?
 
On Fri, 13 Feb 2009 11:44:36 -0500, Ricky Jimenez
wrote:

On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:

"Richard Harison" wrote in message
om...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.

And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?


I have only one piece of data on that. A few months ago there was a
Blu-ray display at Sam's. One half of the screen was "supposed" to be
Blu-ray 1080p and the other half "not", supposedly either 720p or
1080i, I'm not sure which. There was definitely a difference, with the
Blu-ray far superior, very easy to see. Of course, the purpose of the
display was to get people to buy the Blu-ray player.

FWIW...


--
Charlie Hoffpauir
http://freepages.genealogy.rootsweb.com/~charlieh/

Alan F[_2_] February 13th 09 06:24 PM

1080i?
 
Ricky Jimenez wrote:
And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?


Depends on the source material. Good quality transfer of a 35mm film
at 1080/24p, yes, it will look better. Not so good transfer with a ton
of edge enhancement? 1080/24p may not look much better. But a properly
encoded 1080/60i broadcast of a 1080/24p film source with a TV or STB
that recognizes 3:2 pulldown and generates a 1080p image can also look
very good - if it all works.

Nit point: 1080p is rather vague. There are different framerates used:
24p for movies and TV shows shot on film or the budget TV shows & movies
on 24p HD video, 25p used in the UK and Europe for TV productions, 60p
which is not really available at a consumer level.

1080i could be 1080/50i (UK & Europe PAL HD format) or 1080/60i (US).

Alan F



[email protected] February 13th 09 07:10 PM

1080i?
 
On Feb 13, 12:06*pm, Charlie Hoffpauir wrote:
On Fri, 13 Feb 2009 11:44:36 -0500, Ricky Jimenez



wrote:
On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:


"Richard Harison" wrote in message
om...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p


--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p


As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.


And how strong are the claims that you can tell the differerence
between 1080i and 1080p? *Is more likely on a 70" or greater sized
display?


I have only one piece of data on that. A few months ago there was a
Blu-ray display at Sam's. One half of the screen was "supposed" to be
Blu-ray 1080p and the other half "not", supposedly either 720p or
1080i, I'm not sure which. There was definitely a difference, with the
Blu-ray far superior, very easy to see. Of course, the purpose of the
display was to get people to buy the Blu-ray player.

FWIW...

--
Charlie Hoffpauirhttp://freepages.genealogy.rootsweb.com/~charlieh/


Interesting. What size was the screen??

[email protected] February 13th 09 07:12 PM

1080i?
 
On Feb 13, 9:46*am, Anthona wrote:
I have heard of hd resolutions of 720, 1080p and now my lcd info shows
1080i. This is confusing...reminds one of ordering a coke.."do u want
a small drink, medium, large or jumbo...is this what HD is coming to?
another gimmick?


Actually, this is old. 2-3 years ago you saw a lot of sets advertised
w/ 1080i, & many of them got good reviews. But for some reason they
disappeared almost entirely.

Mike Ray February 13th 09 08:20 PM

1080i?
 
Ricky Jimenez wrote:
On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:

"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new" picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the signal to
1080p

--
Regards,
Richard

In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN because
the smoother image is desirable for fast-action sports telecasts, whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used for
broadcast TV in the US.

And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?



I can tell you that I could not see the difference between 480i and 480p
on a 32" HDTV. Maybe my old eyes are not quick enough...lol

Charlie Hoffpauir February 13th 09 08:24 PM

1080i?
 
On Fri, 13 Feb 2009 10:10:25 -0800 (PST), "
wrote:

snip

I have only one piece of data on that. A few months ago there was a
Blu-ray display at Sam's. One half of the screen was "supposed" to be
Blu-ray 1080p and the other half "not", supposedly either 720p or
1080i, I'm not sure which. There was definitely a difference, with the
Blu-ray far superior, very easy to see. Of course, the purpose of the
display was to get people to buy the Blu-ray player.

FWIW...

--
Charlie Hoffpauir


Interesting. What size was the screen??


I don't really remember, but it was a large screen set, probably LCD
of over 40". It was set on top of a table, much higher than you'd
normally watch TV, and since it was alongside an "aisle" it was also
much closer than you'd normally be. All specifically set up to show
the difference I suppose.... but I remember being "blown away" by the
clarity of the 1080p. I have two 1080p sets, one LCD and one DLP, but
no 1080p sources, so I'm accustomed to 1080i/720p content.

--
Charlie Hoffpauir
http://freepages.genealogy.rootsweb.com/~charlieh/

The dog from that film you saw February 13th 09 08:28 PM

1080i?
 

"Naked Gonad" wrote in message
...



What about the UK?
Does anyone know if the UK transmits in 1080p?






all uk HD broadcasts are 1080i



--
Gareth.

that fly...... is your magic wand....


Naked Gonad February 13th 09 08:30 PM

1080i?
 
The dog from that film you saw wrote:

"Naked Gonad" wrote in message
...



What about the UK?
Does anyone know if the UK transmits in 1080p?






all uk HD broadcasts are 1080i



Cheers.

The dog from that film you saw February 13th 09 08:31 PM

1080i?
 

" wrote in message
...
On Feb 13, 9:46 am, Anthona wrote:
I have heard of hd resolutions of 720, 1080p and now my lcd info shows
1080i. This is confusing...reminds one of ordering a coke.."do u want
a small drink, medium, large or jumbo...is this what HD is coming to?
another gimmick?


Actually, this is old. 2-3 years ago you saw a lot of sets advertised
w/ 1080i, & many of them got good reviews. But for some reason they
disappeared almost entirely.




the only sets that can show 1080i as 1080i are CRT sets - and nobody wants
those.
you may have saw sets that took a 1080i input - but displayed it as
something else.



--
Gareth.

that fly...... is your magic wand....


[email protected] February 13th 09 08:34 PM

1080i?
 
"The dog from that film you saw" wrote:

the only sets that can show 1080i as 1080i are CRT sets - and nobody
wants those.
you may have saw sets that took a 1080i input - but displayed it as
something else.


Really? So my Mitsubishi 1080p set,
when given a 1080i signal, doesn't
show it as 1080i? What then?

Chip

--
-------------------- http://NewsReader.Com/ --------------------
Usenet Newsgroup Service $9.95/Month 30GB

The dog from that film you saw February 13th 09 09:17 PM

1080i?
 

wrote in message
...
"The dog from that film you saw" wrote:

the only sets that can show 1080i as 1080i are CRT sets - and nobody
wants those.
you may have saw sets that took a 1080i input - but displayed it as
something else.


Really? So my Mitsubishi 1080p set,
when given a 1080i signal, doesn't
show it as 1080i? What then?




it turns it into 1080p ( not that it magically becomes 1080p quality ) -
your set is a progressive device - it doesn't do interlaced - any interlaced
inputs get turned progressive.




--
Gareth.

that fly...... is your magic wand....


Richard Harison[_2_] February 13th 09 09:46 PM

1080i?
 
"The dog from that film you saw" wrote in
message ...
|
| " wrote in message
| ...
| On Feb 13, 9:46 am, Anthona wrote:
| I have heard of hd resolutions of 720, 1080p and now my lcd info shows
| 1080i. This is confusing...reminds one of ordering a coke.."do u want
| a small drink, medium, large or jumbo...is this what HD is coming to?
| another gimmick?
|
| Actually, this is old. 2-3 years ago you saw a lot of sets advertised
| w/ 1080i, & many of them got good reviews. But for some reason they
| disappeared almost entirely.
|
|
|
|
| the only sets that can show 1080i as 1080i are CRT sets - and nobody wants
| those.
| you may have saw sets that took a 1080i input - but displayed it as
| something else.
|
| --
| Gareth.
|
| that fly...... is your magic wand....

Nobody?
I am very happy with my Sony 30XS955
CRTs are still the gold standard for blacks/contrast ratio, though newer
flat screens are catching up.
I am also very happy with it because I don't plan on moving it!

--
Regards,
Richard Harison



UCLAN February 13th 09 09:47 PM

1080i?
 
Anthona wrote:

I have heard of hd resolutions of 720, 1080p and now my lcd info shows
1080i. This is confusing...reminds one of ordering a coke.."do u want
a small drink, medium, large or jumbo...is this what HD is coming to?
another gimmick?


720p and 1080i have been around for a long time. 1080p is the "newby."

Read: http://en.wikipedia.org/wiki/Display_resolution
http://en.wikipedia.org/wiki/1080i

The dog from that film you saw February 13th 09 09:56 PM

1080i?
 

"Richard Harison" wrote in message
...


| the only sets that can show 1080i as 1080i are CRT sets - and nobody
wants
| those.
| you may have saw sets that took a 1080i input - but displayed it as
| something else.
|




Nobody?
I am very happy with my Sony 30XS955
CRTs are still the gold standard for blacks/contrast ratio, though newer
flat screens are catching up.
I am also very happy with it because I don't plan on moving it!






when i say nobody, i mean the shops dont want to stock them , and if they
did, most people would rather have a large flat, hang on the wall device.




--
Gareth.

that fly...... is your magic wand....


Richard Harison[_2_] February 13th 09 10:27 PM

1080i?
 
"The dog from that film you saw" wrote in
message ...
|
| "Richard Harison" wrote in message
| ...
|
|
| | the only sets that can show 1080i as 1080i are CRT sets - and nobody
| wants
| | those.
| | you may have saw sets that took a 1080i input - but displayed it as
| | something else.
| |
|
|
|
| Nobody?
| I am very happy with my Sony 30XS955
| CRTs are still the gold standard for blacks/contrast ratio, though newer
| flat screens are catching up.
| I am also very happy with it because I don't plan on moving it!
|
|
|
|
|
|
| when i say nobody, i mean the shops dont want to stock them , and if they
| did, most people would rather have a large flat, hang on the wall device.
|
| --
| Gareth.
|
| that fly...... is your magic wand....

Comprendo!

--
Regards,
Richard Harison



[email protected] February 13th 09 11:23 PM

1080i?
 
On Feb 13, 3:17*pm, "The dog from that film you saw"
wrote:
wrote in message

...

"The dog from that film you saw" wrote:


the only sets that can show 1080i as 1080i are CRT sets - and nobody
wants those.
you may have saw sets that took a 1080i input - but displayed it as
something else.


Really? So my Mitsubishi 1080p set,
when given a 1080i signal, doesn't
show it as 1080i? What then?


it turns it into 1080p ( not that it magically becomes 1080p quality ) -
your set is a progressive device - it doesn't do interlaced - any interlaced
inputs get turned progressive.

--
Gareth.

that fly...... is your magic wand....


This makes no sense to me.

The dog from that film you saw February 13th 09 11:50 PM

1080i?
 

" wrote in message
...



Really? So my Mitsubishi 1080p set,
when given a 1080i signal, doesn't
show it as 1080i? What then?


it turns it into 1080p ( not that it magically becomes 1080p quality ) -
your set is a progressive device - it doesn't do interlaced - any
interlaced
inputs get turned progressive.




This makes no sense to me.





plasma and lcd screens are progressive devices.
they de-interlace any interlaced signal fed to them and scale it to the
resolution of the panel before displaying.
that's as simple as it gets.




--
Gareth.

that fly...... is your magic wand....


Bob Miller February 14th 09 04:38 AM

1080i?
 
wrote:
On Feb 13, 9:46 am, Anthona wrote:
I have heard of hd resolutions of 720, 1080p and now my lcd info shows
1080i. This is confusing...reminds one of ordering a coke.."do u want
a small drink, medium, large or jumbo...is this what HD is coming to?
another gimmick?


Actually, this is old. 2-3 years ago you saw a lot of sets advertised
w/ 1080i, & many of them got good reviews. But for some reason they
disappeared almost entirely.



Rear projection 1080i CRTs mostly. Plasma and LCD tech took over with
fixed pixels which lend themselves to progressive.

Bob Miller

L Alpert February 14th 09 03:19 PM

1080i?
 

"Mark A" wrote in message
...
"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new"
picture every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting
in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the
signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.


Even when on Blu-ray, is actually recorded in 1080p, or is it upscaled
to progressive scan output just like the original 480p DVD units?





L Alpert February 14th 09 03:20 PM

1080i?
 

"Ricky Jimenez" wrote in message
...
On Fri, 13 Feb 2009 10:36:43 -0500, "Mark A"
wrote:

"Richard Harison" wrote in message
om...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new"
picture
every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting
in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the
signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN
because
the smoother image is desirable for fast-action sports telecasts,
whereas
1080i is used by CBS, NBC, HBO, Showtime and Discovery HD due to the
crisper
picture particularly in non-moving shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for
broadcast TV in the US.

And how strong are the claims that you can tell the differerence
between 1080i and 1080p? Is more likely on a 70" or greater sized
display?


Hard to tell if the display upscales all inputs to 1080p (as my 70+"
unit does!).



Jan B February 14th 09 04:39 PM

1080i?
 
On Sat, 14 Feb 2009 09:19:21 -0500, "L Alpert"
wrote:


"Mark A" wrote in message
.. .
"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new"
picture every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting
in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the
signal to
1080p

--
Regards,
Richard


In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.


Even when on Blu-ray, is actually recorded in 1080p, or is it upscaled
to progressive scan output just like the original 480p DVD units?


The Blu-ray discs I have are stored either in 1080p/24 or 1080i/60.
That is, progressive in 24Hz or interlaced with half frames in 60 Hz.
/Jan

The dog from that film you saw February 14th 09 04:57 PM

1080i?
 

"Jan B" wrote in message
...
On Sat, 14 Feb 2009 09:19:21 -0500, "L Alpert"




In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.


Even when on Blu-ray, is actually recorded in 1080p, or is it upscaled
to progressive scan output just like the original 480p DVD units?


The Blu-ray discs I have are stored either in 1080p/24 or 1080i/60.
That is, progressive in 24Hz or interlaced with half frames in 60 Hz.
/Jan







does the blu ray spec allow for 1080p at 60fps ? - would be useful for discs
of sporting events.



--
Gareth.

that fly...... is your magic wand....


Thumper February 14th 09 05:37 PM

1080i?
 
On Fri, 13 Feb 2009 20:56:58 -0000, "The dog from that film you saw"
wrote:


"Richard Harison" wrote in message
...


| the only sets that can show 1080i as 1080i are CRT sets - and nobody
wants
| those.
| you may have saw sets that took a 1080i input - but displayed it as
| something else.
|




Nobody?
I am very happy with my Sony 30XS955
CRTs are still the gold standard for blacks/contrast ratio, though newer
flat screens are catching up.
I am also very happy with it because I don't plan on moving it!






when i say nobody, i mean the shops dont want to stock them , and if they
did, most people would rather have a large flat, hang on the wall device.



Too bad. In large screens the price is frequently 1/2 of an LCD for a
dlp. I love mine and don't see why people want to hang a tv on the
wall.
Thumper

Thumper February 14th 09 05:38 PM

1080i?
 
On Fri, 13 Feb 2009 22:50:35 -0000, "The dog from that film you saw"
wrote:


" wrote in message
...



Really? So my Mitsubishi 1080p set,
when given a 1080i signal, doesn't
show it as 1080i? What then?


it turns it into 1080p ( not that it magically becomes 1080p quality ) -
your set is a progressive device - it doesn't do interlaced - any
interlaced
inputs get turned progressive.




This makes no sense to me.





plasma and lcd screens are progressive devices.
they de-interlace any interlaced signal fed to them and scale it to the
resolution of the panel before displaying.
that's as simple as it gets.


Only the newer ones.
Thumper

L Alpert February 14th 09 06:24 PM

1080i?
 

"Jan B" wrote in message
...
On Sat, 14 Feb 2009 09:19:21 -0500, "L Alpert"
wrote:


"Mark A" wrote in message
. ..
"Richard Harison" wrote in message
...
1080i is the interlaced flavor of 1080
Odd lines are scanned, then even every 1/60 second for a "new"
picture every
1/30th.
The knowledgeables in this NG suggest that nobody is transmitting
in 1080P
(unlike Blu-Ray) and it is your set that eventually converts the
signal to
1080p

--
Regards,
Richard

In the USA, 720p is used by ABC, Fox Broadcasting Company and ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.


Even when on Blu-ray, is actually recorded in 1080p, or is it
upscaled
to progressive scan output just like the original 480p DVD units?


The Blu-ray discs I have are stored either in 1080p/24 or 1080i/60.
That is, progressive in 24Hz or interlaced with half frames in 60
Hz.
/Jan


Which would mean any 1080p @ 60FPS would be upscaled to progressive
scan. Most newer HDTV's do this anyway. The advertising for
delivering 1080p via cable/satellite/Blu-ray seems to be mostly sales
hype.



L Alpert February 14th 09 06:30 PM

1080i?
 

"The dog from that film you saw"
wrote in message ...

"Jan B" wrote in message
...
On Sat, 14 Feb 2009 09:19:21 -0500, "L Alpert"




In the USA, 720p is used by ABC, Fox Broadcasting Company and
ESPN
because the smoother image is desirable for fast-action sports
telecasts, whereas 1080i is used by CBS, NBC, HBO, Showtime and
Discovery HD due to the crisper picture particularly in
non-moving
shots.
http://en.wikipedia.org/wiki/720p

As mentioned you can get 1080P on blue-ray DVD but it is not used
for broadcast TV in the US.

Even when on Blu-ray, is actually recorded in 1080p, or is it
upscaled
to progressive scan output just like the original 480p DVD units?


The Blu-ray discs I have are stored either in 1080p/24 or 1080i/60.
That is, progressive in 24Hz or interlaced with half frames in 60
Hz.
/Jan







does the blu ray spec allow for 1080p at 60fps ? - would be useful
for discs of sporting events.


I guess it depends. Can enough data fit on a BR disc to support a
full length feature (2-3 hrs) at 1080p?

A european TV broadcast article about data rates. Note that US
broadcasts are at 60hz would contain about 20% more data....
http://www.televisionbroadcast.com/article/23408



--
Gareth.

that fly...... is your magic wand....





All times are GMT +1. The time now is 01:27 PM.

Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
HomeCinemaBanter.com