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HDTV Sets That Upconvert 480i Cable?



 
 
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  #1  
Old October 25th 09, 11:06 PM posted to alt.tv.tech.hdtv
RichardF
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Posts: 1
Default HDTV Sets That Upconvert 480i Cable?

Presently I am using a DVD recorder with an integrated NTSC-ATSC cable/
OTA tuner to feed demodulated, analog cable video to my bedroom 19"
diag HDTV set, via an HDMI connection. This allows me to receive HDTV
broadcasts directly when I switch to the antenna input on the HDTV
set, and still access the channels on my analog (Comcast) cable feed
when switching the HDTV set to an HDMI input.

I've noticed that if I set the HDMI output of my DVD recorder to 720p
or above that the HDTV display from those analog 480i cable channels
is better than native 480i analog (as might be expected).

Now I'm looking for a 26" diag HDTV set for another room. Do any 26"
HDTV sets provide this upconversion of their analog cable input from
480i to 720p video internally, without resorting to the above
approach?

TIA.
  #2  
Old October 25th 09, 11:14 PM posted to alt.tv.tech.hdtv
The dog from that film you saw
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Posts: 587
Default HDTV Sets That Upconvert 480i Cable?


"RichardF" wrote in message
...
Presently I am using a DVD recorder with an integrated NTSC-ATSC cable/
OTA tuner to feed demodulated, analog cable video to my bedroom 19"
diag HDTV set, via an HDMI connection. This allows me to receive HDTV
broadcasts directly when I switch to the antenna input on the HDTV
set, and still access the channels on my analog (Comcast) cable feed
when switching the HDTV set to an HDMI input.

I've noticed that if I set the HDMI output of my DVD recorder to 720p
or above that the HDTV display from those analog 480i cable channels
is better than native 480i analog (as might be expected).

Now I'm looking for a 26" diag HDTV set for another room. Do any 26"
HDTV sets provide this upconversion of their analog cable input from
480i to 720p video internally, without resorting to the above
approach?






all hdtvs upscale all inputs - whether that be to 720p or 1080p
otherwise you'd have a picture sitting in a black border.


--
Gareth.

that fly...... is your magic wand....
http://dsbdsb.mybrute.com
you fight better when you have a bear!

  #3  
Old October 27th 09, 01:56 PM posted to alt.tv.tech.hdtv
Mikepier
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Posts: 210
Default HDTV Sets That Upconvert 480i Cable?

On Oct 25, 6:06*pm, RichardF wrote:
Presently I am using a DVD recorder with an integrated NTSC-ATSC cable/
OTA tuner to feed demodulated, analog cable video to my bedroom 19"
diag HDTV set, via an HDMI connection. *This allows me to receive HDTV
broadcasts directly when I switch to the antenna input on the HDTV
set, and still access the channels on my analog (Comcast) cable feed
when switching the HDTV set to an HDMI input.

I've noticed that if I set the HDMI output of my DVD recorder to 720p
or above that the HDTV display from those analog 480i cable channels
is better than native 480i analog (as might be expected).

Now I'm looking for a 26" diag HDTV set for another room. *Do any 26"
HDTV sets provide this upconversion of their analog cable input from
480i to 720p video internally, without resorting to the above
approach?

TIA.


Your TV will automatically upscale to it's native resolution, or you
can have the source ( the DVD recorder) do the upscaling, it depends
what does a better job to your eye.
If I understand , you have no STB, just direct cable to your TV. Plus
you have an OTA antenna(?) So it seems the only HD channels you can
get are the clear qam from cable, and the OTA HD from the antenna. My
question is does you DVD player actually output through the HDMI cable
true HD? I thought they downconvert to 480i. You might get better
results hooking up the cable/OTA directly to the TV
  #4  
Old October 30th 09, 03:15 PM posted to alt.tv.tech.hdtv
CLicker[_2_]
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Posts: 346
Default HDTV Sets That Upconvert 480i Cable?


"RichardF" wrote in message
...
Presently I am using a DVD recorder with an integrated
NTSC-ATSC cable/
OTA tuner to feed demodulated, analog cable video to my
bedroom 19"
diag HDTV set, via an HDMI connection. This allows me to
receive HDTV
broadcasts directly when I switch to the antenna input on the
HDTV
set, and still access the channels on my analog (Comcast)
cable feed
when switching the HDTV set to an HDMI input.

I've noticed that if I set the HDMI output of my DVD recorder
to 720p
or above that the HDTV display from those analog 480i cable
channels
is better than native 480i analog (as might be expected).

Now I'm looking for a 26" diag HDTV set for another room. Do
any 26"
HDTV sets provide this upconversion of their analog cable
input from
480i to 720p video internally, without resorting to the above
approach?

TIA.


http://www.amazon.com/VIZIO-quot-108.../dp/B002MQ1FQS

Note: upconversion mentioned but would be nice to know what
(whose) algorithm they're using.

Also, upconversion is not the same as scaling. Both will fill
the screen in the nearest dimension, but the former will improve
the picture while the latter will degrade it.


  #5  
Old October 30th 09, 04:16 PM posted to alt.tv.tech.hdtv
G-squared
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Posts: 1,487
Default HDTV Sets That Upconvert 480i Cable?

On Oct 30, 7:15*am, "CLicker" wrote:
snip
http://www.amazon.com/VIZIO-quot-108.../dp/B002MQ1FQS

Note: upconversion mentioned but would be nice to know what
(whose) algorithm they're using.

Also, upconversion is not the same as scaling. *Both will fill
the screen in the nearest dimension, but the former will improve
the picture while the latter will degrade it.


Do you have a link about scaling vs upconversion? I've never heard
that one before.


  #6  
Old October 30th 09, 06:00 PM posted to alt.tv.tech.hdtv
The dog from that film you saw
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Posts: 587
Default HDTV Sets That Upconvert 480i Cable?


"G-squared" wrote in message
...
On Oct 30, 7:15 am, "CLicker" wrote:
snip
http://www.amazon.com/VIZIO-quot-108.../dp/B002MQ1FQS

Note: upconversion mentioned but would be nice to know what
(whose) algorithm they're using.

Also, upconversion is not the same as scaling. Both will fill
the screen in the nearest dimension, but the former will improve
the picture while the latter will degrade it.


Do you have a link about scaling vs upconversion? I've never heard
that one before.




define improve - do people really think the hdtv can magic new non existent
picture info out of thin air?



--
Gareth.

that fly...... is your magic wand....
http://dsbdsb.mybrute.com
you fight better when you have a bear!

  #7  
Old October 30th 09, 10:11 PM posted to alt.tv.tech.hdtv
CLicker[_2_]
external usenet poster
 
Posts: 346
Default HDTV Sets That Upconvert 480i Cable?


"G-squared" wrote in message
...
On Oct 30, 7:15 am, "CLicker" wrote:
snip

http://www.amazon.com/VIZIO-quot-108.../dp/B002MQ1FQS

Note: upconversion mentioned but would be nice to know what
(whose) algorithm they're using.

Also, upconversion is not the same as scaling. Both will fill
the screen in the nearest dimension, but the former will

improve
the picture while the latter will degrade it.


Do you have a link about scaling vs upconversion? I've never
heard
that one before.



Sorry, all I see are forums with the subject discussed - and
like my own statement, they're just opinion. The difference,
FMNSVHPOV, is more than semantics. We've had digital scaling
algorithms for more than a decade. Most are way more than
adequate when scaling an image onto a 4:3 screen of 32" or less.

NB: a 620x480 image on a 96 dpi LCD monitor is 6 1/2" x 5"
before scaling. A 1920x1080 screen at 96 dpi is 20" x 11 1/4"
and as the screen size doubles the dpi halves. Therefore,
scaling the same image to 16:9 on a 50" or larger screen (and
I'll attest to such images on my 42" equipment) requires a more
complex algorithm to get closer to how the image would look in
its native size. And don't forget that lower bit rates mean
less info about each pixel - i.e. poorer quality.

So the algorithms created by Faroujia, Toshiba, and the BD
consortium are called "upconversion" and patented because they
produce better results than the older algorithms we've long
called scaling. Were I to have chosen the terminology, I'd have
used HD scaling vs. SD scaling, but I wasn't asked;-0)


 




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