Determining OTA broadcast resolution

[bobt]

Archived from groups: alt.tv.tech.hdtv (More info?)

Is there any way to determine the native, as broadcast, resolution and
aspect ratio of an OTA signal?

My tuner (Samsung SIR-T351) converts all signals to a selected
resolution--I use 1080i--but apparently does not provide a way to
determine the native characteristics of the incoming signal.

 

[Guest]

Archived from groups: alt.tv.tech.hdtv (More info?)

I got the Same Model and have had it only about 1 week, I love it. I
originaly had a LG, and I keep getting Droped outs, Pixelated etc, took it
back and am sure glad I did.
Yes I have it on 1080 also, and when they come to a commercial, I can
hear the POP of the switch in the speakers when they drop the HD and go SD.

"BobT" <fake@invalid.net> wrote in message
news:4qhlf052jed8e9u05r45kemohbjish03nh@4ax.com...
>
> Is there any way to determine the native, as broadcast, resolution and
> aspect ratio of an OTA signal?
>
> My tuner (Samsung SIR-T351) converts all signals to a selected
> resolution--I use 1080i--but apparently does not provide a way to
> determine the native characteristics of the incoming signal.
>

 

[Guest]

Archived from groups: alt.tv.tech.hdtv (More info?)

BobT <fake@invalid.net> wrote in news:4qhlf052jed8e9u05r45kemohbjish03nh@
4ax.com:

>
> Is there any way to determine the native, as broadcast, resolution and
> aspect ratio of an OTA signal?
>
> My tuner (Samsung SIR-T351) converts all signals to a selected
> resolution--I use 1080i--but apparently does not provide a way to
> determine the native characteristics of the incoming signal.
>
>

In your case, the tuner converts everything to 1080i. No further action
required on your part. You always set the output of the tuner to the native
resolution of your set.

Dave

 

[bobt]

Archived from groups: alt.tv.tech.hdtv (More info?)

On Sun, 18 Jul 2004 22:42:26 GMT, Dave Solly <none@where.com> wrote:



>In your case, the tuner converts everything to 1080i. No further action
>required on your part. You always set the output of the tuner to the native
>resolution of your set.
>
>Dave

Of course, but my question is how do I determine the native
resolution/aspect ratio of the broadcast signal.
Is this, in fact, possible without additional equipment?

 

[Guest]

Archived from groups: alt.tv.tech.hdtv (More info?)

In article <2pgnf05o3r75j4u58gcbtufig10cvq9gl9@4ax.com>,
fake@invalid.net says...
> Of course, but my question is how do I determine the native
> resolution/aspect ratio of the broadcast signal.
> Is this, in fact, possible without additional equipment?

Depends on your receiver. If it has a passthrough or "native" mode,
where it outputs video at whatever scan rate it recieved the signal,
and if it has some indicator (or your TV does), then it's possible.
If your reciever just converts everything to 1080i, then it's not. I
have a Sony HD300 rx and a XBR910 and both display the scan rate they
are operating at (the xbr910 only with a lot of key presses on the
remote).

Note that this only displays the *transmitted* scan rate. If the
station (or network feed) takes a SD 480i image and converts it to
1080i for transmission, your rx and monitor will show receiving
1080i, but the image will not be HD quality. The only way to
determine the actual resolution of the image requires an expensive
piece of equipment called a spectrum analizer to determine the
highest frequencies present in the video stream.

/Chris, AA6SQ

 

[bobt]

Archived from groups: alt.tv.tech.hdtv (More info?)

On Mon, 19 Jul 2004 07:52:11 -0700, Chris Thomas
<cthomas@mminternet.com> wrote:


>Depends on your receiver. If it has a passthrough or "native" mode,
>where it outputs video at whatever scan rate it recieved the signal,
>and if it has some indicator (or your TV does), then it's possible.
>If your reciever just converts everything to 1080i, then it's not. I
>have a Sony HD300 rx and a XBR910 and both display the scan rate they
>are operating at (the xbr910 only with a lot of key presses on the
>remote).
>
>Note that this only displays the *transmitted* scan rate. If the
>station (or network feed) takes a SD 480i image and converts it to
>1080i for transmission, your rx and monitor will show receiving
>1080i, but the image will not be HD quality. The only way to
>determine the actual resolution of the image requires an expensive
>piece of equipment called a spectrum analizer to determine the
>highest frequencies present in the video stream.
>
>/Chris, AA6SQ

Many thanks. I feared it might require a native-mode-capable receiver
(which the Samsung SIR-T351 is not), but did not realize all the
implications, such as possible pre-broadcast conversion.