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Scott Harrison
12-11-2004, 03:33 PM
Does anyone know of a decoder available (STB or PC card) on the Aus
market that can output a 1080i signal at 60hz rather than the standard
aus 50hz ?

Relative of mine is considering brining a HD screen from the states
over here.

Thanks.

Steve Simpson
12-11-2004, 07:43 PM
> Does anyone know of a decoder available (STB or PC card) on the Aus
> market that can output a 1080i signal at 60hz rather than the standard
> aus 50hz ?
>
> Relative of mine is considering brining a HD screen from the states
> over here.

I'm not sure but aren't HDTVs multi-standard? If not, then they should
be... :-\

Stephen Neal
13-11-2004, 01:03 AM
Steve Simpson wrote:
>> Does anyone know of a decoder available (STB or PC card) on the Aus
>> market that can output a 1080i signal at 60hz rather than the
>> standard aus 50hz ?
>>
>> Relative of mine is considering brining a HD screen from the states
>> over here.
>
> I'm not sure but aren't HDTVs multi-standard? If not, then they
> should be... :-\

Nope - AIUI there aren't a huge number of US CRT HDTVs that are 50Hz
compatible. Projectors, LCDs and Plasmas are a different matter.

The problem with converting a 50Hz HDTV broadcast to 60Hz for display is
that you effectively have to standards convert the HDTV signal.
Broadcasters pay tens of thousands of dollars to buy kit to do this - and
even this causes some quality drop. A sub $1000 STB or PC is unlikely to
perform anywhere near as well...

Steve

Louis Solomon [SteelBytes]
13-11-2004, 11:53 AM
yes, it's true that if you need to convert between 50 & 60 and output it,
then cost and quality make it not so fun.

but if the CRT can have it's refresh rate changed by it's electronics to
match the source signal, then it's no real problem. and this is
realistic/common. think of PC monitors for example, they just sync to and
refresh at what ever rate they are feed (with in limits).

--
Louis Solomon
www.SteelBytes.com

"Stephen Neal" <stephen.neal@nospam.please.as-directed.com> wrote in message
news:cn2fl0$m3u$1$8302bc10@news.demon.co.uk...
> Steve Simpson wrote:
>>> Does anyone know of a decoder available (STB or PC card) on the Aus
>>> market that can output a 1080i signal at 60hz rather than the
>>> standard aus 50hz ?
>>>
>>> Relative of mine is considering brining a HD screen from the states
>>> over here.
>>
>> I'm not sure but aren't HDTVs multi-standard? If not, then they
>> should be... :-\
>
> Nope - AIUI there aren't a huge number of US CRT HDTVs that are 50Hz
> compatible. Projectors, LCDs and Plasmas are a different matter.
>
> The problem with converting a 50Hz HDTV broadcast to 60Hz for display is
> that you effectively have to standards convert the HDTV signal.
> Broadcasters pay tens of thousands of dollars to buy kit to do this - and
> even this causes some quality drop. A sub $1000 STB or PC is unlikely to
> perform anywhere near as well...
>
> Steve
>

Steve Simpson
13-11-2004, 12:23 PM
> yes, it's true that if you need to convert between 50 & 60 and output it,
> then cost and quality make it not so fun.
>
> but if the CRT can have it's refresh rate changed by it's electronics to
> match the source signal, then it's no real problem. and this is
> realistic/common. think of PC monitors for example, they just sync to and
> refresh at what ever rate they are feed (with in limits).

I find it hard to believe that HDTV manufacturers would make their TVs only
work with either 50 or 60Hz. Multi-standard PAL/NTSC TVs have been common
for years now and I can't see why HDTV would be any different.

Mike
13-11-2004, 07:33 PM
Stephen Neal wrote:

> The problem with converting a 50Hz HDTV broadcast to 60Hz for display is
> that you effectively have to standards convert the HDTV signal.

Not at all.
AFAIK, all LCD monitors refresh at 60Hz. But 25fps videos (progressive,
or de-interlaced) look just fine on a 60Hz LCD or 70Hz CRT monitor.

There is no 50-60fps conversion needed - its much simpler. The computer
generates a 25fps progressive, and frames are held for 2 or 3 refresh
cycles. I don't see any jerkiness resulting. Or is it more complex?

Do plasma displays de-interlace to 25/30 fps, or do they interpolate
and show 50/60 fps? Do fast moving videos - e.g. sport, look as
good on plasma as on CRT?

Matt Cook
13-11-2004, 11:03 PM
Steve Simpson wrote:

> I find it hard to believe that HDTV manufacturers would make their
> TVs only work with either 50 or 60Hz. Multi-standard PAL/NTSC TVs
> have been common for years now and I can't see why HDTV would be any
> different.

US gear tends to be much less multi-standard than that found elsewhere. But
I would be suprised if something so top-end was.

opac
18-11-2004, 11:03 AM
"HD screen from the states" not worth the effort. consider the exchange
rate, freight and duty. HD screen and HD set-top's are selling as cheap and
the warranty is here not in the states.

"Scott Harrison" <sg.harrison@gmail.com> wrote in message
news:8412024d.0411112020.336dd1cd@posting.google.c om...
> Does anyone know of a decoder available (STB or PC card) on the Aus
> market that can output a 1080i signal at 60hz rather than the standard
> aus 50hz ?
>
> Relative of mine is considering brining a HD screen from the states
> over here.
>
> Thanks.

opac
18-11-2004, 11:13 AM
One other issue is that HD screens sold in the states do not support 576i
and 576p needed for Ch7



"Scott Harrison" <sg.harrison@gmail.com> wrote in message
news:8412024d.0411112020.336dd1cd@posting.google.c om...
> Does anyone know of a decoder available (STB or PC card) on the Aus
> market that can output a 1080i signal at 60hz rather than the standard
> aus 50hz ?
>
> Relative of mine is considering brining a HD screen from the states
> over here.
>
> Thanks.

Mick
19-11-2004, 08:43 AM
I believe there is more to it than that. Their DTV standard is
completely different to ours, akin to buying a tv ther eand using it
here, it wont work because the tuner is NTSC etc.

opac wrote:
> One other issue is that HD screens sold in the states do not support 576i
> and 576p needed for Ch7
>
>
>
> "Scott Harrison" <sg.harrison@gmail.com> wrote in message
> news:8412024d.0411112020.336dd1cd@posting.google.c om...
>
>>Does anyone know of a decoder available (STB or PC card) on the Aus
>>market that can output a 1080i signal at 60hz rather than the standard
>>aus 50hz ?
>>
>>Relative of mine is considering brining a HD screen from the states
>>over here.
>>
>>Thanks.
>
>
>