Converting component sync

Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

Doughboy

In message ,
Doughboy Proclaimed from the tallest tower:
Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

Doughboy

What about the number of lines...?

--
Regards,
Chris.
(Remove Elvis's shoes to email me)

Doughboy wrote:

Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

Stricly speaking, PAL and NTSC are methods of encoding colour onto a
*composite* signal, and do not apply to component signals.

However, as you probably know, PAL tends to be used in 50Hz 576-line TV
systems, and NTSC tends to be used in 60Hz 480-line TV systems, and if
you see DVDs marked with "PAL" or "NTSC", then that is what is meant.

What is the actual problem? Have you got a display that can't handle a
50Hz source? The difficulty is that dual-standard consumer equipment
tends to be sold in PAL areas rather than NTSC areas, so it's much
easier to go from NTSC to PAL than the reverse.

--
Dave Farrance

In article ,
Doughboy wrote:
Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

'Just the sync' covers a rather large amount.

By custom and practice, NTSC has come to mean a tv signal with 525 lines
per picture and 60 fields per second, while PAL means 625 lines per picture
and 50 fields per second.

To convert between one and the other you need a "standards converter" which
will change the field rate. These used to be rather large beasts, but are
a bit smaller nowadays.

Try googling for 'tv standards converter'.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11

On Fri, 15 Dec 2006 13:42:49 -0000, "ChrisM"
wrote:

In message ,
Doughboy Proclaimed from the tallest tower:
Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

Doughboy

What about the number of lines...?

I meant it's just the sync that needs to be changed to get a picture,
but it might well be that the number of lines has to be changed as
well.

Doughboy

On Fri, 15 Dec 2006 13:38:55 GMT, Doughboy wrote:

Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

PAL and NTSC refer to composite signals. It is meaningless to refer to
PAL or NTSC component.
What you probably mean is "convert 625/50 component to 525/60 component".

I think it's just the sync that's different but I could well be wrong.

You are very wrong. You need a standards converter.

On Fri, 15 Dec 2006 13:59:09 GMT, Dave Farrance
wrote:

Doughboy wrote:

Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

Stricly speaking, PAL and NTSC are methods of encoding colour onto a
*composite* signal, and do not apply to component signals.

However, as you probably know, PAL tends to be used in 50Hz 576-line TV
systems, and NTSC tends to be used in 60Hz 480-line TV systems, and if
you see DVDs marked with "PAL" or "NTSC", then that is what is meant.

What is the actual problem? Have you got a display that can't handle a
50Hz source? The difficulty is that dual-standard consumer equipment
tends to be sold in PAL areas rather than NTSC areas, so it's much
easier to go from NTSC to PAL than the reverse.

Yeah, I think I got the bit about PAL and NTSC not applying to
component signals but overlooked the sync/lines differences.

I've got a PAL Freeview box with component out and an NTSC TV that
doesn't handle 50hz as far as I know. I haven't had a chance to try it
yet as the "Vivanco SCART component lead" that I just had delivered
from Tesco's is nothing of the sort. It's a SCART to composite video
and stereo audio lead!

The Freeview box does composite out as well, but for some reason the
composite/s-video standards converter that I've got can't find a
signal in auto mode and doesn't work if I manually set it to PAL
input. The composite out is working fine into my old PAL TV with the
same SCART to composite lead and my VCR works fine with the same lead
with the standards converter.

For now, I've got the Freeview box going into my PC's graphics card
via composite and back out to the TV via DVI, which looks great but I
don't really want to have to leave the PC on just to watch TV. If I do
end up doing things this way, I'd probably be better off just getting
a Freeview card/adapter for the PC.

Doughboy

On Fri, 15 Dec 2006 14:00:14 +0000 (GMT), charles
wrote:

In article ,
Doughboy wrote:
Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

'Just the sync' covers a rather large amount.

By custom and practice, NTSC has come to mean a tv signal with 525 lines
per picture and 60 fields per second, while PAL means 625 lines per picture
and 50 fields per second.

To convert between one and the other you need a "standards converter" which
will change the field rate. These used to be rather large beasts, but are
a bit smaller nowadays.

Try googling for 'tv standards converter'.

I've got a composite/s-video standards converter but I was hoping to
use the component input on the TV and sell the converter. For some
reason, it doesn't work with the composite out of the Freeview box I'm
trying to use anyway, so I'll probably sell it anyway.

Doughboy

"Doughboy" wrote in message
...
On Fri, 15 Dec 2006 14:00:14 +0000 (GMT), charles
wrote:

In article ,
Doughboy wrote:
Can anyone tell me how easy/hard it is to convert a PAL component
signal to an NTSC component signal.

I think it's just the sync that's different but I could well be wrong.

'Just the sync' covers a rather large amount.

By custom and practice, NTSC has come to mean a tv signal with 525 lines
per picture and 60 fields per second, while PAL means 625 lines per
picture
and 50 fields per second.

To convert between one and the other you need a "standards converter"
which
will change the field rate. These used to be rather large beasts, but
are
a bit smaller nowadays.

Try googling for 'tv standards converter'.

I've got a composite/s-video standards converter but I was hoping to
use the component input on the TV and sell the converter. For some
reason, it doesn't work with the composite out of the Freeview box I'm
trying to use anyway, so I'll probably sell it anyway.

Doughboy

Some cheap "standards converters" don't change the number of lines or the
field rate. They are designed to re-encode the colour part of the composite
signal, from NTSC at 3.58 MHz to PAL at 4.43 MHz or possibly vice versa, to
make a composite input TV work on the wrong standard.

What exactly do you mean by a composite/s-video standards converter though?
Does is just convert composite to s-video? If so, that does practically
nothing to the signal anyway.

Are you sure that your TV won't work with 50 Hz video? Was it bought in the
USA?

In article ,
Stephen wrote:


Are you sure that your TV won't work with 50 Hz video? Was it bought in
the USA?

not unusual - 50Hz ones often can run at 60Hz, but rarely the other way
round.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11