On Monday 05 June 2006 13:29, Steven Ellis wrote:
> Hans Verkuil wrote:
> >On Monday 05 June 2006 03:40, Steven Ellis wrote:
> >>Is there any support for de-ghosting signals within the IVTV
> >> tuners? A number of the tv stations in NZ include the extra
> >> information to help de-ghost a signal which would improve
> >> reception on a couple of channels quite considerably.
> >
> >That's probably for widescreen transmissions I guess? Anyway, to my
> >knowledge there is no support for that. And I don't think it is
> >possible to add it. I don't believe either the saa7115 or the
> > cx2584x support something like that.
>
> Actually the carrier is part of some standard 4:3 PAL signals here in
> NZ. Due to geographic issues (NZ has an abundance of geography)
> severe ghosting is common. You can get units that will de-ghost a
> single channel, but then you need to feed the composite input into
> your MythTV box which is a pain. If the IVTV cards understood the
> signal they could handle it automatically. Didn't know if there were
> any undocumented additions to the denoise filters.
Do you have a pointer to some description of the signal? I only know
about the PALplus standard for widescreen transmissions where the black
bars above and below the picture contain extra information.
Could it be that it isn't extra information but special deghosting
hardware? I know that several Japanese MPEG cards have special chips
that do this (those are supported by ivtv).
Hans
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