Hans Verkuil wrote: >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). > > There is a reference at http://portal.etsi.org/radio/AnalogueTVBroadcasting/ATVB.asp if you search on GCR.
Don't know the details. I just have some customers with IVTV cards and really badly ghosted signals that i'm trying to help Steve _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
