Re: What causes Vertical Stripes in GS/OS 6.0.1 desktop?

[PZ <skierpaul@yahoo.com>]

Yes, in theory, but this isn't the result that Rob is getting with
this device and possibly their FAQ concurs.  Its possible that they're
cutting corners on the Component Output, or its possible that the
signal degredation of the S-Video is blurring the dithering
sufficiently to make the picture look better with the GS.

- Paul

On Aug 14, 3:07 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
> PZ wrote:
> > Its interesting that that the FAQ was highly encouraging the use of
> > the SVideo output for best results, however I don't know if the FAQ
> > was written for the earlier model that lacked the Component Outputs or
> > if these statements include the latest revision.
>
> In general, RGB and Component should be regarded as equivalent
> in bandwidth and color capability.  S-video is a distant second,
> and, of course, composite brings up the rear by a wide margin--
> unless, of course, the material you are displaying is natively
> composite.  ;-)
>
> To easily observe the chroma bandwidth limiting of S-video, just
> hook up a DVD player using S-video and view the beginning "scroll
> into infinity" titles of any Star Wars movie.  The text will be
> golden at the lower, and lower spatial frequency, "foreground"
> part of the screen, and it will fade to light gray as it scrolls
> into infinity, and ever narrower features.
>
>
>
> > On Aug 13, 11:52 am, "Michael J. Mahon" <mjma...@aol.com> wrote:
>
> >>Rob wrote:
>
> >>>I am using the RGB to Video, S-VIdeo & Component Video encoder
> >>>available here:
> >>>http://www.jrok.com/hardware/RGBv4/index.html
>
> >>>I wired a 15-Pin Sub-D port to the RGB input header so I can plug the
> >>>GS straight into it using an original monitor cable.
>
> >>>Incidently, I just tried the S-video output and it doesn't even
> >>>exhibit the dithering effect.
>
> >>That's probably because of bandwidth rolloff in the S-video signal
> >>processing.  16MHz is more than most S-video inputs will expect.
>
> >>Unfortunately, this may also compromise sharpness of small features,
> >>like text.  And small features with hue contrast but no luminance
> >>contrast will be nearly invisible, since S-video chroma information
> >>is band-limited to well under 3MHz.
>
> >>-michael
>
> >>NadaNet file server for Apple II computers!
> >>Home page:  http://members.aol.com/MJMahon/
>
> >>"The wastebasket is our most important design
> >>tool--and it's seriously underused."
>
> --
>
> -michael
>
> NadaNet file server for Apple II computers!
> Home page:  http://members.aol.com/MJMahon/
>
> "The wastebasket is our most important design
> tool--and it's seriously underused."