[mythtv-users] How I got great quality TV-out on my nVidia MX4000

[Cory Papenfuss]

> Could be but I like Corey's idea better.  The above is a scan converter.
> Corey does not convert the scan but has the computer produce the right
> timings for television.  His circuit just does "coordinate
> transformation RGB->YPbPr and NTSC composite modulation (colorburst,
> 3.58MHz crystal, etc)".
>
> This seems a better idea.  Process the signal as little as possible.
>
 	That's what I thought.  I'm happy with the results, but the 
annoyance of getting everything right is definately beyond the scope of 
what most people are willing to deal with.  It was also pointed out to me 
a few months ago that my circuit wasn't completely accurate.  I use a 
3.58Mhz crystal to generate the color subcarrier, but in reality it should 
be line-locked to the horizontal sweep frequency.  That's one of the 
modifications I'd like to do (with all my free time... hahaha!)

-Cory

*************************************************************************
* Cory Papenfuss                                                        *
* Electrical Engineering candidate Ph.D. graduate student               *
* Virginia Polytechnic Institute and State University                   *
*************************************************************************