Michael J. Mahon wrote:
Linards Ticmanis wrote:Michael J. Mahon wrote:Of course, an NTSC processor doesn't care about boundaries, only about streams of bits--which I why I proposed a shift register "window" that is more than 4-bits wide, like 8 or 12, even, for greater fidelity to analog color processing.Interesting approach. How would the forumlae for determining one output pixel's color work in this case? In principle, I mean.You would do it just as you have done in the past, but with a wider "window" and a lowpass filter applied to the chroma before demodulation. That "smears" the color out. Of course, the delay of the lowpass must be matched in the luminance channel to keep things in register.
I should have noted that for fidelity to a real composite display, the luminance info must also be low-passed, but to, say, 2.5MHz - 3MHz. -michael Parallel computing for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."