10-03-2023, 08:42 PM
(This post was last modified: 10-03-2023, 08:44 PM by Mike Watterson.)
(09-03-2023, 02:52 PM)ppppenguin Wrote: Block diagram and schematics of an analogue PAL coder I designed for G2 Systems in 1986/7. My first proper project when I went freelance. Desinged to code the output of a BBC micro. It predates low cost video opamps. Easily modified for NTSC (I've done NTSC 525). I still have the handwired prototype and it still works. A production version is coding the RGB output of the COW rotating BBC globe at the Dulwich museum.Obviously RGB to B-Y, R-Y and Y using video opamps feeding 2 x SL612 is simpler. And the NTSC is simpler than PAL. I can't remember if the NTSC needs the color burst that PAL has for reference phase. You can actually buy RGB to component video adaptors cheaply now, but I've no idea if they care about frame & line spec.
I've two DVD players that do component, but I think both are progressive only.
