On Oct 5, 2012, at 4:45 PM, Zane H. Healy wrote:
At 4:38 PM -0400 10/5/12, David Riley wrote:
I can't speak to how well it works; I know
that various LCD TVs I've
used really don't like the composite signal coming from the Apple ][
or the NES; it's probably slightly off spec, and the sloppy, cheap
analog control loops in old tube TVs handled it fine, but the digital
sync detector barfs on it. That's my working theory, anyway.
Try running the signal through an old VCR, then to the converter, and
see what happens. That's what we have to do to get a Sega Genesis
working on our old Mitsubishi HDTV-ready TV (which really isn't
ready, the PS3 freaks it out).
While I'm sure that would work, my preferred solution is to run the
systems on an old tube TV, because the graphics were definitely
designed with the blurring effects of cheap CRTs in mind. :-) A lot
of games look really ugly when you can see every pixel, which is why
a lot of emulators spend more cycles on fancy blurring effects than
they do on the actual CPU and graphics emulation.
I do recall the VCR cleaning the signal up a lot vs. plugging right
into the TV back in the day, though. Something along the lines of
an AGC circuit in the path, which is what the Macrovision copy
protection technology freaks out to keep you from taping your DVDs.