17 May
2010
17 May
'10
8:29 p.m.
On Mon, May 17, 2010 at 23:13, Chuck Guzis <cclist at sydex.com> wrote:
On 17 May 2010 at 19:50, Mr Ian Primus wrote:
But given the nonlinearity would only affect the luminance component,
it might not be very noticeable. I would just try it. :-)
I have the need to optically isolate a composite
video signal to
compensate for the different ground reference between the devices.
Most garden-variety optos are hideously non-linear. I'm assuming that ADC->opto->DAC is out of
the question.
Regular optoisolators would probably not be fast enough, but a simple
one-bit sigma-delta A/D-D/A chain is not too hard to do...(at least in
theory)
Joe.
--
Joachim Thiemann :: http://www.tsp.ece.mcgill.ca/~jthiem