piclist 2001\01\26\134059a >
Thread: Having trouble with LM1881 / NTSC sync separator
www.piclist.com/techref/displays.htm?key=ntsc
face picon face BY : Olin Lathrop email (remove spam text)



> The two monitors are not really separate. They are both in one pair of
> glasses, and have a common video input. There is a logic signal input to
the
> glasses that steers each frame to the correct eye.

Ah, so the problem is that the HMD is an integrated unit that only accepts
one video signal.  Somewhere inside it has two separate monitors, though.
Sounds like this is the wrong HMD for the available signal.  Why not get the
right one or perform a little surgury to remove the internal splitter?

The composite approach is reasonable for the single monitor case with
separate shutters for each eye.  In that case, though, the frame rate is
usually much higher than NTSC video, so you've got more room to play with.
Doing this with an HMD sounds like you are creating a headache generator.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@spam@spamembedinc.com, http://www.embedinc.com

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Subject (change) Having trouble with LM1881 / NTSC sync separator

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