P3D Re: Driving Multiple Pairs of LCS Goggles for 3-D Video byArthur Fischer

["Greg Wageman" <gjw@xxxxxxxxxx>]

>Does anyone know of an amplifier that could be placed on the OUTPUT
side of
>the driver box to allow me to use more pairs of goggles.

I'm not familiar with the Toshiba system; but LC shutters (like the Sega
glasses I have) typically require a low-voltage, medium-frequency A/C
drive signal.  As such, finding a suitable amplifier "off the shelf"
might be difficult.  (I'm talking about the wired glasses, not wireless
systems like Vrex's, which have the driver electronics built in to the
glasses themselves, and receive an infrared control signal.)

>Or, would a video
>amplifier placed on the INPUT side of the driver box work

That would most definitely NOT work.  The driver box is probably
detecting the vertical sync in the video signal, and switching the A/C
drive voltage on and off to the appropriate side of the glasses.
Boosting the input signal would have no effect on the output voltage,
which is generated internally to the driver box.

>A possible solution would be to get additional driver boxes and split
the
>VIDEO OUTPUT SIGNAL from the VCR and send the split signal to the INPUT
side
>of the driver boxes.  The question then remains: Will the strength of
the of
>the split signal be sufficient to drive multiple boxes.


This would work.  It is possible to purchase amplified splitters (as
opposed to passive ones each of which more than halves the signal
strength).  Be sure to mention that your application is "baseband
video", or you may end up with a cable antenna splitter instead.

     -Greg W. (gjw@xxxxxxxxxx)