Christie DS4K User Manual page 73

Figure 3.28. Typical 3D Configuration: Passive Glasses & 3D Stereo Sync Cable
•
APPROPRIATE 3D SOURCE
must be customized to precisely match the processing capabilities of the
projector. In addition, the source must provide a separate synchronization
signal that precisely controls when left/right fields are visible through the
viewer's glasses.
•
: Your 3D displays will usually require adjustment of frame delay,
INVERTER
which can be approximately 1-3 frames set in 1-line increments. If the delay is
1 frame or 3 frames it needs correction (i.e., reversal of frames), otherwise
image data intended for one eye would be delayed and seen by the other—
images would lose their 3D quality. If a 3D (stereographic) source cannot
invert the signal, thereby synchronizing the left/right shutters in your 3D
glasses with the corresponding images displayed by the projector, you can
invert via a left/right TTL inverter or by using the 3D Stereo Sync Cable and
the proper 3D Stereo Sync setting in the Advanced Image Settings menu. Either
configuration ensures that shutter changes in the glasses allow each eye to
receive the image data intended for it, regaining the 3D effect in the display. In
addition, you can lock the R/L signal to Mirage's output frame sync.
NOTE: Depending on your workstation, you may be able to reverse left/right
frames through software only, eliminating the need for separate inverter
hardware or the 3D Stereo Sync Cable.
•
: In response to an incoming sync signal, this small device emits
IR EMITTER
left/right IR signals to a receiver in active 3D glasses, causing their left/right
shutters to alternately open and close for active 3D (stereographic)
applications. Connecting one of the 3D Stereo Sync Cable outputs to an emitter
also enables you to switch back-and-forth between active and passive systems,
if desired.
•
: Active glasses differ in speed/performance—consult the documentation
GLASSES
for your glasses and keep their specifications in mind when reconfiguring your
source signal. The input signal must be optimized for the available shutter
speed in order to prevent obvious "ghosting" of image content (known as
: Signals from your 3D source (workstation or PC)
Section 3: Operation
User's Manual 3-51
.