Appendix B: Understanding The Projector Adjustments - Christie Mirage User Manual

22 Using 3D in Mirage Christie Digital Systems Inc.
Appendix B: Understanding the
Projector Adjustments
NOTE: All projector menu adjustments are fully explained in the
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Roadster/Mirage S User's Manual shipped with the projector.
— Frame delay sets the target latency of video processing
FRAME DELAY
through the projector. It can be set from slightly more than 1 frame to slightly
more than 2 frames, with the minimum setting dependent on your source
format and whether or not you are also using ChristieTWIST image warping.
Use Frame Delay to synchronize video content between multiple display
devices—for example, allowing a frame delay of 2 enables the same glasses
to be used when you are displaying simultaneously from both a projector and
a CRT monitor (the monitor has no frame delay, so setting the Mirage frame
delay to 2 keeps the left and right data ordered properly on both displays). A
frame delay twice that of the incoming vertical resolution creates 2 frames of
delay. For example, if your source is 1400
x 1050 a frame delay of 2100 (1050 x 2)
will produce a 2-frame delay between
source input and display output (see right).
Alternatively, when using ChristieTWIST in multiple-projector displays
having different amounts of vertical scaling, you may have to increase frame
delay for some devices so that the video arrives at the same time on the
display.
FRAME DELAY TO MATCH CRT MONITOR
delay. The projector will need a frame delay of two to match with the
monitor (delay by an even number of frames), so that both display the left
eye info at the same time.
— Mirage has a minimum delay of one frame. Calculate
MINIMUM DELAY
the required frame delay for your application as follows.
Total Frame Delay = 1 (Light engine) + Twist Latency
Twist Latency 0 – 100.
•
0 = no frame delay
•
100 = 1 frame delay
•
Depends on the amount of vertical Twist, should be as low as
possible.
•
After completing Twist setup, Adjust Latency until you see no
vertical tearing.
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ChristieTWIST is an optional component for Mirage projectors. Use a value of "0" if your
projector does not include ChristieTWIST.
— A CRT monitor has no frame
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+ Frame Delay