Working With 3D; Requirements For 3D - Christie CP2000-M User Manual

Section 3: Operation
3.8

Working with 3D

A single projector can display 3D images, as described below. Such images require a 3D-capable source, as
well as additional hardware and cabling in order to be displayed and interpreted correctly in a typical stereo 3D
viewing environment. Images generated from a 3D-cinema source consist of a series of images (frames or
fields) that alternate quickly between two slightly different viewpoints corresponding to the physical separation
of our left and right eyes (called parallax). When these frames are displayed with enough speed and viewed
with special glasses synchronized with the left/right (L/R) frame sequencing, the resulting "single" perceived
image appears with much the same depth and perspective we sense in the real world. After connecting signals
to the projector, use the web user interface Channel: 3D Control menu (Figure 3-47) to define and control the
signal processing, synchronizing and output for devices used in the stereographic 3D display. These settings
ensure critical ordering and timing of the incoming left/right frames so they merge correctly into a convincing
artifact-free 3D display without cross-talk, ghosting or other artifacts.

3.8.1 Requirements for 3D

To display 3D the CP2000-M/MR requires a 3D capable SMPTE source and a few special hardware/software
setups, as described below:
 CP2000-M/MR projector (includes all standard 3D components).
 Two HD-SDI cinema signals (left and right) connected to the projector's SMPTE ports 292-A and
292-B. NOTE: Use of a single input consisting of both left and right data is not currently supported.
 Sync output device:
• IR emitter for controlling the L/R gating (switching) of active glasses.
OR:
• Pi-Cell polarizer for controlling a screen that has a silver polarization-preserving surface for use with
passive glasses.
 Custom 3D sync output cable (GPIO) - available from RealD:
• For routing the projector's output sync to your sync output device (connect from the projector's
GPIO to the emitter or polarizer). NOTE: The GPIO connector can be accessed from the right-side of
the projector. Refer to
 Power supply for your sync output device, typically wired with the custom GPIO cable.
3-60
Figure 3-47 Channel: 3D Control Menu
Appendix C: GPIO for GPIO pinout information.
CP2000-M/MR User Manual
020-100123-07 Rev. 1 (12-2009)